UMW Series

  • Voltage from 8kV to 20kV, Fixed Negative or Positive Polarity
  • Output Power of 60 and 125 Watts
  • V/I Regulation with Automatic Crossover Control
  • Voltage and Current Monitor Signals
  • UL Recognized, CE Listed and RoHS Compliant

60-125W High Voltage Power Supplies

Form, Fit and Function Usability:

Spellman’s UMW Series of high voltage modules provides users with a form, fit and function replacement for presently available commercially made units, while providing superior features and benefits at competitive pricing. Utilizing propri­etary power conversion technology, unique high voltage packaging, and Spellman’s unmatched encapsulation tech­niques, these SMT based high voltage modules provide improved performance and easier system integration at a lower cost when compared to the competition.

Advanced Power Conversion Topology:

UMW converters use a proprietary resonant power conversion topology providing exceptional efficiency and inherent low noise and ripple outputs. Radiated emissions are dramatically reduced compared to conventional switch­ing topologies, effectively minimizing or even eliminating the need to shield the unit from adjacent circuitry.

The high voltage output is generated through the use of a ferrite core high voltage step up transformer which feeds the high voltage output circuitry. Units utilize an appropriate arrangement of low capacitance Cockcroft-Walton voltage multiplier stages to obtain the specified high voltage output.

Due to the fixed, high frequency conversion rate of the converter, the output capacitance is small resulting in minimal stored energy and fast rise times. Through the use of gener­ously rated surge limiting resistors and a fast acting current loop, all units are fully arc and short circuit protected.

Control and Regulation:

The actual output voltage generated is sampled via a high impedance divider to create a voltage feedback signal. A current feedback signal is created via a current sense resis­tor being placed in the low end return of the high voltage output circuitry. These two accurate ground referenced feedback signals are used to precisely regulate and control the units output. These accurate and calibrated signals are also used for external monitoring purposes.

Due to the UMW’s unique converter topology it can provide full current into low impedance loads or even a short circuit. Standard units limit at 103% of maximum rated output current.

Standard User Interface:

The Spellman UMW Series offers a standard customer interface that provides current programming capability and positive polarity, buffered, low output impedance volt­age and current monitor signals (0 to +4.64Vdc equals 0 to full scale rated). A voltage programming input is provided where 0 to +4.64Vdc equals 0 to 100% of rated voltage.

Current programmability allows the user to set where the unit will current limit, anywhere from 0 to 100% of maximum rated current. This feature is beneficial where less than full output current is desired, like in the case of protecting a sensitive load.

The buffered low impedance voltage and current monitor signals can drive external circuitry directly, while minimizing loading and pickup effects. These feature save the user the expense and implementation of external interface buffering circuitry while improving overall signal integrity.

Mechanical and Environmental Considerations:

The UMW Series are modular sheet metal enclosed convert­ers measuring 8.00. X 4.50. X 1.075. (203mm X 114mm X 27mm). All units are encapsulated using a propriety silicon based potting material which is considerably lighter in weight than epoxy encapsulation techniques. Physical mounting of the unit is accomplished via the use of bottom mounted studs or threaded blind inserts, dependent upon model ordered.

CE ROHS RU Marking

Specifications

(Ref. 128070-001 REV. J)

Input Voltage:

24Vdc

Normal Voltage Range:

23Vdc to 30Vdc

Derated Voltage Range:

11Vdc to 30Vdc

Input Current: (typical)

Disabled: <40mA

No load: <600mA

Full load: 60 watt units: 3 amps

125 watt units: 6.2 amps

Voltage Regulation:

Line: <0.01%

Load: <0.01%

Current Regulation:

Line: <0.01%

Load: <0.01%

Stability:

0.01% per 8 hours, 0.02% per day after 30 min. warmup

Accuracy:

2% on all programming and monitoring, except I Sense 10%

Temperature Coefficient: (typical)

100ppm/°C

Overshoot:

<0.1% Vp 

Environmental:

Temperature Range:

Operating: -0°C to 65°C case temperature

Storage: -55°C to 85°C, non operational

Humidity:

10% to 90%, non-condensing

Dimensions:

8.00. L X 4.50. W X 1.075. H (203mm X 114mm X 27mm)

Weight:

1.75 lbs. (0.79kg)

Regulatory Approvals:

Compliant to 2004/108/EC, the EMC Directive and 2006/95/EC, the Low Voltage Directive. Compliant to 2002/95/EC, RoHS, UL/CUL recognized, File E227588, Volume X1-A21

See product PDF for more specification and features.

