TSW2200EVM

TSW2200EVM is an evaluation platform for Texas Instruments (TI) TPS52200EVM SMPS (Switch Mode Power Supply) controllers. The platform enables quick and easy evaluation of the TPS52200EVM when used in either a synchronous step-down application or a buck-boost application. It is designed to support key features such as adjustable output voltage, programmable soft-start, programmable loops for output voltage or current regulation, and very low standby current. It also features on-board diagnostics, including output voltage and current monitoring, and current-limit protection.

TSW2200EVM can be used to evaluate applications such as point-of-load (POL) converters, motor control applications, DC-to-DC converters, and high-current applications. It is designed to support up to 1.5 A DC output current and connects directly to the power supply through the standard connectors. With the capability to generate a wide range of output voltage from 0.8 to 5.2 Vdc, the TSW2200EVM is ideal for a variety of applications.

The working principle of TSW2200EVM depends on the application being used. For the buck-boost application, the output voltage is controlled by a combination of the input voltage and the output voltage using two simple control loops. The input loop establishes the input voltage level required for the output voltage level, while the output loop modulates the output voltage. A third loop is also used for soft-start of the output voltage.

For the synchronous step-down application, the output voltage is regulated by a single loop control, which is based on an on-board DAC and reference voltage. This loop regulates the gate drive according to the desired output voltage. This allows for higher efficiencies and lower noise in the output voltage as compared to the buck-boost application.

In both applications, the key components at work are the TPS52200EVM controller, the synchronous MOSFETs, the magnetic components, the EEUFC1515 inductor, and the EEUFC1717 output capacitor. The TPS52200EVM controller provides the gate drive for the MOSFETs, which in turn drive the magnetics, which in turn provide the output voltage regulation, over-current protection, soft-start, and under-voltage protection. The inductor acts as a filter to reduce ripple and noise in the output voltage and also helps in current transfer between the input and output. The output capacitor helps in filtering out high frequency noise.

Overall, the TSW2200EVM offers an easy and convenient way to evaluate the TPS52200EVM SMPS Controller in both synchronous step-down and buck-boost applications. Its wide range of outputs, programmable soft-start, programmable loops for output voltage or current regulation, very low standby current, and on-board diagnostics make it an ideal choice for evaluating a variety of applications.