TUSB2551PWR Integrated Circuits (ICs)

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The TUSB2551Pwr is an integrated MOSFET low-side switch and system-level power management controller with an integrated digital logic interface. It is the first of a new family of products from TI that bridges the digital and power worlds to enable simpler, more intelligent solutions that more cost-effectively manage system power. Advanced features such as Power Management Interrupt (PMI) and surge current control are supported in the TUSB2551Pwr to enable a range of system-level features.

As an interface-level product, TUSB2551Pwr\'s main application fields include switching power and controlling the power supply of consumer electronics, automotive electronics, telecom and communications, computers, portable electronic devices, and industrial instrumentation and control applications. Special functions such as surge protection, overload protection, and short-circuit protection are also supported.

Working Principle

The TUSB2551Pwr works by connecting a supply voltage and ground to the gate of an integrated power MOSFET (Metal-Oxide Semiconductor Field-Effect Transistor). When a logic high is applied to the EN (enable) input pin, the integrated MOSFET turns on and a low impedance path is created between the supply and ground pins. When the EN input pin is driven low, the MOSFET automatically turns off.

In addition to on/off control, the TUSB2551Pwr provides several features that can help improve power efficiency, reduce power loss, and enhance system reliability. It features a soft-start function that reduces inrush current and can be used in power supply applications. Special features like PMI and surge current control make the TUSB2551Pwr ideal for automotive and industrial applications.

The TUSB2551Pwr also enables additional power-saving features in the customer’s product such as auto-shutoff when no activity is detected for a certain period of time, thermal overload protection, overcurrent protection, and overvoltage protection. All these features can be controlled through the logic interface.

Conclusion

The TUSB2551Pwr is a new type of integrated circuit that bridges the gap between the digital and power worlds. It provides a low-side MOSFET switch as well as an enhanced digital logic interface that enables advanced features such as PMI and surge current control. Its features make it ideal for switching power, controlling the power supply of consumer electronics, automotive electronics, communications, computers, and portable electronic devices.

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