TPS54140ADRCR

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Texas Instruments\' TPS54140ADRCR is a DC-DC switching regulator specifically designed for applications requiring high efficiency DC-DC voltage conversion. This device is especially well-suited for energy-efficient consumer products that require low standby power consumption yet high peak power performance. Offering amazing design flexibility and versatility, the TPS54140ADRCR allows designers to quickly develop cost-effective switch mode power supplies. It offers a wide operating temperature range of -40°C to +85°C, high input voltage range of 6 V to 40 V and adjustable output voltage range of 0.8 V to 6 V.

The TPS54140ADRCR incorporates a synchronous buck architecture, current-mode control and cycle-by-cycle current limiting capability for excellent line and load regulation. Use of an external synchronizing element ensures that this regulator can support an extremely wide range of input frequencies, from 500kHz up to 2.2 MHz. Advanced features include adjustable soft-start, adjustable frequency hopping, thermal shutdown, remote shutdown and power-good output.

Application Field

The device is widely used in active voltage clamp Li-ion battery charger systems and SSD power management systems. It is used for intermediate bus conversion and for improved efficiency of many power systems. Its wide input voltage range and adjustable output voltage enable seamless designing and testing of new products. It also provides high-performance, low-noise power solutions for digital households, consumer devices and microprocessors.

This voltage regulator is perfect for consumer products such as notebooks, tablets, netbooks, and other small form-factor devices. Its extremely low quiescent current makes it an ideal fit for the demands of energy-efficient products. Additionally, it is perfect for many industrial applications, such as artificial intelligence and image processing. The product is also ideal for applications requiring low EMI noise and is compliant with the latest EMI regulations (IEC/EN 61000-3-2 class B and IEC/EN 61000-4-2).

Working Principle

The TPS54140ADRCR is a synchronous buck current-mode DC-DC switching regulator. This means that the switching of the input voltage to the output voltage is done synchronously and the operating frequency is determined by an external synchronous element. It uses pulse-width modulation (PWM) to achieve regulation and supports a wide operating range of input voltages, from 6V to 40V.

The voltage regulator circuit has an internal P-channel MOSFET to regulate the power converter. Power is first transferred by the P-channel MOSFET from the input voltage to an inductor and then through an output diode to the output voltage. As the current through the inductor expands and contracts with the switching of the MOSFET, it produces a voltage difference between the input and output, which is regulated by a PWM-controlled error amplifier. This error amplifier compares the target output voltage and the regulated output voltage to create an error signal which is used to drive the P-channel MOSFET.

The TPS54140ADRCR also incorporates other features including a power-good output, adjustable soft-start, adjustable frequency hopping, thermal shutdown, and remote shutdown. The device supports a wide operating temperature range (from -40°C to +85°C) and a wide input voltage range (from 6V to 40V), offering designers more flexibility and design freedom.

The TPS54140ADRCR is a highly efficient and versatile DC-DC switching voltage regulator. With its wide input voltage range and adjustable output voltage, it offers excellent design flexibility and versatility. The device is perfectly suited for and well-suited for energy-efficient consumer products. Its robust features, such as adjustable soft-start, adjustable frequency hopping, thermal shutdown, and remote shutdown make it a great choice for many industrial applications. This voltage regulator is an excellent choice for applications requiring high efficiency, low EMI noise and advanced features.

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