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Diodes - Rectifiers - Arrays

The STPS40H100CW is a Schottky rectifier array manufactured by STMicroelectronics. It is a two-diode device used in power switch mode power supplies (SMPS). This tiny device can withstand reverse voltage up to 100 volts and has low output carbon and fast response times. This makes it suitable for use in high-efficiency, low-profile and space-constrained SMPS applications.

Application Fields

The STPS40H100CW is typically used in switch mode power supplies (SMPS) applications, including isolated and non-isolated switching power supplies, laptop computer power supplies, battery chargers, medical electronics, and automotive electronics. The device is also suitable for applications requiring high frequency, low power, high efficiency, and low profile operating with wide input voltage ranging from 85 to 265 VAC.

Features & Benefits

Among the main features of the STPS40H100CW rectifier array are its low power consumption, excellent reverse voltage avalanche capability, and its fast switching times. The device also has excellent thermal stability, with a maximum junction temperature of 75C. Furthermore, it has an integrated transient voltage suppressor (TVS) built in, which provides protection from load current surges, thereby ensuring the safe operation of the device. Additionally, the device is RoHS compliant.

Working Principle

The STPS40H100CW works in a reverse conducting mode, when the anode of one diode is in a floating state and the cathode of the other is connected to ground. The current in a reverse conducting rectifier array flows in alternate directions through the two diodes. The two diodes act like two above-mentioned switches that switch alternately, when a voltage waveform across them changes in polarity. When the waveform switches to an advantageous polarity, the diode on the high side conducts allowing current to flow, and when the waveform switches to the other polarity, the other diode conducts, thereby reversing the direction of the current. Thus, it explains why the STPS40H100CW rectifier array is able to provide fast switching.

Conclusion

The STPS40H100CW rectifier array is an excellent device for applications requiring high efficiency, low power, and high frequency. With its low profile and fast switching times, it is suitable for use in a variety of SMPS applications. Its two diodes, operating in a reverse conduction mode, are responsible for the fast switching and high efficiency of the device.

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