Basic characteristics data • Instruction manual
Contents
1. nanaonan Tm w Temperature of measurement location Fig 6 4 Derating curve CQHS250 For option B which is used with the convection cooling forced air cooling or conduction cooling use the temperature measurement location as shown in Fig 6 5 DVin DC36 60V CQHS2504850 100 80 CQHS2504832 60 40 Load factor Vin 36 60V 20 0 40 20 O 20 40 60 808 100 Aluminum base plate temperature Tc C DVin DC60 76V 100 80 60 40 25 E 20 0 Load factor 40 20 0 20 40 6065 80 95100 Aluminum base plate temperature Tc C Aluminum base a Tc Measuring point Fig 6 5 Derating curve CQHS250 option B CO EL Instruction Manual CQHS300 CQHS350 WUse the power modules with conduction cooling e g heat dissipa tion from the aluminum base plate to the attached heat sink Fig 6 6 shows the derating curves with respect to the aluminum base plate temperature Note that operation within the hatched ar eas will cause a significant level of ripple and ripple noise Contact us for more information on cooling methods mPlease measure the temperature on2. 4 6 Adjustable voltage range 1 Output voltage adjusting HOutput voltage is adjustable by the external potentiometer lWWhen the output voltage adjustment is used note that the over voltage protection circuit operates when the output voltage sets too high Hilf the output voltage drops under the output voltage adjustment range note that the Low voltage protection operates WEBy connecting the external potentiometer VR1 and resistors R1 R2 output voltage becomes adjustable as shown in Fig 4 4 recommended external parts are shown in Table 4 2 The 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 recom mended for the power supply Resistor eee Metal film type coefficient of less than 100ppm C Potentiometer Cermet type coefficient of less than 300ppm C HWhen the output voltage adjustment is not used open the TRM pin respectively caHs VOUT S Control Amp i R1 of rated L RA voltage _ O 25V T STRM PED VR Y RB RC 2kQ 1k as i A ee ee ee es pem Fig 4 4 Output voltage control circuit Table 4 2 Recommended Values of External Resistors Adjustable range No VOUT VOUT 5 VOUT 10 R1 R2 R1 R2 1 32V 51kQ 51kQ 2 50V 82kQ Tiko 82kQ Rene 2 Output voltage decreasing WEBy connecting the external resistor R
3. 40 to 85 C Ceramic capacitor CQHS300 CQHS350 Tc 20 to 100 C Electrolytic or Ceramic capacitor Tc 40 to 100 C Ceramic capacitor WThe capacitor must be installed less than 50mm of the power module As ripple current will flow through this capacitor pay at tention to the ripple current rating of the capacitor Ef the power module is to be turned ON OFF directly with a switch inductance from the input line will induce a surge voltage several times that of the input voltage and it may damage the power mod ule Make sure that the surge is absorbed for example by con necting an electrolytic capacitor between the input pins 4 Input Voltage Range Input Current Range Keep the input voltage ripple within the specification below Out put ripple voltage will increase as these values increase Ripple voltage CQHS250 300 350 less than 4Vp p HMake sure that the peak input voltage stays within the specified input voltage range of the power module lWlChoose a front end power supply that can supply enough current Ip Fig 3 2 for starting up the power module o 2 S o i o gt e gt voltage S E 5 5 E E Time St Fig 3 1 Input Voltage Ripple Input voltage range Ip Input current A Input voltage V Fig 3 2 Input Current Characteristics 5 Reverse Input Voltage Protection WAvoid applying reversed polarity voltage to the power module as it will damage the power
