Overview
The TPS27S100APWPR from Texas Instruments is a 40-V, 80-mΩ, single-channel high-side switch designed for a wide range of industrial and automotive applications. This device integrates an NMOS transistor and a charge pump, providing full diagnostics and high-accuracy current-monitoring features. It is available in thermally-enhanced 14-pin HTSSOP and 16-pin QFN packages. The TPS27S100APWPR offers adjustable current-limit functionality, which enhances system reliability by protecting against overcurrent conditions during power-up or short-circuit events. The device also features an active drain-to-source voltage clamp to manage inductive load switching-off, making it suitable for driving resistive, inductive, and capacitive loads.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Supply Voltage (VIN) | 3.5 | - | 40 | V |
| Supply Voltage (for transients less than 400 ms) | - | - | 48 | V |
| Operating Junction Temperature (TJ) | -40 | - | 150 | °C |
| Nominal DC Load Current (IL,nom) | 0 | - | 4 | A |
| On-Resistance (RDS(on)) | - | 80 | - | mΩ |
| Standby Current | - | < 0.5 | - | µA |
| Turn-on Delay Time (td(on)) | 20 | 50 | - | µs |
| Turn-off Delay Time (td(off)) | 40 | 80 | - | µs |
Key Features
- Full Diagnostics: The device offers two versions: TPS27S100A with an open-drain status output and TPS27S100B with a current monitor analog output.
- Adjustable Current Limit: Allows setting the current limit value externally, enhancing system reliability during short-circuit or power-up conditions.
- High-Accuracy Current Monitor: For TPS27S100B, provides real-time monitoring of the load current without the need for further calibration.
- Wide Operating Voltage Range: Operates from 3.5 V to 40 V.
- Low Standby Current: Less than 0.5 µA, reducing power consumption in standby mode.
- Thermal Protection: Includes thermal shutdown and overtemperature protection.
- Inductive Load Switching-Off Clamp: Manages the energy of inductive loads during switching-off.
Applications
- Programmable Logic Controllers (PLCs): Suitable for controlling and monitoring industrial processes.
- Building Automation: Used in smart building systems for controlling lighting, HVAC, and security systems.
- Telecom/Networks: Applied in telecommunications and network infrastructure for power management and control.
- Industrial Automation: Ideal for driving various types of loads in industrial automation systems.
Q & A
- What is the maximum operating voltage of the TPS27S100APWPR?
The maximum operating voltage is 40 V, with transient voltage up to 48 V for less than 400 ms.
- What are the key differences between TPS27S100A and TPS27S100B?
TPS27S100A has an open-drain status output, while TPS27S100B features a current monitor analog output.
- What is the on-resistance of the TPS27S100APWPR?
The on-resistance (RDS(on)) is 80 mΩ.
- What is the purpose of the adjustable current limit feature?
The adjustable current limit protects the load and power supply from overcurrent conditions during short-circuit or power-up events.
- How does the device manage inductive load switching-off?
The device includes an active drain-to-source voltage clamp to manage the energy of inductive loads during switching-off.
- What are the typical applications of the TPS27S100APWPR?
It is used in programmable logic controllers, building automation, telecom/networks, and industrial automation.
- What is the operating junction temperature range of the TPS27S100APWPR?
The operating junction temperature range is from -40°C to 150°C.
- How does the high-accuracy current monitor work in TPS27S100B?
A current mirror sources a fraction of the load current, allowing real-time monitoring without further calibration.
- What is the standby current of the TPS27S100APWPR?
The standby current is less than 0.5 µA.
- What are the available package options for the TPS27S100APWPR?
The device is available in 14-pin HTSSOP and 16-pin QFN packages.
