IXYS PVX-4110 Datasheet
THE PULSE OF THE FUTURE
DIRECTED
ENERGY
INCORPORATED
PVX-4110
±10,000V PULSE GENERATOR
• 0 to ±10,000V Pulse Output
• <60ns Rise And Fall Times
• <200ns to DC Pulse Width
• Optimized to drive deflection
plates, grids and other
capacitive loads
• Protected against arcs, short
circuits and load transients
• Voltage And Current Monitor
Outputs
The PVX-4110 pulse generator produces fast, high voltage wave forms to 10,000V. Optimized for high impedance capacitive loads, the PVX-4110 is well suited for driving extraction grids and deflection plates for electrostatic
modulation of particle beams in time-of-flight mass spectrometers and accelerators. Its robust and versatile design
also makes it well suited for pulsing or gating power tube
grids, Pockels cells and Q Switches, acoustic transducers,
microchannel plates, photomultiplier tubes and image intensifiers. The exceptional pulse fidelity of the PVX-4110
will optimize the performance of any system in which it is
used.
The PVX-4110 generates an output voltage pulse of
10,000 volts with rise and fall times less than 60ns, with
very flat voltage pulses to DC into a capacitive load. It can
generate singled-ended output pulses from ground to
+10,000V or from ground to –10,000V, and can also generate pulses originating from a DC voltage offset from
ground by using both VLow and VHigh power supply inputs. This offset can be from –10,000V to +10,000V, with
a maximum power supply voltage differential of ≤10,000V.
The PVX-4110 requires a TTL gate signal, a high voltage
DC power supply and optional DC offset supply inputs.
The output pulse width and fre quency are controlled by
the gate signal. The pulse output voltage is controlled by
the amplitude of the input DC power supplies .
When the input gate is high, the V
HIGH
supply is connected
to the output. When the input gate is low, the V
LOW
supply
is connected to the output. Therefore the PVX-4110 can be
used to generate a negative-going pulse by logically
inverting the input gate, so that the input gate is high until
the unit is pulsed. When the input gate goes low, the V
LOW
input supply is connec ted to the output, thereby generating
a negative-going pulse.
The PVX-4110 features front panel indicator LEDs to monitor the status of the pulse generator. Front panel voltage
and current monitors provide a straightforward means to
view the output voltage and current waveforms in real-time,
eliminating the need for an external high voltage oscilloscope probe.
The pulse generator is a direct-coupled, air-cooled solid state half-bridge (totem pole) design, offering equally fast
pulse rise and fall times, low power dissipation, and virtually
no over -shoot, under-shoot or ringing. It has over-current
detection and shut -down circuitry to protect the pulse generator from potential damage due to arcs and shorts in the
load or interconnect cable. All control and protection logic
circuitry, support power, energy storage and output network
are incorporated into the PVX-4110. It can be connected
directly to the load, and does not require series or shunt
resistors, impedance-matching networks between the
pulser and the load, or additional energy storage (capacitor
banks). All of this is taken care of within the PVX-4110.
THE PULSE OF THE FUTURE
Directed Energy, Inc.
An IXYS Company
2401 Research Blvd., Suite 108
Fort Collins, CO USA 80526
970-493-1901 Fax: 970-493-1903
Email: deiinfo@directedenergy.com
Web: http://www.directedenergy.com
SPECIFICATIONS
OUTPUT (Measured into a 50pF load connected with 4ft RG-11 cable)
Maximum Value
±10,000 Volts (V
High
- V
Low
)
Minimum Value 0 Volts
Means Of Adjustment Controlled By Power Supply Input Voltages
Pulse Rise And Fall Time <60ns (10% to 90%)
Pulse Width <200ns to DC, Controlled by Input Gate
Pulse Recurrence
Frequency (PRF)
Single shot to >10KHz, Controlled by Input
Gate
(1)
Max. Average Power
100W (V
High
+ V
Low
)
(1)
Max. Duty Cycle Continuous
Droop <1%
Over/undershoot <5%
Jitter <1ns shot -to-shot
Output Connector LEMO ERA.3S.415.CTL, Rear Panel
Output Cable 4 Ft RG-11
INPUT DC VOLTAGE +VIN (V
High
)
Absolute Max. Value +10,000 Volts
Absolute Min. Value -10,000 Volts
Relative Max. Value
+10,000 Volts over V
Low
Voltage
Relative Min. Value
V
Low
Voltage
Input Connector LEMO ERA.3S.415.CTL, Rear Panel
INPUT DC VOLTAGE -VIN (V
Low
)
Absolute Max. Value +10,000 Volts
Absolute Min. Value -10,000 Volts
Input Connector LEMO ERA.3S.415.CTL, Rear Panel
GATE
Gate Source & Connector +5V ±1V into 50Ω, into front panel BNC connec-
tor
VOLTAGE AND CURRENT MONITORS
Voltage Monitor 2000:1 into 50Ω, BNC Connector
Current Monitor 10A/V into 50Ω, BNC Connector
GENERAL
Input AC Power 90-240VAC 50/60Hz
Dimensions 19”W x 7.0”H x 21.5”D (48.25cm W x 17.8cm H x
54.6cm D)
Weight Approximately 24 lbs (11 Kilograms)
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
9200-0211 REV 2
These specifications are measured driving a 50pF load connected with 4 feet of RG-11 cable, at
10,000V output. However the PVX-4110 can drive loads of a few picofarads to several hundred
picofarads of capacitance , limited by its maximum power dissipation capability
(1)
. At lower load
capacitances and/or voltages less then 10,000V, the PVX-4110 can operate at continuous pulse
recurrence frequencies greater than 10KHz. The PVX-4110 can also drive resistive or inductive
loads, within limitations. Contact DEI for additional information and applications assistance.
(1)
The power dissipated in the PVX-4110 when driving a capacitive load is defined by the formula CV2F, where C is the total load capacitance, including the capacitance of the load, interconnect cable, and the internal capacitance of the PVX-4110, V is the pulse voltage, and F is
the pulse repetition frequency (or the total pulses per second). (For these calculations, the internal capacitance of the PVX-4110 is 50pF, and RG-11 cable is 21.5pf/foot.) Given the maximum
dissipation of 100W, the maximum load capacitance, frequency and/or voltage at which the
PVX-4110 can operate can be approximated using this formula. This formula also approximates
the high voltage power supply requirements needed to drive a given load at a specific voltage
and frequency. This formula is not applicable when driving resistive or inductive loads.
~54ns Typical Rise Time,
10,000V, 120pF Load
Typical Output Waveform,
10KHz, 10,000V, 12 0pF Load
~136ns Typical Minimum Pulse Width,
10,000V, 150pF Load
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