Basic characteristics data • Instruction manual
Contents
1. Fig 2 1 Connection for standard use Table 2 1 External parts No parts Reference 1 F1 Fuse 3 1 1 External fuse 2 Ci External output capacitor 3 1 2 External input capacitor 3 RrRM Resistance for adjustment 4 4 Adj I output voltage djustable voltage range 3 Wiring Input Output Pin 3 1 Wiring input pin 1 External fuse Fuse is not built in on input side in order to protect the unit install the normal blow type fuse on input side When the input voltage from a front end unit is supplied to multiple units install the normal blow type fuse in each unit mWhen the fuse is open power good signal is not outputed Table 3 1 Recommended fuse Model BRNS6 BRNS12 BRNS20 Rated current 15A 20A 40A CO EL 2 External capacitor on the input side Wilnstall an external capacitor Cin between VIN and GND input pins for low line noise and for stable operation of the power sup ply Table 3 2 Recommended external input capacitor Ceramic Model BRNS6 BRNS12 BRNS20 Cin 22uUF x2 22uUF x2 22UF x3 Cin is within 5mm for pins Make sure that ripple current of Cin is less than its rating MWhen an impedance and inductance level of the input line be come higher the input voltage may become unstable In that case the input voltage becomes stable by increasing Cin 3 Recommendation for noise filter M2. DC Cin Co1 Co2 input EE e 5 GND GND 34 25mm j Oscilloscope sm 1 5m 500 Bw 20MHz N Coaxial cable R 502 C 4700pF or 10000pF Fig 3 4 Measuring method of Ripple and Ripple Noise Table 3 4 Co1 and Co2 which is used in measuring No Model Vo Col Co2 1 0 6 3 3V 47yFx1 100pgFx1 BRNS6 2 3 3 5 5V 22yFx1 22yFx1 3 0 6 3 3V 47yFx1 100yFx1 BRNS12 4 3 3 5 5V 22yFx1 22yFx2 5 0 6 3 3V 100gFx1 100yFx1 BRNS20 6 3 3 5 5V 22yFx2 22yFx2 BRNS 7 BRNS cO EL 4 Function 4 1 Overcurrent protection WlOver Current Protection OCP is built in and works at 105 of the rated current or higher However use in an overcurrent situa tion must be avoided whenever possible The output voltage of the power module will recover automatically when the fault causing overcurrent is corrected When the output voltage drops after OCP works the power mod ule enters a hiccup mode where it repeatedly turns on and off at a certain frequency 4 2 Remote ON OFF The remote ON OFF function is incorporated in the circuit and op erated with RC and Vin If positive logic control is required order the power supply with R option Table 4 1 Specification of Remote ON OFF SORGE F Between RC and GND eae f L level 0 2 0 8V or short or open ON Standard Negative H level 3 0 VIN OFF L level 0 2 0 3V or short OFF O
3. 2 Parallel operation WiParallel operation is not possible Redundancy operation is available by wiring as shown below h la Power P Supply Load Power Supply Fig 5 1 Redundancy operation WiEven a slight difference in output voltage can affect the balance between the values of h and l2 Please make sure that the value of ls does not exceed the rated current of the power supply ls S the rated current value 6 Implementation Mounting Method 6 1 Mounting method The unit can be mounted in any direction When two or more pow er supplies are used side by side position them with proper inter vals to allow enough air ventilation The temperature around each power supply should not exceed the temperature range shown in derating curve 6 2 Automatic Mounting Wo mount BRNS series automatically use the coil area near the center of the PCB as an adsorption point Please see the External View for details of the adsorption point 6 3 Soldering WIFig6 1 shows condition for reflow of BRNS series Please make sure that the temperature of board s pattern near by VOUT and GND terminal MWhile soldering having vibration or impact on the unit should be avoided because of solder melting Instruction Manual Tp Tx Ty2 Ty1 A A B B C time s A 1 0 5 0C s A Ty1 160 10 C Ty2 180 10 C Ty1 Ty2 120
