Power IC for Quasi-Resonant Type Switching Power Supply
Power IC for Quasi-Resonant Type Switching Power Supply with High Efficiency and Low Noise in Full Load Range
STR-X6759B...
Description
Power IC for Quasi-Resonant Type Switching Power Supply with High Efficiency and Low Noise in Full Load Range
STR-X6759B
Sep. 2013
◆General description
The STR- X6759B is power IC for quasi-resonant type switching power supply, incorporating a power MOSFET and a controller IC. The product achieves high efficiency and low noise power supply systems by the quasi-resonant operation.
◆Features
Quasi-resonant operation mode Achieves the optimal high efficiency and low noise power supply systems.
Current mode control Built-in PWM oscillator
The PWM operates with the minimum frequency of around 22kHz, until the quasi-resonant signal becomes valid, reduces the stress on components at startup and load-shorted. Built-in soft start function Step-drive function, reducing switching noise Input compensation at overcurrent The function reduces the distortion of overcurrent operation point to AC input voltage change by adding three components. Avalanche energy guaranteed by two chips structure (Simplification of surge absorbing circuit) Protection functions
Overcurrent protection (OCP); Pulse-by-pulse Overload protection (OLP); latched shutdown Overvoltage protection (OVP); latched shutdown
◆Package
Package name: TO-3PF-7L
◆Specification
MOSFET
500V(MIN), 0.36Ω(MAX)
◆Application
Switching power supplies for LCD-TVs, PDP-TVs, CRT-TVs and Digital consumer
equipment Home appliances OA equipments Industry machines Communication devices
◆Typical application circu...
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