SiP12109DB, SiP12110DB Demo Board User Manual for SiP12109
Contents
1. L 3 2 3 s 9i z Revision 30 Jan 14 5 Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 wa VISHAY www vishay com SiP12109DB SiP12110DB Vishay Siliconix BILL of MATERIAL ITEM QTY REFERENCE coorppint VALUE VOLTAGE DESCRIPTION PART NUMBER 1 3 Co4o2 TpK 35v GMK105BJ104KV F Taiyo Yuden 2 2 22urF 10v LMK212BJ226MG T Taiyo Yuden 1 C4 COBO5 TDK 22uF 35V C2012X5R1V226M125AC TDK 1 1 uF 25 V TMK107BJ105KA T Taiyo Yuden 4 1 ce C0402 TDK 22nF 50V CGA2B3X5R1H223K050BB TDK 5 4 co 402 047 50V C1005C0G1H471J050BA TDK 6 4 MLP44 16 SiP12109 SiP12109 Vishay Vout E cae 5002K ND Keystone EN PGD 8 1 L1 IHLP 1616 IHLP1616BZER1R0M11 Vishay 9 1 R1 R0402 Vishay 75 ka CRCW040275K0FKEDHP Vishay 10 1 R2 R0402 Vishay 0 RCG04020000Z0ED Vishay 4 R3 R0402 Vishay 6 04 CRCW04026K04FKED Vishay 12 2 R5 R0402 Vishay 100 ka CRCW0402100KFKED Vishay 13 2 R6 R7 R0402 Vishay 5 11 z CRCW04025K11FKED Vishay Vishay Siliconix ma2. The regulator integrates a full protection feature set including output overvoltage protection OVP output under voltage protection UVP and thermal shutdown OTP It also has UVLO for the input rail and an internal soft start The SiP12109 is available in lead Pb free power enhanced 3 mm x 3 mm QFN 16 package Revision 30 Jan 14 FEATURES e 4 5 V to 15 V input voltage e Adjustable output voltage down to 0 6 V e 51 12109 6 A 51 12110 continuous output current e Selectable switching frequency from 400 kHz to 1 5 MHz with an external resistor e 95 peak efficiency e Stable with any capacitor No external ESR network required e Ultrafast transient response e Power saving scheme for increased light load efficiency e 1 accuracy of Vour setting Cycle by cycle current limit Fully protected with OTP SCP UVP OVP e PGOOD Indicator e 40 C to 125 C operating junction temperature e Output voltage tracking APPLICATIONS e Point of load regulation for low power processors network processors DSPs FPGAs and ASICs e Low voltage distributed power architectures with 5 V or 12 V rails e Computing broadband networking LAN WAN optical test and measurement e A V high density cards storage DSL STB DVR DTV industrial PC ORDERING INFORMATION DEMO BOARD PART NUMBER MAX OUTPUT CURRENT SiP12109DB 4A SiP12110DB 6A SPECIFICATION This reference board
3. allows the end user to evaluate the SiP12109 or the 51 12110 chip for its features and all functionalities It can also be a reference design for a user s application Input voltage V 4 5 to 15 Output voltage V 0 6 to 5 Output current A 0 to 4 for 51 12109 0 to 6 for 51 12110 Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 ww VISHAY www vishay com CONNECTION AND SIGNAL TEST POINTS Power Sockets Vin J1 GND J4 Input voltage source with Vij to be positive Connect to a 4 5 V to 16 V source that powers 51 12109 Vout J2 GND J3 Output voltage with Vour to be positive Connect to a load that draws less than 4 A current SIGNAL AND TEST LEADS EN J5 When the pin is grounded the SiP12109 is disabled A voltage above 1 5 V will be seen as HI and enable the part allowing switching to occur PGD J6 Is an open drain output and is pulled up with a 100 resistor to When FB or Vour are within 25 percent of the set voltage this pin will go HI to indicate the output is okay POWER UP PROCEDURE To turn on the reference board apply 12 V to and another supply gt 1 5 V to the EN pin J10 The board will come up in ECO power save mode with an output voltage preset
4. aterial that has incredible saturation levels compared to competing products Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 Vsa SIP 12109DB SiP12110DB www vishay com Vishay Siliconix OUTPUT CAPACITORS REFERENCE BOARD PHOTOS Voltage rating ESR transient response overall PCB area and cost are requirements for selecting output capacitors The types of capacitors and there general advantages and disadvantages are covered next Electrolytic have high ESR dry out over time so ripple current rating must be examined and have slower transient response but are fairly inexpensive for the amount of overall capacitance Tantalums can come in low ESR varieties and high capacitance value for its overall size but they fail short when damaged and also have slower transient response Ceramics have very low ESR fast transient response and overall small size but are expensive and come in low capacitance values compared to the others above The SiP12109 is an advanced current mode constant on time controller which eliminates the minimum output ripple voltage required by voltage mode based controllers and can operate stably with an all ceramic output capacitance SOFT START The external soft start cap is char
5. ged via a 5 pA current source Using this formula we can calculate the soft start time SS Cext x 0 8 V 5 pA Using a 10 nF cap we get 1 ms typical soft start time which is dependent on Vour level also Fig 2 Bottom of the PCB Revision 30 Jan 14 3 Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 VISHAY _ SiP1210DB SiP12110DB Vishay Siliconix PCB LAYOUT Fig 3 Top Layer Fig 5 Inner Layer 1 Fig 4 Inner Layer 2 Fig 6 Bottom Layer Revision 30 Jan 14 4 Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 SiP12109DB SiP12110DB www vishay com Vishay Siliconix SCHEMATIC OF DEMO BOARD ww VISHAY VOUT 1 5k11 R7 N a 8 1009 l O gt 8 zy taN9d 2 x ss CN Z amp ZL 5 q A 9 j hg 2 o g gt lt co N P Q Z A Q
