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1. i e OOO MidLayer2 Figure 15 Top Layer Artwork 3 Oz Copper Figure 17 Midlayer 2 Artwork 2 Oz Copper MidLayer3 Figure 16 Midlayer 1 Artwork 2 Oz Copper Figure 18 Midlayer 3 Artwork 2 Oz Copper Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 11 of 13 A Vicor Subsidiary PCB Artwork Plots continued 0 250 26 0 335 e Fi id o 0 Evaluation Board era Ven Ha DC Converter OUT HE IHF pips 00 101 HET e e pem 3100 2 430 C J 213101 0 4 2 22 8 2 92 MidLayer4 Figure 19 Midlayer 3 Artwork 2 Oz Copper Figure 21 Mechanical Drawing O O O O O O 2 2 NY9S 00809 Bottom Layer Figure 20 Bottom Layer Artwork 3 Oz Copper Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 12 of 13 ISILON im SO EINE V Warranty Vicor products are guaranteed for two years from date of shipment against defects in material or workmanship when in normal use and service This warranty does not extend to products subjected to misuse accident or improper application or maintenance Vicor shall not be liable for collateral or consequential damage This warranty is extended t
2. Use the current analog output signal from the load or a current probe to measure the output load current step This signal will be used as a trigger for the oscilloscope Turn on the enable switch and record the transient response of the PI3101 It should like the the plot in Figure 10 the trigger slope the oscilloscope and repeat the test to capture the 50 25 step results The plot should look like that shown in Figure 11 Rev 1 0 Apr 15 2010 Page 8 of 13 Typical Performance Characteristics Tek cStop E 5 E TRI TE d 500mV ELITE 7 1 18V Cha 29 Dec 2008 i 20 40 10 59 20 Figure 5 Start Up 36V Ch4 Vout 1V div Ch2 Vin 50V div y i 1 Trigger P EE erm 500 0 OF 4 32V 1 00 V M 4 Source Coupling Slope Level Type Normal Ch4 DC X 2 32 V Holdoff Figure 6 Turn Off W Enable Strap Ch2 ENABLE 5V div Ch4 Vout 1V div Tek A Trigger i i 1 Source B Cha Vou Bandwidth ME ME M chi Di o 1 Oops A Ch4 50 26 40 1 Mode Source Coupling Slope Level Type z Auto Ch4 DC 7 2 00mv 000 Figure 7 Output Ripple 2 18A Load Ch4 50mv div Picor Corporation picorpower com Tek e Ch2 S00mV TTA 0ms Ch4 T 18V Ch4 1 00 V 54 29 Dec 2008 150 00 10 5
3. Ch2 lout 5A div Ch4 Vout 100mV div AC Thermal Considerations Ambient Temperature Degrees C The PI31 01 EVAL1 is supplied with optional Figure 13 Maximum Output Power 6 3mm Heat Sink Vs heatsinks At present Picor offers four different Ambient Temperature Vs Flow Rate heatsink options to accommodate the customers space and cooling needs Heatsinks are available in two sizes one with 6 3mm fins and the other with 11mm fins Each of those heatsinks can be ordered with a specific air flow direction in mind both cross flow and longitudinal are supported In order to guide the user during technical evaluations of our products here are some general guidelines for output power versus the amount of flow required for various ambient temperatures NY JT N PRI 1 2 TL Maximum Output Power Watts Zz eae im NE EE I ER EE EE NE a N ia E _ 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature Degrees Figure 14 Maximum Output Power 11mm Heat Sink Vs Ambient Temperature Vs Flow Rate Maximum Output Power Watts Ambient Temperature Degrees C Figure 12 Maximum Output Power Without Heat Sink Vs Ambient Temperature Vs Flow Rate Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 10 of 13 PCB Artwork Plots Oc 4 Qe arQ 9 EAE UE i4 9
4. Vicor against all damages Vicor s comprehensive line of power solutions includes high density AC DC and DC DC modules and accessory components fully configurable AC DC and DC DC power supplies and complete custom power systems Information furnished by Vicor is believed to be accurate and reliable However no responsibility is assumed by Vicor for its use Vicor components are not designed to be used in applications such as life support systems wherein a failure or malfunction could result in injury or death All sales are subject to Vicors Terms and Conditions of Sale which are available upon request Specifications are subject to change without notice Vicor Corporation Picor Corporation 25 Frontage Road 51 Industrial Drive Andover MA 01810 North Smithfield RI 02896 USA USA Customer Service custserv vicorpower com Technical Support apps Q2vicorpower com Tel 800 735 6200 Fax 978 475 6715 Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 Page 13 of 13
