TPS54061DRBT Integrated Circuits (ICs)

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TPS54061DRBT is a device from Texas Instruments’ wide range of integrated voltage regulators. It is a high-efficiency, step-down DC/DC converter with a wide input voltage range of 8 V to 45 V. Power losses are minimized in a variety of applications with a switching frequency of up to 2.2 MHz, a high peak-current limit of up to 1.1 A, and an 85°C operating temperature rating. This device is widely used in applications such as automotive near-field vehicle communication, medical and industrial devices, and e-mobiility. The following sections provide an overview of the applications, features and working principle of the TPS54061DRBT.

Applications

The TPS54061DRBT can be used in systems where efficient power conversion is essential. Its wide input voltage range allows it to be used in automotive, industrial and medical systems. This voltage regulator can be used as an isolated point-of-load regulator, an adjustable isolated output polarity converter, and a wide-range-to-fixed voltage regulator.

• Automotive near-field vehicle communication systems
• Medical and industrial devices
• Battery powered equipment
• Wireless power transfer equipment
• Solar systems
• Consumer electronics
• E-mobility

Features

The TPS54061DRBT features an integrated high-side N-channel MOSFET, low quiescent current mode, output disconnect, integrated fast-discharge circuitry, programmable soft-start pin, adjustable output voltage, and fast-transient response. It also has an adjustable operating frequency up to 2.2 MHz and peak-current limit of up to 1.1 A.

The device is available in a thermally enhanced 14-lead TSSOP package that requires minimal board occupancy. It has a wide operating temperature range of -40°C to 175°C, over-temperature protection, under-voltage lockout, and over-current protection for added safety. Additionally, the TPS54061DRBT has a high standby current efficiency making it ideal for high efficiency applications.

Working Principle

The TPS54061DRBT is a step-down DC/DC converter. It works by converting an input voltage into a lower output voltage. The converter uses a high-side N-channel MOSFET and low quiescent current mode for efficient power conversion. The device has a wide input voltage range of 8 V to 45 V and an adjustable operating frequency of up to 2.2 MHz. The peak-current limit of up to 1.1 A allows for minimizing power losses in a variety of applications.

The converter works by combining a time-out control and current-mode control. A slow-start circuit is implemented to eliminate any in-rush current when the device is first enabled. The control circuit senses the output voltage and adjusts the switching frequency and the duty cycle of the MOSFET switch for efficient and stable operation. The output voltage is further regulated by an on-board voltage reference.

The TPS54061DRBT also features a high-accuracy voltage feedback loop and adjustable output voltage range of 0.8 V to 5 V. The device is also equipped with output disconnect, integrated fast-discharge circuitry, and programmable soft-start pin for reducing inrush current. The high-side N-channel MOSFET allows for efficient power conversion while providing the lowest possible switching losses.

The TPS54061DRBT is a high-efficiency, step-down DC/DC converter with a wide input voltage range of 8 V to 45 V, making it suitable for a wide range of applications. Its high-side N-channel MOSFET, low quiescent current mode, adjustable output voltage, and programmable soft-start pin make it an ideal choice for efficient power conversion.

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