Overview
The TLE7368EXUMA1, produced by Infineon Technologies, is a multifunctional power supply circuit designed specifically for automotive powertrain systems. It is part of the TLE7368 family, which includes variants such as TLE7368E, TLE7368-2E, and TLE7368-3E. This device is optimized for supplying next-generation 32-bit microcontroller families, particularly those requiring voltage levels of 5 V, 3.3 V, or lower core voltages like 1.5 V, 1.2 V, or 1.3 V.
The TLE7368 series follows the concept of its predecessor, the TLE6368, by cascading a Buck converter with linear regulators and voltage followers to achieve minimal power dissipation. This configuration enables the device to operate efficiently even at high ambient temperatures.
Key Specifications
| Specification | Value | Description |
|---|---|---|
| Battery Input Voltage Range | 4.5 V to 45 V | Wide input voltage range to accommodate various automotive power systems |
| Operating Temperature Range | -40°C to +150°C | Robust temperature range for reliable operation in harsh automotive environments |
| Pre-regulator Output | 5.5 V / 2.5 A | Integrated current mode Buck converter with a peak current capability of 2.5 A |
| LDO1 Output | 5 V ±2%, 800 mA | Linear regulator for system and controller I/O supply |
| LDO2 Output | 3.3 V ±2% or 2.6 V ±2%, 700 mA | Selectable output voltage for system and controller I/O supply |
| LDO3 Output | 1.5 V, 1.2 V, or 1.3 V | Integrated linear regulator control circuit for external NPN power stage, depending on the variant |
| Tracking Regulators | 2 x 5 V, 105 mA and 50 mA | Output voltages following the main 5 V linear regulator |
| Stand-by Regulator | 1.0 V or 2.6 V, 30 mA | Hardware selectable output voltages with independent battery input |
| Package | Low Rthja Power-P-DSO-36; PG-DSO-36 | Thermal enhanced exposed-pad package for wide temperature range |
Key Features
- High Efficiency: Optimized for low power dissipation using a Buck converter cascaded with linear regulators and voltage followers
- Wide Input Voltage Range: Operates from 4.5 V to 45 V, suitable for automotive power systems
- Multiple Output Voltages: Provides 5 V, 3.3 V (or 2.6 V), and core voltages of 1.5 V, 1.2 V, or 1.3 V depending on the variant
- Tracking Regulators: Two tracking regulators following the main 5 V output with 105 mA and 50 mA current capabilities
- Stand-by Mode: Low current consumption in stand-by mode with hardware selectable output voltages of 1.0 V or 2.6 V
- Undervoltage Detection and Reset: Independent undervoltage detection circuits with adjustable reset delay time
- Window Watchdog Circuit: For monitoring and controlling the microcontroller
- Overcurrent Protection and Overtemperature Shutdown: Enhanced safety features for all regulators
- Power Sequencing: Controlled power-up sequence of the output voltages
Applications
- Powertrain Systems: Suitable for transmission and engine management systems (EMS)
- Safety Systems: Applicable in electronic power steering (EPS) and other safety-critical systems
Q & A
- What is the primary function of the TLE7368EXUMA1?
The TLE7368EXUMA1 is a multifunctional power supply circuit designed to supply and monitor next-generation microcontrollers in automotive powertrain systems.
- What is the input voltage range of the TLE7368EXUMA1?
The device operates within an input voltage range of 4.5 V to 45 V.
- What are the output voltages provided by the TLE7368EXUMA1?
The device provides output voltages of 5 V, 3.3 V (or 2.6 V), and core voltages of 1.5 V, 1.2 V, or 1.3 V depending on the variant.
- What is the purpose of the tracking regulators in the TLE7368EXUMA1?
The tracking regulators follow the main 5 V output with current capabilities of 105 mA and 50 mA.
- How does the stand-by mode function in the TLE7368EXUMA1?
In stand-by mode, the device reduces current consumption to a minimum, with hardware selectable output voltages of 1.0 V or 2.6 V.
- What safety features are included in the TLE7368EXUMA1?
The device includes undervoltage detection, overcurrent protection, overtemperature shutdown, and a window watchdog circuit.
- What is the operating temperature range of the TLE7368EXUMA1?
The device operates within a temperature range of -40°C to +150°C.
- What package options are available for the TLE7368EXUMA1?
The device is available in Low Rthja Power-P-DSO-36 and PG-DSO-36 packages.
- Is the TLE7368EXUMA1 AEC qualified?
Yes, the TLE7368EXUMA1 is AEC qualified and RoHS compliant.
- What are some potential applications of the TLE7368EXUMA1?
The device is suitable for powertrain systems such as transmission and engine management systems (EMS), and safety systems like electronic power steering (EPS).
