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© 2015 Fairchild Semiconductor Corporation FEBFL7921RMX_L65U100A • Rev. 1.0
User Guide for
FEBFL7921RMX_L65U100A
Evaluation Board
LED Driver for 100 W Smart Lamp with
High PF and Low THD
Featured Fairchild Product:
FL7921R
Direct questions or comments about this evaluation board to:
“Worldwide Direct Support”
Fairchild Semiconductor.com
© 2015 Fairchild Semiconductor Corporation 2 FEBFL7921RMX_L65U100A • Rev. 1.0
Table of Contents
1. Introduction ............................................................................................................................... 3
1.1. Description ....................................................................................................................... 3 1.2. Features ............................................................................................................................ 3 1.3. Block Diagram ................................................................................................................. 4
2. Evaluation Board Specifications ............................................................................................... 5
3. Photographs............................................................................................................................... 6
4. Printed Circuit Board ................................................................................................................ 7
5. Schematic .................................................................................................................................. 8
6. Bill of Materials ........................................................................................................................ 9
Bill of Materials (Continued) ...................................................................................................... 10
Bill of Materials (Continued) ...................................................................................................... 11
7. Transformer and Winding Specifications ............................................................................... 12
7.1. Flyback Transformer ...................................................................................................... 12 7.2. Boost Inductor ................................................................................................................ 13
8. Test Conditions & Test Equipment......................................................................................... 14
9. Performance of Evaluation Board ........................................................................................... 15
9.1. System Efficiency and No Load Power Consumption ................................................... 15 9.2. Power Factor [PF] and Total Harmonic Distortion [THD] ............................................ 17
9.3. Harmonics Performance Analysis .................................................................................. 18 9.4. Constant Current & Constant Voltage (CC / CV) .......................................................... 20 9.5. Analog Dimming ............................................................................................................ 22
9.6. Temperature Checking Results ...................................................................................... 24 9.7. Startup Behavior of PFC and PWM ............................................................................... 25
9.8. Operation Waveforms .................................................................................................... 28 9.9. Short-Circuit Protection ................................................................................................. 31 9.10. Over-Temperature Protection (External Detection) ................................................... 32 9.11. Voltage Stress of the MOSFET & Rectifier ............................................................... 33
9.12. EMI ............................................................................................................................. 35
10. Revision History ..................................................................................................................... 37
© 2015 Fairchild Semiconductor Corporation 3 FEBFL7921RMX_L65U100A • Rev. 1.0
This user guide supports the evaluation kit for the FL7921R. It should be used in
conjunction with the FL7921R datasheets and technical support team. Please visit
Fairchild’s website at www.fairchildsemi.com.
1. Introduction
This document describes the proposed solution for a universal LED driver using the
FL7921R CRM PFC and QR PWM controller. The wide input voltage range is 90 VRMS –
305 VRMS and output is constant voltage/current of 50 V / 2 A. This document contains
general description of FL7921R, the LED driver specification, schematic, a bill of
materials, and the typical operating characteristics.
1.1. Description
The highly integrated FL7921R combines a Power Factor Correction (PFC) controller
and a Quasi-Resonant PWM controller. For PFC, FL7921R uses a controlled on-time
technique to provide a regulated DC output voltage and to perform natural power factor
correction. An innovative THD optimizer reduces input current distortion at zero-
crossing duration to improve THD performance. The PFC function is always on
regardless of the PWM stage load condition to ensure that high PF can be achieved at
light load condition. For PWM, FL7921R provides several functions to enhance power
system performance: valley detection, green-mode operation, high / low line over-power
compensation. Protection functions include secondary-side open-loop and over-current
with auto-recovery protection, external recovery triggering, adjustable over-temperature
protection through the RT pin and external NTC resistor, internal over-temperature
shutdown, VDD pin OVP, DET pin over-voltage for output OVP, and brown-in / out for
AC input voltage UVP. All protections are auto recovery mode except PWM current
sense pin open protection.
1.2. Features
Integrated PFC and Flyback Controller
Critical-Mode PFC Controller
Zero-Current Detection for PFC Stage
Quasi-Resonant Operation for PWM Stage
Internal Minimum tOFF 8 µs for QR PWM Stage
Internal 10 ms Soft-Start for PWM
High / Low Line Over-Power Compensation
Auto Recovery Over-Current Protection
Auto Recovery Open-Loop Protection
Auto Recovery Over-Temperature Protection
Adjustable Over-Temperature with external NTC through the RT pin
Auto Recovery VDD Pin and Output Voltage OVP
© 2015 Fairchild Semiconductor Corporation 4 FEBFL7921RMX_L65U100A • Rev. 1.0
1.3. Block Diagram
CSPWM
2 16 7
3
4
11
5
10
9 12 13
1
8
6
14
2.5V
INV
2.35V
COMP
0.45V
CSPFCBlanking
Circuit
0.82V
Sawtooth
Generator
/tON-max
THD
Optimizer
Multi-Vector Amp.
ZCD
OPFC
DRV
DRV
GND
10V
2.1V/1.75VInhibit
Timer
PFC Zero Current
Detector
VDD
Two Steps
UVLO
18V/10V/7.5V
Internal
Bias
Recovery
OVP
UVP
Disable
Function
0.2V
Restarter
PFC
Current Limit
15.5VLatched or
Recovery
17.5V
OPWM
DET
FB
RT VIN
HV
RANGE
IHV
Debounce
100ms
2.1V/2.45V PFC RANGE Ccontrol
1V/1.3V
2.75V
2.65V
2.75V
RANGE
2.9V
RANGE
4.2V
2R
R
Debounce
Time
100µA
Soft-Start
10ms
PWM
Current Limit
Internal
OTPRecovery
110µs
10ms
0.8V
0.5V
IRT
Prog. OTP
/ Externally Triggering
Blanking
Circuit
Brownout
Q
QSET
CLR
S
R
Q
QSET
CLR
S
R
VB & clamp
Vcomp to
1.6V
FB OLPTimer
50msVB
Over0Power
Compensation
Starter
2.25ms
28µs
15 NC
24V
OVP
1.2V
VINV
Startup
S/H
tOFF-MIN
(8µs/37µs/2.25ms)
DET OVP
2.5V
tOFF
Blanking
(4µs)
VDET
Valley
Detector
IDET
1st
Valley
tOFF-MIN
+9µs
Debounce
100ms
Brownout
comparator
Recovery
Output Open-loop (FB pin)
Output Short Circuit (FB pin)
Debounce
70µs
DET pin OVP
VDD pin OVP
Output Over Power/ Overload (FB pin)
Recovery
Recovery
2.1V
IZCD
1V
Recovery
Latched or
Recovery
3V
Latched
CS OVP
RT Pin Prog OTP
RT Pin Externally Triggering
IDET
Figure 1. FL7921R Block Diagram
© 2015 Fairchild Semiconductor Corporation 5 FEBFL7921RMX_L65U100A • Rev. 1.0
2. Evaluation Board Specifications
All data for this table was measured at an ambient temperature of 25°C.
