DC-DC Converters Deliver 1 kW at 97% Efficiency

Murata’s 1-kW DRQ-11.4/88-L48 Series of quarter-brick, intermediate bus, dc-dc converter modules address the growing power requirements of high-reliability networking and telecommunications infrastructure equipment.

The fully regulated converter series provides 11.4 V_OUT at 88 A, with a V_IN range of 36 to 60 V dc, operating from 48-V dc battery systems or networking equipment that operates at 54 V_IN. This fully regulated, fixed-frequency, 1-kW-rated bus converter maintains an efficiency level of 97%, according to the company.

Features:

• Designed for regulated intermediate bus architectures (RIBAs)
• Parallel load sharing of two or more modules
• Monotonic startup into pre-bias output conditions
• Overcurrent and overtemperature protection
• Stable no-load operation
• Negative logic standard configuration (positive logic optional)
• Up to +85°C thermal performance (with derating)
• Remote on/off enable Control
• Fully isolated to 1500 V dc

Benefits:

• Integrated baseplate design provides thermal performance and flexibility for end-use thermal management
• Supports pre-biased startup and eliminates reverse-current issues during system start and shutdown
• Wide 2:1 input voltage range meets the requirements for 48-V battery systems in telecommunications applications