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Basic Characteristics Data Basic Characteristics Data Model Circuit method Switching frequency [kHz] Input current [A] Rated input fuse Inrush current protection DBS100A Forward converter 370 1.10 *1 - - Material Single sided Series/Parallel operation availability Double Series Parallel sided operation operation Aluminum Yes Yes PCB/Pattern Yes DBS150A Forward converter 370 1.59 *1 - - Aluminum Yes Yes Yes DBS200B Forward converter 370 0.99 *1 - - Aluminum Yes Yes Yes DBS400B Forward converter 370 1.72 *1 - - Aluminum Yes Yes Yes DBS700B Forward converter 381 2.76 *1 - - Aluminum Yes Yes Yes *1 The value of input current is at rated input and rated load. DBS DBS DBS-10 DBS_E.indd 10 15.6.19 11:42:18 AM .Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type Instruction Manual 1 Pin Connection DBS-12 2 Connection for Standard Use DBS-12 3 Wiring Input/Output Pin DBS-12 4 5 6 3.1 Wiring input pin DBS-12 3.2 Wiring output pin DBS-13 Function DBS-14 4.1 Overcurrent protection DBS-14 4.2 Overvoltage protection DBS-14 4.3 Thermal detection/Thermal protection DBS-14 4.4 Inverter operation monitor DBS-14 4.5 Remote ON/OFF DBS-15 4.6 Remote sensing DBS-15 4.7 Adjustable voltage range DBS-16 4.8 Isolation DBS-16 Series and Parallel Operation DBS-17 5.1 Series operation DBS-17 5.2 Parallel operation/Master-slave operation DBS-17 5.3 N+1 redundant operation DBS-17 Implementation Mounting Method DBS DBS-18 6.1 Mounting method DBS-18 6.2 Stress onto the pins DBS-18 6.3 Cleaning DBS-18 6.4 Soldering DBS-18 6.5 Derating DBS-18 DBS-11 DBS . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type 2 Connection for Standard Use 1 Pin Connection Table 1.1 Pin connection and function NO. Pin Connection -VIN -DC input RC1 Remote ON/OFF(Input side) +VOUT +DC output -VOUT -DC output CB Current balance Reference: 4.5 VB Voltage balance 4.6 TMP Thermal detection signal Fig.2.1 and external components in table2.1. Adjustment of output voltage +S +Remote sensing -S -Remote sensing IOG Inverter operation monitor AUX Auxiliary power supply FG Mounting hole(FG) -VIN RC1 +VOUT -VOUT CB VB TMP RC3 RC2 TRM +S -S IOG DBS Avoid applying AC input directly. It will damage the power supply. nOperate with the conduction cooling(e.g. heat radiation from the aluminum base plate to the attached heat sink). Reference: 6.5 ”Derating” Heatsink Reference +S F1 3.1 ”Wiring input pin” 4.5 ”Remote ON/OFF” Cin DC Noise input filter +VIN +VOUT -VIN -VOUT RC1 FG 3.2 ”Wiring output pin” 4.3 ”Thermal detection/Thermal protection” 4.5 ”Remote ON/OFF” 4.7 ”Adjustable voltage range” 4.6 ”Remote sensing” 4.4 ”Inverter operation monitor” 4.5 ”Remote ON/OFF” FG 3.1 ”Wiring input pin” TRM +S -S IOG AUX Load -S Fig.2.1 Connection for standard use 5.2 ”Parallel operation/Master-slave operation” AUX + Co CY CB VB TMP RC3 RC2 RC1 -VIN ”Remote ON/OFF” ”Remote sensing” nThe DBS Series handles only the DC input. Remote ON/OFF(output side) Pin Connection nShort the following pins to turn on the power supply. -VIN RC1, +VOUT +S, -VOUT -S TRM +VIN DBS nIn order to use the power supply, it is necessary to wire as shown in +DC input RC2 NO. Function +VIN RC3 Instruction Manual No. 1 2 3 4 5 6 Table 2.1 External components Symbol component Reference F1 Input fuse 3.1 (1) ”External fuse” CY Primary decoupling capacitor 3.1 (2) ”Noise filter/ Decoupling capacitor” Noise filter Cin External capacitor on the input side 3.1 (3) ”External capacitor on the input side” Co External capacitor on the output side 3.2 ”Wiring output pin” Heatsink 6.5 ”Derating” 3 Wiring Input/Output Pin -VOUT 3.1 Wiring input pin +VIN +VOUT 4-FG Fig.1.1 Pin connection(bottom view) (1) External fuse nFuse is not built-in on input side. In order to protect the unit, install the normal blow type fuse on input side. nWhen the input voltage from a front end unit is supplied to multiple units, install the normal blow type fuse in each unit. Table 3.1 Recommended fuse(Normal-blow type) Model Rated current DBS-12 DBS100A / 150A DBS200B DBS400B DBS700B 5A 3A 5A 10A . