Weltrend | Products

AC/DC switching regulators

WT7162RG

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.

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

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