RH-1515D/H

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DC-DC converters provide a way to optimize the input supply voltage of the power converter to a voltage level suitable for use by other systems. RH-1515D/H is a type of DC-DC converter that is used for reliable, high efficiency DC-DC conversion. Below is an overview of the application field and working principle of RH-1515D/H.

Application field

RH-1515D/H belongs to high power off-line forward switch mode DC-DC converters, which can convert input voltage of 110Vac to15Vdc output. It has a wide input voltage range applicable to industrial application, a power capacity up to 150W and a full range of features. The RH-1515D/H is suitable for ORing, redundancy requirements, high reliability and high efficiency power supplies with features like active clamp reset, short circuit protection, integrated soft start as well as instantaneous power off. This feature allows RH-1515D/H to find wide applications in telecommunication, computing services, industrial control, alarm systems and other high reliability and high efficiency power supply fields.

Working Principle

RH-1515D/H, being a forward switch mode DC-DC converter, works based on the principle of continuous conduction mode (CCM) magnetic components. In this mode, the transformer primary side switch is driven by pulse width modulation (PWM), while the transformer energy is transferred back and forth from the primary side to the secondary side continuously, which results in a higher efficiency than the traditional switch mode DC-DC converters. The primary side input voltage is rectified through a full-wave bridge rectifier and then transformed by a power factor correction (PFC) stage before being used to drive the PWM switch circuit.

The PWM switch circuit further controls the power transfer on the primary side by diverting the current to the primary side windings through the switch which is determined by the control circuit. On the secondary side, the switch driving the output stage is also controlled by a control circuit, regulating the duty cycle accordingly and driving the output voltage feedback to maintain the output voltage to a predetermined level. The output stage then produces a byproduct of switching noise, which must be filtered out through high frequency capacitive and inductive components.

Conclusion

RH-1515D/H is a DC-DC Converter capable of converting a wide range of input voltages to a 15Vdc output. It is designed for reliability and high efficiency, and can be used in a variety of applications. It works on the principle of continuous conduction mode, with a PWM switch circuit, power factor correction, a full-wave bridge rectifier, and inductive and capacitive components used for filtering output stage noise.

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