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Ultravolt® EFL Series
Photo of XS Series Power Supply
   

Enhanced Floating Hot Deck Low-Voltage Power Supplies with Isolated Digital and Analog I/O

The EFL series of floating hot deck, low-voltage (LV) power supplies offers an integrated solution for systems requiring LV power and controls with high voltage isolation.  Combining a highly isolated, DC-to-DC multi-output low-voltage power supply (LVPS) with an advanced isolated digital and analog I/O topology, the EFL subsystem provides both power and controls to floating-hot-deck circuitry.  This solution, when combined with one or more UltraVolt HVPS or other circuitry, can provide high-performance solutions for a variety of applications.

Model-Specific Downloads

EFL series brochure     JAPANESE
EFL series data packet
Using the 15EFL isolated power supply
 
Typical Applications Features
  • Floating/stacked ion or e-beam biases
  • Floating filament bias
  • Floating gulsers and gated grids
  • Floating capacitance meters
  • Floating high side current monitors
  • Floating leakage testers
  • Precision analog control
  • Linearity of ±0.05% and accuracy of ±0.2%
  • 10ppm temperature coefficient
  • Isolated up to 15 kV or 30kV
  • Isolation resistance of 150 GΩ (15 kV) or 2 GΩ (30 kV)
  • 4 regulated floating LV power outputs
  • Isolated digital and analog I/O to and from floating hot deck

Local controls: reference

Parameter Conditions Models
Input power 12 W 24 W 36 W (15 kV only)
   Voltage range (VDC) Full power +12 ±5% +24 ±10% +24 ±10%
   Current (mA) Standby (disabled) < 150 < 100 < 100
   Current (A) No load < 0.50 < 0.50 < 0.50
   Current (A) Max load < 2.50 < 2.30 < 3.00
   AC ripple current (mA pk to pk) Nominal input, full load < 50 < 50 < 50
   Output impedance (Ω)   T = +25°C
   Stability (mV/°C) Over full temperature range 0.4
Local controls: reference All Types
   Output voltage (VDC) T = +25°C, initial value +5.1 ±2%
   Output impedance (Ω) T = +25°C 464 ±1%
   Stability (mV/°C) Over full temperature range 0.4
Local controls: LVPS enable/disable   All Types
   Power supply on Open, or a voltage above TTL High (Isource < 400μA) +3.2 to 5
   Power supply off Grounded, or a voltage below TTL low < 0.8 (Isink 1 mA min)
Input/output isolation    
    15 EFL 30 EFL
   Isolation voltage (kV) Continuous 150 30
   Isolation resistance (GΩ) All inputs to all outputs 150 2
   Leakage capacitance (pF) All inputs to all outputs < 40 std, < 50 "-E" < 40 std
Isolated power outputs 12 W 24 W 36 W (15 kV only)
   Output #1 power (W) Nominal input, max Eout 12 24 36
   Output #1 voltage (VDC) Nominal input voltage range +12 ±2% +24 ±2% +24 ±2%
   Output #1 current (A) Min to max 0 to 1 0 to 1 0 to 1.5
   Output #1 line regulation (VDC) Nominal input range, full load < 0.1% < 0.1% <0.1%
   Output #1 load regulation (VDC) No load to full load < 0.25% < 0.30% <0.40%
   Output #1 ripple (V pk to pk) Full load < 2.5% < 1.5% < 1.5%
   Output #2 and #4 voltage (VDC) Nominal input voltage range ±15 ±5% ±15 ±5% ±15 ±5%
   Output #2 and #4 current (mA) Min to max 0 to 50  0 to 50 0 to 50
   Output #2 and #4 line regulation (VDC) Nominal input range, full load < 0.3% < 0.3% < 0.3%
   Output #2 and #4 load regulation (VDC) No load to full load < 5% < 1% < 1%
   Output #2 and #4 ripple (V pk to pk) Full load < 2.5% < 2.5% < 2.5%
   Output #3 voltage (VDC) Nominal input voltage range +5.1±1% +5.1±1% +5.1±1%
   Output #3 current (mA) Min to max 500 500 500
   Output #3 line regulation (VDC) Nominal input range, full load < 1% < 1% < 1%
   Output #3 load regulation (VDC) No load to full load < 1% < 1% < 1%
   Output #3 ripple (V pk to pk) Full load < 4% < 4% 4 %

Isolated controls: TTL channel "up"

  Conditions All Types
   Local input Source voltage, sink current 0 ≤ 0.5 (Isink 3 mA min)
1 ≥ 2.4 (300 μA max or open collector) (VDC)
   Isolated output (VDC) Inverted and buffered TTL 1 ≥ 2.4, 0 ≤ 0.55 ± (sources 0.8 mA, sinks 3 mA)
   Baud rate (ms) Duty cycle < 15

Isolated controls: analog "Up"

  Conditions 12 V 24 V
   Local input voltage (VDC) Range 0 to +5 0 to +10
   Isolated output voltage (VDC) Range 0 to +5 0 to +10
   Local input impedance (Ω)   20.0 K 0.4
   Initial offset error (mV)   < ±2  
   Gain error (VDC) Full scale < ± 0.2%
   Linearity error (VDC) Full sacle < ±0.05%
   Stability 30 min warmup, per 8 h, per day < ±0.02%
   Temperature coefficient (ppm/°C) 0 to +55°C < ±10
   Bandwidth (Hz) Symmetric or asymmetric signal DC to 4
     

 

Accuracy of specifications in unlocked documents cannot be guaranteed. Please contact your AE representative to confirm specifications.