TPS65920A2ZCH

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Introduction

TPS65920A2ZCH is a Power Management Integrated Circuit specially designed for power management, especially for small form factor of mobile systems. This IC is especially beneficial for those who need to build a power supply application in a very limited space by providing the solutions for power supply design, power sequencing and monitoring the system. In this article, we will discuss the application field and working principle of this IC.

Application Field

TPS65920A2ZCH is specified for voltage and current sense applications, as well as for a battery charger and PMIC application. The IC is suitable for automotive, consumer and industrial applications. Some of the features of this product are:

• 3.3V and 5V power supply components
• 2-phase step-down converter with current mode
• High efficiency and high power density
• Low RDS(on) MOSFETs
• Adjustable and fixed voltage regulation
• 2-phase step-up converter
• LDO regulators (also can work as low noise regulators)
• Over-voltage protection (OVP) and over-current protection (OCP)
• Control and monitoring for 4 linear regulators

In addition, TPS65920A2ZCH can offer manual and/or auto-configuration for its OVP, OCP and soft-start settings, as well as its adjustable clock divider rate.

Working Principle

TPS65920A2ZCH combines the best of both analog and digital power supply solutions to provide a powerful PMIC. It uses an adaptive loop feedback system to ensure good load transient response. Its integrated voltage and current sense features help it to monitor the power supply rail current and voltage under transient conditions.

A built-in power supply sequencing controller is also provided to help keep the system power supply stable by sequencing between the 5V, 3.3V, and 1.8V power supplies. The sequencing process can be started manually or automatically. Additionally, some thermal protection settings will help protect the overall system from overheating.

The integrated power monitoring features also help keep track of the current flow on its power supply rail, while the adjustable and fixed voltage regulation helps to maintain an even output voltage. In addition, the 2-phase step-down converter helps provide efficient and robust power delivery, while the 2-phase step-up converter helps generate high peak loads.

Conclusion

TPS65920A2ZCH is an ideal power management solution for small form factor mobile systems. Its combination of analog and digital power supply solutions helps simplify the design and provides a highly efficient system. It also provides robust power delivery, power monitoring and thermal protection options. The IC is suitable for many applications in automotive, consumer and industrial fields.

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