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Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter ■ Features ･Ultralow ripple noise 10mVp-p ･ON/OFF Control ･Use of pentahedron metal shield case ･Control voltage 0 to +6V ･PCB mount type ･Built-in over current protection circuit ･High reliability and long life ･Output capacity 1.5W ･Supports 24V input with an external DC-DC converter ■ Model/Standard ■ Specifications Note 2 Output voltage is controlled by applying Vcont voltage. Apply voltage to the Vcont terminal by either variable resistor or external voltage to control output voltage. Note 2 When Vcont voltage is zero, output voltage (output residual voltage) will be within 0.5% of maximum output voltage (input/output rating). Note 3 Details are subject to change for improvement, etc., without prior notice. ■ Test circuit ■ Block diagram (1) The input-output ground lines and the case are connected (1) internally. (2) Vref is 6V (when external VR is 5KΩ) (3) ON/OFF can be controlled by a transistor. ･World's smallest size (about a 60% reduction from comparable conventional models) ･Adjustable voltage by variable resistor or external voltage ･Adjustable output voltage from 0 to 100% With a pentahedron metal shield case, ripple noise has been reduced to as low as 10mVp-p. Output voltage can be adjusted by external voltage or external variable resistor. The built-in short circuit and overcurrent protection provide high reliability and a long life. Note 1: See P5 on how to use with a 24V input voltage. Output V (Vdc) *1 OHV Series 11.0-13.0 0 to +1000 666.7 Output I (mA) Load Resistance (KΩ) min Input I (A) typ Ripple Noise (mVp-p) typ Input V (Vdc) 11.0-13.0 0 to -1000 0.28 0.28 0.28 11.0-13.0 11.0-13.0 0 to +1500 0 to -1500 0-1.5 0-1.5 0-1.0 0-1.0 666.7 1500 1500 0-0.7 2857 Models Line regulation Load regulation Temperature regulation Over current protection Output voltage setting accuracy Operating temp range Storage temp range Operating humidity range Isolation between input and 0.02% typ. (for a load current regulation of 0 to 100%) 70ppm/°C typ. (for temperature regulation of -10°C to +50°C) -10°C to +50°C (no temperature derating needed Non-isolated type (2pin through 6pin are connected inside) 20% to 95% RH (no condensation) -25°C to +85°C Either with 0V to +6V external voltage or a 5KΩ external variable resistor ±2% or less (when controlling a 6.0V external voltage) Drooping characteristic, built-in automatic return circuit, activated at 105% or more 0.01% typ. (for a line regulation of 11.0 to 13.0V) Between 2pin and 5pin, OFF when opened and ON when short-circuited Output voltage control MTBF expectation Min. 390,000 to 400,000H (calculated from Bellnix MTBF calculation table) ON/OFF control output 12V +Vin -Vin Vout (+ or -） Com(Vout) VcontVref Load DC-AC converter High-voltage oscillation transformer High-voltage rectifier Control IC Output voltage control circuit Over current protection circuit Reference voltage generator Voltage detection circuit case External voltage (0 to 6V) or VR （5kΩ） 5ON/OFF SW1 Open=OFF Short=ON ON/OFF Control 12V SW1 Load SW1 Open=OFF Short=ON Output voltage control (0V to 6V applied) C1=47μF (OPEN) +Vin -Vin Vout (+ or -） Com (Vout) Vref VcontON/OFF CASE 1000V, 1500V, 2000V VHV Series The VHV series is our new line of medium-high voltage DC-DC converters featuring an ultracompact size with the footprint reducedby about 60% as compared to conventional models. VHV12-1.0K1500P 0.28 5 VHV12-1.5K1000N VHV12-2.0K700P 11.0-13.0 0 to +2000 2857 0.28 10 VHV12-1.0K1500N VHV12-1.5K1000P VHV

■ Shape, dimensions and terminal composition Weight: TBD Unit: mm Unspecified dimensional tolerance ±0.5 1) Terminal Material: Phosphor bronze Treatment: Ni base Au plating 2) Case Material: Brass Treatment: Nickel plating ■ Standard method of use ■ ON/OFF Control Output voltage can be turned ON/OFF by closing/opening between the ON/OFF terminal and -Vin terminal. Ensure that there is no chattering to the ON/OFF terminal which affects output voltage. Output residual voltage is 0.5% or less when output is OFF under ON/OFF control (at the rated input-output). As the ON/OFF terminal is pulled up to +Vin inside the power supply, pay attention to the voltage of elements (photocoupler, transistor, etc.) to switch the ON/OFF terminal. Short-circuit when ON/OFF is not controlled. Between ON/OFF terminal (5) and -Vin terminal (2) (1) Output OFF when opened (2) Output ON when short-circuited (0 - 0.4V, 1mA max.) Pin-NO. Pin name Com (Vout) ON/OFF Vref Vcont -Vin +Vin

7 Vout (+ or -)

Open=OFF Short=ON Output voltage control (0V to 6V applied) C1=47μF (OPEN) +Vin -Vin Vout (+ or -） Com (Vout) Vref VcontON/OFF CASE -Vin ON/OFF (5) (2) Non-isolated type -Vin ON/OFF (5) (2) Isolated type 30.0 0.5 2.0 16.044.0±0.5 0.5 4.0 35.5 2×CASE PIN 7.0 7-0.64□L=4.2 min 7.62 ±0.3 7.62 ±0.3 5.08 ±0.3 2.54±0.1 2.54×4=10.16 VHV The VHV series does not basically require additional parts, but add capacitor C1 to the input terminal if input impedance is high due to a long distance between the power supply and converter,the input line is thin, a filter is inserted on the inputside, etc. When fitting a capacitor, try to add onthe converter terminal side so as to reduce leadinductance.

