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AC-DC

Richtek provides comprehensive products for switching power supplies that complete AC-DC conversion, including PFC controllers, flyback PWM controllers used in switching power supplies, secondary side regulators, synchronous rectifier controller and more. Our products with different features meet various application requirements and optimize the performance. Designing with our products simplifies the design process by reducing the number of components and improving system reliability.

PFC Controllers

Boost Pre-conditioner for multi-stage AC-DC power factor correction.

Multi-Mode Flyback Controllers

Easy-to-use flyback PWM controllers featuring the smartjitterTM technology and sophisticated power save mode.

Secondary Side Regulators

Isolated secondary current controller designed for lighting applications that require power line isolation for safety and reliability.

Synchronous Rectifier Controllers

To drive power MOSFETs which replace the rectification diodes in the secondary side of SMPS for higher efficiency.

Documents and Tools

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Selection Guides

2020/12/28
Richtek Selection Guide [Oct., 2020]

Application Notes

Title Date Action
Power Management Introduction 2019/12/12

Multi-Mode Flyback Controllers

Title Date Action
Conducted EMI Reduction by Means of Hybrid Common Chokes 2020/12/31
Feedback Control Design of Off-line Flyback Converter 2020/12/31
Cable Compensation of a Primary-Side-Regulation Power Supply 2016/06/21
How to Eliminate Over Stress of MOSFET during Start-up of Flyback Converter 2016/04/08

Videos

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