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Linear introduces μModule integrated isolated Anyside switch controller LTM9100

Wednesday, October 24, 2018

Linear introduces the μModule® (micromodule) integrated isolated AnysideTM switch controller LTM9100, which protects and monitors high voltage DC power supplies up to 1000V. High voltage power supplies for industrial, datacom, avionics, and medical applications require controlled turn-on and isolation to control circuit protection, operator safety, and ground ground. Other relay or discrete based solutions are cumbersome, complex, component intensive and lack safety certification. Innovative The LTM9100 reduces design time, certification, and board space by placing all the necessary features in a compact BGA package, including isolated power and digital telemetry.

The 5kVRMS galvanic isolation barrier inside the LTM9100 isolates the digital interface and switch controller to drive an external N-channel MOSFET or IGBT switch. To ensure the robustness of the isolation barrier, the controller is tested at production with isolation performance of 6kVRMS and will be approved by the component-level UL 1577 standard, saving end-equipment manufacturers months of certification time. The I2C/SMBus interface provides isolated digital measurements of load current, bus voltage and temperature, allowing power and energy monitoring of the high voltage bus.

Due to the isolation of the LTM9100, it is very easy to configure for high side, low side (ground loop) and floating applications. With a soft-start load, the inrush current is minimized and the current-limiting circuit breaker protects the power supply from overload and short-circuit. The LTM9100 is versatile enough to control the inrush current in hot-swappable boards, AC transformers, motor drives and inductive loads. Adjustable undervoltage and overvoltage lockout thresholds ensure that the load only operates when the input supply is in the active range. A fully integrated DC/DC converter including a transformer supplies power to the isolated switch control side.

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Author:Brittany Antonia (The author of article owns the copyright.)