What role does the DC-DC adapter play?

The DC-DC adapter generally consists of a housing, a power transformer, and a rectifier circuit.

Is it normal for the DC-DC adapter to heat up?

What is the scope of application of the DC-DC adapter?

What role does the DC-DC adapter play?

Is it normal for the DC-DC adapter to heat up?

We should all know that 220 V AC current is transformed by a transformer and converted to DC by a rectifier. This is where consumption is consumed, and this consumption is converted into heat, so it is normal for the power supply to heat up. The DC-DC adapter is made of silicon steel sheets. After the transformer is powered, a magnetic flux is generated, and the magnetic flux causes a force between the silicon steel sheets, resulting in a normal humming noise.

What is the scope of application of the DC-DC adapter?

DC-DC adapters are widely used in phones, game consoles, voice amplifiers, Walkmans, notebooks, mobile phones and other devices. The role of the power supply is the transformer and the rectifier. Household alternating current is 220 V, and our computer mass is DC 12 V (as if so), so we can be sure that the DC-DC adapter is a transformer and rectifier.

What role does the DC-DC adapter play?

The input of the DC-DC adapter is the mains voltage of 220V. In general, the value of the required DC voltage differs greatly from the effective value of the mains voltage. Therefore, it is necessary to reduce the voltage through the power transformer before the AC voltage is processed. The effective value of the transformer secondary voltage depends on the needs of the subsequent circuit. In practice, transformers may not be used, but other methods can be used.

The voltage on the secondary side of the transformer is converted via a rectifier circuit into a DC voltage, ie a sine wave voltage is converted into a unidirectional pulsating voltage. Since the rectified voltage contains a large AC component, it affects the normal operation of the load circuit and cannot be used directly. To reduce the voltage ripple, the DC-DC adapter must be filtered through a filter circuit (capacitor) to smooth the output voltage. Ideally, all AC components should be filtered out so that the output voltage of the filter circuit is only one DC voltage. However, since the filter circuit is a passive circuit, the filtering effect is impaired after connection to the load. For electronic circuits that do not require high stability, the rectified and filtered DC voltage can be used as power supply.

Although the AC voltage after rectification and filtering becomes a DC voltage with a small percentage of AC voltage, its mean value also changes if the mains voltage fluctuates or load changes. The function of the voltage regulator circuit is to make the output DC voltage substantially free from the influence of mains voltage fluctuations and load changes to obtain a sufficiently high stability.

HIENT Power Technology Co., Ltd. has various DC-DC adapters that enable the enhancement of the products and make them more effective, reliable and consistent.