TPS59124RGET Integrated Circuits (ICs)

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The Texas Instruments TPS59124RGET is a high current, programmable, and integrated buck controller that enables high efficiency, small footprint DC/DC solutions. It features pin selectable output current level (from 6 A to 12 A), internal soft-start, current fold back and output overvoltage protection. The device clock speed is adjustable through I2C with multiple options for DC/DC architecture. It is ideal for industrial, automotive and other high power applications, as well as for heat-sensitive and low profile/ handheld applications.

The TPS59124RGET is a DC/DC switching controller IC with a constant off-time architecture that enables high efficiency and fast transient response. It incorporates an internal 8-bit (256 times) voltage reference, allowing the output voltage to be accurately monitored and properly regulated. The device offers integrated buck, boost, and buck-boost configurations, each of them supporting up to 12 A of output current. Pin Selectable Current Limit and Smooth Transition between Output Current Levels, safety features such as Over Voltage Protection (OVP) and Over Temperature Protection (OTP) are also available.

The principle of operation of the TPS59124RGET can be divided into four main functional blocks: input section, control section, output section and power switch section. The input section includes the input voltage sensing circuit and the current sensing circuit. It monitors the input voltage and its attached load current to adjust the duty cycle of the power switch. The control section controls the on/off cycle of the power switch and compare the output voltage with a reference voltage to regulate the output with feedback control. The output section contains the output voltage sensing circuit and the output regulation circuit which regulates the output voltage. The power switch section consists of power MOSFETs, a gate drive circuit, a power FET driver and the switching control circuit.

The TPS59124RGET is ideal for applications where a high efficiency, high power density and fast response are required. It is suitable for wide range of input voltage, from 3V to 18V and output voltage, from 0.8V to 5V, making it applicable in a variety of industrial, automotive, heat sensitive and mobile applications. The on-chip I2C interface provides a user friendly way to change output voltage, current limit level and switching frequency. Moreover, the TPS59124RGET supports a wide range of output applications such as synchronous, non-dissipative and diode emulation buck converter, synchronous buck-boost, boost and SEPIC converters.

Overall, the TPS59124RGET from Texas Instruments is a high-performance, integrated buck controller that is ideal to use in a variety of high-power applications. It features internal soft-start, output overvoltage protection, pin selectable output current levels and on-chip I2C interface. With features such as its Constant Off-Time architecture and wide range of input/output voltage, it is capable of providing high efficiency, high power density and fast response.

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