LMZ10503EXTEVAL/NOPB

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The LMZ10503EXTEVAL/NOPB is a switching power supply evaluation board, belonging to the ‘evaluation boards - DC/DC & AC/DC (off-line) SMPS’ category. It is an excellent board for evaluating the performance of the LMZ10503 high performance APFC converter. This evaluation board can also be used to compare different configurations of the LMZ10503 series and explore other application possibilities.

The LMZ10503EXTEVAL/NOPB is a switching power supply evaluation board for 24Vin, 23A, and 0.8–3.3Vout, and is capable of delivering a peak power of 70W. It works in a wide input voltage of up to 50V, providing the highest DC power conversion efficiency in its class. The TPS54354 device, a 4.5A switch, is used as the main switching device. The evaluation board also features low-ESR electrolytic capacitors for input power filtering, along with high frequency snubber circuits for the loop stability.

The main purpose of the LMZ10503EXTEVAL/NOPB is to evaluate the performance characteristics of the LMZ10503 device for different types of applications. It is important to note that the evaluation board can be adapted for a wide range of input and output voltage combinations. The evaluation board is specifically designed to operate with an input voltage of 24V, and its output voltage can be adjusted to any voltage between 0.8V and 3.3V.

One of the most important features of the LMZ10503EXTEVAL/NOPB evaluation board is its switching power supply topology. This is a basic system consisting of two stages, namely an AC-DC converter and a DC-DC converter. In the first stage, the AC inputs are converted to the desired DC output, generally a 24V supply. This is accomplished by an AC/DC converter that consists of a rectifier bridge, a filter capacitor, and a controller. In the second stage, the DC output voltage from the first stage is converted to the desired voltage for the application. This is achieved by a DC/DC converter that includes the main power switch (usually a MOSFET or an IGBT), an inductor, and a power diode. The switching power converter then controls the output voltage to the desired value by varying the frequency and duty cycle of the main power switch.

As the LMZ10503EXTEVAL/NOPB is a non-precision evaluation board, design modifications are encouraged to explore its full potential. As the board is also optimized for low voltage applications like SBCs (Single Board Computers) and PoE (Power over Ethernet) applications, modifications for higher voltages can also be done by simply changing the inductors and capacitors of the DC/DC converter.

In conclusion, the LMZ10503EXTEVAL/NOPB evaluation board is an excellent tool for evaluating the performance of the LMZ10503 high-performance APFC converter. It can be used for a wide range of application types, and its precision design allows for a wide range of design modifications. It is an important component for any engineer working with power supply solutions.

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