a4940 Allegro MicroSystems, Inc., a4940 Datasheet - Page 4

• Manufacturer Part Number: a4940
• Description: Automotive Full Bridge Mosfet Driver
• Manufacturer: Allegro MicroSystems, Inc.

A4940
Continued on the next page…
ELECTRICAL CHARACTERISTICS
Supply and Reference
V
V
V
V
VREG Output Voltage
Bootstrap Diode Forward Voltage
Bootstrap Diode Resistance
Bootstrap Diode Current Limit
Gate Output Drive
Turn-On Time
Turn-Off Time
Pull-up On Resistance
Pull-down On Resistance
GHx Output Voltage
GLx Output Voltage
Turn-Off Propagation Delay
Turn-On Propagation Delay
Propagation Delay Matching - Phase to
Phase
Propagation Delay Matching - On to Off
Dead Time
BB
DD
BB
DD
Functional Operating Range
Quiescent Current
Range
Quiescent Current
2
Characteristics
2
2
1
R
R
Symbol
V
I
DS(on)DN
DS(on)UP
I
Valid at T
I
V
DBOOT
t
t
t
Δt
I
VDDQ
Δt
V
V
I
VDDS
V
DEAD
fBOOT
V
p(off)
p(on)
BBQ
BBS
REG
r
t
t
GH
BB
DD
GL
D
OO
PP
r
f
RESET = high, GHx, GLx = low, V
RESET= low, V
RESET = high, outputs low
RESET = low
V
7.5 V < V
6 V < V
5.5 V < V
I
I
r
C
C
T
T
T
T
Bootstrap capacitor fully charged
Input change to unloaded gate output change
Input change to unloaded gate output change
Same phase change
Single phase
RDEAD tied to GND
R
R
R
RDEAD tied to VDD
J
D
D
D(100mA)
J
J
J
J
BB
Automotive Full Bridge MOSFET Driver
LOAD
LOAD
DEAD
DEAD
DEAD
= –40°C to 150°C, V
= 10 mA
= 100 mA
= 25°C, I
= 150°C, I
= 25°C, I
= 150°C, I
> 9 V, I
= 1 nF, 20% to 80% points
= 1 nF, 80% to 20% points
= 3 kΩ
= 30 kΩ
= 240 kΩ
BB
=
BB
BB
(V
≤ 7.5 V, I
REG
fBOOT(150mA)
GHX
GLX
≤ 9 V, I
≤ 6 V, I
GHX
GLX
BB
= –150 mA
= 0 to 8 mA
Test Conditions
= –150 mA
= –150 mA
= –150 mA
= 12 V
REG
REG
REG
= 0 to 6 mA
= 0 to 5 mA
< 4 mA
– V
BB
fBOOT(50mA)
= 7 to 50 V, V
BB
= 12 V
) / 100 mA
DD
= 3 to 5.5 V; unless otherwise noted
V
V
2 × V
REG
CX
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
12.65
12.65
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
– 2.5
Min.
250
815
5.5
8.5
0.4
1.5
13
60
60
3
–
–
–
–
6
–
–
8
3
6
–
–
–
–
–
–
– 0.2
– 0.2
BB
Typ.
18.5
500
180
960
9.5
0.7
2.2
3.5
13
13
10
35
20
90
90
10
10
11
–
–
1
–
2
–
–
6
9
–
–
0
6
Max.
1150
13.9
13.9
750
150
150
5.5
1.0
2.8
50
10
10
20
16
24
12
2
4
–
–
–
–
8
–
–
–
–
–
–
–
–
Unit
mA
mA
mA
μA
μA
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
μs
Ω
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
V
4