welcome to the texas instruments new product update
TRANSCRIPT
Welcome to the Texas Instruments New Product Update
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Active Power Factor Correction
AC/DC Hero Products
2
< 30 W < 75 W < 300 W < 600 W
Valley Switch Flyback
PSR: UCC28704
SSR: UCC28742
Volt-Sec Balance SR
UCC24636
Active Clamp Flyback
UCC28780
VDS Sense SR
UCC24612
Transition Mode PFC
UCC28056
LLC Resonant
UCC25640x
VDS Sense SR
UCC24624
Interleaved TM PFC
UCC28064A
LLC Resonant
UCC25640x
VDS Sense SR
UCC24624
No Power Factor Correction
D2
RCS
+
–DRV
CS
CDD
VDD
GND
RS1
RS2
VS
NP
NA
RSTR
VAUX
VAC
NTC/SU
RLC
UCC28704
SOT23-6
COUTVOUT
RPL
VBLK
CB1
-t° RNTC
NS
Q1
Q2
UCC24636
SOT23-6
DRV GND
EMI FilterFull Wave
Rectifier
Isolated
DC/DCEMI Filter
Isolated
DC/DC
Full Wave
Rectifier
Power
Factor
Correction
Aux-less supply Aux-less supply +2x power density Small, simple design
SR
Fly
bac
k DCM Flyback , Opto
SOT23-6
UCC2863x
PSR, X-Cap Discharge
SOIC-7
UCC24630
5-24V, SR
V-sec Control, CCM
SOT23-6
UCC24610
5V, SR
VDS Sense Control
SOIC-8, SON-8
UCC24636
5-24V, SR
V-sec Control, DCM
SOT23-6
UCC28600
5-24V, Vo SR
VDS Sense Control CCM/DCM
SOT23-6
1.5x power density SSR , Active Clamp Flyback, ZVS Flyback
SOIC-16 , QFN
UCC28740
High Power Flyback DCM Flyback, SSR DCM Flyback, PSR
LM5023
SSR QR, HV Start Up
VSSOP-8
SSR QR
SOIC-8
CV/CC with HV Start Up
SOIC-7
3
LM5021
SSR Fixed Fsw
MSOP-8
Volt-Sec Balancing VDS Sensing
UCC24612
UCC28780
UCC28742
High Efficiency Flyback
UCC2870x/1x UCC28730
UCC28704
FET Driver
Enhanced Features
SOT23-6
FET Driver
1x: SOIC-7, 0x: SOT-23 Zero Standby Power
SOIC-7
UCC28720/2
BJT Driver
0: SOIC-7, 2: SOT-23
Production
Sampling
New
AEC-Q100
Presentation
Focus
Flyback Portfolio
Capable of both full ZVS and partial ZVS detections for
primary switches using GaN and Si FETs
- Fast, self correcting ZVS tuning with dead time optimizer
Switching frequency up to 1MHz
Mix-mode control
- Adaptive Amplitude Modulation with variable switching
frequency control
- Programmable Light load Adaptive Burst Mode
Resistor programmability for power stage optimization
Internal soft start, open/short pin fault, and programmable
Output OVP, brownout protection, OCP, OPP and OTP
Secondary-side regulation for CV/CC operation
Dual purpose ZVS sensing and high voltage startup
Logic level outputs with enable
Package: SOIC-16 and 3x3mm QFN (0.50mm pitch)
High-density adapters and chargers
USB PD for cell phone, tablet, and notebook chargers
AC/DC or DC/DC auxiliary power supplies
ZVS eliminates switching losses for higher switching frequency
- Reduced generated EMI and transformer size
Mixed mode control maximizes performance
- Maintain ZVS over line, load and component tolerances
- Highest average efficiency for the entire line/load range
- Reduces output voltage ripple
- Eliminates risk of audible noise
External HV start up FET enables standby power below 75mW
Flexible to work with Si FET driver or GaN power stages
Accurate OPP reduces required oversize of power stage components
Satisfies DOE Level VI and CoC v5 tier 2 efficiency standards
UCC28780 | High Frequency Active Clamp Flyback
4
Applications
Features Benefits
SOIC-16
QFN-16 UCC24612
~
~
+–VAC
Driver
CC/CV
Compesator
UCC28780
VOUT
RU
N
PW
MH
PW
ML
VD
D
FB
SW
S
Vsw
HV
G
Vsw
CS
VDD
VS
GND
NTC
RDM
RTZ BUR
REF
SET
REF
HVsense
VOUT
www.ti.com/product/UCC28780
What is an Active Clamp Flyback?