6. intains worldwide manufacturing capability Products may be manufactured at one of several qualified locations Reliability data for Silicon Technology and Package Reliability represent a composite of all qualified locations For related documents such as package tape drawings part marking reliability data see www vishay com ppg 64324 Revision 30 Jan 14 6 Document Number 64324 For technical questions contact powerictechsupport vishay com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS SET FORTH AT www vishay com doc 91000 Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery amp Lifecycle Information Vishay SIP12109DB SiP12110DB
7. oltage but an all ceramic output solution can bring output ripple voltage to a much lower level since the ESR of ceramics is very small This can cause stability issues with other COT controllers which require a minimum ripple voltage but not with the SIP12109 which uses current mode control The SiP12109 can work with any type of output capacitors that suits your needs INDUCTOR SELECTION Knowing Vin Vout Fsw full load current and choosing a ripple current el that s between 20 to 50 of full load current we can calculate an inductor value Vout L Vin Vout Fsw x Vin x Al x lout max 1 2 12V 1 2V x 1 pH 1x 106 12Vx0 25x4A INPUT CAPACITORS The input capacitors are chosen as a combination of bulk and ceramic capacitors to satisfy cost RMS current ESR input voltage ripple requirements and a source for instantaneous energy and filtering that the converter may require INDUCTORS Other than the inductance the DCR and saturation current parameters are key values The DCR causes an I R loss which will decrease the system efficiency and generate heat The saturation current has to be higher than the maximum output current plus 1 2 the ripple current In over current condition the inductor current may be very high All this needs to be considered when selecting the inductor On this board Vishay IHLP 2525EZ series inductors are used to meet cost requirement and get better efficiency and utilizes a m
8. to 1 2 V This will allow much higher efficiency due to lower switching frequency at zero to very light loads As the load increases the frequency will increase until the nominal set frequency preset to 1 MHz is reached When applying higher than 12 V to the input it is recommended to install a RC snubber from LX to GND There are place holders on the reference board R4 and C23 for the snubber Values of 5 6 Q and 0 39 nF are a reasonable starting point COMMON ADJUSTMENTS MADE TO THE REFERENCE BOARD OUTPUT VOLTAGE ADJUSTMENT The evaluation board is configured for a 1 2 V output If a different output voltage is needed simply change the value of Vout and solve for R11 based on the following formula Vref 0 6 V R11 R7 x 5 11 x 1 2 V 0 6 V Vout Vref 5 11 Revision 30 Jan 14 SiP12109DB SiP12110DB Vishay Siliconix CHANGING SWITCHING FREQUENCY The following equation illustrates the relationship between ON time Vin Vout and Ron value Vout Ton Ron xKx t ViN where K is a constant set internally 17 10 12 Once ON time is set pseudo constant frequency is then determined by the following equation Vour V Pawa z ToN Ron x VIN OUTPUT RIPPLE VOLTAGE Output ripple voltage is measured at the a tip and barrel measurement across Cour or use the probe jack located at Vour Typically output ripple voltage is set to 3 to 5 of the output v
9. ww VISHAY www vishay com SiP12109DB SiP12110DB Vishay Siliconix Demo Board User Manual for SiP12109 4 A and SiP12110 6 A 4 5 V to 15 V Input Synchronous Buck Regulators THE CHIP PRODUCT SUMMARY SiP12109DMP T1 GE4 Input Voltage Range 4 5 15 V Output Voltage Range 0 6Vto5 5 V Operating Frequency 400 kHz to 1 5 MHz Continuous Output Current 4A Package QFN16 3 mm x 3 mm PRODUCT SUMMARY SiP12110DMP T1 GE4 Input Voltage Range 4 5 15 V Output Voltage Range 0 6 V to 5 5 V Operating Frequency 400 kHz to 1 5 MHz Continuous Output Current 6A Package QFN16 3mm x3 mm DESCRIPTION The SiP12109 and SiP12110 are high frequency current mode constant on time CM COT synchronous buck regulator with integrated high side and low side power MOSFETs The SiP12109 is capable of 4 A continuous current and the SiP12110 is capable of 6 A These regulators produce an adjustable output voltage down to 0 6 V from 4 5 V to 15 V input rail to accommodate a variety of applications including computing consumer electronics telecom and industrial The CM COT architecture delivers ultra fast transient response with minimum output capacitance and tight ripple regulation at very light load The parts are stable with any capacitor type and no ESR network is required for loop stability The devices also incorporate a power saving scheme that significantly increases light load efficiency
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