Texas Instruments BOOST-LMP92064EVM

Overview

BOOST-LMP92064EVM from Texas Instruments is an evaluation module designed to accelerate development and validation of precision low-side current and voltage sensing systems using the LMP92064 digital sensor IC. It integrates galvanically isolated SPI communication, a 48V-compatible input stage, preconfigured 0.05Ω sense resistor, and 46.4kΩ/1.6kΩ voltage divider for up to 48V bus monitoring - enabling immediate characterization of power supply efficiency, load current profiling, and real-time energy calculation in industrial power supplies and motor drives.

For engineers reviewing the BOOST-LMP92064EVM datasheet, BOOST-LMP92064EVM pinout, BOOST-LMP92064EVM application, or BOOST-LMP92064EVM equivalent, this page delivers verified hardware interface details, isolation architecture insights, LaunchPad integration requirements, GUI-driven register access, and accurate ADC code-to-physical-unit conversion for both current and voltage channels - all essential for rapid prototyping and system-level validation.

Technical Context

The BOOST-LMP92064EVM implements a complete signal chain for evaluating the LMP92064: simultaneous 12-bit ADC sampling of current (via R1) and voltage (via R2/R3 divider), with galvanic isolation provided by ISO7220M (2-channel, 2/0) and ISO7221M (2-channel, 1/1) digital isolators on all SPI lines (CSB, SCLK, SDI, SDO). The board interfaces exclusively with the MSP-EXP430F5529LP LaunchPad via dual 20-pin headers (J1/J2), requiring custom firmware and USB virtual COM port configuration.

Power delivery includes a TPS54062 synchronous buck converter generating 5V from 12–48V Vext input, supplying the LMP92064 and isolated side of the digital isolators. Test points TP1 (VDD ≈ 5V) and TP2 (non-isolated ground) provide direct access to critical supply and reference nodes, while terminal blocks J3 (Vin+/Vin−) and J4 (Vbus/Vext) support safe, low-side series connection into live 48V systems with ≤1A load current.

Key Specifications

Availability

BOOST-LMP92064EVM is available at Aetrix Electronics and suitable for industrial power supply validation, motor drive current profiling, and embedded energy metering applications requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for BOOST-LMP92064EVM includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in precision analog, power management, and microcontroller technologies.

The BOOST-LMP92064EVM belongs to TI's BoosterPack evaluation ecosystem - designed specifically to simplify adoption of high-accuracy sensing ICs like the LMP92064 by providing fully assembled, tested, and software-supported hardware that bridges gap between datasheet specs and real-world system integration.

FAQ

What is the BOOST-LMP92064EVM used for?

The BOOST-LMP92064EVM is a Texas Instruments evaluation module built to validate the LMP92064 precision low-side current and voltage sensor in real systems. It enables engineers to measure load current (via 0.05Ω sense resistor) and bus voltage (via 46.4kΩ/1.6kΩ divider) simultaneously with galvanic isolation, supporting rapid development of power monitoring, energy metering, and fault detection subsystems. The BOOST-LMP92064EVM requires the MSP-EXP430F5529LP LaunchPad and TI's Windows GUI to operate.

Does the BOOST-LMP92064EVM require external firmware or drivers?

Yes - the BOOST-LMP92064EVM requires custom firmware loaded onto the MSP-EXP430F5529LP LaunchPad using TI's MSP430 USB Firmware Upgrade Example tool, plus a Windows USB driver installed from the BOOST-LMP92064EVM software package. Without these, the GUI cannot establish serial communication or access the LMP92064 registers. The BOOST-LMP92064EVM itself contains no programmable elements beyond the LMP92064 IC and fixed analog components.

What is the maximum input voltage supported by the BOOST-LMP92064EVM?

The BOOST-LMP92064EVM supports up to 48V on both Vbus (voltage channel input) and Vext (buck converter input). The Vbus path uses a 46.4kΩ/1.6kΩ resistor divider to scale down voltage to ≤2.048V for the LMP92064's internal ADC. The Vext input powers the TPS54062 regulator, which outputs 5V for the LMP92064 and isolated logic. Exceeding 48V on either terminal risks damage to R1, R2, R3, or U2.

Can the BOOST-LMP92064EVM be used without the MSP430 LaunchPad?

No - the BOOST-LMP92064EVM is mechanically and electrically designed as a BoosterPack add-on for the MSP-EXP430F5529LP LaunchPad only. Its J1/J2 headers match the LaunchPad pinout, and its firmware, GUI, and power sequencing depend entirely on that host platform. There are no standalone operation modes, onboard MCU, or alternative host interfaces (e.g., USB-C, UART bridge, or Raspberry Pi compatibility) defined for the BOOST-LMP92064EVM.

How does the BOOST-LMP92064EVM handle galvanic isolation?

The BOOST-LMP92064EVM achieves galvanic isolation using two TI ISO7220M (2/0 channel) and ISO7221M (1/1 channel) digital isolators placed between the LMP92064's SPI interface (CSB, SCLK, SDI, SDO) and the LaunchPad headers J1/J2. This breaks ground loops between the monitored system (connected to J3/J4) and the host PC, allowing safe measurement when Vin− and system ground are at different potentials - critical for isolated DC-DC converters and floating-bus applications.