TPS2481PW

Programmable Features:	Current Limit, Fault Timeout
Base Part Number:	TPS2481
Feature Pins:	EN, PG, PROG, TIMER
Supplier Device Package:	20-TSSOP
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Current - Supply:	1mA
Operating Temperature:	-40°C ~ 125°C
Current - Output (Max):	--
Voltage - Supply:	9 V ~ 80 V
Series:	--
Features:	Auto Retry, I²C, UVLO
Applications:	General Purpose
Internal Switch(s):	No
Number of Channels:	1
Type:	Hot Swap Controller, Monitor
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tube

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PMIC - Hot Swap Controllers: TPS2481PW Application Field and Working Principle

The TPS2481PW is a power management integrated circuit (PMIC) developed by Texas Instruments. It is a member of TI\'s PowerWise Hot Swap Controllers series and is mainly used for power monitoring and providing hot plug capability in servers and storage systems. The TPS2481PW allows users to connect and disconnect power supplies to devices under load, while protecting the system and the connected devices. In this article, we will discuss the application field and working principle of the TPS2481PW.

Application Field

The TPS2481PW PMIC is designed to be used in systems that require hot swapping of power supplies and efficient power protection. This can include a variety of equipment such as systems containing RAID cards and Hard Disk Drives, as well as power systems used in telecommunications and military systems.The TPS2481PW provides efficient and reliable input over-voltage protection (OVP) and is able to protect against a wide range of transient voltages. It also provides output overload and short-circuit protection as well as operational temperature monitoring and recording features. These features allow the TPS2481PW to be a great device for powering or monitoring high power equipment such as servers or storage systems.

Working Principle

The TPS2481PW is based on a highly-integrated, hot swap power controller. Using a combination of linear regulators and switched-mode converters, the TPS2481PW is able to provide a regulated power supply over a wide input voltage range. The TPS2481PW also provides over-voltage protection, overload protection, and short-circuit protection to ensure the safety of the system and its connected devices.The TPS2481PW uses a constant off-time topology to regulate the output voltage. A high-side N-channel MOSFET switch is used to supply the output voltage, while a comparator and voltage reference are used to compare the output voltage to the desired value. The internal error amplifier then adjusts the off-time counter to maintain the output voltage.The TPS2481PW also includes an over-voltage protection (OVP) circuit to protect against output or input over-voltages. The OVP circuit uses an adjustable trip point to indicate an over-voltage condition. Once the trip point is exceeded, the output is disabled and the system is protected from further damage.

Conclusion

The TPS2481PW is a powerful and reliable PMIC that can be used for hot swapping power supplies and providing efficient power protection for a variety of systems. With its adjustable trip point OVP circuit, the TPS2481PW is able to provide reliable protection against output and input over-voltages. It is an ideal solution for powering or monitoring high power equipment such as servers or storage systems.

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