Hi, I'm Jason Arrigo, Applications Engineer supporting TI's power modules. Today I'm going to be demonstrating the EVM for the TPSM831D31 power module. This device is ideal for powering low voltage, high current rails, such as core rails of FPGAs, A6 DSPs, server applications. I'll be showing you how to connect the device and also to configure it using our software, along with some other things. But more information can also be found at TI.com. So let's go and look at some of the features of this device.

The TPSM831D31 has an input voltage range of 8 volts to 14 volts. It's a dual output device. One output is capable of 120 amps, while the other output is capable of 40 amps. Both output voltage ranges are from 0.25 volts to 1.52 volts, and can be programmed with the PMBus command set, and has telemetry for monitoring the junction temperature, the output current, and also the output voltage of the device.

The device is packaged in a 15 millimeter by 48 millimeter QFN package. The graph on the right shows the thermal safe operating area of the device. It can be operated up to 105 degrees C ambient temperature, and all the way up to a total of 160 amps of output current. And graphed here are four different graphs of four different airflow.

OK, now let's look at the connection of the EVM to the equipment. The equipment that we use to power the EVM-- we have a power supply used for supplying input power. We have two loads for both the outputs of the device connected to the terminal blocks of the EVM. And we have three multi-meters, one for monitoring the input voltage and two for monitoring the output voltages of each of the outputs.

The input power is connected to the EVM through the input terminal block shown here with test leads for monitoring the input voltage on either side of the terminal block. Output voltage one is connected through these three terminal blocks. And the test points for monitoring the output voltage are connected here. And then there's also a socket for measuring wave forms using an oscilloscope.

The terminal block here is for output voltage two. And test points for monitoring this voltage is also located here, along with an oscilloscope socket. All the terminal blocks are connected using heavy gauge wire to be able to handle the heavy currents of this application. Test points for the features of the device are located at the bottom of the board, including two jumpers for enabling both of the outputs.

The PMBus interface socket is located at the bottom of the board here that connects the GPIO to USB pod, which connects the board to the computer for programming. And when this is connected, the green LED will light up on the board to show that the pod is connected. So using that PMBus connection, now let's go to the computer and see how the board interfaces with the Fusion Digital Power Designer software.

I already have the Fusion Digital Power Designer software loaded on my desktop. So I'm going to launch this year. And as this launches, and as long as power is applied to the device and it's connected to the computer, it will recognize the device and launch the software. So recognize the device and launch the software.

If it doesn't recognize it, you'll need to apply power and retry. So the first thing to check is make sure in initial power on that the control lines are set to high. And they are, so I'll close this screen. And then I'll come to this tab here and click to configure the device. So we maximize this screen. And so now there's multiple tabs along the top of the device that are used to configure the device.

And so I'm going to start with the Static tab. And here I'm going to set the output voltage of-- up here we show it's rail number one. So I'm going to set this voltage to 0.85 volts. And then I'm going to write it to hardware in order for the device to know to change to the new voltage. If I want to permanently store it, I need to click the Store Config to Non-Volatile Memory tab.

Other thing to know is the VBOOT register is the voltage that the device will reset to when power is removed and reset. So if we want this to be changed to another voltage, we'd have to set it there as well. I'm going to leave that at 0.5 for this. And so then as I change the output voltage, now I can go and monitor the outputs of the device.

And so here we're monitoring in this screen the input voltage, or about 12 volts input. The output voltage is now 0.85 volts. We're also monitoring the output current. And I'm going to adjust this to be able to see it better. About 50 amps of output current. And then the junction temperature of the device-- I'm also going to change this to 25 degrees C. Junction temperature of the device is about 47 degrees C.

All right, so now to switch and monitor rail number two. If I click here, I can select rail number two. And now we're monitoring the input voltage 12 volts, output voltage of 0.5 volts, output current of a little over 14 amps, junction temperature of 45 degrees C. I can also go and same thing, configure. I still have rail two highlighted. I can configure the output voltage to say 1.2 volts. Write that to hardware. And then as we go back and monitor, now we see that the output voltage has changed from 0.5 to 1.2 volts.

OK, so as you can see how quick and easy it is to power and configure the TPSM831D31. For more information, go to TI.com/powermodules. And thanks for watching.