TPS54316QPWPRQ1

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PMIC - Voltage Regulators - DC DC Switching Regulators

TheTPS54316QPWPRQ1 is a high performance, low quiescent current, 1.2MHz current mode synchronous buck DC/DC converter with integrated PWM/PFM controller, power switches and 5V voltage regulator. The device requires no external compensation, allowing designers to reduce design time, board space and cost.

Application field

Since theTPS54316QPWPRQ1 is able to provide a wide output range, it is suited for a wide range of applications. Mobile communication systems, smart phones, digital cameras, digital musical instruments, portable audio and industrial equipment may benefit from the device\'s wide regulated output voltage and current capabilities. The TPS54316QPWPRQ1\'s low quiescent current and low output ripple makes it especially suitable for power supplies of battery-backed applications. At light loads, the device enters a low quiescent current PFM mode and seamlessly transitions to PWM when required to maintain regulation.

Working Principle

TheTPS54316QPWPRQ1 works in a two-stage bridgeless PFC (Push-pull Flyback), synchronous buck topology. The first stage works as a standard bridgeless PFC, effectively rectifying AC input voltage to DC. This DC input is then regulated by the synchronous buck converter which produces a regulated DC output voltage. The integrated PWM/PFM controller regulates the output voltage by modulating the switching of the low forward conduction loss switched used in the synchronous buck converter. A reference voltage is connected to the PWM/PFM controller which determines the desired output voltage. The device also features an on-board 5V voltage regulator which can be used to power an internal control circuitry.

The TPS54316QPWPRQ1 features a wide input voltage range of 3.5V to 28V and has a programmable output voltage range of 0.8V to 6V. It has a maximum load current of 2.3A and a peak efficiency of 94%, resulting in high power conversion efficiency for a wide range of applications. The device also has a wide operating temperature range of -40°C to +85°C and can withstand a surge up to 60V.

The device also features integrated power switches that reduce EMI, reduce the external component count and minimize the requirements for the PCB area. The TPS54316QPWPRQ1 also features a soft-start circuit which reduces the inrush current, making it suitable for systems with a low input voltage. The device also includes an adjustable over-temperature protection (OTP) circuit which can be used to protect the device from excessive high temperature.

The TPS54316QPWPRQ1 also has an integrated 5V voltage regulator which can be used to power an internal control circuitry. It is also available in a wide variety of packages such as TSSOP-16, VQFN-36 and TDFN-6.

In conclusion, the TPS54316QPWPRQ1 is a high performance, low quiescent current, 1.2MHz current mode synchronous buck DC/DC converter with integrated PWM/PFM controller, power switches and 5V voltage regulator. The device requires no external compensation, allowing designers to reduce design time, board space and cost. It is suited for a wide range of applications including mobile communication systems, smart phones, digital cameras, digital musical instruments, portable audio and industrial equipment.

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