Complementarty drive from microcontroller

[Prasad]

Hi,

I'm working on a project to construct a sine-wave inverter. The
switches on the output side are 4 IGBTs connected in H-Bridge
configuration. The IGBTs are right now driven by Mitsubishi M57962L
drivers. I've managed to acquire a microcontroller which gives the
required sine-wave PWM pulses at a switching frequency of 20kHz.

Now my problem is the interface the microcontroller to the IGBT
driver. How do i `split' the single PWM pulse in complementary pulses
to drive the high-side and low-side IGBTs??

I've heard there are ICs available that do the job. Someone suggested
UC3714. I've gone through the datasheet, and i feel its not the one
i'm looking for (or maybe i haven't understood the data properly?).

Can anyone suggest any solution??.

Reg.,
Prasad

 

[ChrisGibboGibson]

Hi,

I'm working on a project to construct a sine-wave inverter. The
switches on the output side are 4 IGBTs connected in H-Bridge
configuration. The IGBTs are right now driven by Mitsubishi M57962L
drivers. I've managed to acquire a microcontroller which gives the
required sine-wave PWM pulses at a switching frequency of 20kHz.

Now my problem is the interface the microcontroller to the IGBT
driver. How do i `split' the single PWM pulse in complementary pulses
to drive the high-side and low-side IGBTs??

I've heard there are ICs available that do the job. Someone suggested
UC3714. I've gone through the datasheet, and i feel its not the one
i'm looking for (or maybe i haven't understood the data properly?).

Can anyone suggest any solution??.

Yes, we already did. Why should we answer it again ?

Gibbo