UMW 60W SELECTION TABLE

Model Number Output V Output Current Ripple(max) %Vp-p Output Capacitance Arc Limiting Resistance I Sense Scaling Full Scale Signal
UMW8*60 0 to 8kV 7.5mA <1.0 (C load ≥0.05μF 3553pF 14.1kΩ 1.6V
UMW10*60 0 to 10kV 6mA <1.0 (C load ≥0.05μF 3553pF 14.1kΩ 1.47V
UMW12*60 0 to 12kV 5mA
<1.0 (C load ≥0.05μF
2870pF 30kΩ 1.24V
UMW15*60 0 to 15kV 4mA <1.0 (C load ≥0.05μF 2460pF 30kΩ 1.0V
UMW20*60 0 to 20kV 3mA <1.0 (C load ≥0.01μF) 2460pF 45kΩ 4.61V

UMW 125W SELECTION TABLE

Model Number Output V Output Current Ripple(max) %Vp-p Output Capacitance Arc Limiting Resistance I Sense Scaling Full Scale Signal
UMW8*125 0 to 8kV 15.5mA <1.0 (C load ≥0.05μF 7106pF 3kΩ Signal 1.1V
UMW10*125 0 to 10kV 12.5mA <1.0 (C load ≥0.05μF 7106pF 3kΩ 1.15V
UMW12*125 0 to 12kV 10.5mA <1.0 (C load ≥0.05μF 5740pF 6.6kΩ 1.40V
UMW15*125 0 to 15kV 8.3mA <1.0 (C load ≥0.05μF 4920pF 6.6kΩ 1.1V
UMW20*125 0 to 20kV 6.25mA <1.0 (C load ≥0.01μF 4920pF 14.1kΩ 9.57V

Grayed text indicates Legacy interface signals. 

ORDERING INFORMATION

Voltage
0 to 8kV 8
0 to 10kV 10
0 to 12kV 12
0 to 15kV 15
0 to 20kV 20
Polarity
Positive P
Negative N
Power
60 Watts 60
125 Watts 125
Legacy Interface
Legacy Interface L

If a high voltage mating connector is required it should be included at time of order. See page 3 for details.

STANDARD INTERFACE

Pin Signal Parameters
1 Power Ground Return +24Vdc power ground return
2 + Power Input +24Vdc power input
3 I Sense See I Sense text and tables for details
4 Enable Input Low (<0.7V, Isink@1mA)=HV OFF,
High (open or >2V)=HV ON
5 Signal Ground Signal Ground
6 Remote V Adjust 0 to +4.64Vdc = 0 to 100%, Zin >1MΩ
7 +5V Reference Output +5Vdc ±2%. Zout = 475Ω
8 Power Ground Return +24Vdc Power Ground Return
9 + Power Input +24Vdc Power Input
10 Signature Resistor Unique identifying resistor connected to ground
11 Remote I Adjust 0 to +4.64Vdc = 0 to 100%, Zin >1MΩ
Leave open for preset current limit @103% of
rated output current
12 I Monitor 0 to +5Vdc = 0 to 107.5%, Zout <10kΩ
13 V Monitor 0 to +5Vdc = 0 to 107.5%, Zout <10kΩ
14 E Out Monitor 1.00 Volt, 1GΩ/1.1MΩ divider with 10MΩ meter

LEGACY INTERFACE (L OPTION)

Pin Signal Parameters
1 Power Ground Return +24Vdc power ground return
2 + Power Input +24Vdc power input
3 I Sense See I Sense text and tables for details
4 Enable Input Low (<0.7V, Isink@1mA)=HV OFF,
High (open or >2V)=HV ON
5 Signal Ground Signal Ground
6 Remote Adjust Positive Polarity Unit:
0 to +4.64Vdc = 0 to 100% rated
voltage Zin>1MΩ
Negative Polarity Unit:
+5Vdc to 0.36Vdc = 0 to 100% rated
voltage Zin>1MΩ
7 +5V Reference Output +5Vdc ±2%. Zout = 475Ω
8 Power Ground Return +24Vdc Power Ground Return
9 + Power Input +24Vdc Power Input
10 Signature Resistor Unique identifying resistor connected to ground
11 N/C  
12 N/C  
13 N/C  
14 E Out Monitor 1.00 volt/kV, 1GΩ/1.1MΩ divider with 10MΩ meter

HIGH VOLTAGE MATING CONNECTOR

kV CONNECTOR
8 LGH1 SHV P.N. 304781-001
10 LGH1 SHV P.N. 304781-001
12 LGH1 SHV P.N. 304781-001
15 LGH1 SHV P.N. 304781-001
20 LGH1L SHV P.N. 304781-101

Tables & Diagrams

DIMENSIONS: in.[mm]

TOP VIEW

UMW UP TO 15KV

UMW High Voltage Power Supply (Image 2)

BOTTOM VIEW

UMW High Voltage Power Supply (Image 4)

SIDE VIEW

UMW High Voltage Power Supply (Image 6)

FRONT VIEW

UMW High Voltage Power Supply (Image 8)

TOP VIEW

UMW 20KV

UMW High Voltage Power Supply (Image 3)

PIN OUT

DETAIL A

ALL UMW UNITS

UMW High Voltage Power Supply (Image 5)

SIDE VIEW

UMW 20KV

UMW High Voltage Power Supply (Image 7)

FRONT VIEW

UMW 20KV

UMW High Voltage Power Supply (Image 9)

Note: All specifications are subject to change without notice. Please consult the PDF version of this datasheet for the most up-to-date revision.