The LM38020EVM is an 80-V DC/DC buck regulator that employs synchronous rectification to achieve high conversion efficiency in a small footprint. The EVM operates over a wide input voltage range of 6 V to 80 V to provide a regulated 5-V output at 400-kHz switching frequency. The output voltage has better than 1.5% setpoint accuracy and is adjustable using an external resistor divider. The module design uses the LMR38020F synchronous buck converter with the following:
The LMR38020 converter is available in an 8-pin SO PowerPAD™ integrated circuit package to enable high-density, low-component count DC/DC solutions. The LMR38020EVM evaluation module is qualified for the LMR38020 as well as the LMR38020-Q1 buck converter. See Table 1-1 for package information.
CONVERTER | IC | PACKAGE |
---|---|---|
U1 | LMR38020-Q1 | 8-pin SO package with PowerPAD (4.89 mm × 3.90 mm) |
LMR38020 |
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Always follow TI’s setup and application instructions, including use of all interface components within their recommended electrical rated voltage and power limits. Always use electrical safety precautions to help ensure the user's personal safety and the safety of those working around the user. Contact TI’s Product Information Center TI's Product Information Center for further information.
Save all warnings and instructions for future reference.
Failure to follow warnings and instructions can result in personal injury, property damage, or death due to electrical shock, burn hazards, or both.
The term TI HV EVM refers to an electronic device typically provided as an open-framed, unenclosed printed-circuit board assembly. It is intended strictly for use in development laboratory environments, solely for qualified professional users that have training, expertise, and knowledge of electrical safety risks in development and application of high-voltage electrical circuits. Any other use, application, or both, are strictly prohibited by Texas Instruments. If the user is not suitably qualified, the user should immediately stop from further use of the HV EVM.
As a precautionary measure, it is always a good engineering practice to assume that the entire EVM may have fully accessible and active high voltages.
Safety and Precautions
The EVM is designed for professionals who have received the appropriate technical training, and is designed to operate from an AC power supply or a high-voltage DC supply. Please read this user's guide and the safety-related documents that come with the EVM package before operating this EVM.
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Do not leave the EVM powered when unattended. |
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Hot surface! Contact may cause burns. Do not touch! |
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High Voltage! Electric shock is possible when connecting board to live wire. Board should be handled with care by a professional. For safety, use of isolated test equipment with overvoltage and overcurrent protection is highly recommended. |