company blog about TI Automotive Chips LMR38020FSQDDARQ1 LMR38020-Q1 Synchronous Buck Converter

Shenzhen Mingjiada Electronics Co., Ltd. supplies TI automotive chips LMR38020FSQDDARQ1 LMR38020-Q1 4.2V to 80V, 2A automotive synchronous SIMPLE SWITCHER® power converter with 40µA IQ

Description

The LMR38020FSQDDARQ1 synchronous buck converter is designed to regulate over a wide input voltage range, minimising the need for external surge suppression components. The ability to continue to operate at nearly 100% duty cycle as needed during input voltage dips down to 4.2V makes it ideal for 48V battery automotive applications and MHEV/EV systems.

The LMR38020FSQDDARQ1 uses a precision enable terminal to provide flexibility by supporting direct connection to a wide range of input voltages or precise control of device startup and shutdown. A power normal state flag with built-in filtering and delay functions provides a true indication of system status, eliminating the need for an external monitor. The device features pseudo-random spreading for ultra-low EMI, and the switching frequency can be configured between 200kHz and 2.2MHz to avoid noise-sensitive bands. In addition, the frequency can be selected to improve efficiency at low operating frequencies or to reduce the size of the solution at high operating frequencies.

The device has built-in protection features such as cycle-by-cycle current limiting, intermittent mode short-circuit protection, and thermal shutdown in case of excessive power consumption. The LMR38020-Q1 meets automotive AEC-Q100 Level 1 and is available in an 8-pin HSOIC PowerPAD integrated circuit package.

Features

• Complies with AEC-Q100 for automotive applications
• Temperature class 1: -40°C to +125°C, T A
• Functionally Safe
• Documentation available for functional safety system design
• Designed for harsh automotive applications
• 4.2V to 80V input voltage range
• 2A continuous output current
• 40µA ultra-low quiescent operating current
• Distance between VIN and GND pins greater than 1.5mm
• Adjustable switching frequency range of 200kHz to 2.2MHz
• Synchronised with external clock frequency
• Spread spectrum reduces EMI
• 97% maximum duty cycle
• Supports startup with pre-biased outputs
• Room temperature ±1.0% tolerance voltage reference
• Precision enable terminals
• Easy-to-use device with integrated compensation network for low BOM counts
• Integrated synchronous rectification
• 8-pin HSOIC in PowerPAD™ integrated circuit package
• PFM and forced PWM (FPWM) options
• 1A version available LMR38010-Q1
• Use the LMR38020-Q1 and create a custom design with WEBENCH Power Designer

Applications

• Automotive inverters and motor control
• Automotive DC/DC converters
• Automotive battery management systems
• Automotive 48V light hybrid ECU bias power supplies

The company also long-term acquisition of TI automotive chip LMR38020FSQDDARQ1 LMR38020-Q1 synchronous buck converter, only the original genuine, bulk new refurbished are not considered, with the original packaging is preferred.

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