MC33937 Datasheet, PDF (44/48 Pages) Freescale Semiconductor, Inc – Three Phase Field Effect Transistor Pre-driver

TYPICAL APPLICATIONS
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
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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.
33937A
44
Analog Integrated Circuit Device Data
Freescale Semiconductor