ht7l5820 120w 15s, 2200ma outdoor led for lighting … · 2016-12-30 · 15 series 8 parallel led...

HT7L5820 120W 15S, 2200mA Outdoor LED for Lighting Application

1 / 28 AN0406E


D/N: AN0406E

Features

The switching power of this device is designed for outdoor LED lighting applications. Its

special features are summarised below:

• Wide AC input voltage range

• System architecture is isolation boost & flyback topology

• High efficiency, high power factor and low THD

• Insensitive to ambient temperature changes

• High constant current accuracy and good load regulation

• Full range of protection features such as LED open load protection, short circuit

protection and internal over temperature protection

• Simple system architecture design

Typical System Characteristics

15 series 8 parallel LED (KTRLIGHT/KTR-1W-GH30), 2200mA / 120W @ Open Frame

Description Wide Range (90VAC~265VAC) Input AC Frequency 47Hz~63Hz Output Voltage (VLED+) 36V~54V Output Current (IOUT) 2200mA(typ.) Output Current Ripple <25mA Line Regulation Ta = 25°C <1%@ 115VAC, <±3% @ 220VAC Load Regulation Ta = 25°C <±3%@ 115VAC, <±3% @ 220VAC Efficiency >87.5% @ 115VAC, >89.5% @ 220VAC Power Factor (EMI Solution) >0.99 @ 115VAC, >0.97 @ 220VAC THD <15% @ 115VAC, <15% @ 220VAC Standby Power Consumption <0.3W @ 115VAC, <0.3W @ 220VAC Output Short Circuit Power Consumption <1.0W @ 115VAC, <1.00W @ 220VAC Output Short Circuit Protection Yes Output Open Circuit Protection Yes


