TPS40132RHBT Integrated Circuits (ICs)

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The TPS40132RHBT is a high performance integrated buck DC/DC converter with integrated power FETs. It is a flexible, robust and cost-effective DC/DC switching controller with a wide input voltage range, extended battery life and minimal part count. The device is a complete system solution for providing regulated voltages from a single supply source. This application note describes the application field and working principle of the TPS40132RHBT.

Application Field

The TPS40132RHBT is an ideal solution for the power system design of DC/DC switching converter applications that use battery or non-battery supply sources. It is suitable for efficient and quick battery-based applications such as industrial, mobile, and consumer products. The integrated FET driver also helps to reduce the overall part count, cost, and size. The TPS40132RHBT also provides a wide input voltage range of 2.5V to 28V, with an output voltage range of 0.8V to 6V, and can handle continuous loads up to 10A. It is suited for applications such as Li-ion battery-powered personal computers, notebooks, tablets, and PDAs, laptop adapters, adapters for automotive, industrial, medical and telecom applications, as well as other DC/DC equipment. The TPS40132RHBT also features minimum power consumption and improved EMI/EMC characteristics.

Working Principle

The TPS40132RHBT has an integrated MOSFET driver that is useful for all synchronous buck DC/DC controller applications. This is done by using the integrated power MOSFET to switch current from the load. The current is then supplied to the input, which then drives the power MOSFET and provides the output voltage. This can also be done in a single stage, by using the buck transistor, or in a multi-stage, using multiple transistors. The TPS40132RHBT also features a peak current mode control, which ensures fast transient response, accurate output voltage regulation and peak current limit.

The TPS40132RHBT also features a high-precision current-mode controller with low line and load regulation, providing excellent line and load transient response. The controller also features a wide range of adjustable loop compensation with independent control of pre-, over-, and under-voltage detect and enable. In addition, there is an enable/disable delay to enable and disable the device, which allows for improved efficiency.

The TPS40132RHBT also features a synchronous rectification control system, which is implemented using the PWM signal to synchronize the turn on and turn off of the integrated power MOSFET. The integrated rectification system also eliminates the need for additional components and reduces the component count and cost.

Overall, the TPS40132RHBT is an ideal solution for DC/DC switching converter applications, with a wide input voltage range, extended battery life, and minimal part count. The device also features high-precision current-mode control and a synchronous rectification control system, providing fast transient response and accurate output voltage regulation.

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