DRV8402 Datasheet, PDF (7/18 Pages) Texas Instruments – Dual Full Bridge PWM Motor Driver

DRV8402
www.ti.com ........................................................................................................................................................................................... SLES222 – DECEMBER 2008
TYPICAL CHARACTERISTICS
EFFICIENCY
vs
SWITCHING FREQUENCY
100
90
80
70
60
50
40
30
Full Bridge
20 Load = 5 A
P_VDD = 50 V
10 _{TC = 75°C}
0
0 50 100 150 200 250 300 350 400 450 500
f - Switching Frequency - kHz
Figure 1.
NORMALIZED R_DS(on)
vs
JUNCTION TEMPERATURE
1.6
1.10
NORMALIZED R_DS(on)
vs
GATE DRIVE, GVDD
1.08
1.06
1.04
1.02
1.00
T_J = 25°C
0.98
0.96
8 8.5 9 9.5 10 10.5 11 11.5 12
GVDD - Gate Drive - V
Figure 2.
DRAIN TO SOURCE DIODE FORWARD
ON CHARACTERISTICS
6
1.4
5
T_J = 25°C
4
1.2
3
1.0
2
0.8
1
GVDD = 12V
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
Voltage - V
Figure 4.
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