TPS1H000AQDGNRQ1 High-Side Switch: Circuit, Pinout, and Datasheet

The TPS1H000AQDGNRQ1 is a smart high-side switch that has an internal charge pump and a single-channel NMOS power FET. The configurable current-limit mechanism considerably improves the system's overall reliability. The load may be intelligently controlled thanks to full diagnostic features.

Setting the current-limit value for the application is possible with the external high-accuracy current limit. When there is an overcurrent, the device increases system reliability by effectively clamping the inrush current. By decreasing the size of PCB traces and connectors, as well as the capacity of the previous power stage, the TPS1H000AQDGNRQ1 device can cut system costs. When a current limit is reached, the TPS1H000AQDGNRQ1 device has three modes. Users can adjust the output to one of three modes by configuring the DELAY pin: hold the current consistently, latch off instantly, or retry automatically. The design flexibility provided by the customizable behaviors during current limit addresses functionality, cost, and thermal dissipation.

With the digital status output, the TPS1H000AQDGNRQ1 device offers full diagnostics. Real-time on-state monitoring is possible thanks to high-accuracy and low-threshold open-load detection. The TPS1H000AQDGNRQ1 device also offers a standalone mode, which allows the system to implement complete functionality locally without the use of an MCU.

The TPS1H000AQDGNRQ1 is a smart high-side switch that can be used to control a wide range of resistive, inductive, and capacitive loads, such as LEDs, relays, and sub-modules.

The following is TPS1H000AQDGNRQ1 Pinout.

Pinout

The following shows TPS1H000AQDGNRQ1 CAD Model.

Symbol

Footprint

3D Model

• Qualified for Automotive Applications

• AEC-Q100 Qualified With the Following Results:

– Device Temperature Grade 1: –40°C to 125°C

 Ambient Operating Temperature Range

– Device HBM ESD Classification Level H2

– Device CDM ESD Classification Level C4B

• Single-Channel 1000-mΩ Smart High-Side Switch

• Wide Operating Voltage: 3.4 V to 40 V • Low Standby Current: <500 nA

• Adjustable Current Limit With External Resistor

– ±15% When ≥150 mA

– ±10% When ≥300 mA

• Configurable Behavior After Current Limit

– Holding Mode

– Latch-Off Mode With Adjustable Delay Time

– Auto-Retry Mode

• Supports Standalone Operation Without an MCU

• Protection:

– Short-to-GND and Overload

– Thermal Shutdown and Thermal Swing 

– Negative Voltage Clamp for Inductive Loads

– Loss-of-GND and Loss-of-Battery

• Diagnostics:

– Overload and Short-to-GND Detection

– Open-Load and Short-to-Battery Detection in ON or OFF State

– Thermal Shutdown and Thermal Swing

The following figure is TPS1H000AQDGNRQ1 Functional Block Diagram.

Functional Block Diagram

The following figure shows TPS1H000AQDGNRQ1 Typical Block Diagram.

Typical Block Diagram

TJ must be less than 175°C to avoid thermal shutdown. The power dissipation may be significant if the output current is quite high. The  PCB  layout, on the other hand, is critical. A good PCB design can improve heat transfer, which is critical for the device's long-term durability.

• Increase the heat conductivity of the board by increasing the copper covering on the PCB. The copper on the PCB is the primary heatflow channel from the package to the ambient. When there are no heat sinks attached to the PCB on the opposite side of the board from the package, maximum copper is critical.

• To improve the board's thermal conductivity, place as many thermal vias as feasible right beneath the package thermal pad.

• To avoid solder voids, all thermal vias should be plated shut or plugged and sealed on both sides of the board. Solder coverage should be at least 85% to assure reliability and performance.

Layout

The following figure shows an example of how to design the external circuitry parameters.

Typical Application Circuitry

• The VVS ranges from 6 to 18 volts.

• 100 mA nominal current.

• A current limit of 500 mA is expected.

• When a thermally sensitive system reaches its current limit, the output latches off after 0.2 seconds. The 0.2 s is used to provide a safe start-up for a capacitive load by clamping the inrush current but not latching it off.

• On-state open-load detection, short-to-GND or overcurrent detection, and thermal shutdown detection are all available with the 5-V MCU.

• Single-Channel LED Driver

• Single-Channel High-Side Relay Driver

• Body Lighting

• Advanced Driver Assistance Systems (ADAS) Sensors

• General Resistive, Inductive and Capacitive Loads

The following figure is TPS1H000AQDGNRQ1 Package.

Package

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