I am looking to build an H-bridge to control a brushed permanent magnet DC motor. The motor has the following ratings:
Full load current: 18A
kW rating: 0.43kW
I am planning to use two BTN8982TA High Current PN Half Bridges by Infineon (Link to Data sheet below) to form a single H-bridge. Looking at the data sheet I can see that both the maximum voltage and current ratings are high enough to fit my application. However I am not sure if these Half bridges can handle the power ratings for my application. I cant to seem to find the maximum power ratings on the data sheet but I do have a link from the Infineon website which mentions that the half bridges can handle a total of 250W (see link below).
Can I continue to use these half bridges for my application if I was to use a heat sink and an external fan for cooling?
Also since I am using two of these half bridges to build an H-bridge does this mean that the power rating of my H-bridge is now 250W x 2 = 500W ?
Data sheet link: http://www.infineon.com/cms/en/product/power/motor-control-and-gate-driver-ics/intelligent-motor-control-ics/single-half-bridge-driver/BTN8982TA/productType.html?productType=db3a30443ef951e3013f0f6c88742068