Last updated on April 19, 2014 at 18:42 EDT

Get to Market Faster with an Accurate Integrated Isolated Energy Measurement Chipset for Embedded Applications

October 9, 2013

Maxim Integrated’s highly adaptable, isolated energy measurement solution reduces design cost, size, and complexity.

SAN JOSE, Calif., Oct. 9, 2013 /PRNewswire/ — Designers can now measure AC or DC power usage from any phase without the need for bulky sensors, optocouplers, or an extra power supply for the measurement subsystem. Just use the compact MAX78700/MAX78615 isolated energy measurement chipset with preloaded firmware from Maxim Integrated Products, Inc. (NASDAQ: MXIM).

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Engineers face unique challenges when embedding high-voltage AC (or DC) measurement into their design. As in electricity utility meters, isolation must be maintained between different phases, which historically has been accomplished using bulky current sensors. For most other systems, however, the need for full galvanic isolation from the rest of the system is often required to meet safety standards. This demands additional isolation components that penalize both size and cost of the system. The MAX78700/MAX78615 chipset addresses these challenges by integrating a unique isolated interface between the analog (MAX78700) and digital (MAX78615) domains and requiring only a single pulse transformer. This innovative approach significantly reduces size, complexity, and cost. This complete solution includes nonvolatile memory and preloaded application-specific firmware, providing an autonomous measurement subsystem ready for integration into any system. The chipset is ideal for solar inverters, data centers, outdoor lighting, renewable energy systems, and smart grid applications.

Key Advantages

    --  High integration: integrates nonvolatile memory, upgradeable measurement
        firmware, isolated power delivery to up to three MAX78700s (from a
        single MAX78615), and an isolated data path between ICs using a single
        pulse transformer.
    --  Flexibility: scales to thousands of volts of isolation and contains
        application-specific firmware for a wide range of energy-measurement
    --  Reduced size: eliminates the requirement for an isolated power supply
        and bulky sense transformers.
    --  Faster time to market: includes preloaded, field-upgradeable firmware
        that performs all the necessary signal processing, compensation, and
        data formatting for accurate real-time measurement.

Industry Commentary

    --  "Adding energy measurement to existing applications can be challenging,"
        said Kris Ardis, Executive Director of Energy Solutions at Maxim
        Integrated. "You don't want to change your power architecture or use
        expensive sensors, but you still need to meet safety regulations and fit
        your form factor. The MAX78700/MAX78615 isolated energy management
        solution addresses all these concerns with an out-of-the-box measurement
        that doesn't need a lot of space or engineering time for integration."

Availability and Pricing

    --  The MAX78615 processor is available in a small 24-pin TQFN package.
    --  The MAX78700 multichannel ADC is available in a small 10-pin µMAX®
    --  Pricing available upon request.

Hi-res images for the MAX78700/MAX78615 end applications and MAX78700/MAX78615 block diagrams are available.

About Maxim Integrated

At Maxim Integrated, our designs make the world more integrated. And with analog integration, the possibilities are endless. In Fiscal 2013, we reported revenues of $2.4 billion.

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uMAX is a registered trademark of Maxim Integrated Products, Inc.

    Contact:                 Timery Crawford

                             (408) 601-5435


SOURCE Maxim Integrated Products, Inc.

Source: PR Newswire