The power design process is an extremely difficult task, from the understanding of complex circuits to the help of chip dealers, no one is easy and easy. This article will show you how to use your existing tools to quickly design your own power supply without the need for a chip manufacturer – no need to ask anyone. Completing this challenging task with some of the existing software and hardware tools is no longer as difficult as it used to be. Your power circuit design is now in your hands.
For example, let's start by designing a step-down DC/DC circuit. A typical example of such a circuit is the TPS54331, an Eco-modeTM 3A, 28V input, buck SwiftTM DC/DC converter. This converter is a 28-V, 3-A non-synchronous buck converter with integrated low RDS(on) high-side MOSFETs. In order to improve the efficiency under light load conditions, the skip pulse energy saving mode function is automatically enabled. The resistor divider sets the input undervoltage protection hysteresis.
The manufacturer provides a lot of technical support for this product. The product specification for the TPS54331 [1] provides device information such as typical device characteristics, detailed product descriptions, and circuit design guidelines. In addition to the detailed product product specification, an evaluation module [2] is also available. This module provides you with a hardware platform (Figure 1) that allows you to measure and modify your circuit (Figure 2) during the final circuit design phase.
Figure 1 TPS54331 evaluation board layout
Figure 2 TSP54331 evaluation board layout
However, before you choose the final DC/DC converter circuit, you might consider a tool like TI SwitcherProTM software. The dealer will tell you where to get this software [3]. SwitcherPro power design software is available in both online and desktop versions, allowing you to use TI's products for power supply design. With SwitcherPro power design software, you can take advantage of the EVM reference design as a starting point for you to start custom power design. The desktop version gives the power supply design more flexibility because there is no need to connect to the Internet. Now you can start the power design by following your own steps!
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