参数资料
型号: TLE6280GP
厂商: INFINEON TECHNOLOGIES AG
元件分类: 运动控制电子
英文描述: BRUSHLESS DC MOTOR CONTROLLER, PDSO36
封装: PLASTIC, SO-36
文件页数: 13/25页
文件大小: 357K
代理商: TLE6280GP
Datasheet TLE6280GP
20
2007-07-19
Typ. Boostrap voltage vs. Duty Cycle
Conditions:
Mosfet: 6x SPB80N04S2-04; fPWM=20kHz, Vs=9V
Parameter:
Charge pump capacitor CCP / Bootstrap capacitor CBX
Remark:
The reachable duty cycle depends on the used PWM patterns. To achieve an even higher duty cycle, run it for
some periods and reduce the duty cycle only for 1 period down to 90% to recharge the bootstrap capacitors.
Fig. 14: Typ. bootstrap voltage V(BHx)-V(SHx);
duty cycle of 1 half-bridge = 0%; duty cycle of the other 2
halfbridges variable
Fig. 13: Typ. bootstrap voltage V(BHx)-V(SHx);
duty cycle of 1 half-bridge = 50%; duty cycle of the other
2 halfbridges variable
0
2
4
6
8
10
12
14
0
10203040506070
8090
100
Duty Cycle [%]
1.5F / 220nF
3F / 440nF
4.5F / 660nF
0
2
4
6
8
10
12
14
0
10203040506070
8090
100
Duty Cycle [%]
1.5F / 220nF
3F / 440nF
4.5F / 660nF
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