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H-Bridge Low Frequency and change output voltage

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unavezmasysale

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Dear,

I need to change the duty cycle of a HBridge, with fix frequency (10Hz). The Vin is 400V. Has someone some good document to read and understand? I will control it with a microcontroller.

Thanks.
 

SunnySkyguy

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Three types of pulse-width modulation (PWM) are possible:

1. The pulse center may be fixed in the center of the time window and both edges of the pulse moved to compress or expand the width.
2. The lead edge can be held at the lead edge of the window and the tail edge modulated.
3. The tail edge can be fixed and the lead edge modulated.

How fast do you intend to change the PWM value? 10Hz is very slow, normally it is 1k ~100kHz

Microchip has digital programmable PWM outputs for your convenience.
 

unavezmasysale

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The Vin of the HBridge is 400Vdc, I need to have a 10Hz semi sinusoidal signal and the possibility to change the duty cycle to change the average voltage at the output.
The idea is correct? Can I do that with a HBridge?
Thanks.
 

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