SiC413DB SiC413 Reference Board User's Manual 4 A, 26
Contents
1. required Duty cycle 1 to 2 or whatever is required Amplitude 12 V low level and 10 V igh level Rising time and falling time 1 s or whatever is required 3 Connect the function generator output positive to LDTRG and negative to GND 4 Preset the curent ot an electronic Joad to h and tum it 5 Set up an 0 8090020 using the following parameters Channel 1 for probing output voltage AC coupled 20 mVidv to 50 mV 100 mV offset or whatever is required ane ae ee Outpt Voge an ill ew waste current Vishay Siliconix Channel 2 for probling the current on the 3 01 2 resistor R2 needs to be an isolated probe DC coupled 3 Vis corresponds to 1 Ald far lo lt 2 5 A or 5 Vidi corresponds to 1 661 Aldi forlo gt 25 A Time base 100 usdi Bandwidth 20 MHz Connect osciloscope channel 1 probe positive to Vour G11 and negative to GND 314 and channel 2 probe Positive to Vour 011 and negativa to Q1 DRAIN 7 Tum on the system power Output voltage should be shown on the electronic load with curent of 8 Tum on the power source for Vex Set the function generator output to be ON The transient response waveforms shouid be seen on the osciloscope 10 1 needed readjust the tigger waveforms rising and Taling time on the unction generator so that the current slow rate is satisfied he current slew rate can be seen on oscilloscope channel 2 wavetorm by seting the ime base to 1 us or 5002. 0 1350 Rev A BO
3. RG J8 GND J7 Load stop contol signal inguk Connect Vera and GND to a power source Vex which supplies enough voltage to generate the load step needed Connect LDTAG and GND to a pulse generater that creates the MOSFET onvot signal for the kad step EN 041391595 signal input To enable the system leave this point open otherwise connect to any GND SLSR Laas curt Figure 412 33 VEtetency rears oom Becumena Number 65172 sme A MOS ww VISHAY SiC413DB SET UP LOAD STEP The hardware to test transient response is included in the board which allows users to see how the transient response perfor The setup steps are 1 Decide what load step is wanted then based on the output voitage calculate the extemal vollage Ving that wi be connected between Vom and GND For example a load stop of 2 A between 0 5 A h and 2 5 A is required and the output voltage is 3 3 V Vexr Vo lp h 301 A Vo 25 A 05 A 3010 2 72 V Preset a DC source voltage to Veer 272 V current eapabity around 1 A and connect it to the board wih postive side to GND and negative side to Vem I Ver is a postive value then connect the DC source postive to Vora and negative to GND 2 Preset a waveform from a function generator using the folowing parameters and set ts output to OFF reler to the specific function generator manual for lis setup Shape square Freqency 50 Hz or whatever is
4. SiC413DB Vishay Siliconix SiC413 Reference Board User s Manual 4 A 26 V Integrated Synchronous Buck Regulator THE CHI PRopuctsummany Trea Vode Fangs CAEN Cr 5 Operzing Freauency _4A EET Cs igh aa S A DESCRIPTION The 413 an integrated do o de power conversion solution with builtin PWM optimized high and low side channel MOSFETs and advanced PWM controller The 80413 provides a quick and easy to use POL voltage regulation solution tor a wide range of applications Vishay iconic proprietary packaging technology is used to optimiza the power stage and minimize power losses associated with parastic impedances and switching delays The co packaged Gen Ill TrenchFET power MOSFETs deliver higher efficiency than lateral DMOS monolihic olutone REFERENCE BOARD PHOTOS Figure 1 Top ofthe PCD FEATURES 4751026 V input votage range integrated PWM controller and Gen Il Yench MOSFETs ulin bootstrap diode oD kHz ied switching frequency intemal sot start Breaicbotore mako operation integrated current sense Cycle by overcurrent protection Output over voltage protection Thermal shutdown Quick and easy single chip convertor 80 8 package LOD TV settop box and DVD playar Desktop PC and server Aan graphic board Memory FPGA and uP device power suppl
