Rainbow-electronics MAX15046B Manual de usuario descargar pdf (Pagina 9)

40V, High-Performance, Synchronous

Buck Controller

MAX15046

_______________________________________________________________________________________ 9

Functional Diagram

DC-DC

OSCILLATOR

AND

ENABLE

LOGIC

EN_INT

VREF

VREF

V_BGAP

BGAP_OK

ENABLE

COMPARATOR

BGAP_OK

SHUTDOWN

VL_OK

PWM

COMPARATOR

PWM

DH

BST

LX

CSP

RAMP

HICCUP

VREF

CK

CK

ENABLE

OSCILLATOR

OSC ENABLE

RAMP GENERATOR

BANDGAP

OK

GENERATOR

V

CC

RT

EN

LIM

V

CC

UVLO

VIN_OK

I

BIAS

VIN_OK

V

REF

= 0.6V

V

BGAP

= 1.24V

IN

IN

UVLO

VIN_OK

V_BGAP

VDRV_OK

DRV

UVLO

BGAP_OK

BGAP_OK

V_DRV

INTERNAL

VOLTAGE

REGULATOR

VIN_OK

THERMAL

SHUTDOWN

AND ILIM

CURRENT

GENERATOR

MAIN

BIAS

CURRENT

GENERATOR

BANDGAP

REFERENCE

FB

DAC_VREF

HICCUP TIMEOUT

DH_DL_ENABLE

VREF

CK

SOFT-START/STOP

AND

HICCUP

LOGIC

G

M

COMP

CK

DH_DL_ENABLE

HICCUP TIMEOUT

PWM

CONTROL

LOGIC

LIM/10

LIM/20

SINK

CURRENT-LIMIT

COMPARATOR

PGOOD

COMPARATOR

VALLEY

CURRENT-LIMIT

COMPARATOR

HIGH-

SIDE

DRIVER

HICCUP

MAX15046

DL

DRV

PGND

FB

PGOOD

GND

LOW-

SIDE

DRIVER

VREF

ENABLE

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