Table 1. Summary of Features and Performance
Description Symbol Value Comments
Input Voltage
VIN.MIN 90 VAC Minimum Input Voltage
VIN.MAX 305 VAC Maximum Input Voltage
Frequency fIN 60 Hz / 50 Hz Line Frequency
Output
Voltage VOUT-Max 50 V Maximum Output Voltage
VOUT_Min. 27 V Minimum Output Voltage
Current IOUT-Max 2.0 A Maximum Output Current
IOUT_Min. 0.0 A Minimum Output Current
Efficiency at VOUT= 47 V
(VOUT = 27 V)
Eff90VAC 89.41% (88.93%) Efficiency at 90 VAC Line Input Voltage
Eff115VAC 90.69% (89.61%) Efficiency at 115 VAC Line Input Voltage
Eff230VAC 91.56% (89.24%) Efficiency at 230 VAC Line Input Voltage
Eff264VAC 91.59% (89.12%) Efficiency at 264 VAC Line Input Voltage
Eff277VAC 91.62% (89.05%) Efficiency at 277 VAC Line Input Voltage
Eff300VAC 91.63% (89.18%) Efficiency at 300 VAC Line Input Voltage
Standby Power
Eff90VAC 0.320 W Standby Power at 90 VAC Line Input Voltage
Eff115VAC 0.292 W Standby Power at 115 VAC Line Input Voltage
Eff230VAC 0.322 W Standby Power at 230 VAC Line Input Voltage
Eff264VAC 0.322 W Standby Power at 264 VAC Line Input Voltage
Eff277VAC 0.322 W Standby Power at 277 VAC Line Input Voltage
Eff300VAC 0.325 W Standby Power at 300 VAC Line Input Voltage
PF / THD at VOUT = 47 V (VOUT = 27 V)
PF/THD 90VAC 0.999 / 3.63%
(0.998 / 5.01%) PF/THD at 90 VAC Line Input Voltage
PF/THD115VAC 0.998 / 4.15%
(0.996 / 5.60%) PF/THD at 115 VAC Line Input Voltage
PF/THD230VAC 0.988 / 6.19%
(0.970 / 10.41%) PF/THD at 230 VAC Line Input Voltage
PF/THD264VAC 0.980 / 7.26%
(0.952 / 13.26%) PF/THD at 264 VAC Line Input Voltage
PF/THD277VAC 0.977 / 7.74%
(0.944 / 14.42%) PF/THD at 277 VAC Line Input Voltage
PF/THD300VAC 0.965 / 12.68%
(0.919 / 23.44%) PF/THD at 300 VAC Line Input Voltage
Temperature at 90 VAC, (277 VAC)
Bridge Diode
TGBU4J 69.9°C (53.5°C) Bridge Diode Temperature at 25°C
MOSFET TFCPF190N60E 55.1ºC (53.3°C) PFC MOSFET Temperature at 25°C
TFCPF400N80Z 62.2°C (54.7°C) Flyback MOSFET Temperature at 25°C
Rectifier TRHRP860 60.0°C (56.1°C) PFC Rectifier Temperature at 25°C
TFFPF20UP30DNTU 69.3°C (70.6°C) Flyback Rectifier Temperature at 25°C
© 2015 Fairchild Semiconductor Corporation 6 FEBFL7921RMX_L65U100A • Rev. 1.0
3. Photographs
Figure 2. Photograph (168 x 35 mm
2) Top View
Figure 3. Photograph (168 x 35 mm
2) Bottom View
© 2015 Fairchild Semiconductor Corporation 7 FEBFL7921RMX_L65U100A • Rev. 1.0
4. Printed Circuit Board
Figure 4. Top Side
Figure 5. Bottom Side
© 2015 Fairchild Semiconductor Corporation 8 FEBFL7921RMX_L65U100A • Rev. 1.0
5. Schematic
Figure 6. Evaluation Board Schematic
12
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C_
VO
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1 2
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L/9
00
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N0
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R3
3
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4
R/1R/1206/1%
R45
R/1R6/1206/1%
R46
R/1R6/1206/1%
1
2 3
Q2
Q/F
CP
19
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60
E
21
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D/L
L4
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8
21
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HR
P8
60
21
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D/L
L4
14
8
R2
9
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/12
06
1
2 3
Q3
Q/F
CPF
40
0N
80
Z
R3
5
R/1
00K
/2WR
37
R/0R/1206
C18
C/2
22P
/1kV
2 1
D4
D/S
1J
+C
14
C/3
3u
F/5
0V
R28
R/0
R/1
206
21
D7
D/1
N49
35
C1
6
C/2
22P
/250
V/Y
C
+
C2
1
C/470u/63V
R4
7R
/NC
LE
D+
1 2
34
U3
U/F
OD
81
7A
R4
2R
/0R
/120
6
R4
3
R/1
k/0
805
/1%
AK
R
U4
U/K
A4
31
LZ
NL
C2
3C
/10
4P
/08
05
R2
1
R/1
00
R/1
20
6
C2
6
C/471P/0805
C2
5
C/N
C
F1
F/4
A/2
50
V
R5
5
R/1.5M/1206
R5
6
R/1.5M/1206
R5
9
R/4
70R
/120
6
C2
7
C/471P/0805
C2
9
C/222P/0805
FL
79
21
10
0W
(50
V/2
A)
R10
R/22K/0805/1%
R52
R/1
82K
/08
05
/1%
+C
22
C/470u/63V
IC_
VD
D
LE
D+
LE
D-
1
HS
1
HS
/2X
97
R9
R/6
8K
/12
06
R5
4R
/68
K/1
20
6
2 1
D1
0
D/L
L4
14
8
+
C3
0
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R58
R/0R/1206
