Recom Power RH-1209D/H

RH-1209D/H Recom Power DC-DC Converter Summary

The RH-1209D/H is a member of Recom Power’s high-isolation ECONOLINE RH Series DC-DC converters. Offering a dual output of +9V and -9V at up to 56mA per rail, this converter is rated for 1 Watt total output power and provides reinforced isolation levels of up to 4kVDC/1s. Its design suits demanding commercial, medical, and industrial environments where high isolation and robust performance are paramount. The RH-1209D/H operates from an input voltage range of 10.8V to 13.2V, making it well-suited for low-voltage power rail distribution and isolated supply generation.

Main Attributes and Operating Capabilities of RH-1209D/H

Engineered for efficiency and safety, the RH-1209D/H incorporates a suite of features optimized for industrial and medical-grade applications. Its isolation barrier achieves either 3kVDC/1s or an enhanced 4kVDC/1s rating (with the “/H” suffix), vital for protecting downstream circuits and ensuring reliable operation in systems with stringent isolation requirements, such as IGBT gate drivers. Additional feature options include continuous short circuit protection, selectable via part numbering suffixes.

The converter’s construction utilizes UL94 V-0 flame-retardant materials for the case, supporting standards compliance and durability. Efficiency reaches up to 84% under nominal conditions, minimizing thermal dissipation and supporting compact system design. Certification to IEC/EN/UL60950-1 further underscores compatibility with international safety regulations.

Technical Parameters and Performance Metrics of RH-1209D/H

The RH-1209D/H provides two isolated outputs, delivering +9V and -9V at a maximum of 56mA per channel. The permissible input voltage range is 10.8V to 13.2V, with stable performance and output regulation achieved at nominal load and ambient conditions (25°C).

Key parameters include:

Output voltage: +9V / -9V

Maximum output current: 56mA per output

Total output power: 1 Watt

Isolation voltage: Up to 4kVDC/1s (RH-1209D/H)

Efficiency: Up to 84% (typically measured at full load, 25°C)

Input voltage range: 10.8V to 13.2V

Performance graphs, such as efficiency versus load and voltage deviation versus load, highlight the converter’s capability to maintain output stability and energy efficiency across varying load profiles. For reliability considerations, the maximum capacitive load is specified to ensure startup in less than one second without converter damage.

Physical Properties and Installation Methods for RH-1209D/H

The RH-1209D/H adopts a compact 7-SIP module package (5 leads), with physical dimensions of 19.7mm x 7.1mm x 10.2mm (0.77" x 0.28" x 0.40"). This footprint enables high-density PCB layout designs and supports straightforward through-hole assembly. Recommended footprint and pinning information ensure accurate placement and connectivity in typical engineering workflows. The operating temperature range extends from -40°C to +90°C, with derating graphs indicating safe continuous operation limits under free-air convection.

Environmental Standards and Certification Status of RH-1209D/H

Environmental compatibility and regulatory compliance are central to the RH-1209D/H’s design. The unit is RoHS3 compliant, signifying adherence to current hazardous substance restrictions, and holds REACH unaffected status for chemical safety in manufacturing. Moisture Sensitivity Level (MSL) is rated at 1 (unlimited), affording flexibility in storage and handling.

Certifications achieved include:

IEC/EN/UL60950-1 (Safety for IT equipment)

CSA/CAN C22.2 No. 60950-1-07 (Canadian standards)

EN55032 (EMC compliance for multimedia equipment)

These credentials render the RH-1209D/H suitable for environments requiring tested and trusted compliance with global standards.

Usage Examples and Design Insights for RH-1209D/H

A crucial advantage of the RH-1209D/H is its suitability for isolated gate driver circuits (e.g., IGBT/SiC MOSFET drivers) and medical instrumentation where isolation and consistent dual voltage rails are essential. The converter’s high isolation rating enables its use in systems where user safety and signal integrity between high-voltage and logic domains are mandatory.

Engineers selecting the RH-1209D/H should consider requirements for isolation, output regulation, load type, startup behavior under capacitive loading, and short circuit protection (as indicated by appropriate part suffixes). Thermal management is facilitated by its efficiency and wide ambient temperature tolerance, enabling operation in both compact enclosures and extended industrial environments.

Alternative or Substitute Products for RH-1209D/H

Alternative models to RH-1209D/H within Recom Power’s portfolio and broader market may be relevant for design optimization. For projects targeting new medical applications, the REM1 series from Recom Power is recommended as a preferred alternative, given enhanced performance and compliance for these stringent sectors.

Additionally, related models such as RH-1205D/P (12V input, ±5V output, dual output, continuous short circuit protection) or single-output options in the RK series (e.g., RK-0509S/HP with 5V input, 9V output, 4kVDC/1s isolation plus continuous short circuit protection) may offer tailored solutions depending on input/output requirements and protection features. Engineers should evaluate compatibility based on specific voltage, current, isolation, packaging, and protection needs.

Conclusion

The Recom Power RH-1209D/H DC-DC converter stands out as a robust, high-isolation solution for industrial, commercial, and medical power supply applications. With its compact footprint, extended temperature range, dual regulated outputs, and alignment with key safety and environmental standards, the RH-1209D/H enables reliable development of isolated power domains. When selecting power conversion modules, engineers should consider the RH-1209D/H’s feature set, certifications, and available protective options, while also reviewing potential alternatives like the REM1 series for specialized medical and high-compliance designs.