MPD Series
- Extremely Compact High Performance Module
- Digital or Differential Analog Voltage Program
- Standard RS-232/RS-485 Control
- 10 Watts Output Power
- High Stability, Low TC
- Digital Oscillator Provides Ultra Low Ripple and Noise, Down to 1/f Band
*Note: All specifications are subject to change without notice. Please consult the English PDF version of this datasheet for the most up-to-date revision.
Spellman MPD Series of High Voltage 10 Watt Modules
Spellman’s new MPD series are a family of high voltage 10 Watt modules that provide output voltages ranging from 2.5kV to 20kV.
The MPD series are high performance products designed with Spellman’s hybrid topology of linear and switch mode power conversion techniques delivering lower noise with higher efficiency. The MPD series produces excellent ripple and stability performance specifications from a compact footprint. The MPD series features a differential amplifier input for the voltage programming signal to improve immunity from external system noise and addressing any offset issues.
A fully featured remote user interface is provided via 15-pin D-type connector as well as RS-232/RS-485 serial interface. The unit can be full analog or full digital control defined by interface connector links.
Spellman’s proprietary HV technology coupled with SMT circuitry results in an ultra compact and lightweight module that is available as either a positive or negative supply that is ideal for OEM applications.
Typical Applications
- Photomultiplier Tubes
- Electrostatic Printing
- Electron and Ion Beams
- Scintillators
- Electronmultiplier Detectors
- Mass Spectrometry
- Microchannel Plate Detectors
- Electrostatic Lenses
- Nuclear Instruments
Specifications
(Ref. 128142-001 REV. E)
SPECIFICATIONS
Input Voltage:
+24 Vdc, ±2Vdc
Input Current:
≤1 amp maximum
Output Voltage:
5 models available from 2.5kV to 20kV
Output Polarity:
Positive or negative, specify at time of order
Power:
10 watts, maximum
Voltage Regulation:
Line: For a 1V line change 10ppm
Load: 0-100% load 10ppm
Current Limit:
110% of rated output current
Ripple:
See “drift, ripple and noise” table
Stability:
After one hour warm up period.
10ppm/hour
25ppm/8 hours
100ppm/1000 hours
Temperature Coefficient:
10ppm per degree C
Protection:
Arc and short circuit protected. Not designed to withstand continuous arcing
Environmental:
Temperature Range:
Operating: 0˚C to 50˚C
Storage: -35˚C to 85˚C
Humidity:
20% to 85% RH, non-condensing
Cooling:
Convection cooled
Dimensions:
2.5-10kV: 1.18˝ H X 2.75˝ W X 5.12˝ D (30mm x 70mm x 130mm)
15-20kV: 1.18˝ H X 2.75˝ W X 6.50˝ D (30mm x 70mm x 165mm)
Weight:
2.5/5/10kV:
14.82 oz. (420g)
15/20kV:
22.09 oz. (650g)
Interface Connector:
15 pin male D connector
Output Connector:
A captive 39.4˝ (1 meter) long HRG58 shielded HV cable is provided
Regulatory Approvals:
UL recognized component (RC), File E354595. Compliant to IEC/UL 61010-1 Safety requirements for electrical equipment for control and laboratory use; CAN/CSA-C22.2 No.61010-1. CE marked to EN 61010-1. UKCA marked to BS EN 61010-1. RoHS compliant.
As the unit is designed for incorporation within the users system it is not tested against any specific EMC standards. The user will need to take sensible EMC precautions when designing the unit in and verify the overall system EMC performance against any relevant standards.
MPD SELECTION TABLE
| Model | Output Voltage | Output Current | Ripple (Vpp) |
|---|---|---|---|
| MPD2.5*10/24 | 2.5kV | 4.00 mA | See table below |
| MPD5*10/24 | 5kV | 2mA | See table below |
| MPD10*10/24 | 10kV | 1mA | See table below |
| MPD15*10/24 | 15kV | 0.66mA | See table below |
| MPD20*10/24 | 20kV | 0.5mA | See table below |
MPD DRIFT, RIPPLE and NOISE
| Model | 3mHz-30mHz | 30mHz-3Hz | 3Hz-30Hz | 30Hz-300Hz | 300Hz-30kHz | 30kHz-3MHz |
|---|---|---|---|---|---|---|
| MPD2.5 | 10mV | 10mV |
10mV | 5mV | 5mV | 5mV |
| MPD5 | 10mV | 10mV | 10mV | 10mV | 10mV | 10mV |
| MPD10 | 20mV | 20mV | 20mV | 20mV | 20mV | 20mV |
| MPD15 | 30mV | 30mV | 30mV | 30mV | 30mV | 30mV |
| MPD20 | 40mV | 40mV | 40mV | 40mV | 40mV | 40mV |
MPD EXTERNAL INTERFACE—15 PIN MALE D CONNECTOR
| Pin | Signal | Parameters |
|---|---|---|
| 1 | Power Ground | Ground |
| 2 | +24Vdc Input | +24Vdc @ 1 amp maximum |
| 3 | Voltage Monitor Output | Voltage monitor 0-10Vdc for 0 to full scale output ±1% (wrt signal ground) Zout=10kΩ |
| 4 | Voltage Reference Output | 10Vdc @ 1mA maximum |
| 5 | Voltage Program Input | 0 to 10Vdc=0 to 100% rated output ±1%, Zin=10MΩ |
| 6 | Voltage Program Differential Amplifier Output |
0 to 10Vdc=0 to 100% rated output, Zout =10kΩ |
| 7 | Voltage Program Differential Amplifier Input—Positive |
0 to 10Vdc differential between pin 7 and pin 9 = 0 to 100% of rated output, diode clamped to ground, Zin =38kΩ |
| 8 | Current Monitor Output | 0-10Vdc for 0 to full scale output ±1% (wrt signal ground) Zout=10kΩ |
| 9 | Voltage Program Differential Amplifier Input—Negative |
0 to 10Vdc differential between pin 7 and pin 9 = 0 to 100% of rated output, diode clamped to ground, Zin =38kΩ |
| 10 | Voltage Program Digital Output |
0 to 10Vdc = 0 to 100% rated output, Zout =10kΩ |
| 11 | Analog Signal Ground | Analog signal ground for control and monitoring |
| 12 | Enable Input | Low = Enable, TTL, CMOS, open collector compliant |
| 13 | Digital Mode | RS-232 or RS-485 configuration Low = RS-485, Open circuit = RS-232 |
| 14 | RS-232 TxD/RS-485 (-) | Transmit data (output) wrt pin 1 or RS-485 inverting |
| 15 | RS-232 RxD/RS-485 (+) | Receive data (input) wrt pin 1 or RS-485 non inverting |
Digital Control – Connect pin 5 to pin 10
Analog Control – Connect pin 5 to pin 6
Tables & Diagrams
DIMENSIONS: in.[mm]
FRONT VIEW
BOTTOM VIEW
SIDE VIEW
Frequently Asked Questions
What Is a Safe Level of High Voltage?
Where Can I Obtain Information on High Voltage Safety Practices?
What Kind of High Voltage Connector Do You Use on Your Supplies?
What Do You Mean That the Output Side of the High Voltage Cable on Most Standard Products Is “Unterminated”?
How Should I Ground Your Supply?
Why Is Arcing an Issue for a High Voltage Power Supply?
