TPS65176RHDT

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TPS65176RHDT Application Field and Working Principle

The TPS65176RHDT is a Type-TC high-efficiency USB-OTG (On-The-Go) Power Management Integrated Circuit (PMIC). This power management IC consists of several functional blocks and is dedicated for USB2.0 OTG devices, such as smart phones, tablets and other portable device.

Currently, the benefits of USB2.0 OTG\'s diverse applications and insufficient power resources are bringing increasingly strict requirements for power solutions, especially for safety, stability and efficiency. The TPS65176RHDT is the ideal PMIC solution to meet such stringent requirements.

Application Field

The TPS65176RHDT can be used in various applications, such as smartphones, tablets, and portable devices. Smartphone and tablet applications: dual-cell/triple-Cell Li-ion batteries; STBY/SNOOZE mode; Forced OTG mode. Portable device applications: dual-cell Li-ion batteries; Under-voltage lockouts; Forced OTG mode.

These applications are mainly used to draw power from the battery or other power sources to the USB-OTG device. The application can be used for a variety of mobile devices, and fits into a two-cell battery architecture, either in stand-by mode or snooze mode.

Working Principle

The TPS65176RHDT consists of four main functional blocks, namely the DC-DC converter, battery charger, voltage regulator, and I/O level shifter. Each of these feature integrated, independent controls and communication, which allow for optimal efficiency, improved system integration and multiple-solution support.

The DC-DC converter is a power-conversion module designed to convert input battery voltages up to 6V to an adjustable output voltage, while providing high efficiency and low noise. The built-in low leakage auto-sleep function enhances system standby efficiency.

The battery charger is integrated with a high current bootstrap switch and low power consumption functions, which help optimize system power consumption. The battery charger also supports Forced OTG mode and monitors the battery voltage, automatically switching between stand-by and snooze mode.

The voltage regulator is a precision low dropout (LDO) type that provides low output noise and low power consumption. The LDO is a regulated voltage cascaded power supply, providing up to 1.2V output for supplying the microcontroller. It also can be configured for a negative output, allowing for compatibility with modules such as DTV and HDMI.

The I/O level shifter is an integrated level shifter, providing a high-impedance state from 0V to 6V. It also provides temperature protection, dedicated diode protection and surge spike protection.

Conclusion

In conclusion, the TPS65176RHDT is an ideal PMIC solution that meets stringent power requirements. It is dedicated for USB OTG devices, such as smartphones, tablets and other portable devices. This power management IC interacts with other components, such as the DC-DC converter, battery charger, and I/O level shifter, to provide excellent solutions in meeting USB-OTG power requirements.

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