4. VOUT S RC TRM S VIN VOUT VOUT VOUT Others Less than Less than Less than Less than 19 6N 2kgf ence 9 8N 1kgf 9 8N 1kgf Less than 39 2N 4kgf Less than 19 6N 2kgf Fig 6 3 Stress onto Pins CQHS300 CQHS350 6 3 Cleaning Clean the soldered side of the power module with a brush Prevent liquid from getting into the power module Do not clean by soaking the power module into liquid WDo not allow solvent to come in contact with product labels in cas es as this may cause deletion of the letters printed on the product labels After cleaning dry the power modules well 6 4 Soldering temperature HFlow soldering 260 C for up to 15 seconds Soldering iron 26W 450 C for up to 5 seconds CQHS 16 6 5 Derating Wit is necessary to note the thermal fatigue life by power cycle Please reduce the temperature fl uctuation range as much as possible when the up and down of the temperature are frequently generated Contact us for more information on cooling methods CQHS250 Use with the convection cooling or the forced air cooling Make sure the temperatures at temperature measurement loca tions shown from Fig 6 4 below are on or under the derating curve in Fig 6 4 Ambient temperature must be kept at 85 C or under 100 80 60 40 20 946 20 0 20 40 60 80 100 120 Temperature of measurement location C Load factor
5. 1 or Fig 2 2 Reference 3 Wiring Input Output Pin 6 5 Derating WiShort the following pins to turn on the power supply VINGRC VOUTO S VOUTe S Reference 4 4 Remote ON OFF 4 5 Remote sensing WOnly DC voltage can be applied to CQHS Series Applying AC voltage will damage the power module e CQHS250 F1 8 OND VIN S VOUT 9 9 DC Cout input w RC zz Load VOUT VIN S Fig 2 1 Connection for Standard Use CQHS250 CQHS300 CQHS350 UUUUUVUUWUV Heat sink Mounting hole 4S F1 AS Ort ivin avour e Cout DC t input Sw RC zi Load L VIN NOUR Fig 2 2 Connection for Standard Use CQHS300 CQHS350 Table 2 1 External components No Symbol Component Reference 1 F1 Input fuse 3 1 1 External fuse 2 C Primary decoupling 3 1 2 Noise Filter Decoupling capacitor Capacitor 3 Cin External capacitor 3 1 3 External capacitor on the on the input side Input External capacitor fie in 4 Cout on the output side 3 2 Wiring output pin 5 Heat sink 6 5 Derating COSEL Instruction Manual 3 Wiring Input Output Pin 3 1 Wiring input pin 1 External fuse HThe input circuit of CQHS Series does not come with a built in fuse In order to protect the power module a normal blow fuse should be installed to VIN EWhen mult
6. Horizontal 2 F QB F2 12 7 58 7 37 3 Vertical 3 F QB F3 25 4 58 4 37 6 Horizontal 4 F QB F4 254 587 373 gt ReferPo68 aiea 5 F QB F5 38 1 58 4 37 6 50 Horizontal 6 F QB F6 38 1 58 7 37 3 Vertical W _ Ww o o l lo ol Q a O O O O i nnnnnnn mi I I Horizontal Vertical Fig 6 7 Heat Sink Types 10 E 8r g F QB F1 F2 g 6 F QB F3 F4 b F QB F5 F6 o M Cal Ko E T o I S L nn 2A TR e aaa E Ime A ne ah 0 0 0 0 5 1 0 1 5 2 0 2 5 3 0 Wind velocity m s Fig 6 8 Thermal Resistance of Heat Sink Forced Air CQHS 17 COSEL Instruction Manual 7 Safety Considerations To apply for safety standard approvals with the power module the following conditions must be met Consult us for more details e The power modules must be used as a component power supply in end use equipment e Neither basic isolation nor double reinforced isolation is provided across input output and the base plate of the power module If the power module is to be used with input voltage of more than 60VDC and needs basic or double reinforced isolation the re quired isolation must be provided in the construction of the final product e Use external fuses that comply with safety standards at the in put CQHS CQHS 18
