参数资料
型号: PCZ33937AEKR2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 运动控制电子
英文描述: AC MOTOR CONTROLLER, 0.8 A, PDSO54
封装: 0.65 MM PITCH, ROHS COMPLIANT, SOIC-54
文件页数: 37/47页
文件大小: 750K
代理商: PCZ33937AEKR2
Analog Integrated Circuit Device Data
42
Freescale Semiconductor
33937
TYPICAL APPLICATIONS
PROTECTION AND DIAGNOSIS FEATURES
Figure 24. Power Dissipation Profile of Application Using Charge Pump
Reference application with:
Pump capacitor: 1.0
μF MLC
Pump filter capacitor: 47
μF low ESR aluminum electrolytic
Pump diodes: MUR120
Output FET gate charge: 240 nC @ 10 V
PWM Frequency: 20 kHz
Switching Single Phase
Below approximately 17 V the charge pump is actively regulating VPWR. The increased power dissipation is due to the charge
pump losses. Above this voltage the charge pump oscillator shuts down and VSYS is passed through the pump diodes directly to
VPWR.
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
5
1015
20
2530
3540
Supply Voltage (V)
P
o
w
er
D
issip
at
ed
(W
)
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