REMOTE CONTROL:
The “A” Series is remotely programmed with 0 to +5 VDC
to produce an output voltage. Input may be from a control
voltage, a DAC, or from a variable or fixed resistor. On a
negative output converter the programming logic of the remote
adjust would be inverted, i.e.: +5 to 0VDC. Connections are on
the converter for the internal reference, analog remote adjust
and the signal ground. The reference is +5.0VDC,
temperature compensated with a 464output impedance.
See Figure E & F or Application Note 1 for more information.
STANDBY MODE:
The “A” converters also have an enable function. When
the enable is TTL 0 (<+0.7V Isink=1mA) the converter is in a
standby mode and input current is reduced to <30 mA.
All functions other than the internal reference are shut down.
If the enable pin is left unconnected, TTL 1, or at greater
voltages up to +32VDC the converter operates normally. The
open circuit output voltage from the Enable pin is <+5VDC. In
the inhibit mode, 1 mA will have to be sunk for proper
shutdown.
MECHANICAL:
“A” Series converters are in PCB mountable plastic cases
requiring a footprint of 5.5 in2and only 4.3 in3of volume.
Mounting plates and brackets are available for chassis
mounting. This Series is also available in an RF-tight metal
PCB/chassis mount package. See Application Note 6 for
thermal considerations and mounting configurations. All
models are available with optional, six-sided, wrap-around
Mu-Metal Shielding.
ENVIRONMENTAL:
The “A” Series provides full power operation at case
temperatures from -40 to +65oC. All units receive a 24-hour
burn-in prior to final testing. Extended temperature range is
available along with other enhanced capabilities. Please
contact the factory.
8 models from 0 to 62V through 0 to 6kV
4, 20, or 30 watts of output power
Maximum Iout capability down to 0 Volts
Wide input voltage range
Available with Ripple Stripper®Filter
Indefinite output short-circuit protection
Output current monitor
Fixed-frequency, low-stored-energy design
>430,000 hour MTBF @65oC
UL, CUL, IEC-60950-1, and Demko Recognized
GENERAL INFORMATION:
The “A” Series of high-voltage, regulated DC-DC
converters addresses the needs of the miniature-PCB-mount-
regulated-high-voltage-power-supply user. Designed and built
utilizing state-of-the-art power conversion topology, these
units feature surface mount technology and encapsulation
techniques providing high reliability and low cost.
DESIGN METHODOLOGY:
The “A” converters utilize a dual-ended forward converter
topology with a nominal switch frequency of <100kHz. A
precision reference is provided so the remote control can
program the power supply for a specific voltage. Once input
voltage stabilizes, under-voltage lockout is released. As soon
as enable is raised above a TTL 1, the converter begins to
switch. The soft-start circuit brings the converter to full power
over a 1mS period, reducing surges on the source supply. A
constant-frequency PWM regulation system controls the
MOSFET push-pull power stage, which drives the high voltage
transformer. The power stage is protected from output current
overloads or short circuits via a secondary current limit circuit.
High voltage is developed by a multistage multiplier while
feedback voltage is developed and sent to the CTRL circuit to
maintain regulation. Internal filters are provided to reduce
input current ripple and output voltage ripple.
WIDE INPUT RANGE:
The “A” Series is designed for full power operation at up
to 90% efficiency. A wide input range of +11 to +16VDC or +23
to +30VDC will maintain full power output without derating.
The derated input range is +9 to +32VDC. See Application
Note 16 for protection information.
WIDE OUTPUT RANGE:
The “A” Series is a non-isolated, unipolar converter.
Positive or negative output must be specified. Output voltage
is adjustable from 0 to 62, 125, 250, 500, 1kV, 2kV, 4kV, or
6kV. As the output voltage is reduced towards 0, the maximum
current capability remains unchanged.
OUTPUT CURRENT MONITOR:
The “A” Series features an output current monitor. Current
from the high-voltage multiplier can be monitored by reading
the voltage appearing between Output Monitor pin 3 and
Signal Ground Return pin 5. Internal voltage dividers create a
small linear offset voltage. See Application Note 13.
“A” SERIES
HIGH VOLTAGE POWER SUPPLY
1800 OCEAN AVE., FRNT
RONKONKOMA, NY 11779
TEL 800-9HV-POWER
FAX 631-471-4696
www.ultravolt.com
“Making High Voltage Easier!”