5
Eliminates switching losses and reduces EMI
with proper control of the clamp which allows
zero voltage switching (ZVS) to be achieved
Improves efficiency over traditional Flyback
converters by recirculating the leakage energy
and delivering it to the output instead of
dissipating it
Enables greater power density Lower
switching losses and corresponding temperature
rise enables higher switching frequencies, which
allows for smaller passive components and
tighter packaging
Traditional
QR Flyback
Active Clamp
Flyback
More information
training.ti.com/what-active-clamp-flyback
6
Power Level (W)
Po
wer
den
sit
y (
W/in
3)
9 W/in3
15 W
10
20
Best OEM
devices
today
11 W/in3
65 W
7 W/in3
45 W
* Open frame power density
30
19 W/in3 *
27 W
21 W/in3 *
45 W
30W/in3 *
65 W
30W/in3 *
100 W
7.9W/in3
90 W
Quasi Resonant Flyback
Active Clamp Flyback
TI Active Clamp Flyback vs QR Flyback
ACF Kick Start Designs
7
Design Number Power
Level
Output
Voltage FET
Power
Density
Full Load
Efficiency
UCC28780EVM-002 45W 20V GaN 22 W/in3 115V: 94.6%
230V: 94.7%
UCC28780EVM-021 45W 20V Si 18 W/in3 115V: 94.1%
230V: 93.8%
TIDA-01622 65W USB PD
(5, 9, 15, 20V) GaN 30 W/in3 115V: 93.8%
230V: 94.0%
PMP21479 65W USB PD
(5, 9, 15, 20V) Si 18 W/in3 115V: 93.6%
230V: 93.2%
TIDA-01623 100W
(PFC)
USB PD
(5, 9, 15, 20V) GaN 30 W/in3 115V: 92.6%
230V: 93.4%
TIDA-010047 100W
(PFC)
USB PD
(5, 9, 15, 20V) Si 22 W/in3 115V: 92.0%
230V: 93.1%
Alternative High Efficiency Topologies
8
Quasi Resonant Flyback ZVS Flyback Active Clamp Flyback
Efficiency, Power Density
System Cost
ZVS Flyback Pros & Cons • PRO
– ZVS across wide range of line/load/Vout – SR builds up
required negative current
– Uses high-eff SR & sec winding to build up ZVS current
• No need for auxiliary ZVS FET/winding
– High fsw small size & moderate power density
– Simpler design vs ACF – closer to regular QR
• CON
– Leakage energy still dissipated in snubber or clamp
• But may not be significant with low leakage transformer
(<1% common in many commercial adapters)
– May need 650/700-V pri FET – trade-off with Nps & snubber
– Moderate increase in cost & parts count vs QR
• Needs isolated gate drive for SR
9
ZVS Flyback
PMP21552 ZVS Flyback Demo Board
10
Features:
• Universal AC input 85-265 VAC
• USB-C PD Output 5/9/15/20 V @ 3.25 A (up to 65 W)
• Open-frame 45 x 55 x 25 mm (62 cc)
• RM8 size transformer
• Main FET – Si Superjunction
• Conducted and Radiated EMI compliant
90VAC/50Hz Input, 20V/3.25A Output
www.ti.com/tool/PMP21552
PFC & LLC Portfolio
PF
C
Improved Light-Load
Efficiency
SOIC-16 UCC28063A
LL
C
UCC25630x
LLC + HV Driver
SOIC-14
Production
Sampling
UCC25600
LLC Resonant
SOIC-8
UCC28050/1
New
UCC28180 UCC28070A/-Q1
UCC25710
Constant Current Output
PWM Dimming Input
SOIC-20
1-Ph CCM 2-Ph CCM 1-Ph TM 2-Ph TM
6-pin, High Performance
CRM/DCM PFC Controller
SOT23-6
High UVLO Threshold
Variable Frequency
SOIC-8
Average Current Mode
SOIC-20 , TSSOP-20
Improved Audible Noise
Immunity
SOIC-16
8-pin, Higher UVLO, OVP
SOIC-8 , PDIP-8
11
UCC28056
UCC256402/3/4
LLC + HV Driver
Improved light load mode
SOIC-14
UCC28064A
6-pin, CRM/DCM PFC Controller
Improved noise immunity
SOT23-6
UCC28056A/B/C UCC28065
High Frequency Operation
up to 800kHz
SOIC-16
AEC-Q100
Presentation
Focus
SR
5-24V, Vo Dual SR
VDS Sense Control
SOIC-8
UCC24624
X-cap
discharge
controller
Remove x-cap discharge circuitry (optional)
Remove auxiliary flyback bias supply due to
light load mode and integrated HV startup
