3940
FULL-BRIDGE POWER
MOSFET CONTROLLER
ELECTRICAL CHARACTERISTICS: unless otherwise noted at TA = -40°C to +135°C, TJ = -40°C to +150°C,
VIN ≤ VBB = 7 V to 40 V, Cp = 0.47 µF, Cr = 1 µF, CREG5 = 0.1 µF, CREG13 = 10 µF, CBOOT = 0.1 µF, PWM = 22.5 kHz
square wave.
Limits
Characteristics
Symbol
Conditions
Min
Typ
Max
Units
Bootstrap Circuit
Diode Forward Current Limit
Diode Forward Drop
Diode Resistance
ICX
VF
RF
Icx
3 V < [(VREG13 = 13.5 V) - VCX] < 12 V
IF = 10 mA
RF(100) = [VF(150) - VF(50)]/100
VCX - VSX = 8 V, VBB = 40 V, GHx = 1(no load)
140
0.8
1.5
40
–
–
–
–
1000
2.0
6.5
–
mA
V
Ω
Top-off CP Source Current at Cx
µA
Fault Logic
VBB Undervoltage
VBB(uv)
∆VBB(uv)
VREG13(uv)
∆VREG13(uv)
VBB(ov)
Decreasing VBB
VBB(recovery) - VBB(uv)
Decreasing VIN
4.5
200
7.5
200
16
24
32.5
2.1
5.25
450
8.25
450
19.6
28
36.4
3.1
–
–
–
–
–
–
–
–
–
–
–
–
6.0
700
9.0
700
22
30.5
39
4.1
1.4
1.0
V
mV
V
mV
V
V
V
V
µA
µA
V
V
V
V
V
V
V
µA
µA
µs
µs
µs
V
µA
°C
°C
VBB Undervoltage Hysteresis
VREG13 Undervoltage
VREG13 Undervoltage Hyst.
VBB Overvoltage
VREG13(recovery) - VREG13(uv)
Increasing VBB, FAULT = 0 to 1, VOVSET = 0 V
Increasing VBB, FAULT = 0 to 1, VOVSET = 0.45 V
Increasing VBB, FAULT = 0 to 1, VOVSET = 0.9 V
VBB(ov) - VBB(recovery)
0 V < VSET(ov) < 0.9 V
0.3 V < VDSTH < 3 V
VDSTH = 0.3 V
VDSTH = 1.0 V
VDSTH = 3.0 V
VDSTH = 0.3 V
VDSTH = 1.0 V
VDSTH = 3.0 V
If VDRAIN < VDO(th), FAULT = 0 to 1
RESET = 0
RESET = 1, VDSTH < 3 V
RESET = 0, pulse
From RESET = 1 to FAULT = 0
VBB Overvoltage Hysteresis
OVSET Input Current
VDSTH Input Current
∆VBB(ov)
ISET(ov)
IDSTH
–
–
Short-to-Ground Threshold
VSTG(th)
VDSTH-0.14
VDSTH-0.18
VDSTH-0.39
VDSTH-0.20
VDSTH-0.24
VDSTH-0.37
VDSTH+0.10
VDSTH+0.13
VDSTH+0.26
VDSTH+0.30
VDSTH+0.30
VDSTH+0.30
3.0
y
Short-to-Battery Threshold
VSTB(th)
VDRAIN /Open Bridge Threshold
VDRAIN /Open Bridge Current
VDO(th)
IVDRAIN
1.0
–
–
0.15
–
–
–
–
–
–
1.0
500
2.0
–
–
0.4
1.0
–
Fault Latch Clear Pulsewidth
Fault Clear Propagation Delay
Fault Detection Noise Filter
Fault Output
tlatch
tpd
tnoise
Vout(0)
Iout(1)
TJ
2.0
1.7
–
–
172
12
Iout = 5 mA, faults negated
Vout = 5 V, open-drain, fault asserted
TJ increasing
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
∆TJ
TJ decreasing
–
NOTES: Typical Data is for design information only.
Negative current is defined as coming out of (sourcing) the specified device terminal.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
6
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