A4940 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A4940' PDF : 14 Pages View PDF
A4940
Automotive Full Bridge MOSFET Driver
ELECTRICAL CHARACTERISTICS Valid at TJ = –40°C to 150°C, VBB = 7 to 50 V, VDD = 3 to 5.5 V; unless otherwise noted
Characteristics
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Supply and Reference
VBB Functional Operating Range1
VDD Range
VBB Quiescent Current
VDD Quiescent Current
VREG Output Voltage
VBB
5.5
–
50
V
VDD
3
–
5.5
V
IBBQ RESET = high, GHx, GLx = low, VBB = 12 V
–
1
2
mA
IBBS
RESET= low, VBB = 12 V
–
–
10
μA
IVDDQ RESET = high, outputs low
–
2
4
mA
IVDDS RESET = low
–
–
10
μA
VBB > 9 V, IREG = 0 to 8 mA
12.65
13
13.9
V
VREG
7.5 V < VBB ≤ 9 V, IREG = 0 to 6 mA
6 V < VBB ≤ 7.5 V, IREG = 0 to 5 mA
12.65
13
13.9
V
2 × VBB
– 2.5
–
–
V
Bootstrap Diode Forward Voltage
Bootstrap Diode Resistance
Bootstrap Diode Current Limit
Gate Output Drive
5.5 V < VBB ≤ 6 V, IREG < 4 mA
8.5
9.5
–
V
VfBOOT
ID = 10 mA
ID = 100 mA
0.4
0.7
1.0
V
1.5
2.2
2.8
V
rD
rD(100mA) =
(VfBOOT(150mA) – VfBOOT(50mA)) / 100 mA
6
10
20
Ω
IDBOOT
250
500
750
mA
Turn-On Time
tr
CLOAD = 1 nF, 20% to 80% points
–
35
–
ns
Turn-Off Time
tf
CLOAD = 1 nF, 80% to 20% points
–
20
–
ns
Pull-up On Resistance
RDS(on)UP
TJ = 25°C, IGHX = –150 mA
TJ = 150°C, IGHX = –150 mA
8
11
16
Ω
13
18.5
24
Ω
Pull-down On Resistance
RDS(on)DN
TJ = 25°C, IGLX = –150 mA
TJ = 150°C, IGLX = –150 mA
3
6
8
Ω
6
9
12
Ω
GHx Output Voltage
VGH Bootstrap capacitor fully charged
VCX – 0.2
–
–
V
GLx Output Voltage
VGL
VREG – 0.2
–
–
V
Turn-Off Propagation Delay2
tp(off) Input change to unloaded gate output change
60
90
150
ns
Turn-On Propagation Delay2
tp(on) Input change to unloaded gate output change
60
90
150
ns
Propagation Delay Matching - Phase to
Phase
ΔtPP Same phase change
–
10
–
ns
Propagation Delay Matching - On to Off
ΔtOO
Single phase
RDEAD tied to GND
–
10
–
ns
–
0
–
ns
Dead Time2
tDEAD
RDEAD = 3 kΩ
RDEAD = 30 kΩ
RDEAD = 240 kΩ
RDEAD tied to VDD
–
180
–
ns
815
960
1150
ns
–
3.5
–
μs
–
6
–
μs
Continued on the next page…
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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