PH75S48-28

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DC-DC converters are used to convert an input voltage in one range to an ouput voltage in another. The PH75S48-28 is a DC-DC converter that offers good suppressing performance against radio frequency interference (RFI) for signal stability in today\'s applications. It features a so-called soft-start circuit, allowing it to control the magnitude of current during the startup process, gradually builds up to the normal value, which enables a higher efficiency and avoided the damage of inrush current.

The PH75S48-28 is a bucket DC-DC converter, with a nominal input voltage of 8 to 16 VDC and a nominal output voltage of 5V/30A. It has maximum switching frequency of 400kHz and total harmonic distortion (THD) of 75%. The rated efficiency is 97%, and the minimum load 20%. Its dimensions are 1.18(L) × 0.90(W) × 0.43(H) inch. The PH75S48-28 is approved by UL, CE, C-Tick, FCC, and CB.

The PH75S48-28 application fields include: automotive and battery-powered applications, data communication equipments, industrial process control, networking devices, and telecommunications. It is also suitable for applications in home appliances, consumer products, and instrumentation.

The PH75S48-28 works by converting the different voltage inputs into lower or higher levels of output. It uses mutiple stages of voltage conversions, allowing it to achieve greater than 95% effeciency. In the PH75S48-28 module, its features an integrated widely used PFM/PWM converter. It utilizes pulse width modulation (PWM) along with pulse frequency modulation (PFM) to maintain stable output voltage for low output and power levels by controlling the pulse frequency with ultrasonic switching mode technology.

The core components of this module are two independent high side transistors and two phase-shifted cross-coupled low side switches. The high side transistors control the power flow from the input to the output. The low side switches are used for controlling the the stage’s output voltage, by varying the pulse frequency. This module also has soft-start and fault-proof functions that enable efficient operation and improved reliability.

The PH75S48-28 can handle a range of input voltages and deliver a programmed output voltage with high precision. This is why it has become widely preferred in applications requiring tight load regulation and high efficiency. Its robust construction and small size means that it can be used in numerous applications. It is also a highly cost effective solution, offering reliable operation and superior performance.

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