TFS7708H
Combined Two-Switch Forward and Flyback Power Supply Controllers with Integrated High-Voltage MOSFETs
Product Details
Description
The HiperTFS-2 devices incorporate a high-power two-switch-forward converter and a mid-power flyback (standby) converter into a single, low-profile eSIP™ power package. The single chip solution provides the controllers for the two-switch-forward and flyback converters, high- and low-side drivers, all three of the high-voltage power MOSFETs, and eliminates the converter’s need for costly external pulse transformers. The device is ideal for high power applications that require both a main power converter (two-switch forward) up to 586 W peak, and a standby converter (flyback) up to 20 W. The devices operate over a wide input voltage range, and can be used following a power-factor correction stage such as HiperPFS.
New with HiperTFS-2
- Improved assembly flow – changed from 3 row package to 2 row package
- Up to 40% more peak power – easily meeting the next generation Intel CPU peak power requirement
- Self biased high-side driver – eliminating bias winding
- Main convertor now offers 66kHz/132kHz options
Product Highlights
Key Benefits
- Single chip solution for two-switch forward main and flyback standby
- High integration allows smaller form factor and higher power density designs, with reduced component count
- Incorporates control, gate drivers, and three power MOSFETs
- Level shift technology eliminates need for pulse transformer
- Protection features include: UV, OV, OTP, OVP, standby OPC, SCP, and ILIMIT
- Transformer reset control, prevents saturation under all conditions
- Main duty cycle operation above 50% for reduced rms currents and lower output diode voltage rating
- Less than 10% variation in standby overload power over input voltage range
Applications
- PC (80 PLUS Bronze and 80 PLUS Silver)
- Printer
- LCD TV
- Video game consoles
- High power adaptors
- Industrial & appliance
Specifications
| Output Power (Max) - Peak, 380V | 586.00 W |
| Output Power (Max) - Flyback, Univ | 20.00 W |
| Output Power (Max) - Continuous, 380V | 343.00 W |
| Switching Frequency (max) | 132 kHz |
| Breakdown Voltage | 725 V |
| Voltage - Input (Min) | 90 V |
| Voltage - Input (Max) | 265 V |
| Auto-Restart & Overvoltage Response |
Auto-restart
Latch Off
|
| IC Package | eSIP-16F |
| Mounting Type | Through Hole |
| Over-Temperature Response | Hysteretic |
| Temperature - Operating (Min) | -40 °C |
| Temperature - Operating (Max) | 150 °C |
| Control Features |
Selectable Current Limit
Frequency Jittering
Auto-Restart/Latching Fault Response
On/Off Control
|
| Protection Features |
Input Overvoltage
Input Undervoltage
Line-compensated Overload
Output Overload
Output Overvoltage
Output Short Circuit
Output Undervoltage
Overtemperature
Remote Shutdown
|
| Topology |
Flyback
2-Switch Forward + Flyback
|
| Product Sub-Type | PMIC |
| Secondary Response | Auto-restart |
