PI3741-00-EVAL1

USER GUIDE | UG:305 PI3741-0x-EVAL1 ZVS Regulators Buck-Boost Evaluation Board Contents Page Introduction 1 Bill of Materials 2 Typical Connections 4 Vicor PCB Edge Connector Description 5 PAD Numbering 5 PAD Definitions 6 PCB Design Files 7 Introduction The PI3741‑0x‑EVAL1 evaluation board demonstrates the features and benefits of the Vicor ZVS Buck‑Boost regulator; pre-configured for either a 24 or 48V output voltage and rated for up to 150W. Please refer to the corresponding PI3741‑0x‑LGIZ data sheet for all power specifications. The PI3741‑0x‑EVAL1 evaluation board is used with the following ZVS buck-boost products: PI3741‑00‑LGIZ, PI3741‑01‑LGIZ. The evaluation board provides several options for applying input power (VIN and GND) and output load (VOUT and GND). The user can solder tab‑style banana jacks or wire, use threaded connectors with retaining nuts or solder turret pins for clip-on connections. The evaluation board comes with all of the PI3741-0x-LGIZ’s features accessible to the user. The current‑monitor function (IMON) is set up to monitor the PI3741-0x-LGIZ's output current, sensed across a 5mΩ resistor. The general purpose amplifier (VDIFF) comes pre-set with a gain of 2, but can be easily reconfigured for differential measurements by adding extra 0603 resistors. The I/O pins are brought out to the right edge of the evaluation board to allow for easy monitoring or for adding additional circuitry. The status of the PGD pin is indicated by a dual‑colored LED; red indicating a fault and green indicating no faults. The SYNCO (sync out) and SYNCI (sync in) pins are accessible to allow for paralleling or for synchronizing to an external clock. Shorting J5 between IMON and VSP on the board will connect the output of IMON to the positive input of the general purpose amplifier, allowing for user‑designed signal scaling and conditioning. A footprint for an external Soft-Start capacitor (0603) is available to tailor the start-up profile of the converter. The error amplifier’s output (EAO) is brought to a pin and in conjunction with the soft-start pin can be used for paralleling converters. The error amplifier’s input (EAIN) is not directly connected to a pin, but connects to the pin EXT_VREF via a 10kΩ series resistor. Applying a DC voltage to this pin will allow the user to change the regulated output voltage without changing the feedback network. The board is designed with an edge connector to facilitate testing at the factory, but this connection can also be used for board evaluation. The PCB is 4-layer FR-4 170Tg material with 2oz copper per layer, ENIG pad finish and a board thickness of 0.062in. UG:305 Page 1 Bill of Materials Table 1 Bill of materials populated components Qty Reference Designator Value Description Manufacturer Manufacturer Part Number 14 C1, C2, C3, C4, C5, C7, C8, C9, C10, C11, C12, C13, C14, CIN1 2.2µF Ceramic Cap, X7S, 100V, 1206 TDK C3216X7S2A225K160AB 1 CCOMP 4.7nF Murata GRM188R71H472KA01D 1 D1 Fault Status Rohm SML-P24MUWT86 2 FT1, FT2 TEST 1, TEST 2 2 J5, J6 1 L1 1 LMAG 1 PCB 1 PI3741 ZVS Buck-Boost 1 R5 1.00kΩ 5 RDIFF1, RDIFF2, REA3, RPGD, RSYNCI 10.0kΩ 1 REA1 Ceramic Cap, X7R, 50V, 0603 1 x 1mm Dual Color SM LED SM Testpoint Keystone 5015 0.1in Header Jumper