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type Instruction Manual Range of input voltage (2) Noise filter/Decoupling capacitor nInstall an external noise filter and a decoupling capacitor CY for Input current [A] low line-noise and for stable operation of the power supply. nInstall a correspondence filter, if a noise standard meeting is required or if the surge voltage may be applied to the unit. nInstall a primary decoupling capacitor CY, with more than 470pF, Ip near the input pins(within 50mm from the pins). nWhen the total capacitance of the primary decoupling capacitor is more than 8800pF, the nominal value in the specification may not Input voltage [V] be met by the Hi-Pot test between input and output. Fig.3.2 Input current characteristics In this case, it is that a capacitor should be installed between output and FG. (5) Operation with AC input nThe DBS series handles only for the DC input. (3) External capacitor on the input side nInstall an external capacitor Cin between +VIN and -VIN input pins for low line-noise and for stable operation of the power supply. A front end unit(AC/DC unit) is required when the DBS series is operated with AC input. DBS100A / 150A:more than 47 F (6) Reverse input voltage protection DBS200B:more than 0.1 F nAvoid the reverse polarity input voltage. It will break the power DBS400B / 700B:more than 0.33 F supply. nWhen the line impedance is high or the input voltage rise quickly at start-up(less than 10 s), install a capacitor Cin between +VIN It is possible to protect the unit from the reverse input voltage by installing an external diode. DC and -VIN input pins(within 50mm from pins). YES DBS200B:more than 22 F DBS Load DBS Load DBS Load DBS400B / 700B:more than 47 F AC NO (4) Input voltage rang/Input current range nThe specification of input ripple voltage is shown as below. AC Ripple voltage DBS100A / 150A:less than 10Vp-p AC /DC YES DBS200B / 400B / 700B:less than 20Vp-p DBS nMake sure that the voltage fluctuation, including the ripple voltFig.3.3 Use with AC input age, will not exceed the input voltage range. nUse a front end unit with enough power, considering the start-up (a) current Ip of this unit. (b) Ripple voltage DC IN Input voltage range Input voltage [V] +VIN -VIN +VIN DC IN -VIN Fig.3.4 Reverse input voltage protection DBS 3.2 Wiring output pin time Fig.3.1 Input voltage ripple t nInstall an external capacitor Co between +VOUT and -VOUT pins for stable operation of the power supply. Recommended capacitance of Co is shown in Table 3.2. nSelect the high frequency type capacitor. Output ripple and startup waveform may be influenced by ESR ESL of the capacitor and the wiring impedance. nInstall a capacitor Co near the output pins(within 100mm from the pins). DBS-13 . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type nWhen the output voltage drops at overcurrent, the average output Table 3.2 Recommended capacitance Co [ F] Model Output voltage (V) DBS100A DBS150A DBS200B DBS400B 2200 6800 2200 4700 2200 4700 1000 2200 3.3 5 2200 7.5 12 1000 13.8 1000 15 1000 DBS700B nThe overvoltage protection circuit is built-in. The DC input should 2200 470 28 The recovery time varies depending on input voltage and input 820 2200 820 2200 36 2200 48 1000 When using power supply at -20 tance becomes 3 times. or less, the recommended capaci- nThe specified ripple and ripple noise are measured by the method introduced in Fig.3.5. Measuring board S 2200pF VIN DC input capacity. Remarks: Please note that devices inside the power supply might fail when voltage more than rated output voltage is applied to output terminal of the power supply. This could happen when the customer tests the overvoltage performance of the unit. 100mm DBS100A/150A/200B/400B FG be shut down if overvoltage protection is in operation. The minimum interval of DC recycling for recovery is for 2 to 3 minutes( ). 2200 24 current is reduced by intermittent operation of power supply. 4.2 Overvoltage protection 2200 18 Instruction Manual nThermal detection(TMP) and protection circuit are built-in. VOUT Cin nWhen overheat is detected, thermal detection signal(TMP) turns Co RC1 4.3 Thermal detection/Thermal protection 0. F Load ”L” from ”H”. TMP circuit is designed as shown in Fig.4.1, and specification is VIN VOUT shown as in Table 4.1. 2200pF nWhen overheating continues after detecting the TMP signal, the S FG output will be shut down by the thermal protection circuit. Oscilloscope BW:20MHz When this function comes into effect, input voltage should be shut off, and eliminate all possible causes of overheat condition and DBS700B DBS FG lower the temperature of the unit to the normal level. 