ZCC5160-同步降压芯片60V /3A V2.0(1)

四维电子

, [% D  S+ T. w. zFeatures
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20-μA Quiescent current in regulation
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Input voltage range: 4V-60V
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+ w, l  W" P/ Y& G3 i- |Output voltage range: 1V-VIN
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) K$ \6 ]) w& E( [+ C1 L9 d7 A0 gIntegrated upper and lower power MOSFET
' S* w1 s3 G; V5 smaximum current: 5A
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Adjustable frequency range: 200KHz~2MHz
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4 Y( P; N, _4 E9 `2 r. @Automatic switching of CCM/DCM/PFM mode
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& E1 Z8 ?- j3 s3 GAdjustable soft-start time and Output voltage
" Z9 L! }/ w' z2 Q, J3 ttracking capability
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Automatically switched bypass linear power
supply
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/ z- t& \: y; I, [& ?6 ~Provides ultra-low input and output dropout
5 @4 B9 k* [7 k  }7 \( ^/ [5 Mvoltage close to 100% duty cycle
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5 A2 N7 [* E* u: G& EInternal Compensation
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$ d) O# D' c4 g0 QPower-good flag
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3 B' e  w- i- v9 w0 i2 w  _. K- ^Dynamic Frequency Stretch Technology
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: r. ~' E. ^5 W# z: d( M) hSupport large capacitive load start-up
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Protection function: UVLO/OCP/SCP/OTP/OVP
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  q6 b1 d" V3 s' N% BOperating junction temperature range: -40℃ to
7 e6 d2 I4 I% q7 w- j+125℃
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All pins have ±2000V (HBM) ESD protection
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6 G  D* G! ]7 `! b* JETSSOP 16-Pin Exposed Pad Package
5 M$ G  u* a* d; I+ |Applications
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& o! u* ?3 v5 h6 A5 dIndustrial power supply
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& m, a, `: g& N* E7 HWide voltage input range power supply
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Low ripple low noise power supply
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Automotive electronic power supply
; t0 h+ d6 o2 M" r7 w+ vDescription
ZCC5160 is a step-down DC/DC regulator with an
internal switch, featuring SKIP control mode, which
" d1 W. {! o( u9 ]combines low quiescent current with high switching
; b. s/ t0 a4 F* Y: r( {frequency to achieve high-efficiency regulation over a
2 [; [. W1 `1 G2 c+ H/ ewide range of load currents. SKIP mode uses a short
$ J' X% |& U% `- O5 r! {- g* n"burst" cycle to switch the inductor current through
, |3 V& F; @7 y5 ?9 ]the internal power MOSFET, followed by a sleep
) A. k. `9 S" D# L1 `7 Wcycle in which the power switch is turned off and the
load current is provided by the output capacitor. At
light loads, burst cycles are a small fraction of the
5 G5 J8 v. h# c! wtotal cycle time, minimizing average supply current
, L, ^* D/ S% r4 L" E2 zand greatly improving efficiency at light loads.
ZCC5160 has a wide input voltage range of 4V-60V,
9 Q1 K' ^* _0 `8 I1 Pthus minimizing the need for external surge
/ h* c3 d3 G2 R; I0 Q- Bsuppression components. Making it the best choice
( B0 N; N; P) X2 E  Qfor wide input power range industrial and high cell
; F. p4 k5 P6 {# L+ W/ icount battery pack applications. ZCC5160 is ideal for
2 o3 ?# j6 M0 ^use in the 48V automotive power bus range.
/ d1 n" t& [0 OZCC5160 features low-value 100mΩ high-side and
80mΩ low-side MOSFET that provide at least 3A
; G' z/ Y3 D/ P4 q; J; Toutput current capability with excellent load and line
transient response.
Additional features include: soft-start, thermal
shutdown, UVLO undervoltage lockout, gate driver
- x& ]! D6 J! m7 z' T1 C7 Wundervoltage lockout, maximum duty cycle limit timer,
+ n: ?& C0 ^5 P; q" S% pand current limit shutdown timer. It also integrates
output short-circuit protection, providing HICCUP
4 P! K( U4 r4 o3 U1 ?5 Bmode when the FB voltage is low to avoid
overheating during short-circuit.

Crash

串联线性稳压电路主要思路来自于基本线性调整模型。在输入直流电压和负载之间串入一个三极管，其作用就是当输出阻抗发生变化引起输出电压同步变化时，通过某种反馈形式使三极管的发射极也随之变化，从而调整输出电压值，以保持输出电压基本稳定。