2 / 28 AN0406E

Application Circuit and BOM

9

13

16

14

6

4

SEL3

2

8

5

7

10

11

12

-+

+15Vdc

+15Vdc

+15Vdc

+2.5Vdc

+2.5Vdc

+-

+54Vdc

-+

+15Vdc

+-

+2.5Vdc

+2.5Vdc

+54Vdc

1COMP

INV

CSPFC

CSPWM

OPFC

VCC

OPWM

VSS

DET

FB

RT

VIN

ZCDHVS

HT7L5820

L1

F1

R1

R2

C1

L2

D4D3

R6

R7

R3

R4

R12

R13C8

D1

C2 C3

L3

L4

R9

C5

D6 R10

R8

R15R14

C9

Q1

R16

C4

D5

R11

R5

R18C10

R17

C6 C7

R10

1C

102C

101

R10

0a

R10

0

C10

0

D100

D101 R104

R102 R105

Q100

R103

C103 R106

D102

C108

R107

C107C107aR108

R109C109

C105

R110

RT100C106

R111

C104

U100

U203

R211

C212

R234

ZD200

R220R202

D200

C203 C204

T200

Rsn1 Csn1

D201

D202 R206

D203 R207

R216

Q201 C205

R208 C207

C206R213

U200:A

U200:B

R224 C208 R225

R218

R219

R215

R200

RJ01

R214

R201

Radj01

R217

R202

R203

C20

0

C20

1

R204

R205

L200

C202

D204

U201:A

U201:B

R232

Q200

R221

R209 Q202

R210

R222

C20

9R

223

C21

1

R22

9

D205

R212

C210

R226

R233

R227R228

R230R231

TVR1

FG

L

N

RTH1

LED-/FG

LED+

VDIM+

VDIM-

CV Control

CC Control

Component Package Parameter Manufacturer R11 SMD1206 RES 6.2M, ±1% R12 SMD1206 RES 3.3M, ±1% R3, R4, R5 SMD1206 RES 3M, ±1% R1, R2 SMD1206 RES 1.5M, ±1% R100, R100A SMD1206 RES 560K, ±1% R232, R233 SMD0805 RES 510K, ±1% R229 SMD0805 RES 330K, ±1% R17, R231 SMD0805 RES 200K, ±1% R108 SMD0805 RES 180K, ±1% R13 SMD0805 RES 150K, ±1% R224 SMD0805 RES 100K, ±1% R18 SMD0805 RES 75K, ±1% R9 SMD1206 RES 68K, ±1% R214 SMD0805 RES 68K, ±1% R221 SMD0805 RES 51K, ±1% R208 SMD0805 RES 30K, ±1% R6, R7 SMD1206 RES 24K, ±1% R109, R200 SMD0805 RES 15K, ±1% R228 SMD0805 RES 11.0K, ±1% R226, R230 SMD0805 RES 10.0K, ±1% R15, R105 SMD0603 RES 10.0K, ±1% R101 SMD0805 RES 8.2K, ±1% R216 SMD0805 RES 5.1K, ±1% R215 SMD0805 RES 3.9K, ±1% R220 SMD0805 RES 4.7K, ±1% R223 SMD0805 RES 1.5K, ±1% R222 SMD0805 RES 1.2K, ±1% R206, R207, R209, R210, R212, R217, R218, R219, R225 SMD0805 RES 1.0K, ±1%

R227 SMD0805 RES 510, ±1% R14 SMD0805 RES 470, ±1% R103 SMD0805 RES 240, ±1% R102 SMD0805 RES 150, ±1% R8 SMD0805 RES 91R, ±1% R104 SMD0805 RES 62R, ±1% RADJ01 SVR 20R R10 SMD0805 RES 15R, ±1% R201 SMD0805 RES 10R, ±1% R107 SMD0805 RES 1R0, ±1%


3 / 28 AN0406E

Component Package Parameter Manufacturer R106 BPR38 0R22 KOA R16 BPR38 0R12 KOA R202 SMD2512 RES 0R047 KOA R203 SMD2512 RES 0R039 KOA RJ01 SMD1206 RES 0R0 R213 SMD0805 RES 0R0 RT100, R110, R111, U203, R204, R205, R211, R234, ZD200, RSN1 (N.C)

RTH1 JUMP WIRE D1 GBU408, 4A, 800V D201 TO-220FPAB STTH2003CFP, 2×10A, 300V D3, D4 SMA/DO-214AC GS1M, 1A, 1KV D5 DO-201AD MUR460, 4A, 600V D6, D101, D202, D203 SOD-80 1N4148, 200MA, 100V D204 SMD0805 RES 0R0 D100 DO-15 GPP20M, 2A, 1KV D102, D200 SMA/DO-214AC ES1J, 1A, 600V D205 SOD-323 5V1, 200MW, C200, C201 DIP 12.5×16MM EL 270UF/63V 105°C C202 DIP 8×MM EL 100UF/63V 105°C C6 DIP 14.5×0MM EL 68UF/450V 105°C C107, C203 DIP 5×1MM EL 33UF/50V 105°C C2, C3 DIP ML 0.47UF/450V C205 SMD0805 CE 10UF/10V C102, C108 SMD0805 CE 1.0UF/50V C101 SMD0805 CE 470NF/50V C8 SMD0805 CE 220NF/50V C107A, C204, C207, C211 SMD0805 CE 100NF/50V C105 SMD0805 CE 47NF/50V C106, C209, C210 SMD0805 CE 10NF/50V C100 SMD1206 CE 2.2NF/1KV C10 SMD0805 CE 1.0NF/50V C9, C103 SMD0805 CE 470PF, 50V C4, C104 SMD1206 CE 330PF/1KV C208 SMD0805 CE 68PF/50V C109 SMD0805 CE 10PF/50V C1 DIP X CAP 0.47UF/250V C212 DIP Y CAP 2200PF/250V C5, C7, C206, CSN1 (N.C)

TVR1 DIP Y CAP 1000PF/1KV + Y CAP 1000PF/1KV

L1 COMMON CHOKE T13×6.5×5, 85UH L2 COMMON CHOKE T17×11.5×8.5, 28MH L3 T68-26A, 60T, 200UH, L4 PQ2620 300UH T200 PQ3220 920UH L200 COMMON CHOKE T15×11×8.2, 430UH Q1 TO-220FP TK10A60D, 10A, 600V Q100 TO-220FP SPA11N65C3, 11A, 650V Q200 SOT23-3 MMBT2222AL Q201 TO-92 TL431 Q202 SOT23-3 MMBT3906LT U202 DIP4 PC817 U200, U201 SOP8 LM2904 U100 SOP16 HT7L5820 HOLTEK


