GENERAL INFORMATION:
The Bi-Polar “C” Series line of regulated DC-to-DC high-voltage converters
is an extension of the High Power “C” Series. Bi-Polar “C” Series
units contain a pair of + and - standard-product, 60-watt or 125-watt High Power “C” Series
assemblies, providing a total of 125 watts or 250 watts. By encapsulating a module
pair within one case, the cost of testing, potting, burn-in, and system integration
is reduced.
The ± HV output pair is packaged in UltraVolt's 4.5" x
8" x 1.1" standard case. This high power density is especially suited
to high-energy pulsers, amplifiers, and discharge devices with large capacitance,
fast repetition rates, or high current loads. See Application
Note 10 for more
charging information. See the High
Power “C” Series datasheet for
detailed specifications.
COMPATIBILITY:
The Bi-Polar “C” Series matches the standard UltraVolt
60 watt / 125 watt High Power “C” Series for all electrical
functions and design methodology, including wide input range, remote
control, enable/disable, output monitors, and local +5 VDC reference
output.
HIGH VOLTAGE OUTPUT:
Bi-Polar “C” Series units, like all High Power “C” units, are
non-isolated converters. The output range is independently adjustable from
0 to ±125V, ±250V, ±500V, ±1kV, ±2kV, ±4kV,
or ±6kV on all 60Wx2 and 125Wx2 models. 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
the factory for recommended capacitor values.
OUTPUT CURRENT & VOLTAGE
MONITORS:
The Bi-Polar “C” Series units contain two pairs of output
voltage and current monitors, one pair for the + HVPS, one pair for
the - HVPS. See the High
Power “C” Series data sheet
along with Application Note 13 and Connection
Drawings #3 and #4 for more details.
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HV & LV
CONNECTIONS:
Each independent HVPS in the Bi-Polar “C” Series
has a dedicated input power and control
connector. These connectors are standard,
dual-row, 7-pin headers. Each HVPS also
has a dedicated, HV-ground-return, 2-pin
header and HV output, 2-pin header.
Wire-harness
connections can be made via J-hooked and
soldered leads, AMP Mod-U connectors with
high-current pins, or other wire-applied
header connectors.
PCBs can be mounted
directly to HVPS with the headers plugged
into PCB sockets or soldered directly to
the PCB. Direct-mounted PCBs can use factory
or user-supplied standoffs mounted directly
to the (7) #4-40 & (4) #2-56 PEM nuts
provided on top of the HVPS.
MECHANICAL:
The Bi-Polar “C” Series converters are packaged in aluminum enclosures.
Both the 125W(60Wx2) and the 250W(125Wx2) versions use the 38in³ package. Chassis
wall mounting is facilitated with the four #8-32 studs. Thermal grease or elastomer
should be used prior to mounting. An optional flush-mount bracket kit allows
the unit to be surface mounted with the #8 studs removed. An optional vertical
mounting bracket and finned heatsink allow the units to be stacked side by side.
ENVIRONMENTAL:
The High Power Bi-Polar “C” Series
provides full power at case temperature from
-40 to +65°C. Extended temperature range
is available along with enhanced capabilities.
Please contact the factory. All units receive
a 24-hour burn-in prior to final testing.
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