TPS61003DGS

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TPS61003DGS is a DC-DC step-up converter from Texas Instruments designed for use in portable consumer appliances like mobile phones, digital cameras, PDAs, and GPS systems. It\'s a low cost, low power switching regulator designed to buck, boost, and/or invert a voltage from an input voltage of 3V to 6V up to 7V, with a nominal voltage of 3.3V to 5V with up to 500mA maximum output current. It has high efficiency, low EMI, and excellent line and load regulation. It also features thermal protection, short-circuit protection, and current limit.

Application Field

TPS61003DGS is a versatile buck-boost DC-DC converter with a wide range of applications including white goods, portable applicances, batteries, chargers, and notebooks. It is an ideal choice for those who need a low cost, low power switching regulator for their system. Additionally, it can be used for powering small motors, audio amplifiers, and various peripherals in various applications. With its high efficiency, low EMI, and excellent line and load regulation, it can be a great addition to existing solutions. Its short-circuit protection, current limit, and thermal protection features provide a great protection to the system.

Working Principle

TPS61003DGS operates by switching a transistor on and off to vary the output voltage while maintaining a constant output current to the load it is powering. The switch is cycled on and off at a rate determined by a control loop inside the regulator. When the switch is on, current flows through the switch, and when it is off, the switch is \'floating\' allowing the current to continue flowing. The frequency of the switch is used to set the output voltage and the amount of current being flowed. The output current can be adjusted by adjusting the duty cycle of the switch.

The TPS61003DGS operates in two modes, boost mode and buck mode. In boost mode, the switch is turned on when the input voltage is higher than the output voltage resulting in a current flow from input to output. In buck mode the switch is turned on when the input voltage is lower than the output voltage resulting in a current flow from output to input. By alternating between the two modes, an efficient DC-DC converter can be created. The output is regulated to the desired voltage with the help of a feedback loop.

The TPS61003DGS is a very efficient DC-DC converter, with an average efficiency of up to 95%. It is also very low emission, so it can be used in a wide range of applications without causing interference with other systems. The TPS61003DGS\'s low power, low cost, and efficient operation make it an ideal choice for those who need a versatile and reliable power source for their system.

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