ZCC6908HV 替代MP6908 低边反馈

Siweidianzi

DESCRIPTION
The ZCC6908HV is a Low-Drop Diode Emulator IC that, combined with an external
switch, replaces Schottky diodes in high-efficiency Flyback converters. The chip
- ]1 C6 s, ^! N# c0 R2 `regulates the forward drop of an external Synchronous Rectifier (SR) MOSFET to
about 40mV and switches it off as soon as the voltage becomes negative. ZCC6908HV
5 m5 A( o0 e  e% U+ p6 d! Q& u; [can generate its own supply voltage for battery charging applications with low output
voltage or high side rectification applications. A programmable ringing detection
. m: A& I9 x/ ?( J/ p5 }( ?circuitry prevents ZCC6908HV false turn-on during DCM and Quasi-Resonant
. X, G/ s/ t6 J" n3 Y! ?* Eoperations.
+ {/ x& Z2 W/ l2 `+ {% zZCC6908HV is available in space saving TSOT23-6 packages.
" g! [: C, i6 _4 {' X% X% gFEATURES
$ g5 ^; ~4 D  v' s+ C( z. R● Operates in a wide output voltage range down to 0V
, x' h" h0 s2 }% W8 {8 S: f8 {( m% B● Self-supplying for operation with low output voltage
rectification without an auxiliary winding
* e' \/ y5 Z6 H# H7 W' M; t●· Works with 12V Standard and 5V Logic Level SR MOSFETS
" n8 V8 l# n1 l; s* U0 s●· Compatible with Energy Star, 1W Standby Requirements
/ Z7 Z' r5 m; P+ Z+ |●· <30ns Fast Turn-off and Turn-on Delay
7 Z: {5 z: O, ]7 Q●· <100uA Quiescent Current
●· Supports DCM, Quasi-Resonant and CCM Operations
●· Supports both High-side and Low-side Rectification
, M+ U  d) f% B4 I8 n●· Power Savings of Up to 1.5W in a Typical Notebook Adapter
- z: U0 X8 U: d% V. k" i6 v●· TSOT23-6 Package Available
6 F( W" v% E) w; e* i0 u8 eAPPLICATIONS
( ?$ m; Q7 e$ |3 H0 f. \●
Industrial Power Systems
# c' [2 u) H% ~: n●
% o3 J, a  b* K% T- t: z3 o" S% JDistributed Power Systems
' o0 e" E2 ]/ B5 M! s1 q●
Battery Powered Systems
- X* R- h: _# v/ ?  h: |●
Flyback Converters
) m7 j  b! f+ A! [, G4 I