Rainbow Electronics MAX15046B - Manual (Page 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