TFS757 Datasheet, PDF (1/36 Pages) Power Integrations, Inc. – Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High Voltage MOSFETs

TFS757-764HG
HiperTFS^™ Family
Combined Two-Switch Forward and Flyback Power Supply Controllers
with Integrated High Voltage MOSFETs
Key Benefits
• Single chip solution for two-switch forward main and flyback
standby
• High integration allows smaller form factor and higher power
density designs
• Incorporates control, gate drivers, and three power
MOSFETS
• Level shift technology eliminates need for pulse transformer
• Protection features include: UV, OV, OTP, OCP, and SCP
• Transformer reset control
• Prevents transformer saturation under all conditions
• Allows >50% duty cycle operation
• Reduces primary side RMS currents and conduction losses
• Standby supply provides built-in overload power compensation
• Up to 434 W total output power in a highly compact package
• Up to 550 W peak
• High efficiency solution easily enables design to meet
stringent efficiency specifications
• >90% efficiency at full load
• No-load regulation and low losses at light-load
• Simple clip mounting to heat sink without need for insulation pad
• Halogen free and RoHS compliant
Applications
• PC
• Printer
• LCD TV
• Video game consoles
• High-power adapters
• Industrial and appliance high-power adapters
Output Power Table
Product
TFS757HG
TFS758HG
TFS759HG
TFS760HG
TFS761HG
TFS762HG
TFS763HG
TFS764HG
Two-Switched Forward
380 V
Continuous Continuous
(25 °C)
(50 °C)
Peak
(50 °C)
193 W
163 W
228 W
236 W
200 W
278 W
280 W
235 W
309 W
305 W
258 W
358 W
326 W
276 W
383 W
360 W
304 W
407 W
388 W
327 W
455 W
414 W
344 W
530 W
Table 1. Output Power Table (See Notes on page 13).
Flyback
100 V - 400 V
50 °C
20 W
20 W
20 W
20 W
20 W
20 W
20 W
20 W
HiperTFS VDDH
L
HD
HS
D
DC
Input
Control,
Gate Drivers,
R
FB
Level Shift
DSB
FB
EN
EN
BP
G
S
Figure 1. Simplified Schematic of Two-Switch Forward and Flyback Converter.
www.powerint.com
Two-Switch Forward
Transformer
Flyback
Transformer
Main Output
Auxiliary/Standby
Output
RTN
EN
FB
PI-6200-102910
February 2011