TPS54900PWRG4

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Texas Instruments’ TPS54900PWRG4 is a PMIC (power management IC) that provides a high-frequency DC/DC converter with integrated voltage regulation circuit and level shifters for wide range, low-voltage input supply voltage systems. It is optimized for use in applications requiring a light, cost-effective solution for wide input voltage range and high accuracy. This device is especially suitable for automotive, industrial, and consumer applications. It features a wide voltage range, low quiescent current, low dropout voltage, high-speed current control, and high-efficiency. It also offers high level of immunity to transients, EMI/RFI, and other environmental noise sources.

The TPS54900PWRG4 is a single-phase, synchronous step-down, DC/DC switching regulator. It is a cost-effective, low-voltage solution for applications such as automotive and industrial, as well as consumer, requiring wide input voltage range (4 V to 40 V). It uses an external power MOSFET to drive a non-inverting Buck converter and provides high efficiency with low external component count. The device also utilizes a built-in voltage regulation feature to reduce overall system power and cost.

The TPS54900PWRG4 DC/DC switching regulator is designed to operate over a wide input voltage range and to provide a regulated output voltage that is compatible with down to 0.6V range of SOCs. The device integrates four main blocks – a main power stage with high-frequency PWM controller, oscillator, feedback network, and protection circuitry. The main power stage consists of an external P-channel power MOSFET combined with the current sense resistor and an auxiliary N-Channel MOSFET to provide a regulated voltage. The built-in current sense circuit is used to measure the current of the main switch, which is compared to the external current set point for precise output voltage regulation.

The operating frequency of the TPS54900PWRG4 can be configured from 200KHz to 1MHz through the OTFECT pin, enabling the design to take advantage of a wide range of input and output conditions and application requirements. The device can provide up to 2A of current without additional inductors or bulky heatsinks, and it offers high efficiency over a wide range of load conditions. An adaptive operation recovery feature ensures robust operation by automatically recovering from faults such as overvoltage, undervoltage, and overtemperature.

Since the output power is synchronized to the input voltage, the TPS54900PWRG4 can be used in applications requiring full output power at low input voltage. For example, an automotive system that could require full performance over the entire supply voltage range. This device is designed to be EMI/RFI-compliant, eliminating the need for external filtering components while providing optimal efficiency and performance. Its small size and low component count also make it ideal for space-constrained designs.

The TPS54900PWRG4 is a reliable and cost-effective DC/DC converter for a wide range of applications such as automotive, industrial, and consumer. With its wide voltage range, high-speed current control, and low quiescent current it is the ideal solution for high-performance, power-efficient designs. The device also offers an array of protection features and is EMI/RFI-compliant, making it a great choice for applications that require compact size, low cost, and high efficiency.

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