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you can use the lm3524, this IC provide the pulse corresponding to one of the transistor an for the second transistor of a half-bridge. But you can obtain only one center aligned PWM, with external configuration. You must to notice the dead time.
Thanks very much for your tips! Yes, I use microcontroller but it only provides edge aligned pwm. With center aligned pwm I can use space vector pwm, which is more efficient than sinusoidal pwm. I don't know how to create center aligned pwm with the traditionally microcontrollers.
Hi ltg,
It's easy to implement software pwm with microcontrollers. You can find source codes for software edge aligned pwm (i have had the codes for microchip's pic micros but my disk crashed, sorry i can't help you more) and after few computations i think you can write your software center aligned pwm codes. You should use your micro for ONLY pwm function, if you want to implement not only pwm but also other computations (like pid) use another micro as master chip.
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