The STR- X6750B 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.
Feature
General description
The STR- X6750B 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
Application
Switching power supplies for
◆LCD-TVs, PDP-TVs, CRT-TVs and Digital consumer equipment
◆Home appliances
◆OA equipments
◆Industry machines
◆Communication devices
(Picture:Pinout / Diagram)
