TC1240ECHTR

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The TC1240ECHTR is a high-performance, cost-effective DC/DC switching regulator from Texas Instruments. This integrated switch provides a wide range of adjustable output of up to 36V, up to 1.3A peak current, and up to 13W of output power. The device supports an adjustable or external reference voltage, easy enable and shutdown, current limit and foldback, a wide temperature range of -40°C to +85°C, and a transconductance multiplier feedback architecture.

The TC1240ECHTR is widely used in applications such as automotive, computing, communications and industrial. It is suited for a wide range of applications from powering low voltage logic, to driving high current MOSFETs. This device also offers high efficiency due to its low-EMI, low-output-ripple, pulse-skipping and spread-spectrum capabilities.

The working principle of the TC1240ECHTR is based on the flyback topology. It takes a pulsed input voltage and converts it to an adjustable or fixed output voltage. It offers adjustable or external reference voltage, enable and shutdown, current limit and foldback, and a wide temperature range of -40°C to +85°C. The device also features an adjustable feedback network that provides an adjustable output voltage. The integral oscillator and synchronous rectifier greatly reduce no-load losses and input ripple current, thereby improving overall system efficiency.

The device has a high-side capacitor loop that generates a high frequency, continuous-duty cycle drive to the MOSFET switches. Depending on the output voltage, the capacitor loop will generate a clean square wave signal to drive the internal output power stage in order to achieve the desired output voltage. During the high-side switch on-period, the output voltage is determined by the voltage divider, feedback resistors and the current-adjusting transistors and is also monitored by the onboard error amplifier.

The TC1240ECHTR is an ideal solution for applications requiring high power densities and high efficiency. It is capable of performing a variety of duties, including step-up and step-down power conversion, as well as providing adjustable voltage regulation. The wide range of features and adjustable output voltage allow it to be easily implemented in a number of systems. The device is a cost-effective and reliable choice for a wide range of applications.

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