System Advantages
AC
Input
Auxiliary Flyback
LLC
UCC25640x
SR
UCC24624
PFC
TM/CrM UCC28056
CCM UCC28180
Reduce output capacitance due to
improved transient response from hybrid
hysteretic control
Reduce EMI filter size from valley and soft
switching and LLC adaptive dead time
DC
Output EMI
Filter
13
Operation
Transition Mode
(TM, BCM, CrM)
Continuous
Conduction Mode
(CCM)
TM
UCC28056
Interleaved TM
UCC28064A
CCM
UCC28180
Interleaved CCM
UCC28070A
300 W 1 kW
Allows use of low
cost diode
CCM operation
reduces RMS
current thru inductor
Better PF/THD
than TM
Typical Power Level by Topology
PFC Operation
• Lighting
• DTV
• Computing supply and adapters
Applications
Benefits Features
• 6-pin TM PFC Controller with Valley Switching, unity
power factor and optimized THD
• Unified algorithm for working in CrM and DCM with High
power factor across the entire operating range
• No aux winding needed for ZCD
• <50mW no-load power consumption
• Fast, Enhanced Dynamic Response (non-linear control)
• Robust Protection:
• Fast response 2nd OVP on a dedicated Pin
• Soft-start and soft recovery after OVP
• Input voltage brown out detection
• Open-loop protection and under voltage protection
• Strong drive capability: 0.7A/1A source/sink
• Industry best light load efficiency with advanced light
load efficiency management
• Provides High Efficiency & Low THD with Fewest
External Components
• Superior No-Load and Light Load Efficiency
• Allows Fast Load Transient Response w/ Small Output
Cap
• No Inductor ZCD Winding Required Flexible Design
Options
• Full, Robust Protection (Same as 8-pin PFC ICs)
UCC28056x | CrM/DCM Mixed Mode PFC Controller
14
Remove auxiliary winding on inductor
UCC28056 Advantages
Reduce IC size by combining functionality to
single pin
Reduce loss from multi-mode CrM/DCM operation
with valley switching
8 Pin PFC
UCC28050/1
6 Pin PFC
UCC28056x
UCC28056 Variants
16
UCC28056 UCC28056A UCC28056B UCC28056C -A/-B/-C Advantage
Target
Application
Lighting
TV
Consumer AC/DC
Telecom 5G
Lighting
TV
PC Power
Industrial AC/DC
Consumer AC/DC
Telecom 5G
TV
PC Power
Industrial AC/DC
Consumer AC/DC
Telecom 5G
Target DC
Bus Voltage
High bus voltage
e.g. 415V
High bus voltage
e.g. 390V
High bus voltage
e.g. 390V
ZCD Noise
Sensitivity
Improvement
No Yes Yes Yes
Increases robustness by
eliminating potential for audible
noise and enter CCM
OVP
Threshold 10% 8% 10% 10%
Reduce overshoot on PFC output
during input surge or rapid
on/off/on
Optimized for PFC bus voltage OVP2 Yes No Yes Yes
Burst Mode
Threshold 10% 15% 15% 10%
Prevents burst mode from causing
audible noise at high line input
More Information: www.ti.com/lit/an/slua974/slua974.pdf
UCC28180 | 8-pin Continuos Conduction Mode (CCM) PFC Controller
17
• Low frequency operation supports use with IGBT
• High frequency operation supports GaN/SiC/Si FET
• Less than 5% THD from medium-to-full load (50-100%)
Features Benefits
• Universal AC Input
• Boost PFC converters
• Server & Desktop Power Supplies
• White Good Appliances (A/C, Refrig)
• Industrial Power Supplies (DIN Rail)
• Flat Panel TVs (PDP/LCD/LED)
• Wide Range Programmable Fixed Switching
Frequency Operation from 18 kHz to 250 kHz
• Enhanced Dynamic Response Circuit
• Reduced Current Sense Thresholds
• Audible Noise Minimization Circuitry
• Burst Mode for No Load Regulation
Applications
UCC28065 | Two-Phase Int TM PFC Controller with High Fsw
• IEC61000-3-2 compliant SMPS for DTV, OLED TV, monitor,