4. Considerations BRNS 12 Derating BRNS 12 SuEMMBNSISenesiiPeranck aaa BRNS 12 9 Package information BRNS 13 BRNS 5 JUAN cO EL 1 Pin Connection Table 1 1 Pin connection and function Pin No BRNS BRNS Pin Connection Function 6 12 20 RC Remote ON OFF e VIN DC input GND GND DC input DC output VOUT DC output 9 S Remote sensing TRM Adjustment of output voltage SGND Signal GND CLK NC Clock output 9 SEQ Control of Start up time and turn 9 PGOOD Power good d SYNC Input for frequency synchronization NC BRNS6 12 S Remote sensing BRNS20 NC NC NC NC NC NC NC NC NC NC MBRNS6 12 amp E BBRNS20 elam 5 Fig 1 1 Pin Connection Bottom View BRNS 6 Instruction Manual 2 Connection for Standard Use Win order to use power supply it is necessary to wire as shown in Fig 2 1 Reference 3 Wiring Input Output Pin 8 Derating WiShort the following pins to turn on the power supply Reference 4 3 Remote Sensing llConnect resistance to set the output voltage between TRM and GND Reference 4 4 Adjustment output voltage Between input and output is not isolated WTIhe BRNS series handle only the DC input Avoid applying AC input directly It will damaged the power supply FO N DC input Gi
5. 0 Instruction Manual 9 Q0 VIN VOUT SYNC _ iC Vevuc Load nput M e GND 4 Fig 4 10 Example of frequency synchronization Vsync Duty50 gt 0 t Fig 4 11 Recommended wave form of SYNC Table 4 3 Specification of SYNC pin voltage Vsync No VIN Lo level Hi level min max min max 1 lt 5 5V VIN 1 0V 0 2V 0 3V 2 0V 2 gt 5 5V 4 5V HAs shown in Fig 4 12 frequency synchronization is possible with out using an outside clock 9 HVN VOUT 4 CLK NO 2981 De jD BRNS L CLK oad Input TN Lay GND o o 1 VIN VOUT 9 9 SYNC BRNS me GND Cc n Fig 4 12 Example of CLK pin connection WThe maximum synchronization number is 5 After the power supply which output CLK started please start the synchronizing power supplies And when stop power supplies you should stop the powersupply which output CLK at first WThe max voltage of CLK pin is DC input voltage WiPlease connect ZDci when the voltage more than 5 5V is input into SYNK pin refer to Table 4 3 Hit is not possible to shorten rise time when not using this function CO EL 5 Series and Parellel operation 5 1 Series operation Series operation is not possible 5
6. 4 7 Example of sequence control Wif this function is unnecessary please make SEQ pin open BRNS 9 COSEL 4 6 Power good By using PGOOD it is possible to monitor power supply whether normal operation or abnormal operation HPGOOD terminal inside is comprised of an open drain Sink current of PGOOD is 50A min ONO 4 VIN VOUT Q 4 100k2 PGOOD du l 50 LA min DC 1mA max ie lt Load nput 5V max GND e Fig 4 8 Example of PGOOD circuit llVoltage of PGOOD pin become low when over current protection circuit is work or output voltage is different from a set point more than 10 Wf this function is unnecessary please make PGOOD pin open 4 7 Sequence WFig 4 9 is a sequence chart of each function of BRNS Startup power supply start voltage od _ over current k gt 2 0ms typ i RC OFF RC ON Fig 4 9 Sequence chart of BRNS 4 8 Frequency synchronization HBRNS can operate at the switching frequency that synchronized to frequency of square wave input into SYNC pin There is a delay of 300nsec WFig 4 10 is example of frequency synchronization And recom mended wave form of SYNC pin is shown in Fig 4 11 Wilf this function is unnecessary please make PGOOD pin open or short to GND WiPlease wire the input pin of both power supplies which is syn chronizing to the same pattern and voltage BRNS 1
7. BRNS CO EL Basic Characteristics Data Basic Characteristics Data Series Parailel Model Circuit method frequency E a Pu 5 operation reference A protection Material sided dedi En qe BRNS6 Buck Converter 600 1 glass fabric base epoxy resin Multilayer BRNS12 Buck Converter 600 x1 glass fabric base epoxy resin Multilayer BRNS20 Buck Converter 600 1 glass fabric base epoxy resin Multilayer 1 Refer to Specification BRNS 4 seme ye HMM Instruction Manual COSEL Pin Connection BRNS 6 Connection for Standard Use BRNS 6 Wiring Input Output Pin BRNS 1 ex WIRT TSU SIT uuum rnm nnnm nm nnne nnm menn ennt BRNS 7 SA WE OU O seeen BRNS 7 Function BRNS 8 ROVE rc Unen protectio ni aa AME BRNS 8 MR e morc ONORE LL AA AU BRNS 8 4i8 RSTMOUS SEWMSIIMNG EE BRNS 8 d4 m Adustablelvoltagelrandgct BRNS 8 dS Sostar Siar up sequence S BRNS 9 MORROwWengood a a BRNS 10 CS SCC UN CC aaa BRNS 10 zl ourecuenevasvIcu zar BRNS 10 Series and Parallel Operation BRNS 11 el SSHASS O B SALMO a eee e ne ee ne senesoseecesnenannessoeeennssnunnssoseeuensiennnioss BRNS 11 M aralelfoperaton d BRNS 11 6 Implementation Mounting Method BRNS 1 SSM UntingiMeihno di aaa BRNS 11 GM MIODCMVIOUM o BRNS 11 SS SORME csesssssasesetssssassessensosonisn beeps desesodsosdeocsssaiasmnanE BRNS 11 CUMMECloanu BRNS 11 6 5 Storage method BRNS 11 Safety
