LD7593DATransition-Mode PFC Controller with ZCD by Auxiliary Winding Sensing
The LD7593DA is a voltage mode PFC controller operating in transition mode, with several integrated functions of protection, such as OVP, OCP and internal OTP.
The LD7593DA features transition mode for power factor correction. High efficiency and a low switching noise are achieved by zero current switching. The AC input voltage is sensed to compensate the OCP and PF value between high and low AC input voltage.
LD7593DA is available in a SOP-8 package.
Features
- Transition Mode of PFC Pre-Regulator
- Voltage Mode Control
- Low Startup Current (<1mA)
- UVLO (Under Voltage Lockout)
- LEB (Leading-Edge Blanking) on CS pin
- VO OVP (Over Voltage Protection) on INV pin
- OCP (Cycle by Cycle Current Limit)
- 300/-700mA Driving Capability
- Input Voltage Compensation
- Internal OTP (Over Temperature Protection)
Applications
- LCD TV Power Supply
- PC Power Supply