IC_
VD
D1
1 2
C3
C/10P/0805
RA
NG
E1
CO
MP
2
INV
3
CS
PF
C4
CS
PW
M5
OP
FC
6
VD
D7
OP
WM
8
FB
11
RT
12
VIN
13
ZC
D1
4
N.C
.1
5
HV
16
GN
D9
DE
T1
0
U1
U/F
L7
92
1
R3
1
R/3
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/08
05
C6
C/1
02
P/0
80
5TR
2
NT
C/1
00K
R4
R/4
.7M
/12
06
R6
R/4
.7M
/12
06
R1
R/4
.7M
/12
06
R2
R/4
.7M
/12
06
R3
R/8
2K
/08
05
R7
R/1
60
K/0
80
5/1
%
R1
6
R/1
0R
/12
06
R18
R/0
R1
8/2
W
R1
5
R/4
0.2
K/1
20
6
N1
N2
N3
N4
N5
N1
2N
6N
7N
8
N9
N10
N1
1
N1
3N
14
N1
5
N1
6
N1
7
N1
8
N19
N2
2
N23
N24
N2
5
N2
6
N27
N2
8
RANGE
CO
MP
INV
CS
PF
C
CSPWM
OP
FC
OP
WM
DE
T
FB
RT
VIN
ZC
D
HV
N2
1
2 1
D8
D/S
1J
R8
R/0
R/1
20
6
R1
9
R/1
0K
/12
06
R20
R/10K/1206
Q4
Q/MMBT2907A
Q1
Q/M
MB
T2
90
7A
C15
C/104P/63V/1206
N3
9
N4
0
C13
C/104P/63V/1206
13
2
D1
D/F
FPF
20
UP3
0D
N
R38
R/3
30
R/1
206
/1%
R40
R/3
30
R/1
206
/1%
R41
R/3
30
R/1
206
/1%
C1
1
C/4
71P
/1K
V/1
20
6
+C
24 C/NC
L3
L/I
-127
R1
2
R/0
R1
R14
R/3
00k/1
206
R26
R/51K/0805
R1
7
R/1
0K
/080
5
R23
R/8
.2K
/080
5
2 1
D12
D/L
L4148
2
13
Q5
Q/M
MB
T222
2A
21
ZD
1
15V
OU
T1
1
IN1(-
)2
IN1(+
)3
GN
D4
IN2(+
)5
IN2(-
)6
OU
T2
7
VC
C8
U2
LM
290
4
21
D6
D/R
S1D
Nb
Nd
C2
8
C/104P/63V/1206
+C
34
C/22uF/50V
C31
C/104P/1206
C3
2
C/4
73
P/0
805
R2
4
R/1
0K
/08
05
C17
C/1
03
P/0
80
5
LE
D+ R3
0
R /160K /0805/1%
R39
R /7.68K /0805/1%
R27
R /10K /0805
C3
3
C/3
32P/0
80
5
R25
R/7
5K
/0805
2 1
D11
D/L
L4
148
21
D9
D/S
1M
C9
C/0.33u/450V
C7
C/NC
VD
D
Nc
Ne
Ng
Nh
Nk
IN l
No
Np
Nq
Nr
Nz
181
03 4
765
TX
1
TR
AN
S11
_1
1 2
HS
3
HS
/2X
97
1 2
HS
2
HS
/2X
72
12
3
R2
2
10
K
Fly
A-D
IM +
A-D
IM -
A-D
IM +
A-D
IM +
R36
R/1R/1206/1%
C20
C/N
C/0
80
5
R4
4
R/N
C/0
80
5
1
2
CN
3
1
2
CN
2 R32
R/2
4.9
K/0
805
Nj
R1
1 R/1
80K
/08
05
+C
19
C/4.7uF/50V
Vo
Vo
R4
8
R /787K /0805/1%
No
© 2015 Fairchild Semiconductor Corporation 9 FEBFL7921RMX_L65U100A • Rev. 1.0
6. Bill of Materials
Item No. Reference No. Part Number Qty. Description Manufacturer
1 R13 RP0805T 0000 1 0 Ω ±5%, 0805 SMD Resistor Taiwan Resistor
2 R39 RP0805T 7681 1 7.68 kΩ ±-1%, 0805 SMD
Resistor Taiwan Resistor
3 R31 RP0805T 3601 1 3.6 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
4 R43 RP0805T 1001 1 1 kΩ ±5%, 0805 SMD Resistor Taiwan Resistor
5 R23 RP0805T 8201 1 8.2 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
6 R17, R24, R27 RP0805T 1002 3 10 kΩ ±5%, 0805 SMD Resistor Taiwan Resistor
7 R10 RP0805T 2202 1 22 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
8 R32 RP0805T 2492 1 24.9 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
9 R26 RP0805T 5102 1 51 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
10 R25 RP0805T 7502 1 75 kΩ ±5%, 0805 SMD Resistor Taiwan Resistor
11 R3 RP0805T 8202 1 82 Ω ±1%, 0805 SMD Resistor Taiwan Resistor
12 R5 RP0805T 1503 1 150 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
13 R7, R30 RP0805T 1603 2 160 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
14 R11 RP0805T 1803 1 180 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
15 R48 RP0805T 7873 1 787 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
16 R52 RP0805T 1823 1 182 kΩ ±1%, 0805 SMD Resistor Taiwan Resistor
17 R8, R28, R37,
R42, R58 RP1206T 0000 5 0 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
18 R45, R46 RP1206T 1R6 2 1.6 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
19 R33, R34, R36 RP1206T 1R 3 1 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
20 R16, R29 RP1206T 10R 2 10 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
21 R38, R40, R41 RP1206T 3300 3 330 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
22 R21 RP1206T 1000 1 100 Ω ±5%, 1206 SMD Resistor Taiwan Resistor
23 R59 RP1206T 4700 1 470 Ω ±1%, 1206 SMD Resistor Taiwan Resistor
24 R19, R20 RP1206T 1002 2 10 kΩ ±5%, 1206 SMD Resistor Taiwan Resistor
25 R14 RP1206T 3003 1 300 kΩ ±5%, 1206 SMD Resistor Taiwan Resistor
26 R15 RP1206T 4022 1 40.2 kΩ ±5%, 1206 SMD Resistor Taiwan Resistor
27 R9, R54 RP1206T 6802 2 68 kΩ ±5%, 1206 SMD Resistor Taiwan Resistor
28 R55, R56 RP1206T 1504 2 1.5 MΩ ±1%, 1206 SMD Resistor Taiwan Resistor
29 R1, R2, R4, R6 RP1206T 4704 4 4.7 MΩ ±5%, 1206 SMD Resistor Taiwan Resistor