8. ation between input and output If double or reinforced insulation is required it has to be provided by the end use equipment in accordance with the final build in condition Safety approved fuse must be externally installed on input side BRNS 12 Instruction Manual 8 Derating 8 1 BRNS series Derating MMake sure the temperatures measurement locations shown from Fig 8 2 and Fig 8 3 below are on or under the derating curve in Fig 8 1 Ambient temperature must be kept at 85 C or under 100 50 Load factor 40 0 Temperature of measurement location C 120 Fig 8 1 Derating curve Temperature measurement location Fig 8 2 Temperature measurement location BRNS6 12 Temperature measurement location Fig 8 3 Temperature measurement location BRNS20 cO EL DC DC Converters POL Type Instruction Manual 9 Package Information WiPlease refer to a Fig 9 1 to Fig 9 3 for Package form R
9. awn and the pattern may be damaged The pattern disconnection can be prevented by installing the pro tection parts as close as possible to a load 4 4 Adjustable voltage range WlOutput voltage is adjustable by the external resistor WThe temperature cofficiect could become worse depending on the type of a resistor Resistor Metal film type coefficient of less than 100ppm C WWhen TRM is opened output voltage is 0 6V Rraw is calculated in the following expressions 12 kQ Vout 0 6 l Rmy Table 4 2 Calculation result of Rram No VOUT RTRM 1 0 6 OPEN 2 1 2 20 00kQ 3 1 8 10 00kQ 4 2 5 6 32kQ 5 3 3 4 44kQ 6 5 0 2 73kQ CO EL VOUT TRM Load Ream GND Fig 4 4 Connecting Rram Please use the output voltage in the operating area of Fig 4 5 Transient responsce may worsen when used in vicinity of the bor der of the operating area WOnly for output voltage is rising and output current is small there is a possibility that the ripple voltage is high value If the ripple voltage value is problem connecting a capacitor of table 3 4 value Connect an external capacito r ape 12 y y fod o 10 7 Operating area Z g5 to t 28 3 i 2 6 6 5 4 2 2 25 3 35 4 45 5 55 Output Voltage V 0 0 5 1 15 0 6 Fig 4 5 Operating area
10. eel 5 j EThe packed number is 200 9 8 t 240 1 15 2 s E 0 5 0 05 EB eee W2 pq p f 3 BS 4 Tj L 2040 1 Model Tape width mm W1 mm W2 mm 7 810 8 oo BRNS6 24 25 541 0 29 541 0 Tape feed direction B B cross section BRNS12 24 25 5 1 0 29 5 1 0 BRNS20 32 33 5 1 0 37 5 1 0 Fig 9 3 Reel dimensions of BRNS 12 8 0 A A cross section Please refer to specifications for the details of package informa Fig 9 1 Taping dimensions of BRNS6 12 tion 4t0 4 Le 15 s 5 0 50 05 250 1 i Du EA lt B u Kf a n P9919 po p E A i r 4 S x F A g L p t 2 i i i 2 i RO 7 8 8 0 1 20501 e NES EAE a e B B cross section 1 5 To i T Tape feed direction 122 A A cross section Fig 9 2 Taping dimensions of BRNS20 BRNS 13
11. install an external input filter as shown in Fig 3 1 in order to re duce conducted noise Cin is shown in Table 3 2 L1 F1 eus TY IN DC input Ci Ci i 4 GND C1 100pF L1 0 20H Fig 3 1 Example of Recommended external input filter 4 Reverse input voltage protection WAvoid the reverse polarity input voltage It will damage the power supply It is possible to protect the unit from the reverse input voltage by installing an external diode as shown in Fig 3 2 VIN al DC IN GND Fig 3 2 Reverse input voltage protection 3 2 Wiring output pin MWhen the BRNS series supplies the pulse current for the pulse load please install a capacitor Co between VOUT and GND pins VOUTO 3 Pulse Load GND 0 e Fig 3 3 wiring external output capacitor Instruction Manual Table 3 3 Recommended capacitor and max Co No Model Recommended Max Co 1 BRNS6 47uFx1 100uFx1 1 000uF BRNS12 47uFx1 100uFx1 1 000uF BRNS20 100uF x2 1 000uF The output ripple voltage may grow big by resonance with Co and ESL of the wiring If resonance frequency and switching frequency are close HRipple and Ripple Noise are measured as shown in the Fig 3 4 Cin is shown in Table3 2 Co1 and Co2 is shown in Table 3 4
