Philips VE8 - Page 139

Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 140 Q529.1A LA9.
9.8.8 Diagram V2, UBA2071 (IC 7201)
Figure 9-17 Internal block diagram and pin configuration
ARCING
DETECTION
DOUBLE
SIDE
RECTIFIER
HARD-
SWITCHING
DETECTION
MASTER / SLAVE
COMMUNICATION
NON-OVERLAP
TIMING
PWM GENERATOR
LAMP
CURRENT
SENSING
OVER-
CURRENT
DETECTION
OVER-
VOLTAGE
SENSING
TRACK
AND
SWEEP
INTERNAL
SUPPLY
AND
REFERENCE
CIRCUITS
LEVEL-
SHIFTER
TIMER
HF
OSCILLATOR
CONTROL
IREF
VDD
EN
CF
CSWP
CVFB
VFB
IFB
CIFB PWMA PWMD CPWM
FS
GH
SH
GL
PGND
COMM
VDD
bootstrap diode
VDD
low-side
driver
high-side
driver
UBA2071
SGND
CT
NONFAULT
Block Diagram
Pin Configuration
UBA2071
HGBFI
SFBFIC
HSBFV
.c.nBFVC
.c.nPWSC
.c.nTC
LGFC
DNGPFERI
DDVMWPC
NEDNGS
AMWPMMOC
DMWPTLUAFNON
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5
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7
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9
10
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13
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15
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