100mm Measuring board S 4.4 Inverter operation monitor 2200pF VIN DC input VOUT Cin nBy using the inverter operation monitor(IOG), malfunction of the Co RC1 0. F Load inverter can be monitored. When inverter operation is in following mode VIN VOUT 2200pF FG Oscilloscope BW:100MHz DBS , IOG signal IOG circuit is designed as shown in Fig.4.1 and specification is S R or turns ”H” from ”L” within 1 second. 1.5m 50 Coaxial Cable C R=50 C=0.01 F Fig.3.5 Method of Measuring Output Ripple and Ripple Noise shown in Table 4.1. Malfunction of inverter. The output voltage drops by 60% or less of the rated voltage. When output wattage is decreased radically to less than 10% of rated wattage. 4 Function 4.1 Overcurrent protection 22k 6V typ TMP or IOG nOvercurrent protection is built-in and comes into effect at over -S 105% of the rated current. Overcurrent protection prevents the unit from short circuit and overcurrent condition. The unit automatically recovers when the fault condition is cleared. DBS-14 Fig.4.1 TMP, IOG circuit . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type Table 4.1 Specification of TMP, IOG No. Item (a) TMP IOG Normal operation ”H” Normal operation ”L” Overheat detection ”L” Malfunction of inverter ”H” (b) 2.2k AUX 150 RC3 1 Function 2 Base pin -S RC2 3 Level voltage ”L” 0.5Vmax at 5mA OFF 4 Level voltage ”H” 5V typ 5 Maximum sink current 10mA max 6 Maximum applicable voltage 35V max 12V typ Instruction Manual 12V typ (c) 2.2k AUX 150 RC3 POWER ON -S 12V typ 2.2k AUX 150 RC3 POWER ON OFF RC2 POWER OFF ON RC2 -S -S Fig.4.3 RC2 RC3 connection example 4.5 Remote ON/OFF nMake sure that sink current of output side remote ON/OFF circuit nRemote ON/OFF circuit is built-in on both side of input(RC1) and should be less than 12mA. output(RC2 RC3). Output can be controlled by either circuit. (3) Auxiliary power supply for remote ON/OFF(AUX) nAUX is built in for operating the output side remote ON/OFF (1) Input side remote ON/OFF(RC1) (RC2 RC3). nThe ground pin of input side remote ON/OFF circuit is ”-VIN” pin. If AUX is not used for RC2 RC3, AUX can be used for IOG or Between RC1 and -VIN: Output voltage is ON at ”Low” level or TMP signal output by opto coupler. nShort protection resistance(2.2k ) is built in. short circuit(0 - 1.0V). Between RC1 and -VIN: Output voltage is OFF at ”High” level or Output voltage decreases as the output current increases. open circuit(3.5 - 7.0V). (AUX voltage at open circuit: 15V max) When RC1 is ”Low” level, fan out current is 0.3mA typ. When Vcc is applied, use 3.5 Vcc 4.6 Remote sensing 7V. When remote ON/OFF function is not used, please short between (1) When the remote sensing function is not in use RC1 and -VIN. nWhen the remote sensing function is not in use, it is necessary to nWhen the DPA DPF series(Power factor & harmonic corrector module) is used as a front end unit, connect between RC1 pin and PR pin on DPA(between RC1 pin and ENA pin on DPF) for confirm that pins are shorted between +S & +VOUT and between -S & -VOUT. nWire between +S & +VOUT and between -S & -VOUT as short as possible. the start-up timing of the DBS200B/400B/700B control. Loop wiring should be avoided. This power supply might become unstable by the noise coming Vcc DBS from poor wiring. Rc RC1 (2) When the remote sensing function is in use or -VIN Transistor nTwisted-pair wire or shield wire should be used for sensing wire. or IC Relay nThick wire should be used for wiring between the power supply and a load. Fig.4.2 RC1 connection example Line drop should be less than 0.5V. Voltage between +VOUT and -VOUT should remain within the out- (2) Output side remote ON/OFF(RC2 RC3) put voltage adjustment range. nIf the sensing patterns are short, heavy-current is drawn and the Table 4.2 Specification of output side remote ON/OFF(RC2 RC3) No. RC2 RC3 Item 1 Wiring method Fig.4.3 (a) Fig.4.3 (b) Fig.4.3 (c) 2 Function 3 Base pin 4 Power ON Open (0.1mA max) Short (0.5V max) 5 Power OFF Short (3mA min) Open (0.1mA max) Power ON ”H” Power ON ”H” Power ON ”L” RC2 -S pattern may be damaged. The pattern disconnection can be prevented by installing the protection parts as close as a load. -S and RC2 DBS-15 DBS . