SCYW99143 Datasheet, PDF (1/35 Pages) ON Semiconductor – Universal High Voltage Control Block

Customer Specific Device from ON Semiconductor
SCYW99143
Universal High Voltage
Control Block for SMPS
Controllers with Extremely
Low Stand-by Power
Consumption
Product Preview
The SCYW99143 is an HV control circuit specifically
designed for flyback and other SMPS controllers for
applications with extremely low no−load consumption. The
internal startup current source supplies the SCYW99143
DIE and slaved SMPS controller during start−up. This
function greatly simplifies the design of the auxiliary supply.
The built−in Brown−out protection with X2 capacitor
discharger allow for omitting inefficient resistor networks
which usage would result in unacceptable standby power
consumption increase. An Off−mode allows reaching
extremely low no−load input power consumption by turning
whole device off and thus minimizing the power
consumption of the control circuitry.
PAD CONNECTIONS
Features
• High Voltage Start Up
• Internal Brown−Out Protection
• Buffered Brown−Out Divider Output Available
• Automatic and Lossless X2 Capacitor Discharge
Function
• Remote Input for Standby Operation Control
• Active ON or OFF Off−mode Options
• Auto−Recovery Timer
• Open Collector Switch for Disabling Slave SMPS
Controller
• Up to 28−V V_cc Operation
• Extremely Low No−load Standby Power
• Latched Short−Circuit Protection (only for co−package
option)
• Internal Thermal Shutdown with Hysteresis
• This is a Pb−Free Device
This document contains information on a
product under development. ON Semiconductor
reserves the right to change or discontinue this
product without notice.
This document, and the information contained herein,
is CONFIDENTIAL AND PROPRIETARY and the
property of Semiconductor Components Industries,
LLC., dba ON Semiconductor. It shall not be used,
published, disclosed or disseminated outside of the
Company, in whole or in part, without the written
permission of ON Semiconductor. Reverse
engineering of any or all of the information contained
herein is strictly prohibited.
E 2012, SCILLC. All Rights Reserved.
Typical Applications
• Flyback and Other SMPS Converters with Extremely
Low Stand−by Power Consumption
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2013
1
February, 2013 − Rev. P0
Publication Order Number:
SCYW99143/D