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DC DC Converters: PT6407E Application Field and Working Principle

DC DC converters are the basic components of modern electronic equipment. PT6407E is a high-performance, cost-effective device in the DC DC converter product line of Toshiba. This paper mainly introduces the application field and working principle of the PT6407E device.

Application Field of PT6407E

The PT6407E DC DC converter is mainly used in mobile phone motherboards, tablets, computers, laptop power supplies, car charger and other 3C building products. The product uses 5x6mm surface mount technology, which has a minimum no-load operating current of 4μA, a maximum power conversion efficiency of 90%, and a wide operating temperature of -40°C to +125°C. It supports up to 6V to 20V input voltage, and the output voltage is adjustable from 0.6V to 16V. It features up to 700mA load current, up to 8mV low ripple, high EMI performance, low noise and high efficiency.

The PT6407E DC DC converter supports constant voltage/current output, bulk capacitance of up to 150uF, and 1ms response time for output current change. It is suitable for high current devices that require fast response or require high frequency capacitor charging.

Working Principle of PT6407E

The PT6407E DC DC converter mainly consists of an inductor, a switch, an output stage and a control system. Under the control of the control system, the switch connected to the input voltage is turned on and off. When the switch is turned on, a current is induced in the inductor, causing the output voltage to rise. When the switch is turned on, the energy stored in the inductor is released, causing the output voltage to drop. The output stage is used to regulate the output voltage and ripple current. The control system also heatsink the switch and adjusts the output voltage.

The PT6407E DC DC converter supports a high efficiency conversion rate, and its switching frequency can be accurately adjusted. Furthermore, it has an accurate soft start circuit to limit the inrush current. In addition, the PT6407E converter is equiped with built in over-voltage protection to protect it from excessive voltage, and it also supports remote control.

Conclusion

In conclusion, the PT6407E DC DC converter is a high performance, cost-effective device which is mainly used in mobile phone motherboards, tablets, computers, laptop power supplies, car chargers and other 3C building products. It has a wide operating temperature of -40°C to +125°C and supports a maximum power conversion efficiency of 90%. It features up to 700mA load current, up to 8mV low ripple, high EMI performance, low noise and high efficiency. In addition, the PT6407E converter supports an accurate soft start circuit and built in over-voltage protection to protect it from excessive voltage.

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