4 / 28 AN0406E

Protection Mode Part No. HT7L5820

Protection Mode

VCC OVP (VCC Pin) Latch Output OCP (FB Pin) Auto-Recovery Adjustable OTP (RT Pin) Auto-Recovery Output Voltage OVP (DET Pin) Auto-Recovery Internal OTP Auto-Recovery

System Board Introduction


5 / 28 AN0406E

Functional Description The HT7L5820 is a power controller which combines PFC with QR PWM. It includes

power a factor correction (PFC) controller operating in the boundary conduction mode

(BCM) and a Quasi-resonant (QR) flyback PWM controller. The following figure shows a

typical application circuit, with the BCM PFC converter in the front end and the

Quasi-resonant flyback converter at the back end.

9

1316

14

6

4

13

2

85

7

10

1112

-+

VB

VB

VB

VC

VC

+-

VA

SELCOMPINV

CSPFC

CSPWM

OPFC

VCC

OPWM

VSS

DET

FBRT

VIN

ZCDHVS

HT7L5820

BCM PFC QR PWM

The device achieves high efficiency and low standby power consumption with relatively

low cost for 40W~200W applications where the BCM PFC and QR PWM operations with

a single switch showing the best performance. The BCM boost PFC converter can

achieve better efficiency with lower cost than Continuous Conduction Mode (CCM) boost

PFC converter.

These benefits result from the elimination of the reverse-recovery losses of the boost

diode and zero-voltage switching (ZVS) or near-ZVS (also called valley switching) of the

boost switch. After the PFC boost circuit, the QR flyback PWM converter for the DC-DC

conversion achieves higher efficiency and lower switching losses than the conventional

hard-switching converter with valley switching.

In addition, the HT7L5820 also includes a variable PFC output voltage function. By

matching the proper output voltage, it will reduce PFC boost ON losses and QR PWM

DC-DC converter switch losses to improve the whole system efficiency when operating at

low voltage power.


6 / 28 AN0406E

BCM Boost PFC Converter Operation Principles

In the BCM operation mode, a new switching period is initiated when the inductor current

returns to zero, which is at the boundary of continuous conduction and discontinuous

conduction operations. Even though the BCM operation has a higher peak inductor

current in the power switch, the diode reverse recovery is eliminated, which is better for

the system EMI.

L

IL

IDS

ID

Irr

IDSID

MOSFET Turn_on

MOSFET Turn_off

IL

IDS ID

MOSFET Turn_on

MOSFET Turn_off

IL

CCM BCMBoost Converter

Another feature in the BCM is that the boost converter runs with a variable switching

frequency that depends primarily on the output voltage, the input voltage, the boost

inductance and the output power. The operating frequency changes as the inductor

current follows the sinusoidal input voltage waveform. The highest frequency occurs at

the valley of sinusoidal line voltage. The switching frequency in the boost power switch

will increase under conditions of light-load.

Quasi-resonant Flyback Converter Operation Principles

Quasi-resonant flyback converter topology can be derived from a conventional square

wave, PWM flyback converter. The basic operation principle is shown in the following

steps and diagram.

• During the MOSFET ON time, the input voltage (VIN) is applied across the primary-side inductor, Lm. When this happens the MOSFET current (IDS) increases linearly to the peak value (Ipk). Now the energy is stored in the inductor, Lm.

• When the MOSFET is turned off, the energy stored in the inductor, Lm, is released to the secondary-side inductor, which forces the rectifier diode, D, to turn on. During the diode ON time, the output voltage, Vo, is applied across the secondary-side inductor and the diode current, IS, decreases linearly to zero due to the released energy. At the end of the whole discharge period, all the energy stored in the inductor, Lm, has been delivered to the output. During this period, the output voltage is reflected back to the primary side as (VO-VD)×(NP/NS).

• When the diode current at secondary-side reaches zero, it causes a resonance between the primary-side inductor, Lm, and the MOSFET output capacitor, Coss, with an amplitude of Vo×(Np/Ns). Quasi-resonant switching is achieved by turning on the MOSFET and switching at the minimum voltage stress when VDS reaches its minimum value.


