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本帖最后由 ikkyu 于 2020-6-2 15:53 编辑
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DESCRIPTION
( R" m* h1 Y3 @ KThe MP1584 is a high frequency step-down 4 v" S: n0 g6 w( l6 o" W+ Z6 L
switching regulator with an integrated internal
7 V( P; A# o- h! }high-side high voltage power MOSFET. It , f; L* k$ E3 E, h, [
provides 3A output with current mode control for
( M4 _" A6 Z+ g* Zfast loop response and easy compensation. . K) F. S# n7 A
The wide 4.5V to 28V input range accommodates
: n7 r7 e5 Z7 g9 l3 \4 o D4 ga variety of step-down applications, including : B/ E) i- G" P1 |( o& {
those in an automotive input environment. A ( X: U, {+ f) F- a3 p6 r
100μA operational quiescent current allows use in $ a/ V+ x6 B' J! l
battery-powered applications.
2 U9 H6 [+ t+ ]High power conversion ef
# k. U, m& P. I, f: y4 l) fficiency over a wide
. q6 g, J" a6 K/ V- ?load range is achieved by scaling down the
# H r J9 K% {; A( \switching frequency at light load condition to
. }7 ^- I; W: y* ~( f5 dreduce the switching and gate driving losses.
) v6 v% |3 n- mThe frequency foldback helps prevent inductor ( _$ c! H- A! Q8 ~6 o9 G4 ?- b
current runaway during startup and thermal
, Q3 o/ `- d, o7 j% R! ~) yshutdown provides reliable, fault tolerant 1 J3 K3 V6 v8 x& g! ]7 A3 A
operation.
9 _- @# `8 c+ ^; IBy switching at 1.5MHz, the MP1584 is able to / ^" k$ `# X* e" r
prevent EMI (Electromagnetic InteRFerence) noise . G; V5 L) Q ?, r- B! S e5 n
problems, such as those found in AM radio and ) Q4 Q) W$ a- W" w( m9 j
ADSL applications.
# J% |. V4 ^1 Q: g* vThe MP1584 is available in a thermally enhanced # H- {! @1 d9 f2 P- T$ R9 j7 B- K) Y
SOIC8E package.
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( \- P. B' B( U" KFEATURES8 N1 N2 }7 j4 v% {
5 T1 G7 y' ?4 O0 l( }, `4 n. X
Wide 4.5V to 28V Operating Input Range
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! a) K& R8 H' t) G7 |) L0 R! w Programmable Switching Frequency from & j" c4 k9 V7 ?4 {% k! N1 C
100kHz to 1.5MHz & Y [, I: F* ]4 s" R0 U' M9 L# l
0 ~" A; g+ R' k High-Efficiency Pulse Skipping Mode for
0 F9 b$ S9 B0 }6 O5 }Light Load
# f0 x: ?* S! A# d, x
/ p) y" z+ Q5 o/ \ t$ C6 x& i5 n1 R Ceramic Capacitor Stable
5 X; D' t7 S; A A% r/ o* z1 h% u0 U) S* B5 a
Internal Soft-Start 6 d( H$ \" n: e/ S- l2 [
5 D3 T0 ?7 Z' A, v. f) t
Internally Set Current Limit without a % W% e1 D" G) C r: e; l
Current Sensing Resistor
, s; F( G% B" q3 a$ _9 P" Y
1 U8 e4 M, N' z Available in SOIC8E Package.
! h8 T1 @8 V) t8 EAPPLICATIONS * t% R# Q5 V' @
8 X" i; A4 k6 I
High Voltage Power Conversion 8 u1 S8 Z V' c% Z1 L" ^- a0 o: n
$ Q# n1 O4 }- v" _% C5 ] Automotive Systems
( s3 q$ Z! \3 m9 J, i9 J. O/ r f1 ]; v+ l( z, b9 U& W
Industrial Power Systems ; c$ \8 Z4 |% Y$ H& c& V P
/ O! y& A- u; v" g, z
Distributed Power Systems
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. z% S* J9 y) l5 W: k2 ^' L9 _4 o5 eBattery Powered Systems ( Y; W0 V6 i, Q) K: i
Tel：15820760660 熊R& [" V. E) y n* Z& M. B
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发表于 2020-6-2 15:51
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