TPS40304DRCR Integrated Circuits (ICs)

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TPS40304DRCR is a switching buck DC-DC controller specifically designed for automotive and industrial applications. This buck controller is suitable for boost, buck or buck-boost applications, where output voltage cannot exceed the input voltage for proper operation. It can provide over-current protection, under-voltage protection as well as over-temperature protection for power converters.

Application Field of TPS40304DRCR

The TPS40304DRCR is specifically designed for automotive and industrial applications such as automotive infotainment systems, automotive ACC systems, advanced driver assistance systems, HVAC systems, and industrial motion control systems. This buck controller provides excellent performance in terms of switching frequency accuracy and efficiency. It has a variable switching frequency range up to 4.5MHz, allowing optimum design flexibility. Additionally, its output current precisely follows the reference voltage and it also provides adjustable phase-shift compensation. Moreover, its integrated soft-start feature limits inrush current, thus easing the stress on other components.

Working Principle of TPS40304DRCR

The TPS40304DRCR works with a Pulse Width Modulation (PWM) technique. It accepts an input voltage from any source, with the optimum operating range being 6V – 42V for Automotive applications and 4.99V – 70V for Industrial applications. The controller modulates the pulse width as a function of the voltage difference between the output voltage and the reference voltage. This difference is used to adjust the duty cycle of the PWM signal, so that the output current is maintained in line with the reference voltage. In case any fault condition is detected, the fault output pin is used to signal the MOSFET drivers to disable the MOSFETs and hold the converter in a safe condition.

The controller also integrates a programmable frequency limit, which is used to reduce EMI and acoustic noise. Additionally, it integrates several protection functions like over-current protection, under-voltage protection as well as over-temperature protection. This makes it an ideal choice for automotive and industrial applications.

Conclusion

TPS40304DRCR is a buck switching DC-DC controller specifically designed for automotive and industrial applications. It is suitable for boost, buck or buck-boost applications, and it can provide excellent performance in terms of switching frequency accuracy and efficiency. Additionally, it has integrated protection features like over-current protection, under-voltage protection as well as over-temperature protection, making it an ideal choice for automotive and industrial applications.

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