PQB3-D24-S15-D

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DC-DC converters are a crucial part of many electronic systems. DC-DC converters are used to convert a higher voltage DC power source into a lower voltage DC power source. This allows a device to operate from a single supply voltage while providing multiple supply voltages for different applications. The PQB3-D24-S15-D is an example of a DC-DC converter.

The PQB3-D24-S15-D is a 3-kHz wide-input-range DC-DC converter designed to deliver an output current of 15A. The device operates from a wide input voltage range of 2.5V to 24V. The output voltage is adjustable from 0.8V to 12V. It is suitable for telecom, industrial, automotive, and medical applications. The device is housed in a small 16-pin QFN package for space-saving in compact systems.

The PQB3-D24-S15-D has a synchronous fixed-frequency current mode control. This allows it to respond quickly to changing load and line conditions with accurate current limiting and voltage control. The device also features programmable soft start and cycle-by-cycle peak current limiting. It also has programmable enable and disable pins. The device has a maximum junction temperature of 150°C, allowing it to be used in high temperature applications.

The PQB3-D24-S15-D also has a sophisticated power-saving mode, with light load efficiency reaching 95%. This device is suitable for applications requiring output current ranging from very low to moderate levels. The device also has a thermal foldback protection feature that reduces the output power when the device is placed in a hot environment.

In operation, an input voltage is supplied to the device. It then regulates the output voltage by switching the inductor current on and off at the switching frequency. During each cycle, the inductor current reaches its peak and then gradually lowers until the next cycle. The output voltage is then regulated by comparing the feedback voltage to an internal reference voltage. If the output voltage is too low, the device will increase the inductor current. If the output voltage is too high, the device will decrease the inductor current. The switching frequency is fixed at 3kHz, ensuring that it can respond quickly to changing load and line conditions.

The PQB3-D24-S15-D is an ideal choice for applications requiring a wide input voltage, small size, and high efficiency. The small size and wide operating temperature make it suitable for space-constrained applications. In addition, it offers the reliability and efficiency needed for various automotive, medical, telecom, and industrial applications.

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