30 C3 MLCC100K050B 1 10 pF / 50 V ±10% X7R Taiwan Resistor
© 2015 Fairchild Semiconductor Corporation 10 FEBFL7921RMX_L65U100A • Rev. 1.0
Bill of Materials (Continued)
Item No. Reference No. Part Number Qty. Description Manufacturer
31 C6 MLCC102K050B 1 1 nF / 50 V ±10% X7R Taiwan Resistor
32 C17 MLCC103K050B 1 10 nF / 50 V ±10% X7R Taiwan Resistor
33 C23 MLCC104K050B 1 100 nF / 50 V ±10% X7R Taiwan Resistor
34 C29 MLCC222K050B 1 2.2 nF / 50 V ±10% X7R Taiwan Resistor
35 C1 MLCC224K050B 1 220 nF / 50 V ±10% X7R Taiwan Resistor
36 C33 MLCC332K050B 1 3.3 nF / 50 V ±10% X7R Taiwan Resistor
37 C4 MLCC334K050B 1 330 nF / 50 V ±10% X7R Taiwan Resistor
38 C26, C27 MLCC471K050B 2 470 pF / 50 V ±10% X7R Taiwan Resistor
39 C32 MLCC473K050B 1 47 nF / 50 V ±10% X7R Taiwan Resistor
40 C5 MLCC474K050B 1 470 nF / 50 V ±10% X7R Taiwan Resistor
41 C15, C28, C13 MLCC104K100B 3 100 nF / 100 V ±10% X7R Taiwan Resistor
42 C31 MLCC104K050B 1 100 nF / 50 V ±10% X7R Taiwan Resistor
43 C11 MLCC471K102B 1 470 pF / 1 kV ±10% X7R Taiwan Resistor
44 C18 MLCC222K102B 1 2.2 nF /1 kV ±10% X7R Taiwan Resistor
45 R22 1 1/4”TOP 10 kΩ, Variable Resistor Taiwan Resistor
46 R12 MPR 5W 01J 1 0Ω1 5 W Tzai Yuan
47 R18 CR-200 018J 1 2 W, 0.18 Ω ±5%, DIP Resistor Taiwan Resistor
48 R35 CR-200 R1003 1 2 W, 100 kΩ ±5%, DIP Resistor Taiwan Resistor
49 MOV1 MOV471KD10SBNL 1 10 ψ 470 V UNIT-TEEK
50 TR2 TTC105104KSY 1 5 ψ 100 kΩ Thinking
51 C2 PX334K2WD32 1 330 nF / 310 V, X2 Capacitor Kenjet
52 C9, C10 MTF334 2 0.33 µF / 450 V ±10%, MTF
Capacitor Kenjet
53 C16 E2GA222MYASA 1 2.2 nF / 250 V ±20%, Y1
Capacitor WYX
54 C19 LHK 4.7 µF/ 50 V 1 4.7 µF / 50 V 105C 5*11 mm,
Electrolytic Capacitor JACKCON
55 C22, C21 L-ESR 470 µF/ 63 V 2 470 µF / 63 V 105C 13*21 mm L-
, Electrolytic Capacitor JACKCON
56 C30, C34 LHK 22 µF/ 50 V 2 22 µF / 50 V 105C 5*11 mm,
Electrolytic Capacitor JACKCON
57 C12 RD 82 µF/ 500 V 1 82 µF / 500 V 105C 18*45 mm
RD, Electrolytic Capacitor SAMXON
58 C14 LHK 33 µF/ 50 V 1 33 µF / 50 V 105C 5*11 mm
LHK, Electrolytic Capacitor JACKCON
59 TX1 I-129 1 POT33 887 µH SUMIDA PS13-
150, Transformer SUMIDA
60 L4 I-130 1 RM-10, 434 µH PS15-146,
Inductor 勝輝
61 L2 TRN0183 1 T18X10X10 L=30 mH 勝輝
© 2015 Fairchild Semiconductor Corporation 11 FEBFL7921RMX_L65U100A • Rev. 1.0
Bill of Materials (Continued)
Item No. Reference No. Part Number Qty. Description Manufacturer
62 L5 TRN0184 1 T6026 L=400 µH 勝輝
63 L1 TRN0003 1 L1=L2=900 µH 勝輝
64 L3 WURTH
7447452100 1 WURTH 7447452100 10 µH WURTH
65 ZD1 MMSZ5245B 1 15 V,0.5 W SOD-123, Zener Fairchild
66 BD1 GBU4J 1 VRRM=600 V; IF @100C=4 A,
Bridge Rectifier Fairchild
67 D7 1N4935 1 1 A / 200 V Fairchild
68 D1 FFPF20UP30DNTU 1 20 A, 300 V Fairchild
69 D3, D5, D10, D11,
D12 LL4148 5 200 mA / 100 V Fairchild
70 D2 RHRP860 1 8 A / 400 V Fairchild
71 D6 RS1D (代FR103) 1 1 A / 200 V Fairchild
72 D4, D8 S1J 2 1 A / 600 V Fairchild
73 D9 S1M 1 1 A / 1000 V Fairchild
74 Q2 FCP190N60E 1 600 V, 20.6 A, 190 mΩ Fairchild
75 Q3 FCPF400N80Z 1 800 V, 11 A, 400 mΩ Fairchild
76 Q5 MMBT2222A 1 NPN General Purpose Amplifier Fairchild
77 Q1, Q4 MMBT2907A 2 PNP General Purpose Amplifier Fairchild
78 U2 LM2904MX 1 SOP-8 Fairchild
79 U1 IC Controller FL7921RMX
1 SOP-16 IC Fairchild
80 U3 FOD817A 1 Current Transfer Ratio :80–160% Fairchild
81 U4 KA431LZTA 1 Adjustable/2.5 V, 0.5% Fairchild
82 CN1 INLET 2P 90° 1 R-201SN90(B06) RICH BAY
83 CN2,CN3 PIN HDR 2*2P 2.54 mm 180°
1 2.54 mm 180° MOST WELL
84 CN2 JUMPER 1 6 mm CLOSE T&A
85 F1 FUSE GLASS
250V4A SLOWELY 1 3.6*10 36ES SLEEK
86 HS1 HEAT SINK MCH0090
1 61-10176-1Z HTC
87 HS2 HEAT SINK MCH0666
1 47.5 x 20 x 3 mm LONG TENG
FENG
88 HS3 HEAT SINK MCH0667
1 70 x 20 x 3 mm LONG TENG
FENG
89 LED+, LED- SG004-05 Pin
ψ2.2*18.2 mm OEM-10
2 KANG YANG
90 A-DIM+, A-DIM- TEST PIN 2 KANG YANG
91 PCB PCB PLM0338V2 1 SK
© 2015 Fairchild Semiconductor Corporation 12 FEBFL7921RMX_L65U100A • Rev. 1.0
7. Transformer and Winding Specifications
7.1. Flyback Transformer
Core: POT3319
Bobbin: POT3319 (10 Pins)
(Flying wire needs to have
3cm to connect PCB.)
