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LM5145 Datasheet(PDF) 15 Page - Texas Instruments

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Part # LM5145
Description  LM5148 80-V, Synchronous, Buck DC/DC Controller with Ultra-Low IQ and Dual Random Spread Spectrum
PDF  70 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM5145 Datasheet(HTML) 15 Page - Texas Instruments

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8.2 Functional Block Diagram
+
–
800 mV
RT amp
BIAS
PLL and
OSCILLATORS
VDDA
CONTROL
HICCUP
FAULT TIMER
512 CYCLES
+
–
+
–
BOOT
UVLO
PG
DELAY
25 ms
FB
DECODER
/MUX
150 mV
Q
Q
R
S
CONFG
DECODER
+
–
CBOOT
CNFG
PFM/SYNC
RT
HO
SW
LO
PGND
VCC
PG
EXTCOMP
FB
VOUT
ISNS+
EN
AGND
VDDA
VCC
VCCX
VIN
DEM/FPWM
+
VCC
SOFT-START
DUAL RANDOM
SPREAD SPECTURM
(DRSS)
PG/SYNCOUT
PGO
PGUV
0.735 V
DRIVER
DRIVER
+
+
–
DRSS
ENABLE
SECONDARY
SECONDARY
GAIN = 10
VOUT
VREF 0.8 V
ILIM
HICCUP
3.3 V
5 V
12 V
SYNCOUT
LEVEL
SHIFT
ADAPTIVE
DEADTIME
SYNCOUT
CLK
INTERLEAVED
SECONDARY
INTERLEAVE
COMP/ENABLE
EXTERNAL EA
gm 1200 µS
VREF
INTERNAL EA
gm 30 µs
0.880 V
STANDBY
SS
DEM/FPWM
HICCUP
PWM
CLK
60 mV
CURRENT
LIMIT
ILIM
SLOPE
COMP
RAMP
+
+
–
–
+
–
+
–
www.ti.com
LM5148
SNVSC01 – FEBRUARY 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: LM5148



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