Overview
The TPS2493PW, produced by Texas Instruments, is a positive high-voltage power-limiting hot swap controller designed to safely drive an external N-channel FET to control load current. This 14-pin device operates over a wide voltage range of 9-V to 80-V, making it versatile for various high-voltage applications. It features programmable power foldback protection, current limiting, and fault timers to ensure the external FET and the load are protected from overcurrent conditions. The TPS2493PW also includes an analog current monitor output, programmable overvoltage and undervoltage shutdown, and power-good indicators, enhancing its functionality in managing power feeds and interfacing with downstream DC-to-DC converters.
Key Specifications
| Parameter | Description |
|---|---|
| Operating Voltage | 9-V to 80-V |
| Package Type | TSSOP-14 |
| Number of Channels | 1 |
| Internal Switch(s) | No |
| High-Side Drive | For External N-FET |
| Programmable FET Power Limit | Yes |
| Programmable Load Current Limit | Yes |
| Programmable Fault Timer | Yes |
| Load Current Monitor Output | Analog |
| Power Good and Fault Outputs | Active Low |
| Enable/UV, OV Inputs | Yes |
| Latch or Auto Restart After Fault | Auto Restart (TPS2493) |
| Temperature Range | -40°C to 125°C |
Key Features
- Programmable power foldback protection to ensure the external FET operates within its safe operating area (SOA) during overload conditions.
- High-side drive for external N-channel FET.
- Programmable FET power limit and load current limit.
- Programmable fault timer.
- Analog current monitor output for external A/D converter sampling.
- Inrush current limiting and controlled load turn-on.
- Interfacing to downstream DC-to-DC converters and power feed protection.
- Programmable overvoltage and undervoltage shutdown.
- Power-good output for coordinating loads with inrush and fault indicator for over-current shutdown.
- Latch or auto restart after fault, with the TPS2493 featuring auto restart.
Applications
- Server Backplanes
- Storage Area Networks (SAN)
- Medical Systems
- Plug-in Modules
- Base Stations
Q & A
- What is the operating voltage range of the TPS2493PW?
The TPS2493PW operates over a voltage range of 9-V to 80-V. - What type of package does the TPS2493PW come in?
The TPS2493PW comes in a TSSOP-14 package. - Does the TPS2493PW have internal switches?
No, the TPS2493PW does not have internal switches. - What is the purpose of the high-side drive in the TPS2493PW?
The high-side drive is for controlling an external N-channel FET. - Can the FET power limit and load current limit be programmed in the TPS2493PW?
Yes, both the FET power limit and load current limit can be programmed. - What type of output does the load current monitor provide?
The load current monitor output is analog. - How does the TPS2493PW handle fault conditions?
The TPS2493PW features a programmable fault timer and can either latch off or auto restart after a fault, with the TPS2493 specifically featuring auto restart. - What are some common applications of the TPS2493PW?
Common applications include server backplanes, storage area networks (SAN), medical systems, plug-in modules, and base stations. - Does the TPS2493PW support power-good and fault indicators?
Yes, it includes power-good and fault outputs. - How does the TPS2493PW protect against overvoltage and undervoltage conditions?
The TPS2493PW features programmable overvoltage and undervoltage shutdown.
