MSA Series

  • Compact High Performance Module
  • Variable Voltage Programming
  • 0.9 Watts Output Power
  • Voltage Monitor
  • Arc and Short Circuit Protected

*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.

 

RoHs Compliant logo

MSA

The MSA Series are compact printed circuit board mountable (PCB) high voltage power supply module available from 1kV to 3kV with either a positive or negative output polarity. The MSA Series feature 0-10Vdc variable voltage programming that equals 0-100% of rated output voltage. A voltage monitor is provided where 0-10Vdc equals 0-100% of rated output voltage. Additionally a status signal and enable signal provides simple control of the power supply. All units have in-built protection against fault conditions.

The MSA Series are intended for general use where a compact high performance PCB mountable power supply is required, like driving an electron multiplier in a mass spectrometer. The aluminium enclosure helps shield the unit reducing radiated noise.

Typical applications:

  • Photomultiplier Tubes
  • Electron Multiplier
  • Mass Spectrometry
  • Electrostatic Lenses
  • Nuclear Instruments

Especificaciones

(Ref. 128018-001 REV. A)

SPECIFICATIONS

Input Voltage:

+24 Vdc, ±2Vdc

Input Current: 

150mA maximum input current
30mA pk-pk maximum input current ripple

Output Polarity: 

Positive or negative, specify at time of order

Output Power: 

0.9 watts, maximum

Output Voltage Accuracy: 

±1%

Voltage Regulation:

Line: 21.6Vdc to 26.4Vdc, ±0.02%
Load: 0-100% rated load, ±0.02%

Stability: 50ppm/8hrs after one hour warm up period 

Temperature Coefficient:

25ppm per degree C

Settling Time: After Power On or Enable

100 milliseconds, typical
When power is removed the unit will decay to <±60 volts within 2 seconds

Protection: Arc and short circuit protected.

Not designed to withstand continuous arcin

Environmental:

Temperature Range: 
Operating: 0˚C to 60˚C
Storage: -40˚C to 70˚C

Humidity:
95% RH, non-condensing 

Cooling: Convection cooled 

Dimensions:

 2.73˝ L x 2.21˝ W x 1.21˝ D (69.4mm x 56.2mm x 30.7mm)

Humidity: 0 to 90% non-condensing. 

Dimensions:

Up to 1000Vdc: .87”H x 2.1”W x 3.1”D (23mm x 53mm x 78mm). 
1000V to 3000Vdc: 1.1”H x 2.36”W x 4.2”D (28mm x 60mm x 106mm). 

Weight: 

7.0 oz. (200g)

Regulatory Approvals: 

Designed to meet EN 61010-1, UL 61010A-1 and CAN/CSA-22.2 No. 1010.1
As the unit is intended for incorporation into end users equipment it will not be tested as a standalone unit to meet the EMC directive. The user will need to follow sensible EMC precautions in using the unit. The unit is compliant with the EU RoHS directive.

 

 

MSA SELECTION TABLE

Model Output Voltage Output Current Ripple (Vpp)
MSA1*24 0-1kV 0-900μA 30mV
MSA2*24 0-2kV 0-450μA 40mV
MSA3*24 0-3kV 0-300μA 50mV

1) Replace the * with “P” for positive output polarity and “N” for negative output polarity.

2) The ripple figure includes random non switch related noise, noise related to the oscillator, switching and feedback control circuitry and noise associated with the rectified primary switching frequency.

 

LOW VOLTAGE SIGNAL PINS FOR POWER AND CONTROL

PIN SIGNAL LEVEL SIGNAL PARAMETERS
1 Enable TTL Enable = Low (≤1.2V). Disable = High
(≥2.4V), when Enable pin is NC, 10kΩ pull
up to +5V ±10%
2 Status 0V/5V OK = 11kΩ pull up to +5.1V ±10%. Fault =
≤0.1V, Zout = 1kΩ
3 Voltage Program 0-10V 0 to +10Vdc = 0 to 100% rated output
voltage, Accuracy ≈±1%. Zin ≥10kΩ.
4 Voltage Monitor 0-10V 0 to +10Vdc = 0 to 100% rated output
voltage, Zout ≥10kΩ.
5 Input Voltage 24Vdc Power Input
6* Signal Ground 0V Ground reference for control and
monitoring signals
7* Power Ground 0V Power Return

To reset the unit after a fault condition, Pin1 (Enable) must be set high for at least 10 seconds

* pins 6 & 7 are linked internally

 

HIGH VOLTAGE CONNECTION DETAIL

PIN SIGNAL SIGNAL PARAMETERS
8 High Voltage Output 0-100% Rated Output. !!Danger: High Voltage!!

 

Tablas y Diagramas