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GENERAL INFORMATION: This High-Power line of high-voltage regulated DC to DC converters is an extension of the "C" Series, directly addressing the high power density needs of >30 watt applications. High Power "C" units provide up to 60/125/250 watts. This high power density is especially suited to high-energy systems with large capacitances, fast repetition rates, or high continuous-DC-power requirements.

COMPATIBILITY:

The High Power "C" Series matches the standard 30 watt "C" Series for design methodology, wide input range, remote control, enable/disable, and reference.

LOW VOLTAGE INPUT:

The input is a dual row, 7 pin IDC header. The first row has the same pin out & signals as the 30 watt "C" Series. The second row provides the pins required to support the High Power "C" Series version. Connections can be made via J-hooked and soldered leads, or via AMP MOD-U connectors with highpressure, high-current pins. A direct-mounted PCB with header sockets, such as the UltraVolt interface board, can mate to the chassis-mounted power supply's input header. Seven #4-40 and two #2-56 PEM nuts are provided on the top cover for this purpose.

HIGH VOLTAGE OUTPUT:

The High Power "C" Series is a non-isolated, unipolar converter. Positive or negative output must be specified. Output is adjustable from 0 to 125, 250, 500, 1kV, 2kV, 4kV or 6kV on all 60W/125W/250W units. Additionally, 60W/125W models are adjustable from 0 to 8kV, 10kV, 12kV, or 15kV. As the output voltage is reduced towards 0, the maximum current capability remains unchanged. Internal capacitance is kept to a minimum to facilitate fast-rise applications. Most fast-rise applications involve charging a storage capacitor, which also acts as an additional output filter/storage capacitor. If your application is continuous DC bias power, an external filter/storage capacitor should be added. Contact UV CSD for recommended capacitor values.

OUTPUT VOLTAGE MONITOR:

A 100 Meg? divider provides a 100:1 voltage monitor on models up to 6kV. On models 8kV and higher a 1 Gig? divider provides a 1000:1 test point. The monitor has an output impedance of 1.1 Meg? and is calibrated for use with a 10 Meg? input impedance meter. Overall accuracy is ± 2.0% with a temperature coefficient of ± 200 ppm per °C. For applications requiring a different scale factor, such as an ADC compatible design, an external resistor may be added in parallel with the output.

OUTPUT CURRENT MONITOR:

The High Power "C" Series is equipped with an output current monitor. Current from the high-voltage multiplier can be monitored by reading the voltage generated between Output Monitor pin 3 and Signal Ground pin 5. The monitor has an output impedance of 5.1 k?. Internal voltage dividers create a small linear offset voltage.

MECHANICAL:

The High Power "C" Series converters are packaged in chassis-mount aluminum enclosures, mounted using the four #8-32 studs and thermal interfacing material. Electrical connections are via wiring harness or top cover mounted PCB. The 60W/125W units up to 6kV utilize the standard 19 in³ enclosure. The 60W/125W units 8kV and higher use the extended 38 in³ enclosure along with the 250W units up to 6kV. See Application Note 6 for thermal considerations and mounting configurations.

ENVIRONMENT:

The High Power "C" Series provides full power at case temperature from -40 to +65°C. Extended temperature range is available along with other enhanced capabilities. Please contact the factory. All units receive a 24 hour burn in prior to final testing.