1. Meesage in wrong forum.

2. Yes, you can get PC-Add on cards with 3 and more timers on board.

3. But using such a setup for generating the pulses for three phase rectifier with IGBTs, is something quite involved.

4. As Andy suggested, the PCA in a modern 8051 derivative like the 89c51rd2 is quite an elegant way to do this.

5. Refine your application.

Raghu