AIO, projector, gaming, audio equipment and industrial
• AC adapter front end power supplies
• Lighting, display and signage
• Telecom rectifier power supplies
Applications
Benefits Features
• 16-pin Two-phase interleaved TM PFC controller
• Supporting up to 800kHz switching frequency
• Exceeds Energy Star, CoC Tier 2, DOE level VI standards
• Fast, enhanced dynamic response (non-linear EA gain)
• Line Feed Forward Compensation
• Phase Shedding for high light load efficiency
• Line independent phase–off function (Adjustable)
• Burst mode allows very low standby consumption and
avoiding audible noise
• Soft-in and soft-out from burst cycle (Low Audible
noise)
• Adjustable Burst mode power level independent of
line voltage
• Reduced ICC consumption in light load condition
• Interleaving provides lower input and output current
ripple
• 2-3x lower Inductance compared to UCC28064A
• Good light load efficiecny based on burst mode
operation and phase shedding
• Excellent load and line transient response
• System (PFC + LLC) No Load power consumption of
120mW @ 230VIN with PFC stage still on exceeds
CoC version V Tier II standard
18
ZCD_B
VSENSE
UCC28065
TSET
PHB
ZCD_A
VREF
GDA
PGND
COMP
AGND
VINAC
HVSEN
VCC
GDB
CS
BRST
PHB Threshold
VRECT
L
N
RZCDARZCDB
CS
RCS
Burst Threshold
CS
VCC HVSEN
VSENSE
VSENSE +
–
HVSEN
LALB
VOUTVRECT
Currently in pre-production sampling. Will production release late May 2020
UCC28065 Changes from UCC28064A
19
Considering the tolerance and temperature range, the
maximum frequency is 800 kHz with 400 kΩ TSET resistor
UCC28065 maximum switching frequency is 2x higher
than UCC28064A
0 100 200 300 400 500RTSET (kΩ)
0
1
2
3
4
5
6
t min (
µs) UCC28064A
UCC28065
Parameter UCC28064A UCC28065
Zero crossing compensation On time increases when VINAC pin
voltage close to zero
Fixed on time regardless of VINAC
pin voltage
Minimum period
(frequency clamping) 𝑡𝑚𝑖𝑛 =
𝟏𝟔 ∙ 𝐶𝑡 ∙ 𝑉𝑡
5 ∙ 𝐼2 −𝑉𝑇𝑆𝐸𝑇𝑅𝑇𝑆𝐸𝑇
∙18
𝑡𝑚𝑖𝑛 =𝟖 ∙ 𝐶𝑡 ∙ 𝑉𝑡
5 ∙ 𝐼2 −𝑉𝑇𝑆𝐸𝑇𝑅𝑇𝑆𝐸𝑇
∙18
Recommended frequency at
low line (115 VAC) full load 20 kHz – 75 kHz 20 kHz – 150 kHz
UCC28065 Benefit
20
Device Inductance Inductor Dimensions
(Diameter, Height)
Switching Frequency
@ 90VAC, 300W
UCC28064A 340 µH D: 38 mm, H:17.5 mm 53.5 kHz
UCC28065 110 µH D: 28.3 mm, H: 12.3 mm 165 kHz
UCC28065 UCC28064A UCC28065 UCC28064A
30% Height Reduction 25% Diameter Reduction
Power Factor and iTHD
21
0.5
0.6
0.7
0.8
0.9
1
0 100 200 300
Po
we
r F
ac
tor
Load Power (W)
230V UCC28065
115V UCC28065
230V UCC28064A
115V UCC28064A
0
20
40
60
80
100
120
0 100 200 300
iTH
D (
%)
Load Power (W)
230V UCC28065
115V UCC28065
230V UCC28064A
115V UCC28064A
• Test conditions at 500 W with 110 µH inductor
• UCC28064A design has external circuit to disable the zero crossing compensation to
achieve reasonable power factor and iTHD performance
• UCC28065 has NO external circuit and is able to achieve better PF and iTHD
Efficiency
22
90%
92%
94%
96%
98%
0 100 200 300 400
Eff
icie
nc
y
Load Power (W)
230V
115V
90V
Component UCC28064A UCC28065
Boost Inductor 340 µH 110 µH
TSET Resistor 115 kΩ 300 kΩ
MOSFET IRFB11N60APBF STF33N60M6
R17
(Burst Level setting) 15 kΩ 7.5 kΩ
R29 (PHB setting) 47 kΩ 36.5 kΩ
UCC28064A EVM UCC28064EVM-004
modified to work with UCC28065
23
• Low audible noise at standby and light load
• Highly integrated feature-set reduces BoM cost
• Supports self-start power supplies, eliminates auxiliary flyback
power supply
• Enables compliance to CoC Tier 2 and DoE Level VI efficiency