®9
Typical Characteristics:
Parameter Conditions Models Units
Input: 12V 24V
Voltage Range Full Power + 11 to 16 + 23 to 30 VDC
Voltage Range Derated Power Range + 9 to 32 + 9 to 32 VDC
Current Standby / Disable < 30 < 30 mA
Current No Load, Max Eout < 100 < 90 mA
Current Max Load, Extended Input Voltage Figures A & B Figures A & B Graph
AC Ripple Current Nominal Input, Full Load < 80 < 80 mA p-p
Output: 1/16A 1/8A 1/4A 1/2A 1A 2A 4A 6A
Voltage Range Nominal Input 0 to 62 0 to 125 0 to 250 0 to 500 0 to 1,000 0 to 2,000 0 to 4,000 0 to 6,000 VDC
Nominal Input Voltage / Model 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24 12 24 24 VDC
Power Nominal Input, Max Eout 4 20 30 4 20 30 4 20 30 4 20 30 4 20 30 4 20 30 4 20 30 4 20 30 Watts
Current Iout Entire Output Voltage Range 64 320 480 32 160 240 16 80 120 8 40 60 4 20 30 2 10 15 1 5 7.5 0.67 3.3 5 mA
Ripple Full Load, Max Eout .02 .03 .05 .02 .015 .04 .01 .14 .2 .003 .02 .03 .02 .10 .15 .01 .05 .15 .025 .075 .18 .035 .20 .30 %V p-p
Ripple with –F-M Option Full Load, Max Eout, 300pF bypass Cap .002 .004 .006 .008 .004 .006 .002 .004 .005 .001 .002 .002 .0004 .0008 .002 .0005 .003 .004 .0005 .003 .004 .0005 .002 .004 %V p-p
Dynamic Load Regulation ½ to Full Load, Max Eout per .1mA <.12 <.12 <.12 <.12 <.12 <.12 <.20 <.20 <.20 <.50 <.50 <.50 <1.0 <1.0 <1.0 <2.0 <2.0 <2.0 <4.0 <4.0 <4.0 <6.0 <6.0 <6.0 V pk
Voltage Derating Max Iout, Extended Input Voltage Figures C & D Graph
Line Regulation Nom. Input, Max Eout, Full Power < 0.01 % VDC
Static Load Regulation No Load to Full Load, Max Eout <0.01% VDC
Stability 30 Min. warmup, per 8 hr/ per day <0.01% / <0.02% VDC
Remote Programming: All Types
Input Impedance Nominal Input + Output Models 1.1M to GND, - Output Models 1.1M to +5 Vref M:
Adjust Resistance Typical Potentiometer Values 10K to 100K (Pot across Vref. & Signal GND, Wiper to Adjust) :
Adjust Linearity 0% to 100% Figure E Graph
Adjust Voltage Referenced to signal ground Figure E (0 to +5 VDC) Graph
Adjust Logic 0 to +5 for +Out, +5 to 0 for -Out +4.64 VDC for +Output or +0.36 for -Output = Nominal Eout
Reference: All Types
Output Voltage T=+25qC, Initial Value + 5.00 r 2% VDC
Output Impedance T=+25qC 464 r 1%
Stability Over Full Temperature Range Figure F Graph
Enable: All Types
Power Supply On Floated, or voltage t TTL High +2.4 to 32 VDC
Power Supply Off Grounded, or voltage d TTL Low 0 to + 0.7 r 0.2 (Isink 1mA minimum) VDC
Temperature: All Types
Operating Full Load, Max Eout, Case Temp. -40 to +65 qC
Storage Non-Operating, Case Temp. -55 to +105 qC
Coefficient Over the Specified Temperature r 50 PPM/ qC
Thermal Shock Mil-Std-810, Method 503-4, Proc. II -40 to +65 qC
Altitude: All Types
Operating Standard Package Sea Level through Vacuum
Non-operating Standard Package Sea Level through Vacuum
Shock & Vibration: Standard -C Option
Shoc
k
Mil-Std-810, Method 516.5, Proc. IV 20 40 G's
Vibration Mil-Std-810, Method 514.5, Fig. 514.5C-3 10 20 G's
Packaging: Standard -C Option
Material Outer construction Plastic (DAP) ASTM-D-5948 Aluminum Alloy 5052-H32, Finish: MIL-C-5541 Class 1A
Length Not including pins or mounting pts 3.70 r 0.050 (94.0) 4.00 r 0.025 (101.6) In (mm)
Width Not including pins or mounting pts 1.50 r 0.050 (38.1) 2.00 r 0.025 (50.8) In (mm)
Height Not including pins or mounting pts 0.77 r 0.050 (19.6) 1.00 r 0.025 (25.4) In (mm)
Volume Not including pins or mounting pts 4.30 (70.5) 8.00 (131.1) In3(cc)
Weight Overall 5.0 (142) 10.0 (284) Oz (g)
Specifications subject to change without notice
“A” SERIES
HIGH VOLTAGE POWER SUPPLY
TEL 800-9HV-POWER or 800-948-7693 or 631-471-4444 FAX 631-471-4696www.ultravolt.com
1800 Ocean Ave., Frnt, Ronkonkoma, NY 11779
“Making High Voltage Easier!”
