A3932SEQ-TTR Allegro MicroSystems, Inc., A3932SEQ-TTR Datasheet - Page 2

• Manufacturer Part Number: A3932SEQ-TTR
• Description: IC MOSFET DRVR 5V DUAL HI/LO SIDE 3-PHASE BRDG 32PLCC T/R
• Manufacturer: Allegro MicroSystems, Inc.

PWM input can be used to provide speed/torque control,
allowing the internal current control circuit to set the maxi-
mum current limit.
feature will short out the current path through the power
MOSFETs’ reverse body diodes during the PWM off-cycle
current decay. This can minimize power dissipation in the
power MOSFETs, eliminate the need for external power
clamp diodes, and potentially allow a more eco nom i cal
choice for the MOSFET drivers.
2
3932
THREE-PHASE POWER
MOSFET CONTROLLER
Optional synchronous rectifi cation is included. This
Functional Block Diagram
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
Copyright © 2002, 2003 Allegro MicroSystems, Inc.
NOTE — For 12 V applications, VBB is shorted to VREG.
The V
ex ceed ed.
sors confi gured for 120 degree spacing. Power MOSFET
protection features include bootstrap capacitor charging
current monitor, undervoltage monitor, motor-lead short-
to-ground, and thermal shutdown.
temperature range of -20°C to +85°C. The ‘–EQ–’ suffi x
in di cates a 32-lead rect an gu lar plastic chip carrier (PLCC).
The initial ‘–TR–’ variant suffi x indicates tape and reel
packing. The ‘–T’ fi nal variant suffi x indicates lead (Pb)
free composition, with 100% matte tin leadframe plating.
The A3932 includes the commutation logic for Hall sen-
The ‘–S–’ part-number suffi x in di cates an operating
REG
absolute maximum rating (15 V) must not be