standards with low system cost
• Optimized Low Power Mode and Burst Mode
• Burst mode with soft-on and soft-off periods
• Minimized audible noise at no load and standby
• User option to disable burst mode
• Opto-coupler low power operation
• Low standby power and high light load efficiency
• Hybrid Hysteretic Control (HHC)
• Best-in-class load and line transient response
• Inherent feedback to ensure 50% duty cycle
• Integrated high-voltage gate drivers
• Robust adaptive dead-time control
• Robust capacitive region (ZCS) avoidance scheme
• Built-in high voltage startup
• Active x-capacitor discharge
• Robust protection functions: Three level over-current, Over-
Temperature, Output over voltage, Input voltage UVLO
Features Benefits
• TV
• Lighting
• Industrial AC-DC adapter
• Power Tool
• Telecom
Applications
VCC
FB
LO
HO
HS
BLKVIn
BW
Vout
CrLr
Lm
ISNS
VC
R
4
6
5
3
1
10
11
14
15
16HV
LO
GND
LL/SS
HO
VCC
VCR
FB
BLK
7
UCC25640xLLC
Controller
HB
HS
12RVCC
9BW
ISNS
8
AC Line
AC Neutral
BLK
FB
ISNS
VCR
BW
HO
HS
LO
13 V to PFC controller bias
VCC
CSS
CBOOT
RHV
UCC25640x | Half Bridge LLC with Enhanced Audibility
Hybrid Hysteretic Control (HHC)
24
More Information: www.ti.com/lit/an/slua834a/slua834a.pdf
Outer Voltage Loop
DFC and HHC
Inner “Current”
Loop
HHC
What is HHC? HHC Results
DFC HHC
Hybrid Hysteretic Control (HHC) adds an
inner control loop to a traditional direct
frequency control (DFC) loop
HHC enables greater transient
response, enabling reduction of
output capacitance
UCC25640x Advantages
25
Industry best minimum
switch node slew rate
detection of 0.1 V/ns
Enhanced burst mode with
wide range programmability,
ability to dynamically adjust
or disable
User programmable initial
voltage for soft start Advantage
System
Benefit
Supports larger capacitor
on switch node, allowing a
FET with larger COSS or
increased snubber for EMI
Enables greater optimization
between standby power
consumption and
performance with reduced
audible noise
Enables programmable
maximum limit of switching
frequency during startup
0.00
0.50
1.00
1.50
2.00
0.00 1.00 2.00 3.00
Ga
in (
MG)
Normalized Fsw
Start fsw
Burst Mode Switching Pattern
LLC Transformer Current
UCC25640x Variants
26
UCC256402 UCC256402A* UCC256403 UCC256404 UCC256404A*
Target
Application
Industrial
Lighting
Industrial
Lighting
TV –Screen
Telecom, Industrial TV – Wide input LLC TV – Wide input LLC
Burst Mode
Algorithm
• 16 pulses burst packet
• No burst soft on/off
• Bust mode can be disabled
• 16 pulses burst packet
• No burst soft on/off
• Bust mode can be disabled
• 40 pulses burst packet
• Soft-on and soft off
• Bust mode can be disabled
• 40 pulses burst packet
• Soft-on and soft off
• Bust mode can be disabled
• 40 pulses burst packet
• Soft-on and soft off
• Bust mode can be disabled
Integrated
HV Startup Yes Yes No Yes Yes
X-Cap
Discharge No No No Yes Yes
Minimum
Detectable
Slew Rate
0.1 V/ns 0.1 V/ns 0.1 V/ns 0.1 V/ns 0.1 V/ns
BLK Start 3 V 3 V 3 V 1 V 1 V
BLK Stop 2.2 V 2.2 V 2.2 V 0.9 V 0.9 V
BLK OVP No Yes No No No
Bias Winding
OVP Auto-Restart Auto-Restart Auto-Restart Auto-Restart Latch
RVCC 13 V 13 V 13 V 13V 13V
*Currently in pre-production sampling. Will production release on March 20th.
New Product Updates now on our website!
27
https://training.ti.com/npu
Upcoming New Product Updates
28
Date Topic
3/26/2020 DACs
4/2/2020 Hi Speed Amplifiers
4/9/2020 Integrated Power Modules
4/16/2020 High Speed Signal Conditioning-
LVDS, M-LVDS & PECL
HDMI, DisplayPort & MIPI