data/text/DLP3/898565

CSD86360Q5D: Recommended Driver IC

Part Number: CSD86360Q5D Hello, In the recommended applications there is a driver IC shown next to the CSD86360Q5D. Doescompany have a device that fits this roll that can be powered by a 3.3V PWM signal? The reference design has uses the TPS40322. However the application has us using a particular Infineon controller, as the load is an AMD SVI2 based processor. The controller outputs a 3.3V PWM signal that our "Driver IC" would convert to the upper and lower gate controls. Essentially the sample TPS40322 device is too complex and we need a simpler gate-driver circuit, an 8-pin device like what is shown in the datasheet would be excellent. Thanks, Talon

Hi Talon, Thanks for the inquiry. I'm am the applications engineer forcompany discrete FETs and power blocks (like the CSD86360Q5D). I am going to have to redirect this to the appropriate product line. Are you looking for a gate driver IC such as the TPS51604 or a PWM controller with integrated gate drivers? I'm assuming your application is a synchronous buck converter. Is it a single phase or multiphase converter? These questions will help me determine the appropriate product line to send your inquiry.

Thanks for the quick response John, it is for a synchronous buck converter. We are stepping down a 12V input to our card down to a SVI2 controlled 0.7V-0.9V. Our plan is to use two of these in dual phase to power the main rail, and another to power a secondary VDDCI rail. Normally we would use a uModule for something like this, but the AMD processor we are powering uses a proprietary interface, SVI2. The controller, the IR3567B, takes in the SVI2 bus signals (similar to an IIC bus), and outputs several PWM signals that can be used by gate driver ICs to switch the FETs. It also has current and voltage sense inputs so that it can properly control the voltages. So we have two of the three parts identified for the system, the controller (IR3567), the FETs (CSD86360Q5D), and need the intermediate gate driver IC that can convert our PWM signals to the corresponding high and low side gate controls. The TPS51604 looks promising, thank you for that recommendation.