OHV12-1.0K1500N

Ultracompact, Adjustable Output High-Voltage Power Supply 1.5Watt Medium-High Voltage DC-DC Converter 1000V, 1500V, 2000V OHV Series The OHV series is our new line of medium-high voltage DC-DC converters featuring an ultracompact size with the footprint reduced by about 60% as compared to conventional models. 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. ■ Features ･Ultralow ripple noise 10mVp-p ･World's smallest size (about a 60% reduction from comparable conventional models) ･Adjustable output voltage from 0 to 100% ･Control voltage 0 to +6V ･Built-in over current protection circuit ･Output capacity 1.5W ･ON/OFF Control ･Adjustable voltage by variable resistor or external voltage ･Use of pentahedron metal shield case ･PCB mount type ･High reliability and long life ･Supports 24V input with an external DC-DC converter ■ Model/Standard Input V (Vdc) Output V (Vdc) *1 Output I (mA) Load Resistance (KΩ) min Input I (A) typ Ripple Noise (mVp-p) typ 11.0-13.0 11.0-13.0 11.0-13.0 11.0-13.0 11.0-13.0 11.0-13.0 0 to +1000 0 to -1000 0 to +1500 0 to -1500 0 to +2000 0 to -2000 0-1.5 0-1.5 0-1.0 0-1.0 0-0.7 0-0.7 666.7 666.7 1500 1500 2857 2857 0.28 0.28 0.28 0.28 0.28 0.28 5 5 7 7 10 10 Models OHV Series OHV12-1.0K1500P OHV12-1.0K1500N OHV12-1.5K1000P OHV12-1.5K1000N OHV12-2.0K700P OHV12-2.0K700N Note 1: See P5 on how to use with a 24V input voltage. ■ Specifications Line regulation 0.01% typ. (for a line regulation of 11.0 to 13.0V) Load regulation 0.02% typ. (for a load current regulation of 0 to 100%) Temperature regulation 70ppm/°C typ. (for temperature regulation of -10°C to +50°C) Over current protection Drooping characteristic, built-in automatic return circuit, activated at 105% or more Output voltage setting accuracy ±2% or less (when controlling a 6.0V external voltage) Output voltage control Either with 0V to +6V external voltage or a 5KΩ external variable resistor ON/OFF control Between 2pin and 5pin, OFF when opened and ON when short-circuited Operating temp range -10°C to +50°C (no temperature derating needed Storage temp range -25°C to +85°C Operating humidity range 20% to 95% RH (no condensation) Isolation between input and output Non-isolated type (2pin through 6pin are connected inside) MTBF expectation Min. 390,000 to 400,000H (calculated from Bellnix MTBF calculation table) 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 OHV 1 +Vin 7 Vout (+ or -） +Vin 12V 2 5 Output voltage control circuit Over current protection circuit Reference voltage generator 6 Vref ON/OFF SW1 Load 12V Com (Vout) -Vin Short=ON 7 Control IC + CASE Open=OFF Vout (+ or -） High-voltage rectifier Load C1 SW1 High-voltage oscillation transformer DC-AC converter 1 + Vcont 4 -Vin C1=47μF 6 3 2 (OPEN) + case Output voltage control (0V to 6V applied) (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. SW1 Open=OFF Short=ON Com(Vout) Voltage detection circuit ON/OFF Control ON/OFF 5 Vref 4 Vcont 3 External voltage (0 to 6V) or VR （5kΩ） + 1 BHV20120208 ■ Shape, dimensions and terminal composition 16.0 Pin-NO. 1 2 3 4 5 6 7 0.5 30.0 44.0±0.5 Pin name +Vin -Vin Vcont Vref ON/OFF Com (Vout) Vout (+ or -) Weight: TBD Unit: mm 4.0 2.0 Unspecified dimensional tolerance ±0.5 0.5 Lot indication 1) Terminal Material: Phosphor bronze 7-0.64□L=4.2 min Treatment: Ni base Au plating 35.5 2) Case 　Material: Brass 7.0 　Treatment: Nickel plating 5.08 ±0.3 7.62 ±0.3 7.62 ±0.3 2×CASE PIN 2.54±0.1 2.54×4=10.16 ■ 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. OHV 1 Vout (+ or -） +Vin 7 　　　　Between ON/OFF terminal (5) and -Vin terminal (2) 　　　　(1) Output OFF when opened + 12V C1 Load CASE 2 SW1 Open=OFF Short=ON Com (Vout) -Vin SW1 6 Vref ON/OFF 5 4 (OPEN) Vcont 3 C1=47μF 　　　　(2) Output ON when short-circuited (0 - 0.4V, 1mA max.) 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. + Output voltage control (0V to 6V applied) The OHV 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 input side, etc. When fitting a capacitor, try to add on the converter terminal side so as to reduce lead inductance. ON/OFF (5) ON/OFF (5) (2) (2) -Vin -Vin Non-isolated type Isolated type 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). 