Service manual

CP-850/F Service Manual
-42-
4.10 STR - W6754
4.10.1 GENERAL DESCRIPTION
The STR-W6754 is an hybrid IC with a build-in MOSFET and control IC, designed for flyback converter type switch
mode power supply applications.
4.10.2 FEATURES
- Rugged 650 V Avalanche-Rated MOSFET, Simplified Surge Absorption, No VDSS Derating Required
- 0.96 Ω Maximum rDS(on)
- Two Operational Modes by Automatic Switching: Quasi-Resonant Mode for Normal Operation, Burst Mode for
Standby Operation or Light Loads
- Automatic or Manually Triggered Burst Standby Input Power <0.1 W at No Load
- Low Operating Current (6 mA typ)
- Auto-Bias Function Stable Burst Operation Without Generating Interference
- Internal Off-Timer Circuit
- Built-In Constant-Voltage Drive
- Multiple Protections: Pulse-by-Pulse Overcurrent Protection, Overload Protection with Auto Recovery, Latching
Overvoltage Protection, Undervoltage Lockout with Hysteresis
- RoHS Compliant
4.10.3 BLOCK DIAGRAM