Figure 7. Transformer Specifications & Construction
Table 2. Winding Specifications
Pin (S → F) Wire Turns Winding Method
N1 1 → 2 0.32 φ×1 24 Solenoid Winding
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
E1 Shield: 0.025 mm × 7 mm, 0.9 turns, one end should be connected to pin 4
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
N2 10 → Flying 0.4 φ×1
(Triple insulation wire) 16 Solenoid Winding
Insulation: Polyester Tape t = 0.025 mm, 1-Layer
N2 10 → Flying 0.4 φ×1
(Triple insulation wire) 16 Solenoid Winding
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
E1 Shield: 0.025 mm × 7 mm, 0.9 turns, one end should be connected to pin 4
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
N4 2 → 3 0.32 φ×1 24 Solenoid Winding
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
N3 5 → 4 0.3 φ×1 6 Solenoid Winding(To wind distribution evenly across the full winding width.)
Insulation: Polyester Tape t = 0.025 mm, 2-Layer
N5 6 → 7 0.3 φ×1
(Triple insulation wire) 8
Solenoid Winding(To wind distribution evenly across the full winding width.)
Insulation: Polyester Tape t = 0.025 mm, 3-Layer
Table 3. Electrical Characteristics
Pin Specification Remark
Primary-Side Inductance 1-3 887 µH ± 5% 100 kHz, 1 V
Primary-Side leakage Inductance 1-3 8 µH ± 5% Short One of the Secondary Windings
© 2015 Fairchild Semiconductor Corporation 13 FEBFL7921RMX_L65U100A • Rev. 1.0
7.2. Boost Inductor
Core: RM10
Bobbin: RM10 (12 Pins, only keep useful 4 pins)
Figure 8. Transformer Specifications & Construction
Table 4. Winding Specifications
No Pin (S - F) Wire Turns Winding Method
N1 112 0.1 Ф ×35 45 Ts Solenoid Winding
Insulation: Mylar® Tape t = 0.03 mm, 2-Layer
N2 58 0.35 Ф×1 6 Ts Solenoid Winding(To wind distribution evenly across the full winding width.)
Insulation: Mylar® Tape t = 0.03 mm, 2-Layer
Core RM-10
1.2T Closed loop shielding to PIN8
Insulation: Mylar® Tape t = 0.03 mm, 2-Layer
Table 5. Electrical Characteristics
Pin Specification Remark
Primary-Side Inductance 2-11 434 µH ± 5% 100 kHz, 1 V
© 2015 Fairchild Semiconductor Corporation 14 FEBFL7921RMX_L65U100A • Rev. 1.0
8. Test Conditions & Test Equipment
Table 6. Test Conditions & Test Equipment
Evaluation Board # FEBFL7921RMX_L65U100A
Test Temperature TA = 25°C
Test Equipments
AC Power Source: 6800 by EXTECH
DC Power Source: E3631A by Agilent
Power Analyzer: 6630 by Chroma
Electronic Load: 63030 by Chroma
Programmable Electronic Load: 63103A by Chroma
Power Meter: WT210 by YOKOGAWA
Oscilloscope: 24MXs-B by LeCroy
EMI Test Receiver: ESPI by ROHDE & SCHWARZ
Two-Line V-Network: ESH3-Z5 by ROHDE & SCHWARZ
Thermometer: Ti110 by FLUKE
© 2015 Fairchild Semiconductor Corporation 15 FEBFL7921RMX_L65U100A • Rev. 1.0
9. Performance of Evaluation Board
9.1. System Efficiency and No Load Power Consumption
System Efficiency
Figure 9 and Table 7 are the system efficiency curve and the data measured over whole
line voltages at two output voltage conditions [47 V / 27 V] that LEDs can be connected
with the maximum and minimum numbers.
Figure 9. System Efficiency
Table 7. Test Results
Output Voltage
Input Voltage
90 VAC 60 Hz
115 VAC 60 Hz
230 VAC 50 Hz
264 VAC 50 Hz
277 VAC 50 Hz
300 VAC 50 Hz
47 V 89.41% 90.69% 91.56% 91.59% 91.62% 91.63%
27 V 88.93% 89.61% 89.24% 89.12% 89.05% 89.18%
80%
82%
84%
86%
88%
90%
92%
90 120 150 180 210 240 270 300
Vo=47V
Vo=27V
Input Voltage(V)
Eff
icie
ncy
© 2015 Fairchild Semiconductor Corporation 16 FEBFL7921RMX_L65U100A • Rev. 1.0
No Load Power Consumption
Table 8 shows the results of the system power consumptions measured over whole line
inputs at no load condition. The power loss shows less than 0.5 W whole line inputs.
Table 8. Test Result
Input Voltage Input Power (mW) Output Voltage (V)
90 VAC / 60 Hz 320 50.28
115 VAC / 60 Hz 292 50.28
230 VAC / 50 Hz 322 50.33
264 VAC / 50 Hz 322 50.33
277 VAC / 50 Hz 322 50.33
300 VAC / 50 Hz 325 50.33
© 2015 Fairchild Semiconductor Corporation 17 FEBFL7921RMX_L65U100A • Rev. 1.0
9.2. Power Factor [PF] and Total Harmonic Distortion [THD]
Figure 10 and Table 9 show PF and THD performance measured over whole line voltages
at two output voltage conditions [47 V / 27 V] that LEDs can be connected with the
maximum and minimum numbers. PF can beyond 0.9 and THD can be less than 30% in
whole input lines although min LED numbers are connected.
