Overview
The TLE7368-2E, part of the TLE7368 series, is a multifunctional power supply circuit designed specifically for automotive powertrain systems utilizing a standard 12 V battery. This device is tailored to supply and monitor next-generation 32-bit microcontroller families, particularly those with 13 μm lithography, requiring voltage levels such as 5 V, 3.3 V, or 1.2 V. The TLE7368-2E integrates a Buck converter with linear regulators and voltage followers to achieve minimal power dissipation, enabling operation even at high ambient temperatures.
Key Specifications
| Parameter | Specification |
|---|---|
| Battery Input Voltage Range | < 4.5 V to 45 V |
| Operating Temperature Range | Tj = -40°C to +150°C |
| Pre-regulator Output | 5.5 V / 2.5 A (Buck Converter) |
| Post-regulator Outputs | LDO1: 5 V ±2%, 800 mA; LDO2: 3.3 V ±2% or 2.6 V ±2%, 700 mA |
| Core Supply | LDO3 control for external NPN power stage: 1.2 V ±2% |
| Tracking Regulators | Two regulators following the main 5 V, 105 mA and 50 mA |
| Stand-by Regulator | Linear voltage regulator, hardware selectable output voltages as 1.0 V or 2.6 V, 30 mA |
| Package | PG-DSO-36, Low Rthja Power-P-DSO-36 |
Key Features
- High efficient next generation microcontroller power supply system
- Wide battery input voltage range < 4.5 V up to 45 V
- Operating temperature range Tj = -40°C to +150°C
- Pre-regulator for low all over power loss: Integrated current mode Buck converter 5.5 V/2.5 A
- Post-regulators for system and controller I/O supply: LDO1: 5 V ±2%, 800 mA; LDO2: 3.3 V ±2% or 2.6 V ±2%, 700 mA
- Integrated linear regulator control circuit to supply controller cores: LDO3 control for an external NPN power stage: 1.2 V ±2%
- Post-regulators for off board supply: Two tracking regulators following the main 5 V, 105 mA and 50 mA
- Stand-by regulator with lowest current consumption: Linear voltage regulator as stand-by supply for e.g., memory circuits
- Hardware controlled on/off logic, undervoltage detection, window watchdog circuit, overcurrent protection, and overtemperature shutdown
- Power sequencing on controller supplies
Applications
- Powertrain: Transmission, Engine Management Systems (EMS)
- Safety: Electronic Power Steering (EPS)
Q & A
- What is the primary application of the TLE7368-2E?
The TLE7368-2E is primarily designed for automotive powertrain systems using a standard 12 V battery.
- What voltage levels can the TLE7368-2E supply?
The device can supply voltage levels such as 5 V, 3.3 V, and 1.2 V.
- What is the operating temperature range of the TLE7368-2E?
The operating temperature range is Tj = -40°C to +150°C.
- What is the output of the pre-regulator in the TLE7368-2E?
The pre-regulator outputs a pre-regulated voltage of 5.5 V with a minimum peak current capability of 2.5 A.
- What are the current capabilities of the post-regulators?
LDO1: 800 mA, LDO2: 700 mA.
- Does the TLE7368-2E have a stand-by mode?
Yes, the TLE7368-2E offers a stand-by mode to reduce current consumption when the motor is turned off.
- How is the stand-by regulator configured?
The stand-by regulator has hardware selectable output voltages as 1.0 V or 2.6 V, with a current limit of 30 mA.
- What protection features does the TLE7368-2E include?
The device includes undervoltage detection, overcurrent protection, overtemperature shutdown, and a window watchdog circuit.
- What is the power sequencing function in the TLE7368-2E?
The power sequencing function provides a controlled power up sequence of the three output voltages.
- Is the TLE7368-2E AEC qualified and RoHS compliant?
Yes, the TLE7368-2E is AEC qualified and RoHS compliant.