7 / 28 AN0406E

NP NS

VIN+

-

Lm

IS

IDS

VDS +

-

Vo

+

-

Ipk

MOSFET Turn_on

MOSFET Turn_off

IDS

IS

Ipk*Np/Ns

D

VDS

VIN

BCM PFC Boost Inductor Formula

The PFC boost inductance is obtained by using the following formula.

Definitions:

Maximum AC operation voltage: max,acV

Maximum PFC output voltage: max,, pfcoV

PFC boost switching efficiency: pfcη

PFC output power: pfcoutP ,

Minimum PFC switching frequency: min,, pfcswf Note that the minimum switching

frequency will affect the inductance, the audible noise, and the peak inductor current etc.

The related formula is:

max,,

max,max,,

min,,,

2max, 414.1

2 pfco

acpfco

pfcswpfcout

acpfc

VVV

fPVL ×−

×××

×=

η

Bring the actual application requirement into the above formula,

uH

VVV

fPVL

pfco

acpfco

pfcswpfcout

acpfc

323 415

264414.1415)1075(1302

2649.0

414.12

3

2

max,,

max,max,,

min,,,

2max,

=

×−×

××××

=

×−×

×××

=η


8 / 28 AN0406E

Boost Inductor (L4) Specification

Inductor PQ2620 SPEC

N1 (4-6)0.1mm*36N

2-UEW55T

N9 (2-3)0.2mm

2-UEW6T

BOBBIN

Tape 1.0T

Tape 2.0Ts2

3

6

4

6T55T

Need Gap: 4pin - 6pin L=300uH @1KHz/ 1V

The QR PWM transformer inductance is obtained in the following formula.

Definitions: Minimum PFC output voltage: min,, pfcoV

QR PWM switching efficiency: qrη

Reflected output voltage: ROV Note that the reflected output voltage will affect the

selectable voltage stress in the QR PWM power switch. Minimum QR PWM switching frequency: min,, qrswf

The resonance period falling time for the QR PWM power switch: fqrt ,

Bring the actual application requirement into the following formula,

362.0

)))102.1()1040((1(260160

160

)1(

63

,min,,min,,

max,

=

×××−×+

=

×−×+

=

−

fqrqrswpfcoRO

ROqr tf

VVVD

The QR PWM inductance is obtained for the actual application requirement:

uH

PfDVL

out,QRqrsw

qrpfcoqrPWMQR

877 120)1040(2

0.362)(2600.95

2)(

3

2

min,,

2max,min,,

,

=×××

××=

××××

=η


9 / 28 AN0406E

Transformer (T200) Specification

Tape 1.0T N1 (3-A)0.32mm*2N

2-UEW12T

N2 (5-X)0.025mm*8mm

Copper Foil1.2T

N3 (F-10)0.32mm

TIW15T

N4 (A-2)0.32mm*2N

2-UEW12T

N5 (F-10)0.32mm

TIW15T

N6 (2-B)0.32mm*2N

2-UEW12T

N7 (F-11)0.32mm

TIW15T

N8 (B-1)0.32mm*2N

2-UEW12T

N9 (F-11)0.32mm

TIW15T

N10 (6-5)0.32mm

2-UEW6T

N11 (8-9)0.2mm

TIW6T

BOBBIN

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 1.0T

Tape 2.0Ts

1 166

77

1212

Need Gap:1pin - 3pin L=900uH @1KHz/ 1V

Transformer PQ3220 SPEC

F (飛線, 線長50mm)

10

11

8

9

6

5

3

2

1

A

B

N1, 12TN3, 15T

N4, 12T

N6, 12T

N10, 6T N11, 6T

N5, 15T

N7, 15TN9, 15T

N8, 12T

Experimental Results System Performance Test Conditions:

AC input voltage range: 90VAC~265VAC.

LED load: 15S8P; Total input power: 120W.

