33937 Datasheet, PDF (43/47 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

PROTECTION AND DIAGNOSIS FEATURES
1.500
1.400
1.300
1.200
1.100
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
10
15
20
25
30
35
40
45
50
55
60
Supply Voltage (V)
Figure 25. Power Dissipation Profile of Application Not Using Charge Pump
Reference application with:
• Output FET gate charge: 240 nC @ 10 V
• PWM Frequency: 20 kHz
• Switching Single Phase
• No connections to PUMP or VPUMP
• VPWR connected to V_SYS
If VPWR is supplied by a separate pre-regulator, the power dissipation profile will be nearly flat at the value of the pre-regulator
voltage for all V_SYS voltages.
Analog Integrated Circuit Device Data
Freescale Semiconductor
33937
43