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type Instruction Manual Table 4.3 Recommended value of external potentiometer & resistor No. Adjustable range [%] Number of unit +S +VOUT OUT Single 1 + Co 5 2 Load -VOUT Fig.4.4 Connection when the remote sensing is not in use 36k 1k 36k 2 sets 5k 3 sets 6 R2 24k Single 10 5 Short at pin root 5k 3 sets 4 R1 75k 2 sets 3 -S External parts value [ ] VR1 18k 910 12k (2) Adjusting method by applying external voltage Wire as close as possible nBy applying the voltage externally at TRM, output voltage become adjustable. +S nOutput voltage is calculated by the following equation. +VOUT + Co OUT (Output voltage) Load -VOUT = (Applied voltage externally) (Rated output voltage) -S nThe output adjustment range for DBS700B is shown in Fig.4.7. 4.7 Adjustable voltage range nOutput voltage is adjustable by the external potentiometer or by applied voltage externally. Output Voltage [%] Fig.4.5 Connection when the remote sensing is in use The adjustable range is 60 - 110% of the rated output voltage. nWhen the output voltage adjustment is used, note that the DBS 105 100 60 0 0 250 200V Input Voltage [V] Fig.4.7 DBS700B Output Voltage Adjustment Range overvoltage protection circuit operates when the output voltage 4.8 Isolation sets too high. nFor a receiving inspection, such as Hi-Pot test, gradually in- (1) Adjusting method by external resistor crease(decrease) the voltage for a start(shut down). Avoid using nBy connecting the external potentiometer(VR1) and resistors(R1, Hi-Pot tester with the timer because it may generate voltage a R2), output voltage becomes adjustable, as shown in Fig.4.6, recommended external parts are shown in Table 4.3. nThe wiring to the potentiometer should be as short as possible. The temperature coefficient becomes worse, depending on the type of a resistor and potentiometer. Following parts are recommended for the power supply. Resistor Metal film type, coefficient of less than 100ppm/ Potentiometer Cermet type, coefficient of less than 300ppm/ nWhen the output voltage adjustment is not used, open the TRM DBS 110 pin and VB pin respectively. +VOUT +S VB Control Amp. of rated voltage - RA 15k + RB 10k Reference voltage 2.5V TRM R1 -S -VOUT Fig.4.6 Output voltage control circuit DBS-16 R2 VR1 few times higher than the applied voltage, at ON/OFF of a timer. . Power DC-DC Converters Power Module DC-DC Converters Bus Converter Moduletype Type 5 Series and Parallel Operation Instruction Manual +VOUT +S VB TRM CB -S R2 R1 VR1 + Load Co -VOUT 5.1 Series operation The output voltage rises nSeries operation is available by connecting the outputs of two or more power supplies, as shown below. Output current in series connection should be lower than the lowest rated current in each unit. +VOUT +S VB TRM CB -S when VR1 is adjusted for the resistance + Co between and to lower. -VOUT (a) Power supply Load +VOUT +S VB TRM CB -S Power supply + Co -VOUT (b) Fig.5.2 Examples of parallel operation Load Power supply nWhen output voltage adjustment is not in use. TRM wiring, R1, R2 and VR are not necessary. Load nThick wire should be used for wiring between the power supply Power supply and load, and line drop should be less than 0.3V. nWhen the output-line impedance is high, the power supply is become unstable. Fig.5.1 Examples of series operation Use same length and thickness(width) wire(pattern) for the current balance improvement. 5.2 Parallel operation/Master-slave operation nParallel operation is available by connecting the units as shown in Fig.5.2. nAs variance of output current drew from each power supply is maximum 10%, the total output current must not exceed the value determined by the following equation. (number of unit) nWhen the number of the units in parallel operation increases, input DBS current increases. Adequate wiring design for input circuitry such as circuit pattern, wiring and current for equipment is required. nConnect the sensing line and the power line by one point after connecting each power supply’s sensing pins(+S, -S). In multiple operation, sensing wires should be connected between each units for the muster connection to a load. (Output current in parallel operation) =(the rated current per unit) nConnect each input pin for the lowest possible impedance. 