Overview
The TPS2420RSAT from Texas Instruments is a highly integrated 5-A, 20-V hot-swap controller designed to protect and manage loads in various power supply applications. This device features an internal 30-mΩ pass MOSFET, enabling efficient power delivery and robust protection against overcurrent and fault conditions. The TPS2420RSAT is particularly suited for applications requiring hot-swapping, such as in RAID arrays, telecommunications, disk drives, SSDs, and plug-in circuit boards.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 3 V to 18 V |
| Output Current | Up to 5 A |
| Pass MOSFET Resistance | 30 mΩ |
| Bus Operation Voltage | Up to 20 V |
| Junction Temperature Range | –40°C to 125°C |
| Package Type | 16-pin 4 mm × 4 mm QFN |
| Fault Current Threshold | Programmable |
| Current Limit Threshold | Programmable |
| Fault Timer | Programmable |
Key Features
- Integrated 30-mΩ pass MOSFET for efficient power delivery
- Up to 20-V bus operation
- Programmable fault current and hard current-limit thresholds
- Programmable fault timer
- Internal MOSFET power limiting foldback
- Latching and auto-retry operation modes
- Analog current monitor output (IMON)
- Power good output (PG) and fault output indicator (FLT)
- Thermal shutdown protection
Applications
- RAID arrays
- Telecommunications
- Disk drives
- SSDs
- Plug-in circuit boards
- PCIe and fan control systems
Q & A
- What is the input voltage range of the TPS2420RSAT?
The input voltage range is from 3 V to 18 V. - What is the maximum output current of the TPS2420RSAT?
The maximum output current is up to 5 A. - What is the resistance of the internal pass MOSFET?
The internal pass MOSFET has a resistance of 30 mΩ. - Can the fault current and current limit thresholds be programmed?
Yes, both the fault current and current limit thresholds are programmable. - What are the operating modes for fault handling?
The device can operate in either latching or auto-retry modes. - Does the TPS2420RSAT provide thermal protection?
Yes, it includes thermal shutdown protection. - How is the fault timer programmed?
The fault timer is programmed using a capacitor connected to the CT pin. - What is the purpose of the IMON output?
The IMON output provides a scaled analog representation of the load current. - What does the PG output indicate?
The PG output indicates that the output voltage is within 300 mV of the input voltage and there is no fault condition. - What is the package type of the TPS2420RSAT?
The package type is a 16-pin 4 mm × 4 mm QFN.
