The OKY-T/3 and -T/5 series are miniature non- isolated Point-of-Load (POL) switch mode DC/DC power converters for embedded applications. The module is fully compatible with Distributed-power Open Standards Alliance (DOSA) industry-standard specifi cations (www.dosapower.com). Applications include powering CPU’s, datacom/telecom systems, distributed bus architectures (DBA), programmable logic and mixed voltage systems. The wide input range is 8.3 to 14 Volts DC. Two maximum output currents are offered, 3 Amps (T/3 models) or 5 Amps (T/5 models). Based on fi xed- frequency synchronous buck converter switching topology, the high power conversion effi cient Point of Load (POL) module features programmable output voltage and On/Off control. These converters also include under voltage lock out (UVLO), output short circuit protection, over-current and over temperature protections. These units are designed to meet all standard UL/EN/IEC 60950-1 safety and FCC EMI/RFI emissions certifi cations and RoHS6 hazardous substance compliance.
The OKY‑T/3 and OKY‑T/5 series are compact, non‑isolated point‑of‑load (POL) DC‑DC converters designed for embedded applications such as CPUs, datacom/telecom systems, and programmable logic. They accept a wide input voltage range of 8.3‑14 VDC and provide either 3 A (T/3) or 5 A (T/5) output current with a programmable output voltage of 0.75‑5.5 VDC. The modules include under‑voltage lock‑out, short‑circuit, over‑current and over‑temperature protection, and meet UL/EN/IEC safety and FCC EMI/RFI standards.
The manual covers mechanical dimensions, ordering information, detailed electrical specifications, output‑voltage trimming, soldering guidelines, input fusing recommendations, thermal shutdown behavior, and derating curves. It also provides application notes on input filtering, output noise reduction, and recommended external components for optimal performance.
| Input voltage range | 8.3‑14 VDC |
|---|---|
| Maximum output current | 3 A (T/3) or 5 A (T/5) |
| Programmable output voltage range | 0.75‑5.5 VDC |
| Maximum output power | 15.3 W (T/3) / 25.5 W (T/5) |
Murata Power Solutions strongly recommends an external input fuse, F1.
The start‑up voltage is 7.5 V minimum and 8.25 V maximum.
The OKY‑T/5 model provides up to 5 A of output current.
The output voltage can be programmed between 0.75 V and 5.5 V.