VAC Pin(W) VLED+(VDC) IOUT(mA) POUT(W) Efficiency(%) PF THD(%) 90 124.4 48.1 2210 106.301 85.45% 0.9988 3.9455 100 122.71 48.1 2210 106.301 86.63% 0.9984 3.8272 115 121.09 48.1 2210 106.301 87.79% 0.9975 4.2456 135 119.64 48.1 2210 106.301 88.85% 0.9958 4.9855 180 114.76 47.9 2140 102.506 89.32% 0.9896 8.0049 220 114.22 47.9 2140 102.506 89.74% 0.9824 10.586 240 114.16 47.9 2150 102.985 90.21% 0.9765 12.016 265 114.01 47.9 2150 102.985 90.33% 0.9685 13.927

VAC LED Load Series 12 13 14 15

115 LED Current (mA) 2200 2210 2220 2210

PF. 0.9962 0.9967 0.9972 0.9975

220 LED Current (mA) 2150 2160 2160 2140

PF. 0.9757 0.9789 0.9785 0.9824

Note: The output current may vary due to sense resistance errors and soldering impedance.


10 / 28 AN0406E

Fig 1. Efficiency vs. AC Input Voltage

Fig 2. Iout Regulation vs. AC Input Voltage

Fig 3. Power Factor (PF) vs. AC Input Voltage (PF)

Fig 4. Iout Regulation vs. LED(s) Regulation

83%

84%

85%

86%

87%

88%

89%

90%

91%

90 100 115 135 180 220 240 265AC Input (VAC)

Effi

cien

cy

15S, 2200mA

2000

2050

2100

2150

2200

2250

2300

90 100 115 135 180 220 240 265AC Input (VAC)

Iout

(mA

)

15S, 2200mA

0.950.960.960.970.970.980.980.990.991.001.00

90 100 115 135 180 220 240 265AC Input (VAC)

Pow

er F

acto

r

15S, 2200mA

2000

2050

2100

2150

2200

2250

2300

12S 13S 14S 15S

LED Series

Iout

(mA

)

90VAC 100VAC 115VAC135VAC 180VAC 220VAC240VAC 265VAC


11 / 28 AN0406E

Fig 5. Efficiency vs. LED Series

Fig 6. Power Factor vs. LED Series

Fig 7. THD vs. AC Input Voltage

83%

84%

85%

86%

87%

88%

89%

90%

91%

90 100 115 135 180 220 240 265AC Input (VAC)

Effi

cien

cy

12S, 2200mA13S, 2200mA14S, 2200mA15S, 2200mA

0.93

0.94

0.95

0.96

0.97

0.98

0.99

1

90 100 115 135 180 220 240 265AC Input (VAC)

Pow

er F

acto

r

12S, 2200mA 13S, 2200mA14S, 2200mA 15S, 2200mA

02

46

810

1214

1618

90 100 115 135 180 220 240 265AC Input (VAC)

THD

(%)

12S, 2200mA13S, 2200mA14S, 2200mA15S, 2200mA


12 / 28 AN0406E

AC Power Turn-on

Fig 8. Start-up Time (115VAC)

Fig 9. Start-up Time (230VAC)


13 / 28 AN0406E

AC Power Turn-off

Fig 10. Turn-off Delay Time (115VAC)

Fig 11. Turn-off Delay Time (230VAC)


14 / 28 AN0406E

AC Power

Fig 12. Input Voltage/Current (115VAC)

Fig 13. Input Voltage/Current (230VAC)


15 / 28 AN0406E

LED Voltage/Current Ripple

Fig 14. Output Voltage/Current Ripple (115VAC)

Fig 15. Output Voltage/Current Ripple (230VAC)


16 / 28 AN0406E

Protection (1): Remove LED load after AC Power turn-on

Fig 16. Open Load Protection after Power-on (90VAC)

Fig 17. Open Load Protection after Power-on (265VAC)


17 / 28 AN0406E

Protection (2): Remove LED load before AC Power turn-on

Fig 18. Open Load Protection before Power-on (90VAC)

Fig 19. Open Load Protection before Power-on (265VAC)


18 / 28 AN0406E

Protection (3): Short LED Load after AC Power turn-on

Fig 20. Short Load Protection after Power-on (115VAC)

Fig 21. Short Load Protection after Power-on (230VAC)


19 / 28 AN0406E

Protection (4): Short LED Load before AC Power turn-on

Fig 22. Short Load Protection before Power-on (115VAC)

Fig 23. Short Load Protection before Power-on (230VAC)


20 / 28 AN0406E

Protection (5): Output Over-Voltage Protection (DET Pin)

