Other Parts Discussed in Thread: TPS92691
For a new project we are starting we need to control a polyamide heater pad with a maximum power of 160W 24V Hz. We have a temp sensor for measuring the temperature and a T.I. Piccolo DSP for control of the complete system.
Of course we can just switch on and off the heater pad depending on the temperature but probably this causes peak currents on the supply line. Therefore maybe a better solution would be a controller to have a more smooth control of the regulated power.
Do you think it is possible to use a LED driver (e.g. a LM3429 or something else for this application ? Or do you suggest another part for this?
With our Piccolo DSP we are able to generate PWM so we could use a driver with PWM control.
The heating power we need will be around 90W and is used for heating fluid in a tank. The heater pad can generate max 160W but we don't use that max power.
So we need at least a driver with a controlled output of 4A at +24V (or e.g. 5A at +20V )
Chris van der Aar
NTS Systems Development
Eindhoven, The Netherlands