TPS53353DQPT

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TPS53353DQPT is a DC-DC voltage regulator integrated circuit (IC) designed by Texas Instruments to deliver faster, lighter and smaller power solutions with improved power density. It belongs to the family of Power Management IC (PMIC) and is a DC DC switching regulator, which makes the device suitable for applications that require the utmost in efficiency and power delivery.

The TPS53353DQPT provides fixed-frequency internal synchronous rectification and is controlled by a pulse-width modulator. It is specifically designed to support high current load applications, including computing and networking applications.

This IC supports many features suitable for a wide range of applications, such as non-linear load step response, dynamic voltage scaling, soft-start, programmable overcurrent protection (OCP), and many more. Additionally, the device’s high-side switch architecture enables it to support industrial and automotive applications for power designs where space is at a premium.

The operating temperature range for the TPS53353DQPT is -40 °C to +125 °C. Its operating voltage ranges from 6.5 V to 25.5 V, with a maximum output voltage of 24 V. This IC also supports a maximum output current of 15 A.

The TPS53353DQPT works by providing two simultaneous regulated outputs. It consists of an error amplifier, a voltage reference, a programmable oscillator, an N-channel MOSFET, and a P-channel MOSFET. The error amplifier compares the output voltage with the internal reference voltage to provide a feedback signal. This signal is then provided to the pulse-width modulator, which controls the duty cycle of the two MOSFETs with a variable frequency.

The duty cycle of the MOSFETs determines the output voltage of the TPS53353DQPT, which will be determined by the resistive divider ratio of the external resistors connected to the device. When the P-channel MOSFET is in the on-state, current flows from the input voltage to the output of the device, and a positive voltage is maintained at the switch node. The N-channel MOSFET is then turned on which will cause current to flow into the inductor and then out through the output capacitor. The inductor and capacitor form a “filter” which results in a steady output voltage at the output of the device.

The TPS53353DQPT is optimized to deliver high current power solutions in a wide range of applications, including home appliances, automotive, industrial, and more. Its features, such as its flexibility and small package size, make it suitable for demanding edge-of-network applications, as well as more traditional point-of-load applications.

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