0.9 When the number of units in parallel operation increases, input current increase at the same time. Adequate wiring design for input circuitry is required, such as circuit pattern, wiring and current capacity for equipment. In parallel operation, the maximum operative number of units is 11. nOutput current should be 10% or more of the total of the rated output current in parallel operation. If less than 10%, the IOG signal might become unstable, and output voltage slightly increasing (max5%). nIOG signal might be unstable for one second when the units are turned on in parallel operation. 5.3 N+1 redundant operation nIt is possible to set N+1 redundant operation for improving reliability of power supply system. nPurpose of redundant operation is to ensure stable operation in the event of single power supply failure. Since extra power supply is reserved for the failure condition, so total power of redundant operation is equal to N-1. DBS-17 DBS . Power DC-DC Power Converters module Power Module DC-DC Converters Bus type Converter Moduletype Type 6 Implementation Mounting Method A nThe unit can be mounted in any direction. When two or more A B part Less than 9.8N(1kgf) Less than 29.4N(3kgf) Less than 9.8N(1kgf) Less than 9.8N(1kgf) Less than 29.4N(3kgf) power supplies are used side by side, position them with proper intervals to allow enough air ventilation. Aluminum base plate tem- B A part Less than 29.4N(3kgf) 6.1 Mounting method Instruction Manual Fig.6.2 Stress onto the pins perature around each power supply should not exceed the tem- 6.3 Cleaning perature range shown in derating curve. nClean the product with a brush. Prevent liquid from getting into nAvoid placing the DC input line pattern lay out underneath the unit, it will increase the line conducted noise. Make sure to leave an ample distance between the line pattern lay out and the unit. the product. Do not soak the product into liquid. nDo not stick solvent to a name plate or a resin case. Also avoid placing the DC output line pattern underneath the unit (If solvent sticks to a name plate or a resin case, it will cause to because it may increase the output noise. Lay out the pattern change the color of the case or to fade letters on name plate away from the unit. away.) nHigh-frequency noise radiates directly from the unit to the atmo- nAfter cleaning, dry them enough. sphere. Therefore, design the shield pattern on the printed circuit 6.4 Soldering board and connect its one to FG. nFlow soldering The shield pattern prevents noise radiation. nSoldering iron Shield pattern RC1 -VIN +VIN -VOUT Shield pattern +VOUT : 260 less than 15 seconds. DC IN/DC OUT/RC1 : 450 less than 5 seconds. Signal pins less than 3 seconds(less than 20w). : 350 6.5 Derating nUse with the conduction cooling(e.g. heat radiation by conduction from the aluminum base plate to the attached heat sink). Fig.6.3 shows the derating curve based on the aluminum base DBS plate temperature. In the hatched area, the specification of ripple Fig.6.1 Shield pattern lay out(bottom view) 6.2 Stress onto the pins nWhen too much stress is applied to the pins of the power supply, the internal connection may be weakened. and ripple noise is different from other areas. nIt is necessary to note thermal fatigue life by power cycle. Please reduce the temperature fluctuation range as much as possible when the up and down of temperature are frequently generated. Contact for more information on cooling methods. As shown in Fig.6.2 avoid applying stress of more than 29.4N(3kgf) 100 the signal pins(B part). DBS nThe pins are soldered on PCB internally, therefore, do not pull or bend them with abnormal forces. nMounting hole diameter of PCB should be 3.5mm to reduce the stress onto the pins. nFix the unit on PCB(fixing fittings) by screws to reduce the stress onto the pins. Be sure to mount the unit first, then solder the unit. Load factor [%] on the input pins/output pins(A part) and more than 9.8N(1kgf) to DBS100,150,200,400 50 DBS700B12,24,28 DBS700B36,48 0 -20 -10 0 10 20 30 40 50 60 Fig.6.3 Derating curve DBS-18 70 80 85 90 Aluminum base plate temperature Tc [ ] Tc Measuring point 100
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