WT7162RH数据手册Weltrend中文资料规格书

描述 Description

The WT7162RH 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 WT7162RH 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 WT7162RH minimizes the components counts and is available in a SOP-10/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 WT7162RH can easily provide 3.3V~21V (7x volts) wide-range output voltage application to effectively reduce total BOM cost.

特性 Features

●180 kHz Max. Frequency Operation
●600V 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/Short Protection
●Green Package: 10-pin/8-pin SOP/td>