WT7162RG数据手册Weltrend中文资料规格书

描述 Description

The WT7162RG is a high frequency multi-mode (QR/Valley Switching) Flyback PWM controller. It is specifically designed to work with USB PD controller to provide a total solution for USB PD or a programmable power adapter. The WT7162RG helps to improve the overall efficiency and optimize the product performance. It operates in quasi-resonant (QR) mode during heavy load and operates in discontinuous conduction mode with valley switching during light load. The WT7162RG minimizes the components counts and is available in a SOP-08 package. It provides important protection features, such as Brown In/Out, VDD OVP, OLP, OCP and Output Short Circuit Protection. Without an external LDO circuit, the WT7162RG can easily provide 3.3V~21V (7x volts) wide-range output voltage application to effectively reduce total BOM cost.

特性 Features

• 6V Direct GaN FET Driver
• 180 kHz Max. Frequency Operation
• 700V Ultra HV Start-up Current
• Ultra HV Valley Charge Mode (VCM) for Wide Output Voltage Operation (USB PD 3.0 & PPS 3.3V~21V)
• Optimized for Wide Output Voltage
- Adaptive OCP Compensation with Adjustable Line Compensation
- Adaptive Green Mode Control
- No External VDD Linear Regulator Circuit
- Only One VDD Auxiliary Winding
• QR Mode/Valley-Switching Multi-Mode Operation
• Built-in X-Cap Discharge Function
• Internal Soft-Start Function
• Protection:
- Brown In/Out Protection on HV Pin
- Output Over Voltage Protection (VS_OVP)
- VDD Over Voltage Protection (VDD_OVP)
- Open Loop Protection (OLP) when Feedback Loop Open
- Over Current Protection (OCP)
- Internal Over Temperature Protection
- CS Pin Open Protection
• Green Package: 8-pin SOP