Thank you for your replies
As I said I have already read the referance manual from cover to cover BUT
Complimentary mode with deadtime doesnt do it as that only covers the case of 100% duty cycle with deadtime.
Yes it could drive something like a CCFL inverter where the duty cycle is always near 100% but not a variable power smps where the duty cycle may vary from maybe 1-99%. Another way to consider a half-bridge is the two drive signals need to look like a push-pull circuit using a centre tapped transformer and two switches that are on on alternate pwm cycles for a variable (but importantly identical) duty cycle.
Unfortunatly the complimentary mode takes the singular OCyREF internal pwm output and applies it to the true and compliment outputs with deadtime insertion but otherwise simeltaniously, not alternatly.
I hope I am making sense.
I am seriously worried this thing cannot hack it and if thats the case I would be suitably astonished, so I am hoping I have just missed something somewhere