A3935 Allegro MicroSystems, Inc., A3935 Datasheet - Page 8

• Manufacturer Part Number: A3935
• Description: Three-Phase Power MOSFET Controller
• Manufacturer: Allegro MicroSystems, Inc.

8
3935
THREE-PHASE POWER
MOSFET CONTROLLER
Terminal Name
BOOSTD
VBOOST
BOOSTS
ENABLE
VDRAIN
CSOUT
VDSTH
OVSET
OVFLT
UVFLT
FAULT
VREG
VBAT
GHC
GHB
GHA
VDD
CSN
GND
CSP
GLC
GLB
GLA
ALO
BLO
CLO
LSS
CHI
AHI
BHI
CC
NC
SC
SB
CB
SA
CA
Function
DC input, drain-to-source monitor threshold voltage
Gate-drive source return, low-side
Gate-drive C output, low-side
Load phase C input
Gate-drive C output, high-side
Bootstrap capacitor C
Gate-drive B output, low-side
Load phase B input
Gate-drive B output, high-side
Bootstrap capacitor B
Gate-drive A output, low-side
Load phase A input
Gate-drive A output, high-side
Bootstrap capacitor A
Gate drive supply, positive
Boost supply output
Boost switch, source
Boost switch, drain
Battery supply, positive
VBAT undervoltage fault output
VBAT overvoltage fault output
Active-low fault output, primary
Gate control input A, low-side
Gate control input A, high-side
Gate control input B, high-side
Gate control input B, low-side
Gate control input C, low-side
Gate control input C, high-side
Gate output enable
DC input, overvoltage threshold setting for VBAT
Not connected, no external connection allowed
Current-sense amplifier output
Logic supply, nominally +5 V
Current-sense input, negative-side
Ground, dc supply returns, negative, and (for ED package)
Current-sense input, positive-side
Kelvin connection to MOSFET high-side drains
heat sink tab
Terminal Functions
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
22, 23, 34, 35
A3935KED
1, 2, 11, 12,
(PLCC)
31
32
33
36
37
38
39
40
41
42
43
44
10
13
14
15
16
17
18
19
20
21
24
25
26
27
28
29
30
3
4
5
6
7
8
9
25,35,36,37,47,48
1,2,13,14,23,24,
A3935KJP
(QLFP)
19
20
21
22
26
27
28
29
30
31
32
33
34
38
39
40
41
42
43
44
46
10
11
12
15
16
17
18
45
3
4
5
6
7
8
9
A3935KLQ
(SOIC)
10
11
13
14
15
17
22
23
25
27
28
30
31
32
34
35
36
21
12
16
18
19
20
24
26
29
33
1
2
3
4
5
6
7
8
9
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