Figure 10. PF and THD
Table 9. Test Results
Input Voltage Output Voltage
VO=47 V VO=27 V
90 VAC / 60 Hz PF 0.999 0.998
THD (%) 3.63 5.01
115 VAC / 60 Hz PF 0.998 0.996
THD (%) 4.15 5.60
230 VAC / 50 Hz PF 0.988 0.970
THD (%) 6.19 10.41
264 VAC / 50 Hz PF 0.980 0.952
THD (%) 7.26 13.26
277 VAC / 50 Hz PF 0.977 0.944
THD (%) 7.74 14.42
300 VAC / 50 Hz PF 0.965 0.919
THD (%) 12.68 23.44
0.00
5.00
10.00
15.00
20.00
25.00
30.00
35.00
40.00
0.500
0.550
0.600
0.650
0.700
0.750
0.800
0.850
0.900
0.950
1.000
90 120 150 180 210 240 270 300
Input Voltage(V)
PF@Vo=47V
PF@Vo=27V
THD@Vo=47V
THD@Vo=27VPF
TH
D(%
)
© 2015 Fairchild Semiconductor Corporation 18 FEBFL7921RMX_L65U100A • Rev. 1.0
9.3. Harmonics Performance Analysis
Figure 11 through Figure 14 show results measured per current harmonic order in each
line voltage [90 VAC and 277 VAC] and two output voltage conditions [47 V / 27 V] that
LEDs can be connected with the maximum and minimum numbers.
Figure 11. Harmonic Performance Results at 90 VAC and VO=47 V
Figure 12. Harmonic Performance Results at 277 VAC and VO=47 V
© 2015 Fairchild Semiconductor Corporation 19 FEBFL7921RMX_L65U100A • Rev. 1.0
Figure 13. Harmonic Performance Results at 90 VAC and VO=27 V
Figure 14. Harmonic Performance Results at 277 VAC and VO=27 V
© 2015 Fairchild Semiconductor Corporation 20 FEBFL7921RMX_L65U100A • Rev. 1.0
9.4. Constant Current & Constant Voltage (CC / CV)
CC and CV tolerance over whole input line voltages and wide output voltage ranges are
less ±1% and ±3% as shown respectively in Table 10 and Table 11. Figure 15 shows the
typical CC / CV graph with very stable performance and it was measured using electronic
load with CR mode at each line voltage from 90 VAC to 300 VAC.
Table 10. CC Test Results
Input Voltage Min. Current
(mA) Max. Current
(mA) Tolerance Remark
90 VAC / 60 Hz 2003.44 2008.13 ±0.12%
< ±1%
115 VAC / 60 Hz 2004.38 2007.19 ±0.07%
230 VAC / 50 Hz 2003.44 2007.19 ±0.09%
277 VAC / 50 Hz 2003.44 2007.19 ±0.09%
300 VAC / 50 Hz 2003.44 2007.19 ±0.09%
Total 2003.44 2008.13 ±0.12%
Table 11. CV Test Results
Input Voltage Min. Voltage
(V) Max. Voltage
(V) Tolerance Remark
90 VAC / 60 Hz 48.27 50.12 ±1.88%
< ±3%
115 VAC / 60 Hz 48.27 50.35 ±2.11%
230 VAC / 50 Hz 47.86 50.39 ±2.58%
277 VAC / 50 Hz 48.49 50.36 ±1.89%
300 VAC / 50 Hz 48.50 50.40 ±1.92%
Total 47.86 50.40 ±2.58%
© 2015 Fairchild Semiconductor Corporation 21 FEBFL7921RMX_L65U100A • Rev. 1.0
Figure 15. CC / CV Performance
0
10
20
30
40
50
60
0 500 1000 1500 2000
90Vac
115Vac
230Vac
277Vac
300Vac
Output Current (mA)
Ou
tpu
t V
olt
ag
e (
V)
© 2015 Fairchild Semiconductor Corporation 22 FEBFL7921RMX_L65U100A • Rev. 1.0
9.5. Analog Dimming
Figure 16 and Table 12 show dimming curve and output current measured according to 0
to 10 V applied. In demo board, analog dimming function can be implemented simply by
adjusting reference voltage in current regulation feedback circuits so that analog dimming
signal coming from 0 to 10 V dimmer can be connected directly in secondary side as
shown in Figure 17. The output current can be adjusted within the range of 0%~100% at
rated input line voltage and output voltage.
Figure 16. Analog Dimming Curve
Table 12. Output Current according to A-DIM
VIN (VAC)
VOUT (V)
A-DIM (V)
0 1 2 3 4 5 6 7 8 9 10
Output Current
(A)
90 47 0.000 0.195 0.393 0.592 0.791 0.990 1.188 1.387 1.586 1.785 1.981
30 0.000 0.196 0.395 0.594 0.793 0.991 1.190 1.389 1.588 1.785 1.983
277 47 0.000 0.195 0.393 0.592 0.791 0.990 1.188 1.387 1.586 1.785 1.981
30 0.000 0.196 0.395 0.594 0.795 0.991 1.192 1.391 1.590 1.786 1.985
0
0.5
1
1.5
2
2.5
0 1 2 3 4 5 6 7 8 9 10
90Vac@Vo=47V
90Vac@Vo=30V
277Vac@Vo=47V
277Vac@Vo=30V
A-DIM(V)
I o(A
)
© 2015 Fairchild Semiconductor Corporation 23 FEBFL7921RMX_L65U100A • Rev. 1.0
External Circuit for Analog Dimming
Output current can be changed by adjusting the reference voltage level of op-amp. On
demo board, jumper should be moved from CN2 to CN3 and 0 to 10 V signal should be
connected to A-DIM+. The output current formula show as below:
sencccc
DIMcco
RR
VRI
.1
2
(1)
Rcc.sen
Rcc1
Rcc2
Figure 17. Analog Dimming Circuit
© 2015 Fairchild Semiconductor Corporation 24 FEBFL7921RMX_L65U100A • Rev. 1.0
9.6. Temperature Checking Results
Figure 18 and Figure 19 show the temperature of active components measured at 90 VAC
line voltage and full load condition. Figure 20 and Figure 21 are results for 277 VAC input
voltage and full load condition. The results were measured after 60 minutes since startup.
