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( File format: PDF, 185 KB )
Dual-Isolated DC/DC Converter (Rev. A)
Texas Instruments

Description
The 722 converts a single 5VDC to 16VDC input into a pair of bipolar output voltages of the same value as the input voltage. The converter is capable of providing a total output current of 64mA at rated voltage accuracy and up to 200mA without damage. The two output channels are isolated from the input and from each other. They may be connected independently, in series for higher output voltage or in parallel for higher output current, as a single channel isolated DC/DC converter. Integrated circuit construction of the 722 reduces size and cost. High isolation breakdown voltages and low leakage currents are assured by special design and construction that includes use of a high dielectric strength, low leakage coating used on the internal assembly. A self-contained 900kHz oscillator drives switching circuitry, which is designed to eliminate the common problem of input current spiking due to transformer saturation or crossover switching.
Features
DUAL ISOLATED 5V TO 16V OUTPUTS HIGH BREAKDOWN VOLTAGE: 8000V Test LOW LEAKAGE CURRENT: <1 ?A at 240V/60Hz LOW COST PER ISOLATED CHANNEL SMALL SIZE: 27.9mm x 27.9mm x 7.6mm (1.1" x 1.1" x 0.3") APPLICATIONS MEDICAL EQUIPMENT INDUSTRIAL PROCESS CONTROL TEST EQUIPMENT DATA ACQUISITION SYSTEMS NUCLEAR INSTRUMENTATION




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