PB01S0503A

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DC DC Converters

DC-DC converters are power solutions used to regulate the input voltage from one source to a higher or lower level of steady state output voltage. DC-DC converters vary in design from off-line converters (transformer or capacitor/inductor based) to switch mode power supplies (SMPS).

PB01S0503A is a three-terminal offline non-isolated switch mode power supply for personal computer and digital products.

PB01S0503A application field includes a range of products such as cameras, DVD players, portable audio players, set-top-boxes, digital video recorders, mobile phones, displays, and various electronic toys.

The main features of the PB01S0503A are its high efficiency, low no-load input power, wide input range, as well as low cost and small size.

The PB01S0503A operates with a wide input voltage ranging from 4.4V to 24V. It is provided with a protection circuit which shuts down the converter in case of short-circuit, overheating, and loss of regulation.

PB01S0503A works with a synchronous rectification method. This is made possible thanks to the MOSFET control technique which provides exceptional efficiency at light and heavy load conditions. The transition of the output voltage and current is controlled by a specialized onboard control chip and feedback resistor.

The PB01S0503A output voltage can be set up to 24V and the output current can be set to 0.5A. The PB01S0503A also features an output voltage accuracy of +/- 5 % (including output ripple). The maximum power efficiency of the PB01S0503A is up to 90% and the minimum efficiency is up to 67%.

PB01S0503A has a wide operating temperature range from -40 to +125 degrees C. It can also work in ambient humidity from 8 to 95 % RH. It is provided with efficient power saving to reduce energy consumption.

The PB01S0503A main components are a switching regulator, filter, input capacitor, current limiting circuit, output capacitor and an OTP circuit. The input voltage is converted to DC by the switching regulator and then rectified and filtered. The current limiting circuit monitors the output current and the over-temperature protection (OTP) monitors the converter temperature. The output voltage is regulated by changing the duty cycle of the switching regulator in response to small changes in the reference voltage.

The PB01S0503A provides reasonable power density in the range of 1-3W. The converter operates in both step up and step down modes. The wide input voltage range of 4.4 – 24V makes it suitable for use in versatile applications.

In conclusion, the PB01S0503A is a reliable and incredibly efficient switch mode power supply suitable for a wide variety of applications. Its wide input voltage range, light weight and small size make it an ideal choice for portable electronic devices and products with space constraints. Its protection circuit ensures safety and the onboard control chip guarantees accurate output performance and high power efficiency.

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