DC Power Supply offers remote control via RS-232 interface.
Press Release Summary:
Utilizing switch mode technology, Model VSP6020 offers as much as 1.2 kW in 19 in. rack-mounted 1U chassis, while keeping noise levels under 20 mV. Analog remote sensing automatically maintains desired voltage at load level of power cable. With output of 0-60 Vdc/0-20 A, unit is suited for automatic test equipment, research and development labs, as well as telecommunications. Up to 9 units can be cascaded, producing more that 10 kW of dc power.
Original Press Release:
B & K Precision's® New DC Power Supplies Generate Kilowatts of Power But Only Millivolts of Noise
YORBA LINDA, Calif. June 11, 2004 - B&K Precision Corporation, one of the industries's leading suppliers of test and measurement products, today announced the immediate availability of the first of a new family of high-power, low-noise DC power supplies. The Model VSP6020 High Power Switching DC Power Supply is compatible with most computer via a standard RS-232 serial port. Future models in the family will provide communication via GPIB interface. The new unit utilizes modern switch mode technology to produce a high-power, low-noise switching supply that costs around 25 percent less than linear supplies with the same power. At a price of only $1725.00, the Model VSP6020 offers as much as 1.2 kilowatts in a 19-inch rack mounted chassis that measures just 1U (1.75 inches) in height. The Model VSP6020 Power Supply, with an output of 0 - 60VDC, 0 - 20A, is ideal for applications ranging from automatic test equipment to R&D labs, to telecommunications.
Among the many outstanding features of the Model VSP6020 DC Power Supply are:
o Precise output voltage control via:
a. manual tuning utilizing front panel mounted Ten-tern potentiometers and three-digit meters
Remote control from an RS-232 Interface
c. analog remote sensing automatically maintains desired voltage at load level of power cable.
o Provides 1.2 kilowatts at 60V output voltage
o Compact 1U (1.75 inch by 19 inch rack mountable cabinet
o Up to nine units can be cascaded, producing more that 10 Kilowatts of DC power.
o Front-to-back air flow allows full power operation without space between supplies.
When engineers go shopping for power supplies, the classic choice facing them has always been either linear or switching designs. Linear supplies produce a clean DC output-but the downside is lower efficiency and relatively high cost. On the other hand, switching supplies that produce the same wattage are more efficient and less expensive, but they also deliver
high-frequency noise along with the DC power.
Now, B+K Precision's new Model VSP6020 DC Power is giving
engineers another option. Using newer switch mode technology, B+K can offer low-noise switching supplies that cost around 25% less than linear supplies with the same power. The new power supply packs as much as 1.2 kilowatts into a 19-inch, rack-mounted box that measures just 1U (1.75 inches) in height. Furthermore, the Model VSP6020 DC Power Supply achieves an energy conversion efficiency of 80%, while keeping noise levels
under 20 millivolts.
Behind the performance advantages of the Model VSP6020 are
advances in switching techniques. Two are particularly significant. One is soft switching; the other is a two-device asynchronous half-bridge DC to DC converter design. The soft switching technique is a vital step for reducing switching noise. This technique ensures that the switching action will occur when the voltage across the switching device is at a minimum. By turning the switching device in the converter on and off when there is little voltage across it, the transformer load does not see sharp voltage transients.
Eliminating that transient gets rid of much of the high-frequency system noise that would otherwise propagate through the transformer to the output stage. It also helps reduce the noise that would typically feed back to the source. A built-in RFI filter further reduces conducted power line noise emissions, as well as susceptibility, allowing the supplies to meet EN55022 Class A standards.
The Model VSP6020 DC Power Supply further reduces the converter's noise by using a "piggy pack" linear regulator to follow the conversion stage. The total effect is to improve the transient response to the changes in load and to reduce output noise and ripple from the DC converter to a maximum of 20 millivolts, with 5 millivolts typical at full load. Along with
controlling output noise, the converter and regulator allow the device to offer precise output voltage control.
The applications that the Model VSP6020 DC Power Supply targets
typically need high DC voltages at very high current levels (1.2 kilowatts at 60V). For applications requiring even more power, supplies can be run in parallel or series to boost current or voltage as needed.
Available for immediate delivery, the Model VSP6020 DC Power Supply is priced at $1725.00, and comes with a user instruction manual and B&K Precision Corporation's outstanding one-year warranty.
For over 50 years, B&K Precision Corporation has developed a
reputation for excellence in the design and manufacture of high quality, reliable and cost-effective test and measurement products. Recognized for their price-performance value, ease of use, measurement accuracy and application flexibility, B&K Precision Corporation products are available worldwide through a global network of authorized distributors.
For additional information or the name and location of an authorized distributor near you, contact B&K Precision Corporation, 22820 Savi Ranch Parkway, Yorba Linda, California, 92887, Tel: (714) 921-9095, Fax: (714) 921-6422 or visit our Web site at www.bkprecision.com
