













| |  PDF version“A” SERIES
 HIGH VOLTAGE POWER SUPPLY | 8 models from 0 to 62V through 0 to 6kV4, 20, or 30 watts of output powerMaximum Iout capability down to 0 VoltsWide input voltage rangeAvailable with Ripple Stripper® FilterIndefinite output short-circuit protectionOutput current monitorFixed-frequency, low-stored-energy design>430,000 hour MTBF @65°CUL, 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 VOLTAGE 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. | 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 464Ω output 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 in² and only 4.3 in³ of 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 +65°C. 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.  |  1800 OCEAN AVE., FRNT RONKONKOMA, NY 11779
 TEL 800-9HV-POWER TEL 631-471-4444 FAX631-471-4696
 www.ultravolt.com

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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 | .013 | .015 | .016 | .01 | .04 | .048 | .001 | .02 | .017 | .038 | .071 | .15 | .01 | .05 | .065 | .019 | .057 | .022 | .0185 | .073 | .112 | %V p-p | Ripple with –F-M Option | Full Load, Max Eout, 300pF bypass Cap | .002 | .004 | .006 | .0048 | .0056 | .006 | .0052 | .0028 | .005 | .001 | .0138 | .0016 | .0005 | .0008 | .002 | .0007 | .0038 | .004 | .0004 | .0088 | .0026 | .0003 | .0012 | .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 1.1MΩ to GND, - Output Models 1.1MΩ to +5 Vref | MΩ | Adjust Resistance | Typical Potentiometer Values | 10K to 100K (Pot across Vref. & Signal GND, Wiper to Adjust) | Ω | 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=+25°C, Initial Value | + 5.00 ± 2% | VDC | Output Impedance | T=+25°C | 464 ± 1% | Ω | Stability | Over Full Temperature Range | Figure F | Graph | Enable: | All Types | | Power Supply On | Floated, or voltage ≥ TTL High | +2.4 to 32 | VDC | Power Supply Off | Grounded, or voltage ≤ TTL Low | 0 to + 0.7 ± 0.2 (Isink 1mA minimum) | VDC | Temperature & Humidity: | Standard | -25PPM | | Humidity | All Conditions, Standard Package | 0 to 95% non-condensing | 0 to 95% non-condensing | | Operating | Full Load, Max Eout, Case Temp. | -40 to +65 | +10 to +45 | °C | Storage | Non-Operating, Case Temp. | -55 to +105 | -55 to +105 | °C | Coefficient | Over the Specified Temperature | ± 50 | ± 25 | PPM/ °C | Thermal Shock | Mil-Std-810, Method 503-4, Proc. II | -40 to +65 | -40 to +65 | °C | Altitude: | All Types | | All Conditions | Standard Package | Sea Level through Vacuum | | Shock & Vibration: | Standard | -C Option | | Shock | 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 ± 0.050 (94.0) | 4.75 ± 0.025 (120.7) | In (mm) | Width | Not including pins or mounting pts | 1.50 ± 0.050 (38.1) | 2.00 ± 0.025 (50.8) | In (mm) | Height | Not including pins or mounting pts | 0.77 ± 0.050 (19.6) | 1.00 ± 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) |
Typical Performance Characteristics: | |  Fig. A DC Efficiency vs. Input Voltage Range
|  Fig. B Input Current vs. Input Voltage Range
|  Fig. C Output Voltage vs. 12V/4 Watt Extended Input Voltage (Up to 65°C Chassis Mount w/o Heatsink)
|  Fig. D Output Voltage vs. 24V/20 Watt Extended Input Voltage (Up to 65°C Chassis Mount w/o Heatsink)
|  Fig. E Remote Control Characteristics
|  Fig. F Reference Stability
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PLASTIC CASE 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 optionsMETAL CASE 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)
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Connections 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. |
 | | Ordering InformationType: | 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 (12 V Only) | 4 | | Watts Output (24 V Only) | 20 | | Watts Output (24 V Only) | 30 | Case: | Plastic Case - Diallyl Phthalate | STD | | ‘Eared’ Chassis Mounting Plate | -E | | RF-Tight Aluminum Case | -C | Heat Sink: | .400” High (sized to fit case) | -H | Shield: | Six-sided Mu-Metal Shield | -M | Ripple Stripper®: | Integral Output Filter (see ”F” Series DS) | -F | Voltage Monitor: | Optional Eout Monitor | -Y5 | Iout Monitor Boost: | Boosted Iout Monitor Signal Level | -Y10 | Temp Coefficient: | 25PPM Temperature Coefficient | -25PPM |
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