DRV8412 Datasheet, PDF (8/28 Pages) Texas Instruments – Dual Full Bridge PWM Motor Driver

DRV8412
DRV8422
DRV8432
SLES242A – DECEMBER 2009 – REVISED DECEMBER 2009
www.ti.com
TYPICAL CHARACTERISTICS
EFFICIENCY
vs
SWITCHING FREQUENCY (DRV8432)
NORMALIZED R_DS(on)
vs
GATE DRIVE
100
1.10
90
1.08
80
70
1.06
T_J = 25°C
60
1.04
50
1.02
40
30
Full Bridge
20 _{Load = 5 A}
PVDD = 50 V
10 _{TC = 75°C}
0
0 50 100 150 200 250 300 350 400 450 500
f – Switching Frequency – kHz
Figure 1.
1.00
0.98
0.96
8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12
GVDD – Gate Drive – V
Figure 2.
NORMALIZED R_DS(on)
vs
JUNCTION TEMPERATURE
1.6
GVDD = 12 V
1.4
DRAIN TO SOURCE DIODE FORWARD
ON CHARACTERISTICS
6
T_J = 25°C
5
4
1.2
3
1.0
2
0.8
1
0.6
0
0.4
–40 –20 0 20 40 60 80 100 120 140
T_J – Junction Temperature – ^oC
Figure 3.
–1
0
0.2
0.4
0.6
0.8
1
1.2
V – Voltage – V
Figure 4.
8
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