Description
The TPS25942, TPS25944 eFuse Power MUX is a compact, feature rich power management device with a full suite of protection functions. The wide operating range allows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectional current control making the device well suited for power muxing and systems with multiple power sources.
Load, source and device protection are provided with many programmable features. Thresholds for undervoltage, overvoltage, overcurrent, dV./dt ramp rate, power good, and in-rush current protection are all programmable to suit specific system requirements. For system status monitoring and downstream load control, the device provides PGOOD, FLT and precise current monitor output.
The TPS25942, TPS25944 monitor Va) and Vourn to provide true reverse blocking from output when VuNy< (Vour)-10 mV). The device can be configured to assign Main/Auxiliary supply priority using the FLT and DMODE pins.
Features
·2.7V-18V Operating Voltage,20 V(Max)
·42mQRoN(Typical)
·0.6A to 5.3A Adjustable Current Limit(±8%)
· IMON Current Indicator Output(±8%)
·200μAOperating la(Typical)
·15μA Disabled lo(Typical)
·±2% Overvoltage, Undervoltage Thresholds
· Reverse Current Blocking
·1 us Reverse Voltage Shutoff
· Programmable dV./dt Control
· Power Good and Fault Outputs
· Two Overcurrent Fault Response Options
-TPS25942:I(LiMIT) with Thermal Shutdown
-TPS25944:4 ms Fault Timer then Shutoff
·-40°℃ to 125℃ Junction Temperature Range
· UL2367 Recognized
-File No.169910
-RLM ≥20 kQ(4.81 A max)
· UL60950 Safe during Single Point Failure
-Open/Short ILIM detection
Applications
·Power Path Management
·Redundant Power Supply Systems
·PCle cards,NICs and RAID Systems
·USB Power Banks,Power MUXes
·SSDs and HDDs
·Tablets and Notebooks·Adapter Power Devices
·PLCs,SS Relays and Fan Control
Feature
- 2.7 Vto 18 V Operating Voltage, 20 V (Maximum)
- 42-mΩ RON(Typical)
- 0.6 A to 5.3 A Adjustable Current Limit (±8%)
- IMON Current Indicator Output (±8%)
- 200-μA OperatingIQ (Typical)
- 15-μA Disabled IQ(Typical)
- ±2% Overvoltage, Undervoltage Thresholds
- ReverseCurrent Blocking
- 1-μs Reverse Voltage Shutoff
- ProgrammabledVo/dt Control
- Power Good and FaultOutputs
- Two Overcurrent Fault Response Options
- TPS25942:I(LIMIT) with Thermal Shutdown
- TPS25944: 4 ms FaultTimer then Shutoff
- –40°C to +125°C JunctionTemperature Range
- UL 2367 Recognized
- File No.169910
- RILIM≥ 20 kΩ (4.81 AMaximum)
- UL60950 Safe during Single PointFailure
- Open-Short ILIMdetection
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DescriptionThe TPS25942, TPS25944 eFuse Power MUX is a compact, featurerich power management device with a full suite of protection functions. The wide operating rangeallows control of many popular DC bus voltages. Integrated back-to-back FETs provide bidirectionalcurrent control making the device well suited for power muxing and systems with multiple powersources.
Load, source and device protection are provided with many programmable features.Thresholds for undervoltage, overvoltage, overcurrent, dVo/dt ramp rate,power good, and in-rush current protection are all programmable to suit specific systemrequirements. For system status monitoring and downstream load control, the device provides PGOOD,FLT and DMODEpins.