7. 10 0 CR PN ol o 26 88 28 0 320 35 2 Output voltage V Fig 4 8 Output Current derating curve CQHS3504832 4 7 Withstanding Voltage Isolation Voltage lW When testing the withstanding voltage make sure the voltage is increased gradually When turning off reduce the voltage gradual ly by using the dial of the hi pot tester Do not use a voltage tester with a timer as it may generate voltage several times as large as the applied voltage CO EL Instruction Manual 5 Series and Parallel Operation 5 1 Series operation llSeries 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 a Power Supply Load Power Supply Power Supply Load Load Power 4 Supply Fig 5 1 Examples of series operation 5 2 Redundancy operation WiParallel operation is not possible ilRedundancy operation is available by wiring as shown below S A la VOUT d K gt VOUT S Load S 2 VOUT NOT Fig 5 2 Example of Redundancy Operation HEven a slight difference in output voltage can affect the balance between the values of lt and le Please make sure that the value of Is does not exceed the rated current o
8. COS EL Basic Characteristics Data Basic Characteristics Data i i ries Redundan Medel Cicutmotos irequoney Jet Rated suem LRE kHz protection Material sided sided operation operation CQHS250 Full bridge converter 140 1 glass fabric base epoxy resin Multilayer Yes 2 CQHS300 Forward converter 250 x1 Aluminum Yes Yes x2 CQHS350 Forward converter 250 x1 Aluminum Yes Yes x2 TT Refer to Specification 2 Refer to Instruction Manual CQHS CQHS 8 DER Ea EAN Instruction Manual CO EL Pin Configuration COHS 10 Connection for Standard Use CQHS 10 Wiring Input Output Pin CQHS 11 onl VV Fina m DUI NIME oS SS i aC CE ECT CQHS 11 S 28 MVNA IA CUO UIE UCSF Mss m I cc CQHS 11 Function cons 12 4 1 Overcurrent protection and Low voltage protection CQHS 12 42 Oyewoltage protection 0 00 550 CQHS 12 43 herumaliprotectiongsssssssse sies pcc DI D S CQHS 12 44 mxRemotej9 N GEER c SE SER CQHS 13 45 m Remotesensng ssec Ra DLL LLL RR CQHS 13 4 6 Ag ustable voltageirange sss 9555 ee 50 5 550 CQHS 14 4 7 Withstanding Voltage Isolation Voltage CQHS 14 CQHS Series and Parallel Operation CONS 15 Sil Senes operation 0900s osso osso ss eeee es CQHS 15 5 28 Red ndamey operatione c a EE CQHS 15 6 Implementation Mounting Method OQHS 15 6 1 Nounitingime Taa ne ee ee E
9. CQHS 15 GS tressiontoihepins uc E o CQHS 16 Go leaning ec EE CQHS 16 64 Soldering temperatlllesss sers a ca CQHS 16 6 5 DIST ge Lil nls piesa ccc x E CQHS 16 6 6 Heat sink CQHS300 CQHS350 Optional parts CQHS 17 Safety Considerations CQHS 18 CQHS 9 CQHS COSEL Instruction Manual 1 Pin Configuration e CQHS250 E o VOUT VIN 3 D S RCD o o TRM o S VINDO o o 4 VOUT e CQHS300 CQHS350 2 Mounting hole VIN O O VOUT o S RC O o TRM o BD S VIN O VOUT Fig 1 1 Pin configuration bottom view Table 1 1 Pin Assignment No Pin Name Function OD VIN DC input IRC Remote ON OFF VIN DC input D VOUT DC output l S Remote sensing B TRM Adjustment of output voltage QD S Remote sensing VOUT DC output Mounting hole Mounting hole No Pin Name Reference D ViIN 3 1 Wiring input pin IRC 4 4 Remote ON OFF O VIN 3 1 Wiring input pin D VOUT 3 2 Wiring output pin 4S 4 5 Remote sensing TRM 4 6 Adjustable voltage range s 4 5 Remote sensing VOUT 3 2 Wiring output pin Mounting hole 6 1 Mounting method CQHS 10 2 Connection for Standard Use WThe power module needs input and output connection as shown in Fig 2
10. D output voltage becomes adjustable to decrease The external resistor RD is calculated the following equation 100 RD 2 kQ A kQ Vor Vop A X100 Vor CQHS VOUT 4S Vor Rated output voltage V Von Output voltage needed to set up V TRM RD SEE S VOUT Fig 4 5 Connection for output voltage decreasing CQHS 14 3 Output voltage increasing WEBy connecting the external resistor RU output voltage becomes adjustable to increase The external resistor RU is calculated the following equation mu Vox 100 6 100 2XA 0 1 225 X A A96 Vou V A SL x 100 OR Von Rated output voltage V Vou Output voltage needed to set up V RU Fig 4 6 Connection for output voltage increasing 4 Intput voltage derating lW When the input voltage is 36 40VDC the output voltage adjust ment range becomes as shown in Fig 4 7 x 325 E 32 50 u u 110 o o Z ira 100 E A a lt lt 1 0 0 0 36 38 40 42 0 36 38 40 42 INPUT VOLTAGE V INPUT VOLTAGE V CQHS30048 CQHS25048 CQHS35048 Fig 4 7 Output voltage adjustment range 5 Output current derating CQHS3504832 WWhen the output voltage adjust less than rated output voltage the output current range becomes increasing as shown in Fig 4 8 12 0 zx a 0 5 Output current A
