ZCC5160 同步降压 60V 3A

四维电子

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Features
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20-μA Quiescent current in regulation
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5 ^9 s* y" W8 {8 p) \Input voltage range: 4V-60V
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4 D3 ~8 l7 P/ LOutput voltage range: 1V-VIN
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) g/ R; r5 B/ m3 F) ~Integrated upper and lower power MOSFET
) d& v7 E& c* h9 K" {$ rmaximum current: 5A
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Adjustable frequency range: 200KHz~2MHz
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Automatic switching of CCM/DCM/PFM mode
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0 Y4 R3 C9 s. \0 N$ ~Adjustable soft-start time and Output voltage
! R+ G! @2 m' o9 k" ^) y% Mtracking capability
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4 }7 b* W& ^+ F# O' y# VAutomatically switched bypass linear power
' c: F2 N- e. F% d! h4 isupply
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+ F0 X* V0 f9 p9 a# x+ YProvides ultra-low input and output dropout
voltage close to 100% duty cycle
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Internal Compensation
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: R1 S7 ~% `: W5 S! uPower-good flag
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Dynamic Frequency Stretch Technology
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* X* N* i6 o7 X9 @- RSupport large capacitive load start-up
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Protection function: UVLO/OCP/SCP/OTP/OVP
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! v7 B$ v: i4 q$ ?Operating junction temperature range: -40℃ to
0 o: ]4 e5 ^. G/ i+125℃
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All pins have ±2000V (HBM) ESD protection
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0 `" {" V! T& b% ~" ?: mETSSOP 16-Pin Exposed Pad Package
Applications
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Industrial power supply
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" U+ x1 G, `% K6 ZWide voltage input range power supply
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Low ripple low noise power supply
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$ [1 _& S% ?5 C9 `! v8 V" C5 XAutomotive electronic power supply
Figure. 1 Typical Application Circuit
6 r9 S2 P/ n- z1 z3 y. q) tDescription
ZCC5160 is a step-down DC/DC regulator with an
5 C8 b  I( t! D8 B5 o% v6 v9 W% ~internal switch, featuring SKIP control mode, which
combines low quiescent current with high switching
  S  C  e9 W0 G( |frequency to achieve high-efficiency regulation over a
8 V; w0 _8 T! s0 g4 Q/ ?* R0 iwide range of load currents. SKIP mode uses a short
"burst" cycle to switch the inductor current through
$ g4 F* i* _9 D: r0 ~3 B' Y* Bthe internal power MOSFET, followed by a sleep
; P: C! I& e( M- z1 jcycle in which the power switch is turned off and the
load current is provided by the output capacitor. At
5 I1 |1 c9 h4 jlight loads, burst cycles are a small fraction of the
total cycle time, minimizing average supply current
2 d; W: ^& |$ H  X% eand greatly improving efficiency at light loads.
+ g' }6 j$ V3 t5 M4 g2 ^, d& I5 aZCC5160 has a wide input voltage range of 4V-60V,
thus minimizing the need for external surge
* r7 h) F5 M8 o" O& n& m5 bsuppression components. Making it the best choice
$ S& @" Z: c& y; [3 qfor wide input power range industrial and high cell
% r0 P$ h' d2 u. R5 T* mcount battery pack applications. ZCC5160 is ideal for
7 G1 |5 z+ i) S5 c6 b" quse in the 48V automotive power bus range.
ZCC5160 features low-value 100mΩ high-side and
) X& L9 o/ T! j5 S6 H4 G80mΩ low-side MOSFET that provide at least 3A
1 d. h; [% {7 C7 Z4 houtput current capability with excellent load and line
transient response.
8 ^/ e! G& T2 eAdditional features include: soft-start, thermal
. m9 R* F. s# C, n( `shutdown, UVLO undervoltage lockout, gate driver
undervoltage lockout, maximum duty cycle limit timer,
and current limit shutdown timer. It also integrates
7 }! u- Y$ d7 W0 j3 a) ooutput short-circuit protection, providing HICCUP
mode when the FB voltage is low to avoid
overheating during short-circuit.
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Sleep_xz

■ZCC5160 是一款带内部开关的降压DC/DC稳压器，具备SKIP控制模式，将低静态电流与高开关频率相结合，可在广泛的负载电流范围内实现高效率的稳压。SKIP模式使用短的“突发”周期通过内部功率MOSFET切换电感电流，然后是休眠周期，在休眠周期中，电源开关关闭，负载电流由输出电容器提供。在轻负载时，突发周期占总周期时间的一小部分，使平均电源电流最小化，大大提高了轻负载时的效率。