Overview
The TPIC84125TPWPRQ1 is a highly versatile and reliable low-frequency antenna driver produced by Texas Instruments. This integrated circuit is designed primarily for use in Passive Entry and Passive Start (PEPS) systems, which are part of the central body control module in vehicles. It operates by transmitting a magnetic field signal via antenna coils, using amplitude shift keying (ASK) to communicate with external RFID cards or keys. This component is crucial for authenticating drivers and enabling vehicle functions such as door opening and engine start.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Operating Frequency | 125 kHz | The frequency at which the antenna driver operates. |
| Operating Temperature Range | -40°C to +105°C | The range of temperatures within which the device can operate. |
| Package / Case | 28-HTSSOP (0.173", 4.40mm Width) Exposed Pad | The physical package type and dimensions of the IC. |
| Mounting Style | SMD/SMT | The method by which the component is mounted on the PCB. |
| Qualification | AEC-Q100 | The automotive qualification standard that the device meets. |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) | The level of sensitivity to moisture and the time before it must be soldered. |
| Supply Voltages | Digital 5V (VD), Analog 5V (VA), Power (VS) | The different supply voltages required for the device's operation. |
| Communication Interface | SPI (Serial Peripheral Interface) | The interface used for communication with the microcontroller. |
Key Features
- Programmable Output Stage: The output stage consists of eight programmable half-bridge MOSFET drivers, configurable in half, full, or parallel bridges.
- Linear Mode Output: Generates a sine wave voltage to reduce EMI emissions and power dissipation.
- Sophisticated Failure Detection and Handling: Includes over temperature warning, over temperature pre-warning, and energy limiting protection.
- Current Measurement and Diagnostics: Measures the load current across the antenna and provides the measured value to the microcontroller via SPI.
- Operating Modes: Supports SLEEP and WAKE-UP modes to manage power consumption and device readiness).
- Gain Control: Allows programmable gain for the output antenna to control transmission power).
Applications
The TPIC84125TPWPRQ1 is primarily used in automotive systems for Passive Entry and Passive Start (PEPS) applications. It is integrated into the central body control module of vehicles to manage functions such as:
- Vehicle door opening and locking
- Engine start and stop
- RFID and NFC communication for keyless entry systems
- Antenna coil management for magnetic field transmission
Q & A
- What is the primary function of the TPIC84125TPWPRQ1?
The primary function is to transmit a magnetic field signal via antenna coils for Passive Entry and Passive Start (PEPS) systems in vehicles).
- What is the operating frequency of the TPIC84125TPWPRQ1?
The operating frequency is 125 kHz).
- What type of package does the TPIC84125TPWPRQ1 come in?
The device comes in a 28-HTSSOP package with an exposed pad).
- What are the supply voltages required for the TPIC84125TPWPRQ1?
The device requires Digital 5V (VD), Analog 5V (VA), and Power (VS) supply voltages).
- How does the TPIC84125TPWPRQ1 communicate with the microcontroller?
The device uses a Serial Peripheral Interface (SPI) for communication with the microcontroller).
- What are the key features of the TPIC84125TPWPRQ1's output stage?
The output stage consists of eight programmable half-bridge MOSFET drivers, configurable in half, full, or parallel bridges).
- How does the TPIC84125TPWPRQ1 manage power consumption?
The device supports SLEEP and WAKE-UP modes to manage power consumption and device readiness).
- What diagnostic features does the TPIC84125TPWPRQ1 include?
The device includes over temperature warning, over temperature pre-warning, and energy limiting protection).
- How does the TPIC84125TPWPRQ1 measure and report current?
The device measures the load current across the antenna and provides the measured value to the microcontroller via SPI).
- What is the qualification standard for the TPIC84125TPWPRQ1?
The device meets the AEC-Q100 automotive qualification standard).
