TPS40090-Q1: PWM compatible with 5V DrMOS?

I am not aware of any design which is using them now. There are several potential considerations.

1- The PWM logic level. TPS40090 will signal from BP5 (high) to Gnd (low). TPS40090 does not have tri-state PWM outputs. So, you will see the low-side FETs on when the controller is disabled for any reason.

2- Are you considering smart power stages (e.g. 5mV/A current sense output) or would you use standard DCR current sensing? 

3- TPS40090 will not be aware of any more modern integrated power stage conventions like a temperature sense pin, or power stage fault. 

Thanks for the quick answer. I realize it's an old controller. What I'm looking for is a PWM controller that can take standard 5V DrMOS for power stage. I do not need smart power stage or temp sense. All I have seen so far from TI is VR12.x like controllers. The issue with VR12 is that the boot voltage starts at 1.05V. I realize I can fake the feedback path to make it more generic. But that'll affect the compensation.

What I'm looking for is a generic 3 or 4 phase controller that the output can be set by simple resistor divider at feedback input. If you know such device please let me know.

Thanks.. 

Hello, I suggest to look at TPS53676 and TPS536C7B1. These are newly released multiphase controllers, designed to work with the smart power stages, and have Boot voltage pinstrapping.