Table 13. Test Results
Components 90 VAC / 60 Hz 277 VAC / 50 Hz Remark
Bridge Diode 69.9°C 53.5°C Top-Side
FET (PFC) 55.1°C 53.3°C Top-Side
FET (QR PWM) 62.2°C 54.7°C Top-Side
Rectifier (PFC) 60.0°C 56.1°C Top-Side
Rectifier (QR PWM) 69.3°C 70.6°C Top-Side
Figure 18. 90 VAC / 60 Hz; Top Side Figure 19. 90 VAC / 60 Hz; Bottom Side
Figure 20. 277 VAC / 50 Hz; Top Side Figure 21. 277 VAC / 50 Hz; Bottom Side
© 2015 Fairchild Semiconductor Corporation 25 FEBFL7921RMX_L65U100A • Rev. 1.0
9.7. Startup Behavior of PFC and PWM
Startup Time
Figure 22 and Figure 23 show the overall startup performance at full load condition. The
output load current starts flowing after about 883 ms at 90 VAC input and 322 ms at
277 VAC input when the AC input power switch turns on.
Table 14. Test Results
Input Voltage Turn On Time Remark
90 VAC / 60 Hz 0.883 s < 1 s
277 VAC / 50 Hz 0.322 s
Waveforms: CH1: VIN(200 V / div), CH2: V
DD(5 V / div),
CH3: V
O(PWM)
(10 V / div), CH4: IO(500 mA / div), Time Scale: (500 ms / div)
Figure 22. 90 VAC / 60 Hz Figure 23. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 26 FEBFL7921RMX_L65U100A • Rev. 1.0
PFC Behavior
Figure 24 to Figure 27 show startup performance of boost converter [PFC] on the board.
Output voltage can be changed as two levels depending on input lines. In this board,
output voltage is set as 290 V at 90 VAC and 445 V at 277 VAC respectively.
Waveforms: CH1: VDD
(5 V / div), CH2: VCOMP
(1 V / div),
CH3: VGS(PFC)
(10 V / div), CH4: VO-PFC
(100 V / div), Time Scale: (500 ms / div)
Figure 24. 90 VAC / 60 Hz Figure 25. 277 VAC / 50 Hz
Waveforms: CH1: VO(PWM)
(10 V / div), CH2: VGS(PWM)
(10 V / div), CH3: V
GS(PFC)
(10 V / div), CH4: VO(PFC)
(100 V / div) Time Scale: (500 ms / div)
Figure 26. 90 VAC / 60 Hz Figure 27. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 27 FEBFL7921RMX_L65U100A • Rev. 1.0
PWM Behavior
Figure 28 through Figure 31 show startup performance of the flyback converter [QR
PWM] on the board.
Waveforms: CH1: VDD
(5 V / div), CH2: VFB
(1 V / div),
CH3: VGS(PWM)
(10 V / div), CH4: IO-PWM
(500 mA / div), Time Scale: (500 ms / div)
Figure 28. 90 VAC / 60 Hz Figure 29. 277 VAC / 50 Hz
Waveforms: CH1: VO(PFC)
(100 V / div), CH2: VFB
(1 V / div), CH3: V
GS(PWM)
(10 V / div), CH4: IO-PWM
(500 mA / div) Time Scale: (500 ms / div)
Figure 30. 90 VAC / 60 Hz Figure 31. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 28 FEBFL7921RMX_L65U100A • Rev. 1.0
9.8. Operation Waveforms
Normal Operation
Figure 32 through Figure 35 shows the AC input voltage and current waveforms
respectively for each input line [90 VAC ~ 277 VAC] at rated output load condition.
Waveforms: CH1: VIN
(200 V / div), CH4: IIN
(1 A / div), Time Scale:
(10 ms / div)
Figure 32. 90 VAC / 60 Hz Figure 33. 115 VAC / 60 Hz
Figure 34. 230 VAC / 50 Hz Figure 35. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 29 FEBFL7921RMX_L65U100A • Rev. 1.0
Normal Operation of MOSFET (PFC)
Figure 36 through Figure 39 shows key waveforms of the PFC stage operated normally at
rated output load condition.
Waveforms: CH1: VCS-PFC
(200 mV / div), CH2: VCOMP
(1 V / div), CH3: V
DS-PFC
(200 V / div), CH4: VO-PFC
(100 V / div), Time Scale: (5 ms / div)
Figure 36. 90 VAC / 60 Hz Figure 37. 115 VAC / 60 Hz
Figure 38. 230 VAC / 50 Hz Figure 39. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 30 FEBFL7921RMX_L65U100A • Rev. 1.0
Normal Operation of MOSFET and Rectifier (QR PWM)
Figure 40 through Figure 43 shows key waveforms of the Flyback stage operated
normally at rated output load condition.
Waveforms: CH1: VCS-PWM
(200 mV / div), CH2: VFB
(1 V / div), CH3: V
DS-PWM
(200 V / div), CH4: IO-PWM
(500 mA / div), Time Scale: (10 µs / div)
Figure 40. 90 VAC / 60 Hz Figure 41. 277 VAC / 50 Hz
Waveforms: CH1: VAK-PWM
(50 V / div), CH2: VFB
(1 V / div), CH3: V
DS-PWM
(200 V / div), CH4: IO-PWM
(500 mA / div), Time Scale: (10 µs / div)
Figure 42. 90 VAC / 60 Hz Figure 43. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 31 FEBFL7921RMX_L65U100A • Rev. 1.0
9.9. Short-Circuit Protection
Output-Short Protection
Figure 44 and Figure 45 show waveforms related when LED is shorted.
Waveforms: CH1: VDD
(5 V / div), CH2: VFB
(1 V / div),
CH3: VDS-PWM
(200 V / div), CH4: IO-PWM
(500 mA / div), Time Scale: (1 s / div)
Figure 44. 90 VAC / 60 Hz Figure 45. 277 VAC / 50 Hz
Auto-Recovery Protection
Figure 46 and Figure 47 show waveforms related when LED is recovered from short
condition. IC operates in hiccup mode during output short then system can be recovered
normally once the output short is removed.
Waveforms: CH1: VDD
(5 V / div), CH2: VFB
(1 V / div),
CH3: VDS-PWM
(200 V / div), CH4: IO-PWM
(500 mA / div), Time Scale: (1 s / div)
Figure 46. 90 VAC / 60 Hz Figure 47. 277 VAC / 50 Hz
LED Short
© 2015 Fairchild Semiconductor Corporation 32 FEBFL7921RMX_L65U100A • Rev. 1.0
9.10. Over-Temperature Protection (External Detection)
RT<0.8 V
Figure 48 and Figure 49 show waveforms that over-temperature protection is triggered
when RT voltage is less than 0.8 V.
Waveforms: CH1: VGS-PFC
(10 V / div), CH2: VRT
(500 mV / div), CH3: V
DD
(5 V / div), CH4: VGS-PWM
(10 V / div), Time Scale: (500 ms / div)
Figure 48. 90 VAC / 60 Hz Figure 49. 277 VAC / 50 Hz
RT<0.5 V
The IC operates at hiccup mode during system happens over-temperature phenomenon.
