TPS61240TDRVRQ1

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The TPS61240TDRVRQ1 is a single-output synchronous step-down DC-DC converter device with integrated high-sidel MOSFETs. It is designed to deliver up to 3A of output current from input voltages from 2.5V to 18V. This device offers high efficiency at low input/output voltages, accurate current limit and thermal shutdown protection. It operates over a wide range of frequencies from 200kHz to 2.2MHz, allowing the use of small and low cost inductors and capacitors. Additionally, the TPS61240TDRVRQ1 can be configured for Burst Mode operation to further reduce light load power consumption.

This device\'s application field falls into PMIC - Voltage Regulators - DC DC Switching Regulators. In these applications, the TPS61240TDRVRQ1 is typically used as part of a voltage conversion system, where it provides regulated output voltage with efficiency comparable to that of a linear regulator. It operates by using switch-mode power conversion, enabling it to convert input voltages much higher than the desired output voltage. The TPS61240TDRVRQ1 is able to maintain a regulated output voltage with minimal distortion even at a very light load.

The working principle of the TPS61240TDRVRQ1 involves using P-channel MOSFETs to alternately transfer energy between the input capacitor Cin and the output inductor Lout. This energy transfer can be controlled by varying the on time of the MOSFETs. First, the power switch is opened and energy stored in the input capacitor Cin is transferred to the output inductor Lout. Then, the power switch is closed and energy stored in the output inductor Lout is transferred back to the input capacitor Cin. This process is known as cycle-by-cycle current sensing and is repeated indefinitely until the required output voltage is reached.

The TPS61240TDRVRQ1 also provides several features to improve system performance, including integrated high-side MOSFETs which reduce the total system cost by eliminating the need for an external power switch, adjustable soft-start which eliminates input inrush current, and a dynamic voltage scaling function which allows for more efficient, multi-level voltage output. Additionally, the TPS61240TDRVRQ1 offers a wide operating frequency range from 200kHz to 2.2MHz, allowing for the use of small and low cost inductors and capacitors.

In summary, the TPS61240TDRVRQ1 is a single-output synchronous step-down DC-DC converter device with integrated high-side MOSFETs and a wide operating frequency range. It is an ideal solution for high efficiency and low cost voltage conversion applications due to its cycle-by-cycle current sensing, adjustable soft-start, high efficiency operation, and dynamic voltage scaling features.

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