11. ase plate side order the power module with T option A heat sink can be mounted by affix ing a M3 tap on the heat sink Please make sure a mounting hole will be connected to a grounding capacitor Cv Table 6 1 Mounting Hole Configuration Mounting hole M3 tapped 3 4 thru Standard Optional T CQHS 15 CQHS CQHS COSEL Instruction Manual 6 2 Stress onto the pins HApplying excessive stress to the input or output pins of the power module may damage internal connections Avoid applying stress in excess of that shown in Fig 6 2 and Fig 6 3 Winput and output pins are soldered onto the internal PCB Do not bend or pull the leads with excessive force CQHS300 CQHS350 HAs unexpected stress may be applied to the pins set the diameter of the PCB mounting hole at 3 5mm WAs unexpected stress may be applied to the pins from vibration or shock fix the power module by using the mounting holes with screws to reduce stress WFix the power module to the PCB with the screws before soldering the input and output pins to prevent the PCB pattern being dam aged VIN o o VOUT o S RC o o TRM o S VIN o o VOUT VOUT VOUT Others lt lt gt d EF Less than Less than Less than U Less than 19 6N 2kgf 19 6N 2kgf 19 6N 19 6N Less than Less than 39 2N 4kgf 39 2N Fig 6 2 Stress onto Pins CQHS250 VIN
12. ensing is Not Used S VOUT K E Load VOUT Short at pin root Fig 4 2 When Remote Sensing is Not Used MWhen remote sensing is not used make sure VOUT and S are shorted and that VOUT and S are shorted as well Keep the patterns between S and VOUT and between S and VOUT as short as possible Avoid a looping pattern If noise en ters the loop the operation of the power module will become un stable 2 When Remote Sensing is Used Wire as close as possible V S U VOUT 7 Zu Cout VOUT Fig 4 3 When Remote Sensing is Used Y Load S HUsing remote sensing with long wires may cause output voltage to become unstable Consult us if long sensing wiring is necessary Sensing patterns or wires should be as short as possible If wires are used use either twisted pair or shielded wires HUse wide PCB patterns or thick wires between the power module and the load Line drop should be kept less than 0 3V Make sure output voltage from the power module stays within the specified range Wf the sensing patterns are shorted by mistake a large current may flow and damage the pattern This can be prevented by installing fuses or resistors close to the load As wiring or load impedance may generate oscillation or large fluctuations in output voltage make sure enough evaluation is given in advance CQHS 13 CQHS COSEL Instruction Manual
13. ercurrent protection prevents the unit from short circuit and overcurrent condition WThe DC output will be shut down when the output voltage drops under the output voltage adjustment range low voltage protec tion llRecovery from the protection is accomplished by applying 5VDC or less input for at least 1 second or toggling remote ON OFF signal for at least 1 second 4 2 Overvoltage protection The overvoltage protection circuit is built in The DC input should be shut down if overvoltage protection is in operation ERecovery from the protection is accomplished by applying 5VDC or less input for at least 1 second or toggling remote ON OFF signal for at least 1 second Remarks Please note that devices inside the power supply might fail when voltage more than rated output voltage is applied to output pin of the power supply This could happen when the customer tests the overvoltage performance of the unit 4 3 Thermal protection WlOver Temperature Protection OTP is built in If the temperature of PCB exceed 120 C CQHS250 or the base plate temperature exceed 100 C CQHS300 CQHS350 OTP will work causing the output voltage to drop llRecovery from the protection is accomplished by applying 5VDC or less input for at least 1 second or toggling remote ON OFF signal for at least 1 second after the unit should be cool down N CQHS250 Option N means the output voltage of the power module will be recovered auto
