Overview
The TPS25944ARVCR from Texas Instruments is a highly integrated eFuse Power MUX designed for robust power management in various applications. This device features a wide operating voltage range of 2.7 V to 18 V, with a maximum voltage of 20 V, making it suitable for controlling many popular DC bus voltages. The TPS25944ARVCR is equipped with back-to-back FETs, providing bidirectional current control, which is ideal for power muxing and systems with multiple power sources. It offers a comprehensive set of protection functions, including overvoltage, undervoltage, overcurrent, and reverse current blocking, ensuring reliable operation and protection of the load, source, and the device itself.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2.7 V to 18 V | V |
| Maximum Operating Voltage | 20 V | V |
| On-Resistance (RON) | 42 mΩ (Typical) | mΩ |
| Adjustable Current Limit | 0.6 A to 5.3 A (±8%) | A |
| Current Indicator Output (IMON) | ±8% | % |
| Operating Quiescent Current (IQ) | 200 µA (Typical) | µA |
| Disabled Quiescent Current (IQ) | 15 µA (Typical) | µA |
| Overvoltage and Undervoltage Thresholds | ±2% | % |
| Junction Temperature Range | -40°C to +125°C | °C |
| Package Type | WQFN (RVC) 20-Pin | - |
Key Features
- Wide Operating Voltage Range: 2.7 V to 18 V, with a maximum voltage of 20 V.
- Low On-Resistance: 42 mΩ (Typical).
- Adjustable Current Limit: 0.6 A to 5.3 A (±8%).
- Current Indicator Output: IMON with ±8% accuracy.
- Low Quiescent Current: 200 µA (Typical) in operating mode and 15 µA (Typical) in disabled mode.
- Programmable Protection Features: Overvoltage, undervoltage, overcurrent, and dV/dt control.
- Reverse Current Blocking: True reverse blocking when V(IN) < (V(OUT) - 10 mV).
- Power Good and Fault Outputs: PGOOD and FLT outputs for system status monitoring.
- Overcurrent Fault Response Options: I(LIMIT) with thermal shutdown (TPS25942) or 4 ms fault timer then shutoff (TPS25944).
- UL Certifications: UL 2367 Recognized and UL60950 safe during single point failure.
Applications
- Power Path Management: Ideal for managing power paths in systems with multiple power sources.
- Redundant Power Supply Systems: Ensures reliable operation in redundant power supply configurations.
- PCIe Cards, NICs, and RAID Systems: Suitable for use in various computer peripherals and storage systems.
- Main/Auxiliary Supply Priority Control: Can assign priority using the FLT and DMODE pins.
Q & A
- What is the operating voltage range of the TPS25944ARVCR?
The operating voltage range is 2.7 V to 18 V, with a maximum voltage of 20 V.
- What is the typical on-resistance (RON) of the TPS25944ARVCR?
The typical on-resistance is 42 mΩ.
- What is the adjustable current limit range of the TPS25944ARVCR?
The adjustable current limit range is 0.6 A to 5.3 A (±8%).
- Does the TPS25944ARVCR have reverse current blocking capability?
Yes, it provides true reverse blocking when V(IN) < (V(OUT) - 10 mV).
- What are the overcurrent fault response options for the TPS25944ARVCR?
The options include I(LIMIT) with thermal shutdown (TPS25942) or a 4 ms fault timer then shutoff (TPS25944).
- What are the UL certifications for the TPS25944ARVCR?
The device is UL 2367 Recognized and UL60950 safe during single point failure.
- What is the junction temperature range of the TPS25944ARVCR?
The junction temperature range is -40°C to +125°C.
- What package type is the TPS25944ARVCR available in?
The device is available in a WQFN (RVC) 20-Pin package.
- Does the TPS25944ARVCR have power good and fault outputs?
Yes, it provides PGOOD and FLT outputs for system status monitoring.
- Can the TPS25944ARVCR be used in redundant power supply systems?
Yes, it is suitable for use in redundant power supply configurations.