Figure 50 and Figure 51 show related waveforms when system recovers from over-
temperature protection. IC operate hiccup mode during OTP and system can restart once
system is recovered to normal conditions.
Waveforms: CH1: VGS-PFC
(10 V / div), CH2: VRT
(500 mV / div), CH3: V
DD
(5 V / div), CH4: VGS-PWM
(10 V / div), Time Scale: (500 ms / div)
Figure 50. 90 VAC / 60 Hz Figure 51. 277 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 33 FEBFL7921RMX_L65U100A • Rev. 1.0
9.11. Voltage Stress of the MOSFET & Rectifier
Table 15 shows the maximum voltage across by MOSFET and Rectifier at steady state
and startup procedures. All components designed have margins more than 10% of their
rating voltage.
Table 15. Test Results
Components
90 VAC / 60 Hz 300 VAC / 50 Hz
Remark Steady State
Power On
Steady State
Power On
PFC MOSFET (VDS-PFC) 359 V 359 V 509 V 509 V 600 V
QR PWM MOSFET (VDS-PWM) 574 V 574 V 724 V 724 V 800 V
PFC Rectifier (VAK-PFC) 320 V 334 V 513 V 513 V 600 V
QR PWM Rectifier (VAK-PFC) 157 V 161 V 224 V 250 V 300 V
Steady State
Figure 52 and Figure 53 show voltage waveforms of MOSFETs and rectifiers used in
boost and flyback converters at steady state.
Waveform: CH1: VDS-PFC
(500 V / div), CH2: VAK-PFC
(200 V / div), CH3: V
DS-PWM
(500 V / div), CH4: VAK-PWM
(100 V / div), Time Scale: (5 ms / div)
Figure 52. 90 VAC / 60 Hz Figure 53. 300 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 34 FEBFL7921RMX_L65U100A • Rev. 1.0
Power On
Figure 54 and Figure 55 show voltage waveforms of MOSFETs and rectifiers used in
boost and flyback converters at startup.
Waveform: CH1: VDS-PFC
(500 V / div), CH2: VAK-PFC
(200 V / div), CH3: V
DS-PWM
(500 V / div), CH4: VAK-PWM
(100 V / div), Time Scale: (500 ms / div)
Figure 54. 90 VAC / 60 Hz Figure 55. 300 VAC / 50 Hz
© 2015 Fairchild Semiconductor Corporation 35 FEBFL7921RMX_L65U100A • Rev. 1.0
9.12. EMI
Test Conditions
Frequency Subrange: 150 kHz – 30 MHz, Probe: 2-Line-LISN ESH3-Z5
Signal Path: Receiver-2-Line-LISN ESH3-Z5, Detectors: Peak; Average
Load is Resistance(24 )
Test Results:
Figure 56. 115 VAC / 60 Hz, L Figure 57. 115 VAC / 60 Hz, N
Figure 58. 230 VAC / 50 Hz, L Figure 59. 230 VAC / 50 Hz, N
150 kHz 30 MHz
2 AV
CLRWRTDF
dBµV
dBµV
CLRWR
6DB
MT 10 ms
RBW 9 kHz
PREAMP OFFAtt 10 dB
1 PK
PRN
1 MHz 10 MHz
0
10
20
30
40
50
60
70
80
90
100
EN55022A
EN55022Q
Date: 26.AUG.2015 15:24:31
150 kHz 30 MHz
2 AV
CLRWRTDF
dBµV
dBµV
CLRWR
6DB
MT 10 ms
RBW 9 kHz
PREAMP OFFAtt 10 dB
1 PK
PRN
1 MHz 10 MHz
0
10
20
30
40
50
60
70
80
90
100
EN55022A
EN55022Q
Date: 26.AUG.2015 15:22:27
150 kHz 30 MHz
2 AV
CLRWRTDF
dBµV
dBµV
CLRWR
6DB
1 PK
MT 10 ms
RBW 9 kHz
PREAMP OFFAtt 10 dB
PRN
1 MHz 10 MHz
0
10
20
30
40
50
60
70
80
90
100
EN55022A
EN55022Q
Date: 26.AUG.2015 15:26:19
150 kHz 30 MHz
2 AV
CLRWRTDF
dBµV
dBµV
CLRWR
6DB
1 PK
MT 10 ms
RBW 9 kHz
PREAMP OFFAtt 10 dB
PRN
1 MHz 10 MHz
0
10
20
30
40
50
60
70
80
90
100
EN55022A
EN55022Q
Date: 26.AUG.2015 15:26:19
© 2015 Fairchild Semiconductor Corporation 36 FEBFL7921RMX_L65U100A • Rev. 1.0
Figure 60. 277 VAC / 50 Hz, L Figure 61. 277 VAC / 50 Hz, N
150 kHz 30 MHz
2 AV
CLRWRTDF
dBµV
dBµV
CLRWR
6DB
1 PK
MT 10 ms
RBW 9 kHz
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EN55022Q
Date: 26.AUG.2015 15:31:38
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2 AV
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Date: 26.AUG.2015 15:29:53
© 2015 Fairchild Semiconductor Corporation 37 FEBFL7921RMX_L65U100A • Rev. 1.0
10. Revision History
Rev. Date Description
1.0.0 September 2015 Initial Release
WARNING AND DISCLAIMER
Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Users’ Guide. Contact an authorized Fairchild representative with any questions.
This board is intended to be used by certified professionals, in a lab environment, following proper safety procedures. Use at your own risk. The Evaluation board (or kit) is for demonstration purposes only and neither the Board nor this User’s Guide constitute a sales contract or create any kind of warranty, whether express or implied, as to the applications or products involved. Fairchild warrantees that its products meet Fairchild’s published specifications, but does not guarantee that its products work in any specific application. Fairchild reserves the right to make changes without notice to any products described herein to improve reliability, function, or design. Either the applicable sales contract signed by Fairchild and Buyer or, if no contract exists, Fairchild’s standard Terms and Conditions on the back of Fairchild invoices, govern the terms of sale of the products described herein.
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION.
As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
ANTI-COUNTERFEITING POLICY
Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com, under Sales Support.
Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise. Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.
EXPORT COMPLIANCE STATEMENT
These commodities, technology, or software were exported from the United States in accordance with the Export Administration Regulations for the ultimate destination listed on the commercial invoice. Diversion contrary to U.S. law is prohibited.
U.S. origin products and products made with U.S. origin technology are subject to U.S Re-export laws. In the event of re-export, the user will be responsible to ensure the appropriate U.S. export regulations are followed.