LTC3813EG#TRPBF

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Introduction to LTC3813EG#TRPBF Application Field and Working Principle

LTC3813EG#TRPBF is a step-down integrated circuit under the PMIC - Voltage Regulators - DC DC Switching Controllers class. It’s a high speed controller that can be used to manufacture highly efficient, small and powerful dc-dc converters. This article mainly introduces the application field and working principle of LTC3813EG#TRPBF.

Application Field of LTC3813EG#TRPBF

The LTC3813EG#TRPBF integrated circuit was designed with a wide range of applications in mind. It can be used as a DC-DC single stage buck regulator in storage systems, consumer electronics and telecommunications equipment. It also works perfectly in automotive systems when used as a battery charger or DC-DC converter. It can also be used to create multi-phase DC-DC converters for high current application fields such as digital power supplies and other power hungry consumer electrical systems.

In addition, the LTC3813EG#TRPBF is equipped with built-in soft start, current-mode control and a spread spectrum frequency. The purpose of spread spectrum modulation is to reduce any type of EMI or noise radiation emitted from the DC-DC converter.

Working Principle of LTC3813EG#TRPBF

The LTC3813EG#TRPBF integrated circuit utilises buck-based converters. The buck converter consists of a high side and low side switch which operate in tandem. The source voltage is connected to the high side MOSFET and the load is connected to the low side MOSFET. When the high side MOSFET is ‘on’, the source voltage is applied across the switch and inductor and is stored in the inductor. As the high side switch is ‘off’, the energy stored in the inductor is released through the load connected to the low side MOSFET.

This process is regulated and controlled by an external pulse width modulation or PWM circuit. The PWM circuit produces a signal which is used to close and open the high side and low side MOSFET at a specific duty cycle. The period of the duty cycle is determined by the PWM frequency. By varying the duty cycle, the LTC3813EG#TRPBF can be used to adjust the output voltage.

The LTC3813EG#TRPBF also features an ‘current-mode’ control. This control method provides a more stable output voltage when the source voltage and load current vary. The solution also features a frequency hopping called ‘spread spectrum’ which reduces any EMI radiation emitted from the device.

Conclusion

The LTC3813EG#TRPBF integrated circuit can provide a variety of solutions in a variety of applications. It is equipped with high speed controllers and a spread spectrum method which helps reduce emission radiation. This article has introduced the application field and working principle of the LTC3813EG#TRPBF. The specific data is subject to PDF, and the above content is for reference