■ Overcurrent protection circuit ■ Setting and adjustment of output voltage ■ Recommended pattern [Top View] [mm] (i) (ii) ● (iii) The overcurrent protection circuit shows a drooping characteristic. Ensure that the load to be used is at least with the minimum resistance specified for each series. When mounting onto a double-sided board, make the land on the parts surface of the high voltage output terminal as small as possible. Use a variable resistor with a good temperature coefficient. In the above characteristic graph (output voltage - VR resistance characteristic), the resistance R1 and R2 are a guideline. When setting output at a fixed voltage with a fixed resistor, do so after determining R1 and R2 using a variable resistor. It is preset that when the resistance of the variable resistor is 5.0KΩ, 6.0V is applied to the Vcont terminal to obtain 100% output voltage. Since the tolerance of the resistance value largely affects the maximum output voltage, set the resistance value at 5.0KΩ±5%. Do not apply 6V+3% or more voltage to Vcont.

0 Output current (lo) 100%

100% output 50% output Output voltage setting value (%) 12V SW1 Load SW1 Open=OFF Short=ON Output voltage control (0V to 6V applied) C1=47μF (OPEN) +Vin -Vin Vout (+ or -) Com (Vout) Vref VcontON/OFF CASE 100% 80% 60% 40% 20% Output voltage – VR resistance characteristic VR resistance R1 5kΩ R2 0kΩ 0kΩ 5kΩ Output voltage (%) 7- Hole dia. : φ1.2 2- Hole dia. : φ2.5 17.75 8.75 7.62 ±0.3 7.62 ±0.3 5.08 ±0.3 2.54±0.1 2.54×4=10.16 6.75 17.75 Output voltage – output control voltage characteristic 100% 80% 60% 40% 20% 6V4.5V3V1.5V Output control voltage Output voltage (%) The VHV series has a built-in over current protection circuit against overload and load short-circuit. The circuit reduces output voltage in caseof overload or load short-circuit and automaticallyreturns the output to normal when the cause iseliminated. The output voltage of the VHV series can be set and adjusted by external voltage and external variable resistor. VHV The VHV series uses a metal case. When mounting onto a double-sided board, wiring to this converter should be on a soldered surface. When wiring, pay enough attention to creepage distance because of the high voltage of this converter. Connect the case of the VHV series to -Vin or Com. Try to reduce impedance to the ground as much as possible.

■ ■ Recommended soldering conditions Observe the following conditions for soldering each part. (i) Soldering iron 340 - 360°C 5 seconds (ii) Dip solder bath 230 - 260°C 10 seconds ■ Temperature derating ■ Protection against reverse connection This terminal is used for controlling output voltage with a variable resistor. Vref outputs a reference voltage of 6V. A 5KΩ external resistor is used in this case. Description of Vref terminal (reference voltage output) Since resistance value (tolerance) of an external resistor affects the Vref terminal voltage preset value and determines output voltage, ensure that the resistor has high accuracy of 5KΩ±5%. The type of the variable resistor (5KΩ) does not matter, but those of a good temperature coefficient are recommended. Reverse connection of input voltage may result in the breakage of a converter. If there is any possibility for a reverse connection, add a diode and a fuse to the input terminal as shown below. Vout (com) VcontVref Vref電圧 : 6±0.3V 基準電圧 発生回路 外部可変抵抗器 (5.0KΩ) OHVシリーズ To reduce output noise even further, position C2 near the Load with the shortest input-output wiring while paying attention to creepage and spatial distances . ■ To reduce output noise further Point! (i) Add a capacitor of a good high frequency characteristic to the input side. Design a pattern for the ground (common) line to be thick and short so as to reduce common impedance. (ii) Ensure that a capacitor to add to the output side shall have a sufficient withstand voltage and shall be attached to the terminal end. Try to make the lead wires of the capacitor the shortest possible in this case as well. In addition, with a load requiring a certain response speed, pay attention to the time (iii) 12V Fuse +Vin -Vin 100 -20 -10 0 +10 +20 +30 +40 +50 Ambient temperature (°C) Can be activated in this area but without performance warranty. Output derating rate (%) 12V SW1 Load SW1 Open=OFF Short=ON Output voltage control (0V to 6V applied) C1=47μF (OPEN) +Vin -Vin Vout (+ or -) Com (Vout) Vref VcontON/OFF CASE C2=0.047 to 0.1μF Vout (com) VcontVref 34 External variable resistor (5.0KΩ) Reference voltage generating circuit Vref voltage: 6±0.3V VHV VHV The VHV series basically does not require any additional parts, but to reduce output noise further, add Capacitor C2 as shown below. VHV series

How to use for a 24V input voltage Warranty Contact The warranty term of the product is one year after shipment. Should the product become defective within the warranty period due to our design or workmanship, the product will be repaired free of charge or replaced. However, this warranty does not cover products which have been subjected to unauthorized inner modifications, etc. The scope of our warranty is limited to that of the said product. If you have any further technical questions for this product, please contact us. 24V SW1 Output voltage control (OPEN) +Vin -Vin Vout (+ or -） Com (Vout) Vref VcontON/OFF DC/DC Vin Vout GND 12V C1 C2 Circuit diagram of 12V inputExternal DC-DC converter CASE VHV By connecting a 24V-input 12V-output DC-DC converter to the front of the VHV series, the VHV series can be used for a 24V input voltage. E-mail: info@volgen.com URL: www.volgen.com