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Block diagram – Rainbow Electronics MAX15058 User Manual

Page 10

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High-Efficiency, 3A, Current-Mode

Synchronous, Step-Down Switching Regulator

MAX15058

10 _____________________________________________________________________________________

BIAS

GENERATOR

EN LOGIC, IN UVLO

THERMAL SHDN

SKIP-MODE

LOGIC

CONTROL

LOGIC

SKPM

0.58V

CK

GND

PGOOD

EN

SS/REFIN

FB

RAMP

CK

COMP

SKIP

LX

IN

SHDN

VOLTAGE

REFERENCE

OSCILLATOR

RAMP GEN

SKPM

LX

SKPM

LX

IN

IN

IN

SINK
SOURCE

ZX

LOW-SIDE SOURCE-SINK

CURRENT LIMIT AND ZERO-

CROSSING COMPARATOR

0.6V

HIGH-SIDE

CURRENT LIMIT

STRONG PREBIASED

FORCED START

SS/REFIN BUFFER

ERROR AMPLIFIER

10µA

PWM

COMPARATOR

POWER-GOOD
COMPARATOR

CURRENT-SENSE

AMPLIFIER

0.555V RISING,
0.527V FALLING

MAX15058

C

Block Diagram