Check Freescale MC56F8037 or MC56F8323. They have been used in some digital power supply applications. Their PWM module and Timers can do the digital phase shifting.

--- On Tue, 12/2/08, sankar murmu wrote:

From: sankar murmu
Subject: Re: [motoroladsp] PSPWM
To: "gebrsa"
Cc: m...
Date: Tuesday, December 2, 2008, 9:37 PM


Use DSP for both loops, since the DSPs are strong and you save cost on analog phase shift controller IC.

On Tue, 02 Dec 2008 gebrsa wrote :
>
>Hi guys,
>
>I am designing a phase shifted PWM DC/DC converter for a fuel cell. I
>would like to use an average current mode controller to control the
>voltage out put by controlling the current using a double loop
>controller. I am thinking of using an analog Phase shited PWM
>controler IC for the current controller whose set point is generated
>with an external current programmer with controller built with a DSP.
>Do you think this is a good idea or should I use DSP for both loops?
>What do you advice me?
>
>Thanks
> Start a New Thread

Use DSP for both loops, since the DSPs are strong and you save cost on analog phase shift controller IC.
On Tue, 02 Dec 2008 gebrsa wrote :
>
>Hi guys,
>
>I am designing a phase shifted PWM DC/DC converter for a fuel cell. I
>would like to use an average current mode controller to control the
>voltage out put by controlling the current using a double loop
>controller. I am thinking of using an analog Phase shited PWM
>controler IC for the current controller whose set point is generated
>with an external current programmer with controller built with a DSP.
>Do you think this is a good idea or should I use DSP for both loops?
>What do you advice me?
>
>Thanks
> Start a New Thread

Hi guys,

I am designing a phase shifted PWM DC/DC converter for a fuel cell. I
would like to use an average current mode controller to control the
voltage out put by controlling the current using a double loop
controller. I am thinking of using an analog Phase shited PWM
controler IC for the current controller whose set point is generated
with an external current programmer with controller built with a DSP.
Do you think this is a good idea or should I use DSP for both loops?
What do you advice me?

Thanks Start a New Thread