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ZCC6908HV 替代MP6908 低边反馈

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    2022-5-9 15:00
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    [LV.4]偶尔看看III

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    发表于 2021-4-8 14:38 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式

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    DESCRIPTION
    , Z! @' x, b4 j7 X8 n' e0 _1 A  YThe ZCC6908HV , u+ u! ^/ Y3 x0 l/ b3 o# L
    is a Low-Drop Diode % ]# M% x4 N: s/ f
    Emulator IC that, combined with an external
    % Y) w' j$ N% hswitch, replaces : ]0 |% @" E# E, Q. V3 _
    Schottky diodes ( R$ [: K. U# ~! n
    in
    0 R  h3 a' y8 Q5 _high-efficiency Flyback converters. The chip( s' g* D/ k( A( t
    regulates the forward drop of an
    0 F4 Z/ i3 B' ^, \+ sexternal Synchronous Rectifier (SR) MOSFET to
    % I0 K$ a& ?7 D" V! xabout 40mV and switches it off as soon as the voltage becomes negative. ZCC6908HV& O- a3 u& n* ~# H3 B
    can generate its own supply voltage for battery charging applications with low output
    ! }# P3 w' N' Uvoltage or high side rectification applications. + M/ p: s$ J# ^" Z2 f
    A programmable ringing detection
    ( w2 G5 w! a$ q$ K: _3 V! ~9 Xcircuitry prevents ZCC6908HV false turn-on , Z2 s1 m, K/ G" [) [
    during DCM and Quasi-Resonant
    3 q( L& h- h% L' i  m* q3 w6 Z7 }operations.
    ) G! a8 H% s! P1 a/ }( W$ l. JZCC6908HV is available in space saving TSOT23-6 packages.0 c9 N8 p. {5 k( D' ~
    FEATURES
    " W# p. y1 V# y" R2 K4 s& d8 o6 A0 v: R7 V
    Operates in a wide output voltage range down to 0V; F) \2 g* Q& M  }4 {9 G
    # L2 f! I5 N+ K, R* q
    Self-supplying for operation with low output voltage3 N0 ?% q7 i! g& ?( q2 G
    rectification without an auxiliary winding: v) g+ t6 {/ a" K7 g3 T
    ●·
    : l$ M. r. f& JWorks with 12V Standard and 5V Logic Level SR MOSFETS
    , a; Q; I) }" j4 y●·
    + a4 X- A# Q. GCompatible with Energy Star, 1W Standby Requirements; D5 c2 V' x* a2 F1 i* ]8 d
    ●· 1 B2 r% @4 D) G, E6 V
    <30ns Fast Turn-off and Turn-on Delay$ c1 j1 R4 P. K* I
    ●· 9 \, o' U4 x$ g3 `$ x% g/ d
    <100uA Quiescent Current
    6 W8 \  W+ q; M) }, L7 H●· 5 f4 o* \: b) X& d% `6 V. j
    Supports DCM, Quasi-Resonant and CCM Operations
    1 p) n4 k9 _# G6 @; P" G( {; ]●·
    : T9 h4 X5 ~3 O  g5 \1 RSupports both High-side and Low-side Rectification
    , M& {4 ~; h; }' o4 {●· 3 @5 v8 w! k% A( e) j
    Power Savings of Up to 1.5W in a Typical Notebook Adapter& l% y$ o  q# _9 p) ?
    ●· 7 L7 @) {& X& ~# t; V7 E# e8 C
    TSOT23-6 Package Available
    4 J0 a  q0 R( V5 n ZCC6908HV 替代MP6908 低边反馈.pdf (296.69 KB, 下载次数: 0) 3 i$ K3 U4 s7 f% b, o' \; o

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