PH100S48-15

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DC-DC converters are electronic devices for converting electrical energy from one form to another, usually from a DC input source to a DC output power source. They are used in a wide variety of applications, and the most popular type of DC-DC converter is the PH100S48-15.

PH100S48-15 Application Field and Working Principle

The PH100S48-15 DC-DC converter is designed for use in general-purpose, industrial, and medical applications. It is suitable for applications such as Automotive multiplexing, motor drive power supply, adjustable switching power supply, computer power supply, telecommunications, and instrumentation. The device is a high efficiency (91%) switch mode DC-DC converter capable of providing up to 48V output at 15A. It has a wide input voltage range of 4.5V to 40V and an adjustable output voltage of 0.8V to 48V. It has excellent thermal performance and requires no external components.

The working principle of PH100S48-15 DC-DC converter is based on the buck and pulse-width modulation (PWM) topology. The PH100S48-15 is a constant switching frequency (100KHz) PWM DC-DC converter that uses a high-side MOS series switch and a low-side MOS series switch for pulse width modulation to control the output voltage. The device has a separate input and output power stage, allowing independent control for both input and output voltage adjustment. The input voltage is regulated by a power train composed of an external MOSFET switch and a feedback loop, while the output voltage is regulated by a separate power train composed of a Pulse Width Modulation (PWM) controller and an external MOSFET switch. The output voltage is regulated by sensing the current of the low side MOSFET switch by using a sense resistor, which helps to achieve a precise output voltage.

The PH100S48-15 DC-DC converter also features adjustable soft-start. This feature limits inrush current and ensures a smooth start-up of the converter by gradually increasing the output voltage. Additionally, the device has over-temperature protection, over-current protection, and short-circuit protection, which helps to protect the device from fault conditions.

In summary, the PH100S48-15 DC-DC converter is a high efficiency, high frequency (100KHz), switch-mode DC-DC converter. It has wide input and output voltage range, requires no external components, has adjustable soft-start and several protection features. It is used in a variety of applications such as automotive multiplexing, motor drive power supply, adjustable switching power supply, computer power supply, telecommunications, and instrumentation, making it an ideal choice for many applications.

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