5. output voltage is now 1096 greater than 3 3V 9 3 63V 1 5 Power down the input supply and remove the TRIM_UP strap and add the TRIM_DN strap Power up the input supply and observe that the output voltage has now trimmed down 1096 1 5 to 2 97V Power down the input supply and set all configuration straps back to the default position 5 Dynamic Turn On Off S 5 4 Change For those with an isolated oscilloscope arrangement set the scope to trigger on the output voltage with a rising edge with a trigger level at 1 2V Set the time base to 40ms div and align the record position to record pre trigger information Turn the output enable switch off on the input supply Set the output voltage to 36V and then turn on the enable switch The input voltage should rise at some controlled rate determined by the current limit setting and the inrush current The scope should capture the turn on waveform like that shown in Figure 8 the trigger slope the oscilloscope from rising to falling Set the input voltage to 48V the turn off the enable switch on the input supply Observe the waveform shown in Figure 9 Repeat steps 5 1 to 5 3 at different line and load combinations 6 Dynamic Load Step 6 1 PI3101 EVAL1 Change Set the dynamic load to step from 25 load to 50 load with a 0 1A us slew rate This slew rate is achievable with most dynamic loads and moderate impedance connections
6. 0 Apr 15 2010 3 of 13 NI OHI NA NINO NNI 52 4900 7 Jdoocr NX SSINTEL T HVNH EXD 001 P VNH T ano T TIVNA a 10 O 110 dn WRIL aor fanor faor faor Janmor aor aor aor SS NTIL 1 qu ZN T8 uo joo so ro Ho omn o I ae OOM AOT I us d DS WL a D 2 Io 24055 31606 TH Q 100 5S o Pn T dm ASTI VE NI INIA AAA 2 0 Adoozr adot B 2 3 5 WL 4 M E gt 6 5 ono 2 gt LL 1 0 Apr 15 2010 4 of 13 PI3101 EVAL1 Picor Corporation picorpower com Fetes Pang _ ru PI3101 00 HVIZ Picor PI3101 High Density PSiP C8 C19 GRM21BR71A106KE5 Murata X7R Ceramic Capacitor 6 3V or equiv os __ Kemet 0 Cerri apa Soves 6 EEUFCZMTO aru F Panasonic Electrolytic Capacitor 100V 0 Ri MCR10EZPF9092 90 9k Ohm Rohm Resistor 0805 1 or equiv R3 MCRI0EZPF3013 301k Ohm Rohm Resistor 0805 1 or equiv R2 MCRI0EZPF1003 100k Ohm
7. 0Mhz BW Qty 1 DC Electronic Load 30A Minimum Qty 1 Small bench fan capable of 200LFM minimum Input Output cables appropriately sized 101 Product Datasheet Safety glasses Procedure 1 Connect Test Equipment 1 1 Connect the input DC power supply to the target board as shown in Figure 4 above The negative terminal should be wired to IN and the positive terminal should connect to the positive terminal of the DMM wired as a DC Ammeter Be sure that the proper sized wires are used to allow minimum voltage drop for a maximum input current of 3A Use ring lugs mated to the included fasteners on the evaluation board If your input power supply has remote sense capability it can be wired to the INN and INP test points if desired This is a convenient way to regulate the input to the 101 during testing Connect the positive terminal of the DMM to the IN lug on the evaluation board Connect the primary side DMM for measuring the input voltage to INN and INP respectively Connect the oscilloscope as shown in Figure 4 if you are planning to measure both primary and secondary signals at the same time If you do not have an isolated Picor Corporation picorpower com differential amplifier it is important to note that simultaneous measurement of both primary and secondary referenced signals using an oscilloscope with a grounded chassis 15 not recommended as it will short circuit the primary to secon