2 Bellnix High Voltage DC-DC Converters BHV20120208 ■ Overcurrent protection circuit ■ Setting and adjustment of output voltage The OHV series has a built-in over current protection circuit against overload and load shortcircuit. The circuit reduces output voltage in case of overload or load short-circuit and automatically returns the output to normal when the cause is eliminated. The output voltage of the OHV series can be set and adjusted by external voltage and external variable resistor. OHV 1 7 Vout (+ or -) +Vin + Output voltage setting value (%) 12V 10 0 Load C1 CASE 100% output 80 2 SW1 60 6 Vref ON/OFF Open=OFF SW1 Short=ON 40 Com (Vout) -Vin 4 (OPEN) 5 50% output C1=47μF + Output voltage control (0V to 6V applied) 20 0 Vcont 3 0 Output current (lo) 100% Output voltage – VR resistance characteristic OHV series over current protection circuit characteristic Output voltage (%) 100% 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. 80% 60% 40% 20% 0% R1　5kΩ ■ Recommended pattern 0kΩ VR resistance R2　0kΩ 5kΩ [Top View] 17.75 17.75 Output voltage – output control voltage characteristic 80% Output voltage (%) 8.75 6.75 100% 60% 40% 20% 0% 0V 2.54±0.1 2.54×4=10.16 5.08 ±0.3 7-　　 Hole dia. : φ1.2 7.62 ±0.3 7.62 ±0.3 1.5V 3V 4.5V 6V Output control voltage 2-　　 Hole dia. : φ2.5 [mm] (i) The OHV 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. (ii) When mounting onto a double-sided board, make the land on the parts surface of the high voltage output terminal as small as possible. (iii) Connect the case of the OHV series to -Vin or Com. Try to reduce impedance to the ground as much as possible. ● 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. ● Do not apply 6V+3% or more voltage to Vcont. ● Use a variable resistor with a good temperature coefficient. ● 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%. 3 BHV20120208 ■ Description of Vref terminal (reference voltage output) ■ Recommended soldering conditions 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. 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. 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 ■ To reduce output noise further The OHV series basically does not require any additional parts, but to reduce output noise further, add Capacitor C2 as shown below. OHV Vref voltage: 6±0.3V 1 Reference voltage generating circuit Vcont 4 7 + OHV series Vout (com) 6 Vref Vout (+ or -) +Vin 12V C1 C2 CASE 2 3 Load SW1 Open=OFF Short=ON Com (Vout) -Vin ON/OFF SW1 6 Vref 5 4 (OPEN) Vcont 3 C1=47μF C2=0.047 to 0.1μF + Output voltage control (0V to 6V applied) External variable resistor (5.0KΩ) ■ Temperature derating Can be activated in this area but without performance warranty. 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 . Output derating rate (%) 100 Point! (i) Add a capacitor of a good high frequency characteristic to the input side. (ii) Design a pattern for the ground (common) line to be thick and short so as to reduce common impedance. 80 60 (iii) 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 40 20 0 -20 -10 0 +10 +20 +30 +40 +50 Ambient temperature (°C) ■ Protection against reverse connection 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. Fuse + 12V +Vin OHV -Vin Bellnix High Voltage DC-DC Converters 4 BHV20120208 How to use for a 24V input voltage By connecting a 24V-input 12V-output DC-DC converter to the front of the OHV series, the OHV series can be used for a 24V input voltage. External DC-DC converter 24V Vin + Vout Circuit diagram of 12V input 12V Vout (+ or -） +Vin DC/DC C1 GND C2 C3 OHV CASE Com (Vout) -Vin Vref SW1 ON/OFF Vcont (OPEN) + Output voltage control 　　　 　　Examples of DC-DC converters Model Vin [V] Vout [V] 15 to 32 12 BSS-05S0R6A 7 to 36 BSS-12S2R5A 15 to 36 Iout [mA] Isolation 500 Non-isolated type 3.3 to 24 600 Non-isolated type 9.5 to 15 2500 Non-isolated type 18 to 36 9 to 12 1000 Non-isolated type REC6-2412SRW/R/A 18 to 36 12 500 Isolated type RPP20-2412S 18 to 36 12 1666 Isolated type BTC24-12S50 18 to 36 12 500 Isolated type BTD24-12S100 18 to 36 12 1000 Isolated type R-7812-0.5 　 BSA24-12S1R0 When selecting a front DC-DC converter, the following shall 　 be borne in mind. ● Select a DC-DC converter compatible to the OHV series in its input power. ● Pay attention to the temperature derating in selecting a DC-DC converter. ● For C1 and C2, use capacitors recommended in the data sheet of the DC-DC converter concerned. ● Always check the data sheet of a DC-DC converter before use. Warranty 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. Contact If you have any further technical questions for this product, please contact us. E-mail: info@bellnix.com URL: http://www.bellnix.com 5 BHV20120208