TPS54910PWPRG4

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TPS54910PWPRG4 is a high-performance, ultra-low quiescent current synchronous buck regulator with power switch and integrated FET drivers. It is designed to deliver up to 5A of output current and accept input voltages from 4.5V to 5.5V. The device uses a proprietary control system which combines an internally-tuned current-mode pulse-width modulation (PWM) control and a low-noise voltage mode control loop for low EMI operation. The combination of these two controls allows for improved transient response and reduced output voltage ripple. The TPS54910PWPRG4 also includes an on-chip low impedance PowerGood indicator circuit, a selectable SoftStart timing circuit and an integrated FET thermal protection circuit.

TPS54910PWPRG4 is appropriate for applications such as mobile phones, laptop chargers, set-top boxes and other similar products where high efficiency and low noise operation across a wide input voltage range is desired. It can also be used in applications such as Bluetooth, USB, Serial ATA, Ethernet and OLED displays where space is at a premium since it packages in the TSSOP-16 package. The device integrates a fixed 5V internal LDO for powering the internal circuitry, eliminating the need for an external POR or bias supply.

The TPS54910PWPRG4 provides a wide array of features that give designers more flexibility when designing a power system. The device provides an adjustable output voltage range from 0.6V to 1.8V. The output voltage is programmed using an external resistor divider network. The device also utilizes a dual loop control system that proteins improved transient response and reduced output voltage ripple. The device also features an internal soft start circuitry which eliminates the inrush current that is traditionally associated with power up. This feature is particularly useful in battery powered applications.

The TPS54910PWPRG4 also features an integrated output over-voltage protection, output undervoltage protection, internal FET thermal protection, and power good flag which provide the designer with greater flexibility and protection in the event of a system fault. The TPS54910PWPRG4 incorporates an internally-tuned current mode PWM control, which enables a wide loop bandwidth for fast transient response. The PWM control also includes an auto-demagnetization function eliminating the need for an external soft-start circuit.

The device also feature integrated high side and low side N-channel MOSFETs to provide efficient conversion, along with integrated synchronous FET drivers and a selectable under-voltage lockout function. With all these features, the TPS54910PWPRG4 can provide an efficient and reliable solution in applications requiring low noise and high efficiency power conversion.

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