8. 3 TRIM DN Not Used 2 1 4 OPT1 Not Used 2 1 5 OPT2 Not Used 3 Power Up Testing 3 1 PI3101 EVAL1 After putting on your safety glasses set the input supply PS1 to OV and turn on the line power Configure the current limit of the input supply to about 3A DC This should give a good measure of soft start for the source and limit the inrush current in any input capacitors The evaluation board has no inrush limiting and the installed fuse is for steady state operation Rev 1 0 Apr 15 2010 7 of 13 3 2 Set the DMM s for measuring the appropriate values The Ammeter should be set for 3A at high range and the input voltage DMM should be set to measure as high as 80V DC The output voltage DMM should be set to 4V scale maximum Configure the oscilloscope to measure the appropriate values If measuring output voltage with the oscilloscope set to DC and limit the bandwidth to 20 2 Add an offset of 3 3V and use a 50mV div scale This way ripple and noise can be measured along with the DC value An alternative would be to use AC coupling for ripple measurements and DC coupling for DC values If using the differential probe refer to its user manual for the scaling factors as these can vary depending on the model used Set the DC load to the desired value between 0 18A Turn on the bench fan and orient it so that some small air flow occurs over the top of the PI3101 assembly At this p
9. 6 34 Figure 8 Turn On Time Vin 36V Ch2 50V div Ch4 Vout 1V div Ro Stop rt TT A Trigger Slope oo 1 1 soomv E 1 00 M 50 00 Mode Source Coupling Slope Level Type Normal Ch4 DC Normal Figure 9 Turn Off Delay 48V Ch2 Vin 50V div Ch4 Vout 1V div Tek Stop rt 1 Ch2 Offset n Vertical i Offset PO ar rosas ea Vout 100mV div Set to 0 A 20MHz Bandwidth Ch2 lstep 5A div 0 1A us pl 1 WE 5 00 40 Chl 7 4 36 V mn Ch 100mv 4 9 32 60 Fine Scale Coupling Bandwidth DC Off EU Position 20 MH2 7div 2 00 div Figure 10 Transient Response 25 50 0 1 Ch2 lout 5A div Ch4 Vout 100mV div AC PI3101 EVAL1 1 0 Apr 15 2010 9 of 13 EXP Trigger 1 Slope Vout 100mV div 20MHz CM 2 M H Cho step 5A div 0 press Uv 5 00 A 40 0 Chi X 3 76 V 5 100mV t 47 60 1 Y Mode 3 Source Auto Edge i amp Holdoff Figure 11 Transient Response 50 25 0 1A us
10. Rohm Resistor 0805 1 or equiv 1 MoRt0EzPF1000 100 Ohm Rohm Resistor 0805 1 or equiv _ _ DigrKeySwrPOTestPoint DW 5 aso eMnxTesjakAsemy Table 4 PI3101 EVAL1 Evaluation Board Bill Of Materials as installed em o p I RE EE ENE Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 Page 5 of 13 OSCILLOSCOPE DC 20MHZ BW DC ISOLATED DIFF AMMETER 0 3A AMPLIFIER PICOR 1 A Vicar Subsidiary iol Power Serie 01 Evaluation v3 y High Jensity Isolated DC DC Converter 4 C UTH Bs OUTP m 212 er mi eto 1 619 C JT 0 100V DC Ni One BERS 62 ELD gu 012 PLD mf Bo 24 _ 1 i n TRIM EARN om E PL cra YN ssl 1 0 1495 w PI3101 EVAL1 Figure 4 Initial PI3101 EVAL1 Test Setup Picor Corporation picorpower com PI3101 EVAL 1 Rev 1 0 Apr 15 2010 6 of 13 Initial Test Setup Continued Recommended Test Equipment Qty 1 Isolated DC Power Supply 0 100V DC 3A Minimum With Current Limit Capability Qty 2 Digital Multimeters 0 10A Qty 1 Digital Storage Oscilloscope DC 20Mhz BW Qty 1 Isolated Differential Amplifier Qty 1 DC Current Probe 2
11. dary isolation barrier Floating the oscilloscope is also not recommended due to the large capacitance introduced by this long standing practice The best practice is to use an isolated differential amplifier or use an oscilloscope with isolated channels That is the input returns are isolated from each other and earth ground Connect the output DC DMM to the test points OUTN and OUTP These test points are done in a Kelvin type manner so that they have no high current flowing in them Connect the DC Load to the output lugs OUT and OUT It is critical for this connection to be low inductance The 101 is capable of providing in excess of 20A DC Such a load current requires a low inductance connection especially if transient testing is to be performed The distance between the load and the power Supply accumulate significant inductance even with copper foil leads The best connection would be to bolt the evaluation board lugs to the load lugs directly In many cases this is not practical so some trade offs may be required It may be necessary in some cases to use one load for DC steady state measurements and an external fast transient test circuit which can be soldered very close to the converter for transient testing 2 Default Pin Strap Configuration 2 1 Ensure the pin straps are in the following default locations before proceeding 2 1 1 ENABLE Not Used enabled 2 1 2 TRIM UP Not Used 2 1
