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Advantages of DCDC power module

Edit:Nanjing Fulaixiang Electronics Co., Ltd.UpDate:2021-05-06

The dcdc power supply module uses a switch to control the power supply. There are two types of DC/DC analysis for step-down and step-up, which are called step-down here. For example, input 10V in DC/DC. There are oscillators and chopper modules inside the DC-DC. For example, one important time period allows 10V to pass, and another different time period does not allow 10V to pass (equal to 0v).

On the other hand, if there is a capacitance at the output, the capacitance is large enough. As a result, the intermediate pulse waveform is calculus, and a 5V DC waveform is output. Compared with the constant voltage module, this step-down process avoids the power consumption of the step-down module to a greater extent. The internal oscillator keeps the output constant by controlling its duty cycle (for example, in a certain DC-DC, the input range is 6V to 16V, the output is 5V, and the error is only a few tenths of a volt. In addition, the output and input voltage of the stabilization module are different. With a certain linear relationship, the input voltage of 7V is quite different from the input voltage of 14V.

Different suppliers now sell many different power modules on the market, but enter these modules according to the product, rather than integrated solutions, because the use of power modules can save development time and speed up the time to market.

The dcdc power module also has the following advantages:

Each unit can be individually rigorously tested to ensure the high reliability of the product, including electrification testing to exclude substandard products. In contrast, integrated solutions are difficult to test because the entire power system works closely with other functional systems in the circuit.

Different manufacturers can design modules of the same size according to existing technical standards, providing power supply unit engineers with multiple options. Each module is designed and tested according to standard performance, so the risk can be reduced by adopting new technologies.

If we adopt an integrated solution, when some problems occur in the development of the power supply management system, the entire motherboard needs to be replaced. If modular design can be adopted, just replace the problematic module, thus saving resource cost and development time.