Description

The STRX6757 is a power IC for a quasi-resonant type switching power supply. It incorporates a power MOSFET and a controller IC, achieving high efficiency and low noise power supply systems. This model is a part of the STR-X6700 series products, which also includes the STR-W6700 series versions in a different package (TO-220F).

Specifications and features

- Multi-Mode Control: The operation mode can be switched with three steps according to load conditions, ensuring optimal high efficiency and low noise power supply systems across the full load range. Please verify the product number for specific functions as they may vary.

- Current-Mode Control

- Built-in PWM Oscillator: Operating with a minimum frequency of around 22 kHz, the PWM reduces stress on components during startup and load-shorted.

- Soft-Start Function

- Step-Drive Function: Reduces switching noise

- Built-in Maximum ON Time Limitation Circuit: Limits the maximum ON time of the power MOSFET during transitions at low input voltage and power ON/OFF

- Input Compensation at Overcurrent: Reduces distortion of overcurrent operation point with AC input voltage change

- Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET

- Various Protections: Overcurrent Protection (OCP) - Pulse-by-Pulse, Overload Protection (OLP) - Latch Shutdown, Overvoltage Protection (OVP) - Latch Shutdown

Application Scenarios

The STRX6757 is commonly used in switching power supplies for digital consumer equipment such as LCD-TVs, PDP-TVs, CRT-TVs, as well as home appliances, OA equipment, industry machines, communication devices, and others.

Comparison

- High efficiency and low noise power supply system

- Multi-mode control for optimal performance across load conditions

- Built-in protections for overcurrent, overload, and overvoltage

- Various features including current-mode control, built-in PWM oscillator, soft-start function, step-drive function, and more.

- None identified