TPS272C45
36-V, 45-mΩ, 3-A, 2-ch, Industrial high-side switch with adjustable current limit
TPS272C45
- Low R DS(on) (45-mΩ typical) high-side switch for 24-V industrial applications
- Wide DC operating voltage range: 6 V to 36 V
- Low quiescent current (Iq) of 0.5 mA per channel (typical) from 24-V supply
- Fixed (5.8 A) and adjustable (0.7 A to 4 A with external resistor) current limiting
- Drive inductive, capacitive, and resistive loads
- Integrated output clamp to support inductive load discharge
- Capacitive load drive minimizing peak inrush current through dual threshold current limiting
- Robust output protection
- Thermal shutdown
- Protection against short to ground events
- Configurable fault handling
- Enhanced diagnostic feature
- Output load current measurement
- Open load (off-state) detection
- Package: 24-pin QFN (5 mm × 4 mm)
- UL 2367 Recognized
- File No. 169910
- Functional Safety-Capable
The TPS272C45 is a dual-channel smart high-side switch designed to meet the requirements of industrial control systems. The low on-resistance (R DS(on) of 45 mΩ) minimizes device power dissipation driving a wide range (100 mA to 3 A) of output load current. The device provides an additional low voltage supply (3.3 V to 5 V) input pin to minimize no-load power dissipation. The device integrates protection features such as thermal shut down, output clamp, and overcurrent limit. These features improve system robustness during fault events such as short circuit.
The TPS272C45 device implements an adjustable threshold current limiting circuit that improves the reliability of the system by reducing inrush current when driving large capacitive loads and minimizing overload current. The device also implements a configurable inrush current time period with a higher level of allowed current to drive high inrush current loads like lamps or for fast charging of capacitive loads. The device also provides an accurate load current sense that allows for improved load diagnostics enabling better predictive maintenance.
The TPS272C45 device is available in a small 24-pin, 5 mm × 4 mm QFN leadless package with 0.5 mm pin pitch minimizing the PCB footprint.
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TPS272C45EVM — TPS272C45 evaluation module for 45-mΩ, 4-A, dual-channel, industrial smart high-side switch
The TPS272C45 evaluation module (EVM) is used to demonstrate and showcase all of the features of the underlying TPS272C45 industrial high-side switch. This evaluation board provides an easy way to connect a set of power supplies to the inputs of the TPS272C45, connect a load to the output, and (...)
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RHF) | 24 | Ultra Librarian |
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