Test Circuit Diagram

9

1316

14

6

4

SEL3

2

8

5

7

10

11

12

-+

+15Vdc

+15Vdc

+15Vdc

+2.5Vdc

+2.5Vdc

+-

+54Vdc

-+

+15Vdc

+-

+2.5Vdc

+2.5Vdc

Vdim

+54Vdc

1COMP

INV

CSPFC

CSPWM

OPFC

VCC

OPWM

VSS

DET

FB

RT

VIN

ZCDHVS

L1

F1

R1

R2

C1

L2

D4D3

R6

R7

R3

R4

R12

R13C8

D1

C2 C3

L3L4

R9

C5

D6 R10

R8

R15R14

C9

Q1

R16

C4

D5

R11

R5

R18C10

R17

C6 C7R

101

C10

2C10

1

R10

0a

R10

0

C10

0

D100

D101 R104

R102 R105

Q100

R103

C103 R106

D102

C108

R107

C107C107aR108

R109C109

C105

R110

RT100C106

R111

C104

U100

U203

R211

C212

R234

ZD200

R220U202

D200

C203 C204

T200

Rsn1 Csn1

D201

D202 R206

D203 R207

R216

Q201 C205

R208 C207

C206R213

U200:A

U200:B

R224 C208 R225

R218

R219

R215

R200

RJ01

R214

R201

Radj01

R217

R202

R203

C20

0

C20

1

R204

R205

L200

C202

D204

U201:A

U201:B

R232

Q200

R221

R209 Q202

R210

R222

C20

9R

223

C21

1

R22

9

D205

R212

C210

R226

R233

R227R228

R230R231

3VTest Switch

Test Conditions (1) AC input voltage is 115Vac/60Hz, the HT7L5820 creates a PWM output on OPWM

Pin.

(2) When Test Switch turns on, DEP Pin voltage is 3V, the controller stops switching

operation immediately.

(3) Until Test Switch turns off, the controller enters auto-recovery mode and creates

PWM output on OPWM Pin.

Waveform

Fig 24. Output Over-Voltage Protection (DET Pin)


21 / 28 AN0406E

Protection (6): Adjustable Over-Temperature Protection (RT Pin)


9

1316

14

6

4

SEL3

2

8

5

7

10

11

12

-+

+15Vdc

+15Vdc

+15Vdc

+2.5Vdc

+2.5Vdc

+-

+54Vdc

-+

+15Vdc

+-

+2.5Vdc

+2.5Vdc

Vdim

+54Vdc

1COMP

INV

CSPFC

CSPWM

OPFC

VCC

OPWM

VSS

DET

FB

RT

VIN

ZCDHVS

L1

F1

R1

R2

C1

L2

D4D3

R6

R7

R3

R4

R12

R13C8

D1

C2 C3

L3L4

R9

C5

D6 R10

R8

R15R14

C9

Q1

R16

C4

D5

R11

R5

R18C10

R17

C6 C7R

101

C10

2C10

1

R10

0a

R10

0

C10

0

D100

D101 R104

R102 R105

Q100

R103

C103 R106

D102

C108

R107

C107C107aR108

R109C109

C105

R110

RT100C106

R111

C104

U100

U203

R211

C212

R234

ZD200

R220U202

D200

C203 C204

T200

Rsn1 Csn1

D201

D202 R206

D203 R207

R216

Q201 C205

R208 C207

C206R213

U200:A

U200:B

R224 C208 R225

R218

R219

R215

R200

RJ01

R214

R201

Radj01

R217

R202

R203

C20

0

C20

1

R204

R205

L200

C202

D204

U201:A

U201:B

R232

Q200

R221

R209 Q202

R210

R222

C20

9R

223

C21

1

R22

9

D205

R212

C210

R226

R233

R227R228

R230R231

Test Switch


Pin.

(2) When Test Switch turns on, RT Pin short to ground, the controller stops switching

operation immediately.