12. e proportional to the internal die temperature as well as over temperature shutdown restart and over temperature fault alarm signal Picor Corporation picorpower com PI3101 EVAL1 Rev 1 0 Apr 15 2010 Page 2 of 13 Evaluation Board Terminals Description And Pin Strap Options Pinname T NP N YP Y Optional test pad for connection of optional YN capacitor to external system ground Optional test pad for connection of optional YP capacitor to external system ground OUTP Test Pin Kelvin sense connection for output voltage and output voltage measurement test point OUTN Test Pin Kelvin sense connection for output voltage and output voltage measurement test point Test PIn PCB test jack for low noise measurement of the output voltage Table 1 PI3101 EVAL1 Input Output Pin Description Namee 7 Description Table 2 PI3101 EVAL1 Evaluation Board Pin Strap Description Name 7 Max Voltage 100V 100V Sia RP OUTP PI3101 p Ls C i db mi 4 HO ot W E I TRIM SS 100mA _ PHOT SGND 100mA Figure 2 PI3101 EVAL1 Evaluation Board 100mA OUTP 100mA OUTN 100mA Table 3 PI3101 EVAL1 Evaluation Board Maximum I O Ratings Length 3 10 inches X Width 3 10 inches Picor Corporation picorpower com PI3101 EVAL1 Rev 1
13. o the original purchaser only EXCEPT FOR THE FOREGOING EXPRESS WARRANTY VICOR MAKES NO WARRANTY EXPRESS OR LIMITED INCLUDING BUT NOT LIMITED TO THE WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE Vicor will repair or replace defective products in accordance with its own best judgment For service under this warranty the buyer must contact Vicor to obtain a Return Material Authorization RMA number and shipping instructions Products returned without prior authorization will be returned to the buyer The buyer will pay all charges incurred in returning the product to the factory Vicor will pay all reshipment charges if the product was defective within the terms of this warranty Information published by Vicor has been carefully checked and is believed to be accurate however no responsibility is assumed for inaccuracies Vicor reserves the right to make changes to any products without further notice to improve reliability function or design Vicor does not assume any liability arising out of the application or use of any product or circuit neither does it convey any license under its patent rights nor the rights of others Vicor general policy does not recommend the use of its components in life support applications wherein a failure or malfunction may directly threaten life or injury Per Vicor Terms and Conditions of Sale the user of Vicor components in life support applications assumes all risks of such use and indemnifies
14. oint all configuration straps should be at the default values the input supply should be on and set to zero the load is on and set to the desired load current and all measurement equipment is properly adjusted Set the oscilloscope to trigger on the output voltage rising edge with the time base set to 100us Use a trigger level of 1V or so Set the sweep type for single shot mode Increase the input voltage until the voltage reads 36V DC Observe the turn on characteristics similar to that shown in Figure 5 Increase the input supply to 48V Move the positive differential probe to the test point ENABLE and the negative differential probe to SGND Trigger the scope on the falling edge of ENABLE Add the ENABLE strap while the unit is running This should result in turn off of the converter and produce a waveform like that shown in Figure 6 Remove the enable strap and allow the converter to turn back on Set the load to 18A and configure the oscilloscope for measurement of 50mV div with a time base set to ius Set the trigger value on positive slope with a value of about 15mV Make sure that the bandwidth is set to 20MHz The resulting ripple waveform should look something like that shown in Figure 5 4 Trimming Picor Corporation picorpower com 4 4 Set the input supply to zero Add the strap to the TRIM UP pin strap Power on the input supply and increase the input voltage to 48V Observe that the
