Ultra small size Adjustable output high voltage power supply 2.5W to 3W Mid-high voltage DC-DC converter 0V to 180V300V350V MHV Series The MHV series is the first high voltage power supply in the industry to use the latest SMT (surface mount technology) making the size 1/5 to 1/6 of the normal product, with an adjustable output voltage type mid-high voltage DC-DC converter. Output voltage can be controlled using an external voltage or external resistor. The MHV series has adopted a 5 sided metallic shield, with lower ripple and lower noise. Features PCB mounting type Adopted a 5 sided metallic shield case Output capacity 2.5W to 3W 100% Burn in test Over current protection Adjustable voltage using an external voltage Worlds smallest size Low ripple noise of 30mVp-p Low price High reliability, long life UL certified product (UL File No. E305960) Model/Rating Model name MHV Series MHV12-180S15P MHV12-180S15N Input voltage (Vdc) Output voltage (Vdc) Note1 10.8 to 13.2 10.8 to 13.2 0 to +180 0 to -180 MHV12-300S10P MHV12-300S10N 10.8 to 13.2 10.8 to 13.2 0 to +300 0 to -300 MHV12-350S07P 10.8 to 13.2 0 to +350 MHV12-350S07N 10.8 to 13.2 0 to -350 Output current (mA) Load resistor (k) min Output capacity (W) 2.7 2.7 Input current (mA) typ Ripple noise (mVp-p) typ Case 30 30 30 M-8 M-8 0 to 15 0 to 15 0 to 10 12 12 30 3.0 350 350 395 0 to 10 30 3.0 395 30 M-8 0 to 7 0 to 7 50 50 2.5 330 30 M-8 2.5 330 30 M-8 M-8 Specifications 0.02% typ.(Input current varying from +10.8V to +13.2V) Line regulation 180V type 0.5% typ. 300V, 350V type : 0.2% typ.(Load current varying from 0% to 100%) Load regulation Temp regulation Over current protection 0.01%/ typ.(Temp varying from -10 to +50) Letter characteristic, auto restart circuit at 105% or more Output voltage accuracy Below 5% (Rated output, rated load, and Vcont=4.0V) Output voltage control External voltage 0V to +4V or an external resistor 5K to adjust -10 to+60(Derating required for temp higher than +50) -25 to+85 Usage temp range Storage temp range 20% to 95%RH(no dewing) Non isolated type (2pin-5pin and the case are connected internally) Usage humidity range Isolation between input/output MTBF expected value 480,000H min. (Bellnix MTBF formula diagram) Note1: The output voltage will be controlled by applying the Vcont voltage. Using an adjustable resistor or an external voltage, voltage should be applied on the Vcont pin in order to control the output voltage. When Vcont voltage=0V the output voltage (output residual voltage) should be less than 0.5% of the max output voltage(I/O rated). Test circuit Block diagram 1 +Vin Vout (+ or - 6 +Vin 1 + 12V MHV C1 C2 Load + -Vin Vref 4 OPEN Vout (Com) Vcont 3 5 -Vin C1=47F C2=4700pF High voltage oscillating trance are internally connected. Warning2: Vref is 4V 0.3V (When external VR=5K) Vout (+ or -) 6 Load output voltage control over current protection standard voltage generating part 5 2 Vout(com) Voltage detection + Output voltage control (Apply 0V to 4V) Warning1: The ground line (2pin, 5pin) between the input/output, and the case High voltage rectification Control IC 12V 2 DC-AC switching circuit Vref 4 Vcont External volt. (04V) or VR (5K) Case 3 + 1 BHV20081113 UL Certified product(UL File No. E305960) Model/Dimensions/Pin configuration (M-8 case) (4.44) 2.54x3=7.62 pin-NO. pin name +Vin -Vin Vcont Vref Vout (com) Vout (+ or -) 1)Pin Weight : 46g typ. Material : Phosphorous bronze Unit : mm TreatmentNi base Au coating Tolerances unless 2)Case otherwise specified:0.5 Material : Brass Treatment : Nickel coating Standard usage instructions Over current protection MHV Series (180V, 300V, 350V) The MHV series has a over load and load short protection 1 Vout (+ or -) +Vin 6 installed, which is the over current protection. When the product status is in over load or load short mode, the + C1 C2 MHV 2 -Vin Vref 4 (OPEN) Vout (Com) Load output voltage will decrease, and once the problem has been removed, the voltage will increase again. 5 Vcont 3 C1=47F C2=4700pF + Output voltage control (apply 0V to 4V) The MHV series does not require any external parts, however when the impedance is high, for example: the distance between the power supply and converter is long, the input line is thin, or the input side has a filter then connecting a capacitor C1 to the input side is recommended. Output voltage set value 12V 100 80 100% output 60 40 50% output 20 (%) 0 0 Output current (lo) 100% MHV series Over current protection characteristic Place the capacitor as close as possible to the converter pin side, to lower the lead inductance. 