Samtec TSW-148-07-F-S 65nH FP0404 Series Inductor Eaton FP0404R1-R065-R 0.9µH HCV1206 Inductor Eaton HCV1206-R90-R PI37xx-xx Edge Connector Eval Board VICOR PCB0175rD VICOR PI3741-0x-LGIZ Rohm MCR03EZPFX1001 Resistor, 1%, 0.1W, 0603 Rohm MCR03EZPFX1002 14.0kΩ for PI3741-00 Resistor, 1%, 0.1W, 0603 Yageo RC0603FR-0714KL 29.1kΩ for PI3741-01 Resistor, 1%, 0.1W, 0603 KOA Speer RN73H1JTTD2912F50 Yageo RC0603FR-071K07L Rohm MCR03ERTF49R9 Rohm MCR18EZHFLR510 Panasonic ERJ-M1WSF5M0U Rohm MCR03EZPJ000 Fairchild NC7WZ14EP6X Rohm MCH185CN104KK 1 REA4 1.07kΩ 1 RGP 49.9Ω 1 RIN 0.51Ω 1 RSENSE 0.005Ω 3 RSDA, RSCL, RZ1 0Ω 1 U1 NC7WZ14EP6X 1 CVDR 0.1µF Low Voltage ZVS B-B SIP 10 x 14mm Resistor, 1%, 0.1W, 0603 Resistor, 1%, 0.1W, 0603 Resistor, 1%, 0.1W, 0603 Resistor, 1%, 0.25W, 1206 Resistor, 1%, 1W, 2512 Resistor, 1%, 0.1W, 0603 Dual Schmidt trigger Inverter Capacitor, X7R Ceramic, 0.1µF, 50V, 0603 Non-Populated Components Table 2 Non-populated components Qty Reference Designator 3 REA2, RIMON, RZ2 4 R1, R2, R3, R4 14 EAO, EXT_VREF, PGD, IMON, SGND1, SGND2, SS/TRK, SYNCI, SYNCO, VDIFF, VDR, VIN, VSN, VSP 3 CEAIN1, CEAO, CTRK 1 CIN2 Description Resistor, 1%, 0.1W, 0603 Factory Use Only Thru-hole test points, Vector K24C Ceramic Cap, 50V, 0603 Bi-Polar Capacitor, Nichicon UPW2A330MPD or equivalent 2 JVIN, JVOUT 3 ENABLE, FT3, FT4 Johnson Jack, Tektronix 131503100 1 JGP 0.1in Header Jumper 1 C6 Capacitor, Ceramic, 1206 1 H1 Factory Test Header SM Test point, Keystone 5015 UG:305 Page 2 PGD 3 1 PCBNumber PCB0203 J4 J1 A2 A1 PGND CIN2 DNP VIN R3 DNP R1 DNP VDR Y2 Y1 4 6 R5 D1B PCBNumber U1 NC7WZ14 ADDR0 PG SENSE CIN1 VDR 1 1 5 VCC GND 2 R4 DNP ADDR1 R2 DNP VDR RSDA PGD ADDR1 ADDR0 VDR 3 4 1 TOP VIEW 2 RPGD TRK K7 PGND G1 VIN H1 VIN J1 VIN K1 VIN K2 VIN F2 Fiducials F1 RSYNCI CVDR VDR PGD TRK A1 ADDR1 A2 ADDR0 D1 E1 A3 SCL A4 SDA A5 EN C6 VIN_FILT SCL SDA ENABLE C5 B1 SYNCI C1 SYNCO RSCL C4 SYNCI SYNCO C3 DUAL LED ORIENTATION PGD ADDR1/FT1 ADDRO/FT2 D1A C2 4 SCL 3 SDA 2 EN 1 SGND SYNCI SYNCO C1 H1 Factory Test Header FP0404R1 L1 VIN_F RZ1 CCOMP CTRK LMAG MECH PIN PI3741 HCV1206-R 2 3 1 DNP RZ2 CEAO EAO RIN 1 4 VSUPPLY 2 3 K4 VS1 K5 VS1 SGND B14 TRK A6 COMP A8 UG:305 A13 VSN VSP A10 EAO VSP VSP VDIFF A11 A9 VSN VDIFF EAO EAIN A12 EAIN ISP ISN IMON K8 E14 IS+ D14 ISA14 IMON PGND G14 VOUT H14 VOUT J14 VOUT K13 VOUT K14 VOUT LGH A7 VS1 K10 VS2 K11 VS2 VS2 C7 C9 RDIFF2 RDIFF1 RIMON DNP C8 VSN C13 IMON ENABLE DAC DNP CEAIN1 C12 VSP J5 J6 RGP C14 Tie RSENSE SGND SGND EXT_VREF JGP Tie ADDR1 ENABLE SDA SCL VOUT Jumper J5 to connect IMON to VP for ATE Tesng. REA3 DNP VDIFF REA4 REA1 REA2 C11 IMON C10 JVOUT 13 14 15 16 17 18 19 20 21 22 23 24 P2 P4 SGND2 DNP SGND1 DNP 1 1 J3 J2 DAC EAO VDIFF VSN VSP SYNCO SYNCI PGD ADDR0 VDR ISN VIN_FILT VIN -VO SENSE 1 -VO SENSE +VO SENSE + VO SENSE 1 SAMTEC LPHS HORZ Edge Conn 1 2 3 4 5 6 7 8 9 10 11 12 P1 CN1 P3 VOUT SAMTEC LPHS-04-24 JVIN Figure 1 Evaluation board schematic COMP Page 3 Tie Figure 2 Evaluation board details Typical Connections Figure 4 illustrates the typical input supply and output load connections required to power the PI3741-x0 evaluation board. The test points on the right side of the board provide access to key nodes used to assess the board's performance. The jumper "JGP" provides an