®
10
Typical Performance Characteristics:
PERCENT EFFICIENCY
INPUT VOLTAGE
24VDC 20W MODELS
12VDC 4W MODELS
20 25 30
10 15
20 25 30
10 15
% OUTPUT VOLTAGE
INPUT VOLTAGE
Fig. A
DC Efficiency vs. Input Voltage Range
Fig. C
Output Voltage vs. 12V/4 Watt Extended Input Voltage
(Up to 65oC Chassis Mount w/o Heatsink)
% OUTPUT VOLTAGE
REMOTE ADJUST VOLTAGE
– OUTPUT
+ OUTPUT
Fig. E
Remote Control Characteristics
INPUT CURRENT (AMPS)
INPUT VOLTAGE
20 25 30
10 15
Fig. B
Input Current vs. Input Voltage Range
Fig. F
Reference Stability
Fig. D
Output Voltage vs. 24V/20 Watt Extended Input Voltage
(Up to 65oC Chassis Mount w/o Heatsink)
JUNCTION TEMPERATURE
REFERENCE CHANGE - mV
-50 -25 025 50 75 100 125
20 25 30
10 15
% OUTPUT VOLTAGE
INPUT VOLTAGE
“A” SERIES
HIGH VOLTAGE POWER SUPPLY
TEL 800-9HV-POWER or 800-948-7693 or 631-471-4444 FAX 631-471-4696www.ultravolt.com
1800 Ocean Ave., Frnt, Ronkonkoma, NY 11779
“Making High Voltage Easier!”
®
11
Thermal Derating PCB
Mount w/o Heatsink @65oC
Voltage
Derating
Voltage Derating
Thermal Derating
PCB
Mount w/o
Heatsink @65oC
Watts Output (24V only)
Watts Output (24V only)
Plastic Case - Diallyl Phthalate
‘Eared’ Chassis Mounting Plate
RF-Tight Aluminum Case
.400” High (sized to fit case)
Six-Sided Mu-Metal Shield
Integral Output Filter (see ”F” Series DS)
CONSTRUCTION:
Aluminum box
Chem film per MIL-C-5541
Class 1A
TOLERANCE:
Overall ±0.025” (0.64)
Pin to Pin ±0.015” (0.38)
Hole to Hole location ± 0.025” (0.64)
Type: 0 to 62 VDC Output 1/16A
0 to 125 VDC Output 1/8A
0 to 250 VDC Output 1/4A
0 to 500 VDC Output 1/2A
0 to 1,000 VDC Output 1A
0 to 2,000 VDC Output 2A
0 to 4,000 VDC Output 4A
0 to 6,000 VDC Output 6A
Input: 12VDC Nominal 12
24VDC Nominal 24
Polarity: Positive Output -P
Negative Output -N
Power: Watts Output (12V only) 4
20
Ordering Information
1 - Input Power Ground Return
2 - Positive Power Input
3 - Iout Monitor
4 - Enable/Disable
5 - Signal Ground Return
6 - Remote Adjust Input
7 - +5VDC Reference Output
8 - HV Ground Return
9 -
HV Ground Return or Eout Monitor (-Y5)
10 - HV Output
11 - HV Output
All grounds joined internally. Power-
supply mounting points isolated from
internal grounds by >100kΩ, .01uF / 50V
(Max) on all models except -M, -C, and
-M-E configurations which are 0Ω.
Connections
METAL CASE
Voltage
Model
Input
Type
PLASTIC CASE
30
Case: STD
-E
-C
Heat Sink: -H
Shield: -M
Ripple Stripper
®
:-F
Option (Case)
Power
Polarity
Example: 1/2A24-P20-C
CONSTRUCTION:
Epoxy-filled DAP box
certified to ASTM-D-5948
TOLERANCE:
Overall ±0.050” (1.27)
Pin to Pin ±0.015” (0.38)
Mounting hole location ±0.025” (0.64)
MOUNTING:
#2-56 x 0.30 (7.62)
2 places threaded post
may not be flush to cover
PINS:
Gold-plated 0.025 (0.64) sq.
The center of the pins and mounting holes
is located from the center of pin 1
Pins 1 thru 7 spacing 0.200 (5.08) on
center, height from cover 0.470 (11.7) min
Pins 8, 9, and 10, 11 spacing 0.100 (2.54)
on center, height from cover 0.470 (11.7) min
NOTE:
20W and 30W versions are an
additional 0.062” (1.57) in height.
-M equipped units are an
additional 0.030” (0.76) in height.
Contact UV customer service for
drawings on models equipped with
-E or -H options.
Optional Eout Monitor
Voltage Monitor: -Y5
Boosted Iout Monitor Signal Level
Iout Monitor Boost: -Y10
“A” SERIES
HIGH VOLTAGE POWER SUPPLY
Copyright 1991-2006, UltraVolt, Inc.
Rev. Q 10/06
www.ultravolt.com
1800 Ocean Ave., Frnt, Ronkonkoma, NY 11779
“Making High Voltage Easier!”
®
IEC-60950-1
12
Downloadable AutoCAD drawings (complete
with mounting & pin information), Interactive
Product Viewer, and 3D models are available
online at: www.ultravolt.com/drawings.htm