Overview
The TPS1HB35-Q1, produced by Texas Instruments, is a smart high-side switch designed for use in 12-V automotive systems. This device integrates robust protection and diagnostic features, ensuring reliable operation and protection of the output port even during harmful events such as short circuits. It is capable of driving a wide range of load profiles and provides high accuracy analog current sensing, enabling predictive maintenance and load diagnostics. The TPS1HB35-Q1 is available in a HTSSOP package, which reduces the PCB footprint.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Nominal Supply Voltage (VBB) | 6 | - | 18 | V |
| Extended Lower Supply Voltage (VBB) | 3 | - | 6 | V |
| Extended Higher Supply Voltage (VBB) | 18 | - | 28 | V |
| Enable Voltage (VEN) | -1 | - | 5.5 | V |
| LATCH Voltage | -1 | - | 5.5 | V |
| Diagnostic Enable Voltage (VDIA_EN) | -1 | - | 5.5 | V |
| Select Voltage (VSEL1) | -1 | - | 5.5 | V |
| Continuous Load Current (ILNOM) at TAMB = 70°C | - | - | 5 | A |
| Output Leakage Current (IOUT(standby)) at VBB = 13.5 V, TJ = 25°C | 0.01 | - | 0.5 | µA |
| On-Resistance (RON) at TJ = 25°C, 6 V ≤ VBB ≤ 28 V | - | - | 35 | mΩ |
| Current Sense Ratio (KSNS) | - | - | 2000 | - |
Key Features
- Robust Protection: The device includes reliable current limit protection, adjustable from 2 A to 22 A depending on the device variant, to protect against faults such as short circuits.
- Diagnostic Capabilities: Provides high accuracy analog current sensing, enabling load diagnostics and predictive maintenance by reporting load current and device temperature to a system MCU.
- Flexible Current Limiting: Offers different current limit ranges to accommodate various load profiles, from high transient currents to low peak current requirements.
- Compact Packaging: Available in a HTSSOP package, reducing PCB footprint.
- Wide Operating Range: Operates over a wide temperature range (-40°C to 150°C) and supply voltage range (3 V to 28 V).
- Fault Handling: Includes latched or auto-retry fault handling behavior, configurable via the LATCH pin.
- Open-Load and Short-to-Battery Detection: Features open-load and short-to-battery detection for enhanced system reliability.
Applications
- ADAS Modules: Advanced Driver Assistance Systems.
- Seat Comfort Modules: Adjustments and controls for seat comfort.
- Transmission Control Units: Automotive transmission management.
- HVAC Control Modules: Heating, Ventilation, and Air Conditioning systems.
- Body Control Modules: General body electronics control.
- Incandescent and LED Lighting: Automotive lighting systems.
- Cameras and Sensors: Various automotive sensors and camera systems.
- General Resistive, Capacitive, Inductive Loads: A wide range of load types.
- Relays/Motors: Control and management of relays and motors in automotive systems.
Q & A
- What is the primary application of the TPS1HB35-Q1?
The TPS1HB35-Q1 is primarily used in 12-V automotive systems for various applications including ADAS modules, seat comfort modules, transmission control units, and more.
- What are the key protection features of the TPS1HB35-Q1?
The device includes robust protection features such as adjustable current limiting, open-load detection, and short-to-battery detection to ensure reliable operation.
- How does the TPS1HB35-Q1 support diagnostic capabilities?
The device provides high accuracy analog current sensing and reports load current and device temperature to a system MCU, enabling predictive maintenance and load diagnostics.
- What is the operating voltage range of the TPS1HB35-Q1?
The device operates over a supply voltage range of 3 V to 28 V.
- What types of loads can the TPS1HB35-Q1 handle?
The device can handle a wide range of load profiles, including resistive, capacitive, inductive loads, and high transient current loads.
- What is the significance of the LATCH pin in the TPS1HB35-Q1?
The LATCH pin allows for configurable fault handling behavior, either latched or auto-retry, depending on the system requirements.
- What is the package type of the TPS1HB35-Q1?
The device is available in a HTSSOP package, which reduces the PCB footprint.
- What are the thermal characteristics of the TPS1HB35-Q1?
The device operates over a temperature range of -40°C to 150°C and has specified thermal resistances and characteristics to ensure reliable thermal performance.
- How does the TPS1HB35-Q1 handle open-load and short-to-battery conditions?
The device includes features for open-load and short-to-battery detection, enhancing system reliability and safety.
- What are the typical on-resistance values for the TPS1HB35-Q1?
The on-resistance (RON) is typically 35 mΩ at TJ = 25°C and 6 V ≤ VBB ≤ 28 V.
