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These ORing modules are designed to replace traditional diodes in applications that require ORing functionality for power supply redundancy or parallel operation. The i1R series uses MOSFET-based circuitry to provide a superior level of performance while reducing reverse current transients.
Applications for the i1R modules include communications, test and measurement equipment, plus harsh environment industrial and robotics requiring a high degree of shock and vibration. While the i1R series was designed to complement other TDK-Lambda solutions, including the i7A and i7C non-isolated converters, GQA and HQA industrial isolated DC-DC converters for high-shock and vibration environments, and RGF differential mode filter modules, its flexible architecture allows it to be deployed alongside other power solutions.
The i1R series has a fast 500 ns (typ) turn-off response, blocking reverse current transients during fault conditions for better protection. The product has a typical low on-resistance of 2.5 and 1.5 mΩ, reducing power losses and waste heat, simplifying the thermal design. The product’s shielded metal package size is a compact 1 x 1” (26.3 x 26.3 mm), saving valuable board space and supporting efficient cooling. For added convenience and simplicity, the series operates without the need for any external components.
Main applications
• Communications, test and measurement, harsh environment industrial and robotics requiring a high degree of shock and vibration
Main features and benefits
• 99.5% efficiency;
• Compact size;
• Fast turn-off during fault conditions;
• Replaces traditional diodes;
About TDK Corporation
TDK Corporation (tdk.com) is a world leader in electronic solutions for the smart society based in Tokyo, Japan. Built on a foundation of material sciences mastery, TDK welcomes societal transformation by resolutely remaining at the forefront of technological evolution. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK’s comprehensive, innovation-driven portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads, software and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics, and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2025, TDK posted total sales of USD 14.4 billion and employed about 105,000 people worldwide.
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