SynQor has expanded its BusQor family of isolated semi-regulated DC/DC converters for intermediate bus architecture applications. The SQ60 series accepts the full Telco input range of 36 to 75V and provides a semi-regulated 12V for point-of-load converters. These converters incorporate next-generation, board-mountable, fixed switching frequency technology and use synchronous rectification to achieve full load power conversion efficiency.
The SQ60120ETA17 provides 204W in an open-frame, eighth brick package with low power dissipation and does not require a heatsink. The 12V quarter-brick offerings include: the 25A/300W SQ60120QEx25 bus converter available in an open-frame or baseplated package; the SQ60120QPA28, a 28A/336W open-frame bus converter; and the 33A/396W SQ60120QPB33 baseplated converter. The SQ60060QPA55 is a 6V bus converter in an open-frame configuration providing 55A/330W for lower bus voltage requirements. The SQ60120HZA50 is a 12V half-brick bus converter that can provide up to 50A/600W in a baseplated configuration.
The quarter-brick and half brick converters feature tightly matched output droop share characteristics. This provides for direct paralleling of devices without any additional external circuitry. Each of the droop share converters are calibrated to ensure the output voltage is well matched. In addition to current sharing, a droop characteristic improves load transient response as well as point-of-load converter stability.
Protection features include input under-voltage lockout, input over-voltage shutdown, output current limit and short circuit protection, active back bias limit, output over-voltage protection and thermal shutdown. All models have 2000V DC isolation rating between input and output, are rated with MTBF values in excess of 2MHrs, and are fully 6/6 RoHS compliant.
