1kW Isolated Quarter Brick for Intermediate Bus Architectures
The DRQ-11.4/88-L48NB-C from Murata is a regulated converter module that delivers an 11.2V output from a 48-Vdc input in a quarter-brick open-frame package. The fully-isolated (1500Vdc) DRQ-11.4/88-L48NB-C series accept a 36- to 60-Vdc input voltage range and converts it to a low Vdc output that drives external point-of-load (PoL) dc-dc power converters such as Murata Power Solutions’ tiny Okami series which feature precise regulation directly at the load.
Applications include datacom and telecom installations, cellular dataphone repeaters, base stations, instruments and embedded systems. Wideband output ripple and noise is typical 100mV, peak-to-peak. The DRQ’s synchronous-rectifier topology and fixed frequency operations means efficiencies up to 96.3%.
A wealth of electronic protection features include input under voltage lockout, over voltage lockout protection, output current limit, current sharing, short circuit hiccup, Vout overshoot, and over temperature shutdown.
Available options include various pin lengths and the baseplate. Assembled using ISO-certified automated surface-mount techniques, the DRQ series is designed to meet all UL and IEC emissions, safety and flammability certifications.
Summary of features:
- Designed for Regulated Intermediate Bus Architectures (RIBA).
- Designed & Tested to Meet the Requirements of IPC9592, Rev B.
- 96.3% Ultra-High Efficiency at Full Load.
- 36- to 60-Vdc Input Range (48V nominal).
- Monotonic Startup into Pre-Bias Output Conditions.
- Over-Current & Over-Temperature Protection.
- Synchronous Rectifier Topology.
- Stable No-Load Operation.
- Negative Logic Standard Configuration (Positive Logic Optional).
- Up To +85° Celsius Thermal Performance (With Derating).
- Remote On/Off Enable Control.
- Fully Isolated to 1500Vdc.
- Extensive Protection Features - UVLO, OVP, OCP, SCP, OTP.
- Full Safety, Emissions and Environmental Certifications.
- Approved to UL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1 Safety Approvals.
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