2 BHV20081113 Recommended pin pattern Setting output voltage and adjusting feature The MHV series output voltage can be adjusted by using an external voltage or external adjustable resistor. 1 2.54x3=7.62 27.94 15.24 17.78 +Vin C1 Hold 2- diameter : 2.5 2 C1=47F C2=4700pF Output voltage control Apply 0v to 4V or The MHV series uses a metallic case. When soldering to a double-sided PCB, the wiring for the converter should be on the soldering side. VR (5K) Also, this converter will generate high voltages so the C2 MHV 79.6 Hold 6 + 12V 6- diameter : 1.2 Vout (+ or -) -Vin Vref 4 Vout (Com) Load 5 Vcont 3 + R1 R2 creepage distance should also be taken into account Output voltage-VR resistance value characteristic when designing. 100% When mounting to a double-sided PCB, the high voltage 80% Output voltage output pin and land should be as small as possible. The MHV series case should be connected to the -Vin and Vout (Com). The metallic case does not need to be touching anything. 60% 40% 20% However, when using and making contact with the metallic 0% case, the anti land impedance should be lowered. R15K R20K When controlling the output voltage with an adjustable resistor, this pin is used. Vref has a standard output voltage of 4V. In this case, the external adjustable resistor is 5K. Since the resistance value from the external adjustable resistor will decide the output voltage with the effect of the specified value, use a resistance value with an accuracy of 5K5%. The type of resistor does not matter, as long as it is 5K, 0K 5K Output voltage-Output control voltage characteristic 100% Output voltage Vref pin (standard voltage output) VR resistance value 80% 60% 40% 20% however one with a good temp coefficient is recommended. 0% 1V 2V 4V 3V Output control voltage The above characteristics (Output voltage -VR resistance value characteristic) graph is an indication of the resistance value R1 Standard voltage generation circuit 0V and R2.When setting the voltage to a set rate using a stable MHV series Vref 4 Vcont 3 External adjustable resistor (5.0K) resistor, first decide the adjustable resistor R1 and R2. Vout (Com) 5 Do not apply voltage higher than 4V+5% on the Vcont. Choose an adjustable resistor appliance with good temp characteristics. When the resistance value for the adjustable resistor is 5.0K, the max output voltage of 6.0V which is 100%, should be applied to Vcont pin. Since the max output voltage largely affects the margin of error for the resistance value, set the resistance value at 5.0K5%. 3 BHV20081113 MHV Series Temp derating Decreasing the output noise further When using the product where the ambient temp is The MHV series does need any external parts, however higher than 50C, follow the derating graph below, to lower the output noise farther, connect a increasing the load resistance as the temp increases. capacitor C2 like the figure below. The minimum load resistance value is specified for each series. 1 12V Output derating MHV C1 80 (%) 2 -Vin Load 5 Vcont 3 4 (OPEN) 60 C2 Vout (Com) Vref C1=2247F C2=0.0470.1F + Output voltage control (Apply 0V to 4V) When lowering the output noise, the wiring of the input and output should be as short as possible. Place C2 40 closest to the load, paying attention to creepage and 20 0 -20 6 Vout (+ or -) + Though the system may start, reliability is not guranteed. 100 +Vin clearance distances. -10 0 +10 +20 +30 +40 +50 +60 Ambient temp () Point! Choose a capacitor with a high-frequency when adding to the input. Earth (COMMON) line should be thick and short in the Preventing reverse connections pattern design to lower the common impedance. The converter may break if the polarities are reversed. The capacitor which is connected to the output side If there is a possibility in which the connections maybe should be able to withstand the pressure, when reversed, connect a diode and fuse like below. connected to the loadside. At this time, the capacitor lead should be shortened. Also when the load response time is a problem, please be aware of the time constant. Fuse + +Vin Safety standards MHV 12V -Vin The MHV series has been certified with the ULc-UL. UL60950-11stEd. c-UL(CSA22.2No.60950-1-031stEd.) When using this product as a recognized (certified) product, an input fuse should be mounted like below. Recommended solder conditions 1 Soldering conditions for each part are as follows: Using a soldering iron 340 to 360C 5 sec. Using a soldering tub 230 to 260C 10 sec. +Vin Vout (+ or -) 6 + 12V MHV C1 2 -Vin Vref 4 (OPEN) C2 Vout (Com) Vcont 3 Choose a fuse from below: UL Listed products DC250VRated current 2A type Load 5 C1=47F C2=4700pF + Output voltage control (Apply 0V4V) 4 BHV20081113