a4935 Allegro MicroSystems, Inc., a4935 Datasheet - Page 23

• Manufacturer Part Number: a4935
• Description: Automotive 3-phase Mosfet Driver
• Manufacturer: Allegro MicroSystems, Inc.

A4935
Terminal List
1, 24, 25, 35,
36, 37, 42
Pin
10
12
13
14
15
16
17
18
19
20
21
11
2
3
4
5
6
7
8
9
Pin Name
COAST
CSOUT
RESET
VDSTH
PWMH
PWML
CCEN
CLO
VDD
CSN
ESF
ALO
BLO
CSP
FF2
FF1
LSS
AHI
BHI
CHI
NC
No internal connection; connect to AGND
Standby mode control
Enable Stop on Fault input
Fault Flag 2 and serial clock input
Fault Flag 1 and serial data output
Control input phase A low-side
Control input phase A high-side
Control input phase B high-side
Control input phase B low-side
Control input phase C low-side
Control input phase C high-side
Low-side PWM input
Cross-conduction enable
High-side PWM input
Coast input
Current sense output
Logic supply
Current sense negative input
Current sense positive input
Fault threshold voltage
Low-side source
Pin Description
RESET
PWML
CLO
ESF
ALO
BLO
FF2
FF1
AHI
BHI
CHI
NC
10
11
12
1
2
3
4
5
6
7
8
9
Pin-out Diagram
Automotive 3-Phase MOSFET Driver
PAD
Pin
22
23
26
27
28
29
30
31
32
33
34
38
39
40
41
43
44
45
46
47
48
–
36
35
34
33
32
31
30
29
28
27
26
25
Pin Name
VDRAIN
RDEAD
AGND
VREG
PGND
AGND
GHC
GHB
GLC
GHA
GLB
GLA
CP2
CP1
VBB
PAD
NC
NC
SA
GLA
CB
GHB
SB
GLB
CC
GHC
SC
NC
CC
SC
SB
CB
SA
CA
Low-side gate drive phase C
Analog ground
Motor connection phase C
High-side gate drive phase C
Bootstrap capacitor phase C
Low-side gate drive phase B
Motor connection phase B
High-side gate drive phase B
Bootstrap capacitor phase B
Low-side gate drive phase A
Motor connection phase A
High-side gate drive phase A
Bootstrap capacitor phase A
Gate drive supply output
High-side drain voltage sense
Pump capacitor
Pump capacitor
Power ground
Main power supply
Analog ground
Dead time setting
Exposed thermal pad; connect to AGND
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Pin Description
23