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 VSYS
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 VSYS voltages.
33937
Analog Integrated Circuit Device Data
44
Freescale Semiconductor
FREESCALE [ Freescale ]