14. f a power supply Is the rated current value 6 Implementation Mounting Method 6 1 Mounting method i When multiple power modules are used side by side position them with sufficient spaces to allow adequate air ventilation so that the temperature of each power module will remain within the temperature range shown in the derating curves WDo not pass the DC input pattern underneath the power module as this will increase conducted noise Place the DC input pattern away from the power module Do not pass the DC output pattern underneath the power module as this will increase output noise Place the DC output pattern away from the power module lWHigh frequency noise is radiated from the power module When mounting the power module on a PCB leave a copper pattern on the PCB to let it act as a shield and connect this pattern to the mounting hole e CQHS250 WAvoid placing pattern layout in hatched area shown in Fig 6 1 to insulate between pattern and power supply 48 5 BO 7 VIN O VOUT o S RC o TRM o S VIN o VOUT Fig 6 1 Prohibition area of pattern layout top view CQHS300 CQHS350 Soldering CQHS series with printed board must be done under the flat condition by using the mounting hole and fixing with the screw If CQHS series is inclined and it s mounted the insulation of the internal components and printed board might not be kept lWWhen a heat sink cannot be fixed on the b
15. iple modules get input voltage from a single front end power supply a normal blow fuse must be installed to each mod ule Table 3 1 Recommended fuses Normal blow type Model CQHS25048 CQHS30048 CQHS35048 Rated current 15A 20A 20A 2 Noise Filter Decoupling Capacitor WAn appropriate filter must be used if conformance to the conduct ed noise regulation is required or if surge voltage may be applied to the unit Please consult us for more details CQHS300 CQHS350 BA decoupling capacitor Cy must be used to reduce the line noise on the input line and stabilize the power module operation Fig 2 2 Note that resonance and inductance from the input line filter may cause the power module to become unstable Wilnstall a decoupling capacitor Cv of at least 4700 pF as close to the input pins as possible within 50mm of the pins Wilf the total capacitance of the decoupling capacitor exceeds 15000 pF the specified isolation voltage between input and output may not be satisfied In this case either reduce the capacitance of the decoupling capacitor at the input or install a decoupling capacitor to the output 3 External capacitor on the Input WAn external capacitor Cin must be installed between VIN and VIN to reduce line noise and stabilize the power module opera tion Fig 2 1 and Fig 2 2 Capacitance CQHS250 300 350 at least 68uF X2 CQHS250 Ta 20 to 85 C Electrolytic or Ceramic capacitor Ta
16. matically when the fault condition such as OCP OVP or OTP is corrected CO EL Instruction Manual 4 4 Remote ON OFF HThe remote ON OFF function is incorporated in the input circuit and operated with RC and VIN If positive logic control is re quired order the power module with R option Table 4 1 Remote ON OFF Specifications CQHS250 ON OFF logic Between RC and VIN Output voltage L level O 1 0V or short ON EUST H level 4 0 7 0V or open OFF Optional Re L level 0 1 0V or short OFF R RA H lcvel 4 0 7 0V or open ON WWhen RC is at low level a current of 0 1mA typ will flow out When Vcc is used keep it within the following rage 4 x VCC s 7V When remote ON OFF is not used short RC and VIN Table 4 2 Remote ON OFF Specifications CQHS300 CQHS350 ON OFF logic Between RC and VIN Output voltage E L level O 1 2V or short ON EL H ievol 5 7 0V or open OFF Optional We L level O 1 2V or short OFF Positive Hi level 3 5 7 0V or open ON When RC is at low level a current of 0 5mA typ will flow out When Vcc is used keep it within the following rage 3 5 x VCC x 7V When remote ON OFF is not used short RC and VIN Vcc RC 6 RC e bids VIN l Opto coupler Transistor BCG n L RC S al VIN VIN IC Relay Fig 4 1 RC Connection Example 4 5 Remote sensing 1 When Remote S