5. aye Yuden T esescisen oe sav ewen VuoenyraogewisG ven T T e ss mv ewe a CC Vishay LT CET sv Siac cens CES Wasp es e sr mv ewes visssyrmogewiee Venay 7 c s sv swo vsosmyrsoQcwic vee e e ene zur sv scam Gnussenrrcemuera TuYO YUDEN ST os se sv sine onus vaosmvssaoQewisc ie e cec Napoaaa mv swe Vinay r s emer cre wow mv 5 EC Vinay De se v e CCC TK Ps RE Vw SOLDER BANANA se Raynor ee Va Probe Hook oa rerne a Vaan SOLDER BANANA GEJ Keystone EC RR 16862 Raat wht Waaa Probe Haake fz Keystone ajr x wn eoa verae sI n w 8563100 ERE ES Co 2 reame PTT gt T w SOLDER BANANA Ba Keystone ES TEGRGY PROBEPIN PROOTOIS RE m Vo robe Hook EA Tarare T m wasapa PROBE IN Proorois ER RR ae Eo se Kerono ST ae eee Probe Hook 62 rerne TT u Cr Vinay STACKING SPRCER a sama mv sos ETE Vinay oe SY Vinay De e sm ET A Vinay I e Dev Ses CC Vinay CRowoosscoieEx Vinay sao ssi 06s G TOKOFKE sI T TP ne sos Vinay SY Vinay at mo c sv swe oos Vinay sI T m L SV CRGWOG0320ROFKER Vinay t T Css CT s waw Gare Number 65172 80
6. gher than the maximum output curent plus ripple current In over current condition the inductor current may be drastically high AI these need to be put into consideration when selecting the inductor On this board Vishay IHLP4040DZ series inductors are used to meet cost requirement and get better efficiency a Qupa Voge Vatasen P crn Figure 12V 3 3 V Load Regulation OUTPUT CAPACITORS Vetage ESA rms current capabiity and capacitance are essential elements to consider when choosing output capacitors The ESR and capachance affect the output voltage ripple transient response and system stabilty The rms current capablly determines the capacitor power dissipation and Me time To meet all the 4 element requirements combination of ceramics and tantalum can be used CONNECTION AND SIGNAL TEST POINTS Power sockets Vis 1 GND J Input voltage source with Viy to be positve Connect a 4 75 V to 24 V source that powers SIC413 Your i GND J13 Output voltage with Vour to be postive Connect to a load that draws loss than 4 Current Signal and test leads Van 12 GND J5 Input voltage sense pins with Viy to be positve Connect to a voit meter or an 0408050092 probe if splay or waveform is needed Your 311 GND J14 Output voltage sense pins with Vout to ba postive Connect to a voit meter or an ostlloscope probe if display or waveform is needed Vem 38 LDT
7. ies APPLICATIONS Point of load de to de conversion Telecom and networking equipment Document Number e5172 300409200 0 ww veray com SiC413DB w VISHAY Vishay Siliconix THE REFERENCE BOARD This reference board allows the end user to evaluate the 80413 chip for t features and al functionalities It can also be a reference design for a user s application SPECIFICATION input voltage Vy 475 to 24 Output votlage V 0 6 10 12 0 Output current A 0 to 4 Tri board i by defaut preset to 3 3 V output with 12 V input The board can be aet to any output votage between 080 and 12 V and any input vonage between 4 75 V and 24 V For a specie ngutoupa vonage combination the value of inductor hd compensation network may need to be modfied and the Suputcapactore may need an erease or decrease INPUT CAPACITORS The input capacitors are chosen as a combination of 0 and ceramics so inat the capacitance the rms current the ESR the input voltage ripple and the cost can be al ty satisfied For a combination of high voltage input and low votage output ow duty cycle the eleciriyie capacitors C1 may not be required INDUCTORS t oflane shett inductors are to be used then their DCR and saturation current parameters are the key besides their inductance values The DCR causes an FR loss which wil decrease the system efficiency and generate heat on the board The saturation current has 10 be hi
8. ns 11 To change load step decrease or increase the value of Var 12 To cease transient response test simply set the function generator output to off tum off the power source for Ve and then shut down the system power CHANGE OUTPUT VOLTAGE at any time diferent output voltage is needed then simply change the value of R9 based on the folowing formula RO 7 1 100 508 1 Figure 5 An Example of Loud Step Waveforms Tocumen Number e5172 S09 1350 Rev A FO www veray oom SiC413DB Vishay Siliconix Lavour Figure 8 Inner Layer 2 Figure 7 Inner Layer 1 wears oom Document Number 65172 a 809 1350 Rev A 204 08 VISHAY SiC413DB Vishay Siliconix sommano a od Shy aod teh asada Na ggap a r Hr es fe Be k i a al H Gaon e o e Document Number e5172 mwn veray com Bs r SiC413DB w VISHAY Vishay Siliconix r CCCCCUC C Taw J vae TH PCS Footpint J PartNumber Manufacturer Ti 5 v 6850080580 Panasonic ER ER eaa ECT v CTS T
Download Pdf Manuals
Related Search