A3924 Datasheet, PDF (43/55 Pages) Allegro MicroSystems – Automotive, Full-Bridge MOSFET Driver

A3924
Automotive, Full-Bridge MOSFET Driver
Serial Register Reference*
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
YSU YTW YOT YRO YRU YBU YLO YSO Y3U Y3O
6: Verify Command 0
0
1
1
0
WR
P
0
0
0
0
0
0
0
0
0
0
OP YPH YPL YDO YOC
YGU YOL YOU YOD
7: Verify Command 1
0
1
1
1
WR
P
0
0
0
0
0
0
0
0
0
0
* Power-on-reset value shown below each input register bit.
Verify Command 0
Verify Command 1
YSU – VBB SUPPLY UNDERVOLTAGE
YTW – TEMPERATURE WARNING
YOT – OVERTEMPERATURE
YRO – VREG OVERVOLTAGE
YRU – VREG UNDERVOLTAGE
YBU – BOOTSTRAP UNDERVOLTAGE
YLO – LOGIC OVERVOLTAGE
YSO – VBB SUPPLY OVERVOLTAGE
Y3U – V3 UNDERVOLTAGE
Y3O – V3 OVERVOLTAGE
Yxx
0 Inactive
1 Active
Verification
P – PARITY BIT
Ensures an odd number of 1s in any serial transfer.
Default
D
OP
OP
0
1
Off-State Open-Load Phase Select
Phase A
Phase B
Default
D
YPH – PHASE CONNECT HIGH-SIDE
YPL – PHASE CONNECT LOW-SIDE
YDO – VDS OVERVOLTAGE
YOC – OVERCURRENT
YGU – VGS UNDERVOLTAGE
YOL – ON-STATE OPEN-LOAD
YOU – OFF-STATE OPEN-LOAD CURRENT SOURCE
YOD – OFF-STATE OPEN-LOAD CURRENT SINK
Yxx
Verification
0 Inactive
1 Active and Initiate
Default
D
P – PARITY BIT
Ensures an odd number of 1s in any serial transfer.
Allegro MicroSystems, LLC
43
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com