How to debug the power supply of an integrated device
This guide provides an in-depth, step-by-step approach for debugging a device at the board level. We'll walk you through checking key components such as capacitors, transistors, diodes, and integrated circuits (ICs), explaining what each does, how to test them, and how. Gone are the days where power supplies use simple pulse-width modulators (PWMs) with limited bells and whistles. Integrated circuits (ICs) have dozens of pins and features like soft start, current limiting, pre-bias startup, and boot capacitors. The Microchip Power Debugger is a powerful development tool for debugging and programming ARM®Cortex®-M based Microchip SAM and Microchip AVR®microcontrollers using JTAG, SWD, PDI, UPDI, debugWIRE, aWire, TPI, or SPI target interfaces. After a circuit board is soldered, when checking whether the circuit board can work normally, it is usually not directly powered on, but the following steps should be followed to ensure that there is no problem in each step before powering on. In this post, we'll be walking you the basics for checking the control logic of a power supply design.
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