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EM8557A - PWM Converter

General Description

EM8557A is a high performance, low cost, HV Start-up, current mode PWM controller with green mode power saving.

The EM8557A integrates functions of Soft Start (SS), Under Voltage Lockout (UVLO), Leading Edge Blanking (LEB), internal Over Temperature Protection (OTP), and internal slope compensation.

Key Features

  • more protection like Over Load Protection (OLP) and Over Voltage Protection (OVP) to prevent circuit damage occurred under abnormal conditions. The EM8557A also has line under-voltage protection (Brown-out Protection). Features 600V High Voltage Start up Circuit Current Mode Control Soft Start Function Built-in Slope Compensation Internal Leading-edge Blanking Brown in/out Protection Over Voltage Protection (OVP) on VCC pin Over Load Protection (OLP) Cycle-by-cycle Current Limit Feedback Open P.

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Datasheet Details

Part number EM8557A
Manufacturer Excelliance MOS
File Size 310.41 KB
Description PWM Converter
Datasheet download datasheet EM8557A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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EM8557A HV Start-up Green-mode PWM Convertor with Brown-Out Protection General Description EM8557A is a high performance, low cost, HV Start-up, current mode PWM controller with green mode power saving. The EM8557A integrates functions of Soft Start (SS), Under Voltage Lockout (UVLO), Leading Edge Blanking (LEB), internal Over Temperature Protection (OTP), and internal slope compensation. The EM8557A also features more protection like Over Load Protection (OLP) and Over Voltage Protection (OVP) to prevent circuit damage occurred under abnormal conditions. The EM8557A also has line under-voltage protection (Brown-out Protection).