LD969JK1High Voltage Multi-Mode PWM Controller of Flyback with GaN Integrated
The LD969JK1 is a green mode PWM IC built-in with brown-in/ out functions in a LSOP-9-EP package. It minimizes the component counts, circuit space, and reduces the overall material cost for the power applications.
The LD969JK1 features HV start, green-mode power-saving operation, soft-start functions to minimize the power loss and enhance the system performance. With complete protection in it, as OPP (Over Power Protection), Over Current Protection (OCP), OVP (Over Voltage Protection), brown-in/out protection and internal Over Temperature Protection (OTP), LD969JK1 prevents the circuit from being damaged under abnormal conditions.
Furthermore, the LD969JK1 features frequency swapping and soft driving function to minimize the noise and improve EMI.
Features
- Integrated 700V GaN HEMT
- High-Voltage (700V) Startup Circuit
- Secondary-side feedback control with quasi-resonant operation
- Built- in X-Cap Discharge on HV pin
- 227kHz maximum switching frequency
- OVP (Over Voltage Protection) on VCC
- OVP (Over Voltage Protection) on FB
- OCP/OPP Protections
- Smart stabilization system and high efficiency for USB-PD App
- Adj. CS_OTP (Over Temperature Protection)
- AC OVP Protection
Applications
- Switching AC/DC Adaptor and Battery Charger
- Open Frame Switching Power Supply
