TPS53127PW

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TPS53127PW DC-DC switching controller is a device from Microchip that from its broad portfolio of voltage regulators and voltage supervisor products. This device is a synchronous controller that is specifically designed for cost-effective, highly efficient non-isolated point of load (POL) applications up to 15A. It is capable of making accurate output voltage tracking using a simple reference voltage. Ideal for cost-sensitive applications, the device helps to reduce total design and component count with its integrated FETs and provides increased system efficiency. It has a wide range of operating input voltage from 4.5V to 21V.

Features

• Integrated Gate Drivers Reduce Component Count and Increase Efficiency
• Integrated High-Side and Low-Side MOSFETs Reduce Output Inductance
• Accurate Input Voltage Monitoring
• Low Operating Current Utilizing Automatic Burst Mode Control
• High-Frequency Operation with Fast Transient Response
• Spread Spectrum Clocking (SSC)
• Industry-Leading Soft-Start/Soft-Stop Surge Protection
• Low-Battery Lockout and Power-On Reset

Application

The TPS53127PW DC-DC switching controller is suitable for a wide range of POL applications such as cellular base stations, DSL systems, load switches, digital cameras, tablets, laptops, TV/monitor/printer, PCI/PCIe expansion slots, and hard disk drives, just to name a few. It is also ideal for automotive and industrial applications.

How it works

Like all other DC-DC switching controllers, the TPS53127PW is designed to convert a DC input voltage with an adjustable output voltage. It has integrated low side and high-side MOSFETs that improve system efficiency while reducing external component count. The device works as follows.

When the power is turned on, an external reference voltage is applied to the FB pin. The device generates a control signal based on the reference voltage and a voltage across the inductor. This signal is used to control the output voltage by means of on and off control of the semiconductor switch. The switch is alternately on and off, which is synchronized with the output voltage, to control the output current and adjust the voltage to the desired programmed value.

The device also has functionality for low battery lockout, spread spectrum clocking, advanced external loop compensation, soft start/stop surge protection, soft stop surge protection, power good pin with power on reset, advanced thermal shutdown, and an integrated power switch.

Conclusion

The TPS53127PW DC-DC Switching Controller is a highly efficient device that is suitable for a wide range of POL applications and also helps reduce design cost by reducing component count and increasing system efficiency. Its multitude of features and wide operating input voltage range from 4.5V to 21V make it an ideal device for cost-sensitive applications.

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