12. of BRNS series EWhen start of DC INPUT is slow BRNS may start on the outside of the operating area By the circuit of the Fig 4 6 you can raise the start up voltage VIN DC RC INPUT GND Fig 4 6 RC circuit for start up 4 5 Softstart Start up sequence WThe adjustment of the rise time is possible by connecting Csea Cseo nF 6xTaise ms 15 WiCseo should be less than 1ysec BAt the time of start the output voltage follows the SEQ voltage Output voltage and SEQ voltage are expressed in the following calculation Instruction Manual Q VOUT Vs x xe 4 TRM x Vseq lt 0 6V With the voltage to input into SEQ pin you can control a start se quence of plural BRNS 1 The same time Rsea2 T 0 6 Rseai Rsea2 Vout A Set Point VOUT Bo go VOUT A jag VOU Rseai SEQ TRM 9A D BRNSA Spex BRNSB Zn GND GND l i 4VOUTA 4VOUTB 2 The same voltage Histo 0 6 Rseai Rseaz Vout Byset Pointy VOUT A9 VOUT Bo RG Recor G oSEQ TRM9A D BRNSA Za BRNSB Same GND GND 4 4 V VOUTA VOUTB MS MS VacA t 3 The time lag VOUT B9 dRe VOUT A C VOU Reco SEQ TRM VIN D BRNSA BRNS B Zn GND GND 4 i 4VOUTA VOUTB VacA Fig
13. ptional Positive H level 3 0 VIN or open ON MWhen remote on off function is not used please open RC or con nected to the GND terminal VIN VIN DG 0 RC RC input sw i GND GND a b RC VCC lt Vin RC ono ah IC External GND Power supply c d Fig 4 1 RC connection example 4 3 Remote sensing 1 When the remote sensing function is not in use LOAD Short at pin root Fig 4 2 Connection when the remort sensing is in use BRNS 8 Instruction Manual lWWhen the remote sensing function is not in use it is necessary to confirm that pins are shorted between S amp VOUT and between 8 amp GND MWire between S amp VOUT and between S amp GND as short as possible Loop wiring should be avoided This power supply might become unstable by the noise coming from poor wiring 2 When the remote sensing function is in use Wire as close as possible VOUT S Load S GND Fig 4 3 Connection when the remort sensing is in use HT wisted pair wire or shield wire should be used for sensing wire Thick wire should be used for wiring between the power supply and a load Line drop should be less than 0 5V Voltage between VOUT and GND should remain within the out put voltage adjustment range Wif the sensing patterns are short heavy current is dr
14. s max B 1 0 5 0C s B Tp Max245 C 10s max Tx 220 C or more 70s max C 1 0 5 0C s Fig 6 1 Recommended reflow soldering condition 6 4 Cleaning WWhen cleaning is necessary clean under the following conditions Method Varnishing ultrasonic wave and vapor Cleaning agents IPA Solvent type Total time 2 minutes or less Do not apply pressure to the lead and name plate with a brush or scratch it during the cleaning After cleaning dry them enough 6 5 Storage method WTo stock unpacked products in your inventory it is recommended to keep them under controlled condition 5 30 C 6096RH and use them within a year W24 hour baking is recommended at 125 C if unpacked products were kept under uncontrolled condition which is 30 C 60 RH or higher Original reels are not heat resistant Please move them to heat resistant trays in preparation to bake To check moisture condition in the pack Silica gel packet has some moisture condition indicator particles Indicated blue means good Pink means alarm to bake it WThe reels will be deformed and the power supply might be dam aged if the vacuum pressure is too much to reseal BRNS 11 BRNS cO EL 7 Safety Considerations WTo apply for safety standard approval using this power supply the following conditions must be met This unit must be used as a component of the end use equipment The equipment must contain basic insul
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