access point that allows the user to add a small signal in the feedback loop to make Gain/Phase measurements. The jumper J5 will connect the IMON output signal to the positive input of the general purpose amplifier, allowing this signal to be scaled. The J6 jumper will disable the converter when connected. JVIN is an unpopulated "Johnson Jack" location that may be used to measure input ripple voltage. Figure 3 Typical input and output connections UG:305 Page 4 Vicor PCB Edge Connector Description SAMTEC Reference Mechanical Drawings: based on EXTreme LPHPower™ Socket Assembly series, available from Samtec’s website PCB Dimensions: nn Recommended PCB layout for LPHS-XX-XX-X-VXX-XX PCB Layout.pdf nn Right-angle Socket: LPHS-XX-XX-X-RTX-XX-MKT.pdf nn Vertical Socket: LPHS-XX-XX-X-VXX-XX-MKT.pdf Figure 4 Edge connector details PAD Numbering Figure 5 Top (component) view Figure 6 Bottom view UG:305 Page 5 Schematic Symbol Figure 7 Schematic of edge connector PAD Definitions Table 3 PAD Definitions PAD Name Descirption P1,P2 PGND Power ground connection for the input supply and output load P3 VOUT Output voltage connection P4 VIN 1, 2, 6, 7, 8, 10 SGND Signal ground used as reference for I/O measurements 11, 12 PGND Power ground used as reference for input and output voltage measurements 3 ENABLE 4 SDA Factory use only 5 SCL Factory use only Input voltage connection Enable 9 ADR1 Factory use only 13 DAC External voltage node to adjust regulated output voltage (EXT_VREF) 14 EAO Error amplifier output 15 VDIFF Differential amplifier output 16 VSN Differential amplifier inverting input 17 VPN Differential amplifier non-inverting input 18 SYNCO Sync output pin 19 SYNCI Sync input pin 20 PGD Power good status pin 21 ADR0 Factory use only 22 VDR Internal generated 5.1V supply for gate drivers and internal logic 23 ISN Remote-sensed output voltage, after the IMON resistor 24 VIN Input supply voltage measured at SiP’s input UG:305 Page 6 PCB Design Files ODB++ evaluation board design files are available for download on the Vicor website. Table 4 Design files Product Deisgn File Format PI3741-0x-EVAL1 ODB++ Link to Download PI3741-0x Eval ODB++.zip UG:305 Page 7 Limitation of Warranties Information in this document is believed to be accurate and reliable. HOWEVER, THIS INFORMATION IS PROVIDED “AS IS” AND WITHOUT ANY WARRANTIES, EXPRESSED OR IMPLIED, AS TO THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION. VICOR SHALL HAVE NO LIABILITY FOR THE CONSEQUENCES OF USE OF SUCH INFORMATION. IN NO EVENT SHALL VICOR BE LIABLE FOR ANY INDIRECT, INCIDENTAL, PUNITIVE, SPECIAL OR CONSEQUENTIAL DAMAGES (INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR SAVINGS, BUSINESS INTERRUPTION, COSTS RELATED TO THE REMOVAL OR REPLACEMENT OF ANY PRODUCTS OR REWORK CHARGES). Vicor reserves the right to make changes to information published in this document, at any time and without notice. You should verify that this document and information is current. This document supersedes and replaces all prior versions of this publication. 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EXTreme LPHPower™ is a trademark of Samtec, Inc. All other trademarks, product names, logos and brands are property of their respective owners. 09/19 Rev 1.2 Page 8