LD7797ODTransition-Mode PFC and Quasi-Resonant Current Mode PWM Controller to Drive E-Mode GaN FET
The LD7797OD features transition mode Power Factor Correction (PFC) voltage mode controller and Quasi-Resonant (QR) current mode controller for high power application.
There are low voltage driving mechanism on both PFCDRV and FBDRV pins, which is suitable to drive E-mode GaN FET for better performance.
The IC also integrates several functions of protection, such as Brown-In/Out Protection(BNI/BNO), Over Load protection (OLP), Over Temperature Protection (OTP), PFC Bulk Over Voltage Protection (PFCOVP), Output Over Voltage Protection (FBAUXOVP), Over Current Protection (OCP) with high / low line compensation and a latch pin for customize control. Therefore it can protect the system from damage due to occasional failure.
The LD7797OD is available in a SOP-16 package.
Features
- Integrated PFC Boost and QR Flyback Controller
- Voltage mode transition operation for PFC
- Current mode quasi-resonant operation for Flyback
- 180V VIN max rating for wide range VOUT application
- Smart stabilization system and high efficiency for USB-PD application
- Brown in/out protection and X-cap discharge function
- Internal soft start function and PFC on/off control
- OVP (Over voltage protection)
- OCP (Cycle by cycle current limiting)
- Internal OTP function and external protection control
- 15/-150mA PFC Gate Source/Sink Capability
- 15/-150mA Flyback Gate Source/Sink Capability
Applications
- Power Delivery (PD) Application
- Power Adapter