Waveform

Fig 25. Adjustable Over-Temperature Protection (RT Pin)


22 / 28 AN0406E

Protection (7): Open-Loop, Short-Circuit, and Overload Protection (FB Pin)


9

1316

14

6

4

SEL3

2

8

5

7

10

11

12

-+

+15Vdc

+15Vdc

+15Vdc

+2.5Vdc

+2.5Vdc

+-

+54Vdc

-+

+15Vdc

+-

+2.5Vdc

+2.5Vdc

Vdim

+54Vdc

1COMP

INV

CSPFC

CSPWM

OPFC

VCC

OPWM

VSS

DET

FB

RT

VIN

ZCDHVS

L1

F1

R1

R2

C1

L2

D4D3

R6

R7

R3

R4

R12

R13C8

D1

C2 C3

L3L4

R9

C5

D6 R10

R8

R15R14

C9

Q1

R16

C4

D5

R11

R5

R18C10

R17

C6 C7

R10

1C

102C

101

R10

0a

R10

0

C10

0

D100

D101 R104

R102 R105

Q100

R103

C103 R106

D102

C108

R107

C107C107aR108

R109C109

C105

R110

RT100C106

R111

C104

U100

U203

R211

C212

R234

ZD200

R220U202

D200

C203 C204

T200

Rsn1 Csn1

D201

D202 R206

D203 R207

R216

Q201 C205

R208 C207

C206R213

U200:A

U200:B

R224 C208 R225

R218

R219

R215

R200

RJ01

R214

R201

Radj01

R217

R202

R203

C20

0

C20

1

R204

R205

L200

C202

D204

U201:A

U201:B

R232

Q200

R221

R209 Q202

R210

R222

C20

9R

223

C21

1

R22

9

D205

R212

C210

R226

R233

R227R228

R230R231

Test Switch


Pin.

(2) When Test Switch turns on, the controller enters hiccup mode.



Waveform

Fig 26. OLP and OCP Protection (FB Pin)


23 / 28 AN0406E

Protection (8): VCC Pin Over-Voltage Protection (OVP)


30VVCC

VSSDETZCD

9 13

16

14

6

4

SEL

3

2

8

5

7

10

11

12

1

COMP

INVCSPFCCSPWM

OPFC

OPWM

FB

RT

VIN

HVS

3V

VOPWM

4.5V

~

VSSDETZCD

VCC

Test Conditions (1) INV, FB and VIN Pin voltage are 3V.

(2) When VCC pin voltage is over turn-on voltage, the HT7L5820 creates a PWM output

on OPWM Pin.

(3) When VCC pin voltage is over OVP voltage, the controller stops switching operation

immediately and enters latch-off mode, until VCC pin voltage is under turn-off

voltage.

Waveform

Fig 27. VCC Pin Over-Voltage Protection


24 / 28 AN0406E

Protection (9): Internal OTP


VCC

VSSDETZCD

9 13

16

14

6

4

SEL

3

2

8

5

7

10

11

12

1

COMP

INVCSPFCCSPWM

OPFC

OPWM

FB

RT

VIN

HVS

3V

VOPWM

VSSDETZCD

VCC

18V

Test in chamber Ambient temperature : 25°C~150°C

Test Conditions (1) VCC Pin voltage is 18V.

(2) INV, FB and VIN Pin voltage are 3V.

(3) The HT7L5820 creates a PWM output on OPWM Pin. (4) When the temperature is over 150°C, the internal OTP function will be active to turn

off PWM switch.

(5) The controller will re-operate when controller temperature is under the recovery temperature about 90°C.

Waveform

25

50

75

100

125

150

175

200 150°C IC OTP，Stop PWM Switching

90°C IC Disable OTP ，Start PWM Switching

Time

TA(°C)

PWM Output

NO PWM Output

Fig 28. Internal OTP


25 / 28 AN0406E

System EMI

Fig 29. Conduction/Line_110VAC

Fig 30. Conduction/Neutral_110VAC


26 / 28 AN0406E

Fig 31. Conduction/Line_230Vac

Fig 32. Conduction/Neutral_230Vac


27 / 28 AN0406E

Fig 33. Radiation/Vertical_110Vac

Fig 34. Radiation/Horizontal_110Vac


28 / 28 AN0406E

Fig 35. Radiation/Vertical_230Vac

Fig 36. Radiation/Horizontal_230Vac

ht7l5820 120w 15s, 2200ma outdoor led for lighting … · 2016-12-30 · 15 series 8 parallel led...

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