TPS2320IDR

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TPS2320IDR is a low-side Hot Swap controller. It is a regenerative circuit breaker dedicated to board protection in industrial applications. It is used to control the inrush current of the power components in equipment, such as Field Programmable Gate Arrays (FPGAs). The device limits the current overload in-rush period to protect circuit boards. The TPS2320IDR provides both power-on reset and conduction current limit functions.

The TPS2320IDR is a fixed regulator with a specifically-developed technique to interface power circuits up to 16.5A. It features a low quiescent current and fast turn-off that minimizes power loss without compromising reliability or performance. Its SOT-23 package package and 200mV internal reference voltage provide a compact, reliable Hot Swap solution for board level protection.

When the load current reaches w the current limit threshold, the TPS2320IDR engages and disables the supply to the load. The voltage drops to approximately 0.21V above the dropout voltage, depending on the external resistor used. The IC will also isolate the load and reset itself when the system power is disconnected.

The use of TPS2320IDR in Hot Swap application is the ability to limit inrush current and protect sensitive circuits from power-on damage. It enables remote control of system on and off functions and eliminates the need for manual power switches. The device also ensures a fast turn-on and turn-off of the load current, making it suitable for a range of applications where instantaneous current protection is required.

The working principle of the TPS2320IDR relies on the use of an internal comparator to sense the voltage across a 0.2 Ohm sense resistor and compare it with an internal reference voltage. When the voltage increases above the reference voltage, the device turns on and the MOSFET is energized, resulting in a low resistance path to ground. This causes the current to the load to be limited. The device then shuts off when the current falls below the set current limit.

The TPS2320IDR is typically used in industrial applications such as power distribution, system power back-up, security systems and other applications where board level protection is needed. It is used to control the inrush current of the power components in equipment, such as Field Programmable Gate Arrays (FPGAs) and is available as a low-side Hot Swap controller in a SOT-23 package.

In summary, the TPS2320IDR from Texas Instruments is a low-side Hot Swap controller. Its main application field is board level protection for industrial applications. Its working principle relies on the use of an internal comparator to sense the voltage across a 0.2 Ohm sense resistor and compare it with an internal reference voltage. When the voltage increase above the reference voltage, the device turns on and the MOSFET is energized, resulting in a low resistance path to ground and conducting the current below the set current limit. It provides both power-on reset and conduction current limit functions.

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