15. ration of the board over various temperature extremes Cool Power 101 Product Description The Cool Power 3101 is a very high density isolated DC DC converter implementing a high efficiency soft switching power architecture The 101 operates over a wide range input of 36V to 75Vdc delivering 60W output power 3 3Vout 18A yielding an unprecedented power density of 400W in PI3101 is available a space saving surface mountable 0 87 x 0 65 x 0 265 Power System in Package PSIP achieving 50 space reduction versus alternative solutions The switching frequency of 900kHz allows for small input and output filter components which further reduces the total size and cost of the overall system solution The output voltage is sensed and fed back to the internal controller using a proprietary isolated magnetic feedback scheme which allows for high bandwidth and good common mode noise immunity PI3101 requires no external feedback compensation and offers a total solution with a minimum number of external components A rich feature set is offered including 1096 output voltage trim capability remote enable over voltage protection adjustable soft start dual over current protection with auto restart to protect against both short circuit and overload and over and under input voltage lockout A unique temperature monitor and protection circuit is included that provides an analog voltag
16. v A Vicor Subsidiary RoHS PI3101 EVAL1 Cool Power Series PI3101 EVAL1 High Density DC DC Converter Evaluation Board User Guide Contents Introduction Page 1 PI3101 Product Description Page 2 Evaluation Board I O Description Page 3 Evaluation Board Schematic Diagram Page 4 Evaluation Board Bill Of Materials Page 5 Initial Test Set up Page 6 Testing Procedure Page 7 Typical Performance Characteristics Page 9 Thermal Considerations Page 10 PCB Artwork Page 11 Warranty Page 13 The PI3101 EVAL1 Evaluation Board is intended to acquaint the user with the benefits and features of the Cool Power Series of advanced very high density DC DC power converters It is not designed or intended to be used in end product applications Please read this document prior to the connection of test equipment and refer to the product datasheet for device specifications descriptions and characteristics Hemember to follow good lab safety practices and use safety glasses at all times Introduction The PI3101 EVAL1 evaluation board allows the user to test the basic operating principles of the PI3101 very high density DC DC power converter and experience the performance and
17. value of this Picor Corporation picorpower com PI3101 EVAL 1 Cool Power Series Figure 1 PI3101 EVAL1 Evaluation Board featuring the PI3101 Isolated 48V 3 3V 60W High Density DC DC Converter PI3101 00 HVIZ 36V 75V In 3 3V Out 18A solution compared to alternate conventional solutions Each evaluation board is populated with the components that could be used in a final design Additional component footprints are made available to allow the user to test different design Rev 1 0 15 2010 Page 1 of 13 configurations that may be required to meet their end needs The 101 EVAL1 is configured to support one single input 36V 75V and one single output 3 3V 918A Each board offers pin strap options for trimming the output voltage up and down turning the converter on and off and adding EMI system Y capacitors Additional parts are included to compensate for line impedance associated with long leads from the bench power supply to the converter Kelvin type test points are included to allow for easy and convenient connections of testing instruments for evaluation of efficiency line load regulation and transient response A low impedance oscilloscope connection using a Johnson jack is included for ripple measurement and evaluation of the output voltage during transient events Each demo board is equipped with a heatsink to allow high power operation with a small amount of air flow and to allow ope

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