17. module To protect the power module from reversed polarity voltage installing an external diode as shown in Fig 3 3 is recommended oo VIN T DC IN VIN Fig 3 3 Reverse Input Voltage Protection 3 2 Wiring output pin Minstall an external capacitor Cout between VOUT and VOUT to increase stability of output Fig 2 1 and Fig 2 2 Recommended capacitance of Cout is shown in Table 3 2 and Table 3 3 EChoose a high frequency type electrolytic capacitor for Cout Out put ripple and rise time will be influenced by the capacitor s ESR and ESL and the wiring impedance BAs ripple current will flow through capacitor Cout pay attention to the ripple current rating of the capacitor Wilnstall capacitor Cout as close to the power module as possible within 50mm This is useful for reducing radiated noise and increasing stability of the power module operation MWhen the capacitance of external output capacitor Cout is high it may unstabilize the operation of power supply so please refer to Table 3 2 and Table 3 3 for the value of the external capacitor Cout CQHS 11 CQHS CO EL Instruction Manual Table 3 2 Capacitance Values for External Output Capacitor Cout uF CQHS250 DIDI Recommended capacitance TEE Ambient temperature voltage V capacitance gei Ta 40 20C Ta 20 0 C Ta 0 85 P 32 470 470 220 2200 50 330 100 100 1000 Table 3 3 Capacitance Value
18. s for External Output Capacitor Cout uF CQHS300 CQHS350 Output Recommended capacitance onam Base plate temperature voltage V capacitance geiv Tc 40 20C Tc 20 0 C Te 0 100 d 32 470X2 470X2 470 3300 50 330X2 330 330 2200 WThe specified ripple and ripple noise are measured by the method introduced in Fig 3 4 and Fig 3 5 e CQHS250 50mm 4S Measuring board I a VIN VOUT input up RC 0 1UF Load Cout Nm VOUT A gh I Oscilloscope n 1 5m 502 H BW 100MHz Coaxial Cable C R 500 L4 C 0 01 UE Fig 3 4 Method of Measuring Output Ripple and Ripple Noise CQHS250 CQHS300 CQHS350 50mm Mounting S Measuring board Cv 7 4700pF hole D gt VIN VOUT si Cout Co DC zo 7 7 04HF input Cin RC Load VIN VOUT HE Oscilloscope n 1 5m 500 F BW 100MHz F Coaxial Cable I i I Ca LST IG 002 Co 32V 4704 F 01 HF 50V 2204 E 5 0 Fig 3 5 Method of Measuring Output Ripple and Ripple Noise CQHS300 CQHS350 CQHS 12 4 Function 4 1 Overcurrent protection and Low voltage protection WlOvercurrent protection is built in and comes into effect at over 105 of the rated current Ov
19. the aluminum base plate edge side when you cannot measure the temperature of the cen ter part of the aluminum base plate In this case please take 5deg temperature margin from the derat ing characteristic of Fig 6 6 Vin DC36 60V 100 m Load factor 3 85 40 20 0 20 40 60 80 100 Aluminum base plate temperature Tc C CQHS300 Vin DC60 76V CQHS350 Vin DC60 65V Z 8 CQHS300 Vin DC60 76V 50 CQHS350 Vin DC60 65V 8 A o H Z 95 40 20 0 20 40 60 80 100 Aluminum base plate temperature Tc C Tc Measuring point Aluminum base plate T Fig 6 6 Derating curve CQHS300 CQHS350 6 6 Heat sink CQHS300 CQHS350 Optional parts ECQHS300 CQHS350 works with conduction cooling and needs heat dissipation using heat sinks Optional heat sinks are avail able for CQHS Series Refer to Table 6 2 for details on the thermal resistance of heat sinks Table 6 2 Types of Heat Sinks Available Size mm Thermal resistance C W No Model Convection Style Al w I ID 0 1m s Forced Air 1 F QB F1 12 7 58 4 37 6 14 0
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