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Haiti acdc power module potting requirements(1)

2023-06-14

power supply module

The potting of the acdc power module is very important. This process not only involves the protection of the power module potting acdc power module (waterproof, moisture-proof, dust-proof, anti-corrosion, etc.), but also involves the protection of the power module. thermal design.

Power active filter is a new type of power electronic device that can dynamically suppress harmonics. It can overcome the shortcomings of traditional LC filters and is a promising harmonic suppression method. The filter consists of a bridge switching power converter and a specific control circuit. The difference from the traditional switching power supply is: (1) not only feedback the output voltage, but also feedback the average input current; (2) the current loop reference signal is the product of the voltage loop error signal and the full-wave rectified voltage sampling signal.

Commonly used power module potting materials are divided into three categories: epoxy resin, polyurethane and silicone rubber

Epoxies cannot be used for stress-sensitive and module sealing due to their hardness and are basically eliminated by module power supplies. However, due to its low cost, this epoxy is still used in cost-sensitive micropower supplies. Some domestic bad Marine boost/buck voltage power supply manufacturers also use this epoxy resin acdc Marine boost/buck voltage power supply module. However, due to stress problems, the failure rate of this Marine boost/buck voltage power supply is very high, and buyers are miserable.