STCMB1 datasheet(1/59 Pages) STMICROELECTRONICS

Part #	STCMB1

Description	TM PFC with X-cap discharge and LLC resonant combo controller

PDF	59 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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1 / 59 page

This is information on a product in full production.

January 2018

DocID028958 Rev 4

1/59

STCMB1

TM PFC with X-cap discharge and LLC resonant combo controller

Datasheet

- production data

Features

 Common features

– SO20W package

– 800 V high voltage start-up with integrated

input voltage sensing

– Active input filter capacitor discharge

circuitry for reduced standby power

compliant with IEC 62368-1 and UL Demko

certified

– Independent debug mode for both

converters

 PFC controller features

– Enhanced constant on-time PFC with input

voltage feedforward, THD optimizer

– Complete set of protections: ac brown-

in/out, inrush control, OVP, OCP, inductor

saturation, feedback disconnection

 LLC controller features

– Proprietary timeshift control for improved

input ripple rejection and dynamic

response

– Half-bridge operation up to 750 kHz with

self-adjusting deadtime

– Complete set of protections: dc brown-out,

two-level OCP, hard switching prevention

(HSP) function for anti-capacitive mode

protection and safe start-up

– Synchronous burst mode operation with

PFC enhances light-load efficiency

Applications

 Ac-dc adapter, open frame SMPS

 SMPS for LED TV, desktop and all-in-one PC

 Consumer and industrial SMPS compliant with

“Energy Using Product” directive (EuP) Lot 6,

DOE and European CoC ver. 5, Tier 2

 LED street lighting

SO20W

www.st.com

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