Military power analysis: the difference between power isolation and non-isolation

Military power supplyAnalyze the concept of power isolation and non-isolation:

Isolated power supply for military power supply: There is no direct electrical connection between the input circuit and the output circuit of the power supply. The input and output are in an insulated high-impedance state, and there is no current loop.

Non-isolated power supply for military power supply: there is a direct current loop between input and output

The main difference between isolated and non-isolated power supplies:

1. The reliability of the isolation module is high, but the cost is high and the efficiency is poor.

2. The structure of the non-isolated module is very simple, with low cost, high efficiency and poor safety performance.

Applications of isolated and non-isolated power supplies:

1. In order to improve the anti-interference performance and ensure the reliability of the power supply of the front stage of the system, an isolated power supply is generally used.

2. The IC or part of the circuit in the circuit board is powered. From the perspective of cost performance and volume, the non-isolated solution is preferred.

3. For occasions where safety is required, such as AC-DC for mains or medical power supply, isolated power supply must be used to ensure personal safety. In some cases, a reinforced isolated power supply must be used.

4. For the power supply of long-distance industrial communication, in order to effectively reduce the influence of ground potential difference and wire coupling interference, an isolated power supply is generally used to power each communication node separately.

5. For occasions that use battery power supply and have stringent endurance requirements, use non-isolated power supply.

The above is what military power supplies tell you about the difference between power isolation and non-isolation!