A3933 データシートの表示（PDF） - Allegro MicroSystems
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A3933 Datasheet PDF : 12 Pages
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3933
THREE-PHASE POWER
MOSFET CONTROLLER
Functional Block Diagram
LCAP
+V
VBB
REGULATOR
H1
H2
H3
DIR
RESET
MODE
PWM
RC
RT CT
TO
VCCOUT
REF
SENSE
BRAKE
BRKSEL
BRKCAP
CONTROL
LOGIC
RC BLANKING
(FIXED OFF TIME)
+
–
BRAKE
UNDER-
VOLTAGE
DETECT
CONNECT FOR
12-V OPERATION
VCCOUT
BOOTSTRAP
MONITOR
GATE-SOURCE
MONITOR
LOW-SIDE
SYNCHRONOUS
RECTIFICATION
BOOTSTRAP
CHARGE
TURN-ON
DELAY
HIGH-SIDE
DRIVER
CX
Cboot
GHX
1 OF 3 HIGH-SIDE DRIVERS
DEAD-TIME
ADJUST
SX
DEAD
TO
1 OF 3
MOTOR
PHASES
TO
LCAP
TURN-ON
DELAY
1 OF 3 LOW-SIDE DRIVERS
BOOTSTRAP LOW
VGS LOW
INVALID HALL
UNDERVOLTAGE
LOW-SIDE
DRIVER
GLX
PGND RS
FAULT
AGND
TO
SENSE
Dwg. FP-045
Dwg. OA-007-32
RECOMMENDED OPERATING CONDITIONS
Supply Voltage, VBB ...................................... 15 V to 28 V
or, if VBB = VCCOUT ................................... 12 V ±10%
Logic Input Voltage Range, VIN .............. -0.3 V to +4.8 V
Sense Voltage Range, VSENSE ........................ -1 V to +1 V
RC Resistance .......................................... 10 kΩ to 100 kΩ
PWM Frequency, fPWM ....................... 20 kHz to 100 kHz
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1999, Allegro MicroSystems, Inc.
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