Description

The STR-W6252 is a power IC for switching power supplies in the AC DC Converters and Offline Switchers category. It incorporates a power MOSFET and a current-mode type PWM controller IC. The product achieves high cost-performance power supply systems with few external components, thanks to its low standby power and automatic switching between PWM operation and burst-oscillation under light load conditions.

Specifications and features

• Current-Mode Type PWM Control
• PWM with Jittering Function: reduces EMI noise and enables simplified (low-cost) EMI filters
• Auto-Standby Function: enables low standby power with input power < 100mW at no load
• Built-in Startup Circuit: enables low power consumption
• Overcurrent Protection (OCP) with Built-in Input Compensation Circuit: has less AC input voltage dependency
• Overload Protection (OLP) with Built-in Delay Timer: delay time is adjustable
• External Latch Protection (ELP): enables latch shutdown by external signal
• Bias-Assist Function: reduces operating VCC voltage drop and improves startup operation
• Leading Edge Blanking Function
• Slope Compensation Function
• Built-in Avalanche Energy Guaranteed High-Voltage Power MOSFET
• Various Protections: Overcurrent Protection (OCP), Overload Protection (OLP), Overvoltage Protection (OVP), Thermal Shutdown Protection (TSD)

Application Scenarios

The STR-W6252 is commonly used in switching power supplies for home appliances (white goods), digital consumer equipment, OA equipment, industry machines, communication devices, and others.

Comparison

- Achieves high cost-performance power supply systems

- Low standby power

- Automatic switching between PWM operation and burst-oscillation

- Various built-in protections

- None identified