3-Phase Power MOSFET Controller for Automotive Applications
A3935
ELECTRICAL CHARACTERISTICS (continued) at TJ = –40°C to 150°C, VBAT = 7 to 16 V, VDD = 4.75 to 5.25 V,
ENABLE = 22.5 kHz, 50% duty cycle, two phases active;unless otherwise noted
Characteristics
Symbol
Conditions
Min. Typ1. Max. Units
Gate Drives, GLx (internal sink or lower switch stages)6
VDSL = 10 V, TJ = 25°C
–
850
–
–
mA
mA
Ω
Sink Current (pulsed)
Sink On Resistance
IxL
VDSL = 10 V, TJ = 135°C
IxL = 150 mA, TJ = 25°C
IxL = 150 mA, TJ = 135°C
550
1.8
3.0
–
–
6.0
7.5
rDSL(on)
–
Ω
Gate Drives, GHx, GLx (General)5,6
Propagation Delay, Logic only
Output Skew Time
tpd
Logic input to unloaded GHx, GLx
–
–
–
–
–
150
50
ns
ns
ns
tsk(o)
tdead
Grouped by edge, phase–to–phase
Between GHx, GLx transitions of same phase
Dead Time (shoot–through prevention)
Sense Amplifier
75
180
Input Bias Current2
Input Offset Current2
Ibias
IIO
CSP = CSN = 0 V
–180
–
–
–
–360
±35
–
μA
μA
CSP = CSN = 0 V
CSP with respect to GND
CSN with respect to GND
VID = CSP – CSN, –1.3V < CSP,N < 4V
CSP = CSN = 0 V
–
80
4.0
–
kΩ
Input Resistance
ri
–
–
kΩ
Diff. Input Operating Voltage
Output Offset Voltage
VID
VOO
ΔVOO
VIC
–
±200
450
–
mV
mV
μV/°C
V
77
–
250
100
–
Output Offset Voltage Drift
Input Common Mode Operating Range
Voltage Gain
CSP = CSN = 0 V
CSP = CSN
–1.5
4.0
AV
VID = 40 to 200 mV
18.6 19.2 19.8
V/V
mV
dB
Low Output Voltage Error
DC Common Mode Attenuation
Output Resistance
EV
VID = 0 to 40 mV, VO = (19.2 × VID) + VO + Ev
CSP = CSN = 200 mV
VCSOUT = 2.0 V
–
28
–
–
–
±25
–
AVC
rO
8.0
–
Ω
VDD
0.25
–
–
Output Dynamic Range
VCSOUT ICSOUT = –100 μA at top rail, 100 μA at bottom rail
0.075
–
V
Output Current, Sink
Output Current, Source2
Isink
VCSOUT = 2.5 V
VCSOUT = 2.5 V
20
–1.0
20
45
–
–
–
mA
mA
dB
Isource
–
VDD Supply Ripple Rejection
VREG Supply Ripple Rejection
Small Signal 3 dB Bandwidth
AC Common Mode Attenuation
Output Slew Rate (positive or negative)
Fault Logic
PSRRVDD CSP = CSN = GND, frequency = 0 to 1 MHz
PSRRVREG CSP = CSN = GND, frequency = 0 to 300 kHz
BWf3db 10 mV input
–
–
–
–
dB
1.6
–
–
MHz
dB
AVC(ac) Vcm = 250 mV(pp), frequency = 0 to 800 kHz
26
10
–
SR
200 mV step input, measured at 10/90% points
–
–
V/μs
VDD Undervoltage
VDD(uv) Decreasing VDD
∆VDD(uv) VDD(recovery) – VDD(uv)
VSET(ov)
3.8
100
0
–
–
–
–
–
–
4.3
300
VDD
2.5
1.0
40
V
mV
V
VDD Undervoltage Hysteresis
OVSET Operating Voltage Range
OVSET Calibrated Voltage Range
OVSET Input Current Range2
VSET(ov)cal
0
V
ISET(ov)
–1.0
19.4
μA
V
0 V < VSET(ov) < 2.5 V
VBAT(ov)
VBAT Overvoltage Range
Increasing VBAT, VSET(ov) = 0 V
19.4 22.4 25.4
V
VBAT Overvoltage Hysteresis
∆VBAT(ov) Percent of VBAT(ov) value set by VSET(ov)
9.0
–
15
%
Continued on the next page…
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
5
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com