VTD48EH120T010B00

USER GUIDE | UG:014 VI Chip® VTM™ Evaluation Board Contents Page Introduction 1 Features 2 Board Description 3 General Components 4 Test Points and Sockets Description 5 Schematic 6 Assembly Drawings 8 Bill of Materials 9 PRM™ & VTM™ Evaluation Boards 10 Stand-Alone Operation vs. PRM-VTM Operation 10 PRM-VTM Non-Isolated Remote Sense 10 Paralleling 11 Push-Pin Heat Sink Installation 11 Introduction This evaluation board offers a convenient means to evaluate the performance of the Vicor VTM current multiplier. All evaluation boards include sockets for easy plug‑and‑play insertion and removal of through‑hole components and wires. The board provides lugs for power connections, connectors for easy PRM‑VTM evaluation board interconnects and Kelvin voltage‑measurement test points of all pins of the VTM. Please refer to the appropriate VTM data sheet for performance and operating limits, available for downloading at www.vicorpower.com. Using the VTM Evaluation Board for Reverse Operation 11 Part Ordering Information 11 IMPORTANT NOTICE: Please read this document before setting up a VTM evaluation board. This user guide is not comprehensive and the operator should not substitute it for common sense and good practice. The following procedures should be followed during operation: nn Wear approved safety glasses when testing electronic product. nn Provide strain relief for wires and secure the board on the test bench to avoid displacement. nn Remove the power and use caution when connecting and disconnecting all test probes and interface lines to avoid unintentional short circuits and contact with hot surfaces. nn Never attempt to disconnect the evaluation board from a PRM™ evaluation board while power is applied. This system is not designed to demonstrate the hot-plug capability. UG:014 Page 1 Contents All VTM™ evaluation boards arrive with the following contents. (The user guide can be downloaded from www.vicorpower.com.) nn 1 x VTM Evaluation board nn 1 x VI Chip® push-pin heat sink nn 2 x VI Chip push pins for heat-sink installation nn 1 x Hardware kit nn 2 x Through‑hole mating connectors nn 1 x Through‑hole 22µF input capacitor Features 1. Input filtering: ceramic capacitors and sockets for installation of through‑hole aluminum electrolytic capacitor 2. Output filtering: ceramic capacitors 3. Oscilloscope probe jack for output voltage signal measurement 4. Kelvin test points for measurement of input voltage, output voltage and all signal pins of the VTM 5. Sockets for each test point for easy installation of through-hole components and solid wires to facilitate wiring to external circuitry and test equipment 6. Input and output lugs for power supply and load connections 7. Input power and signal connectors for testing with PRM™ module 8. Provisions for non-isolated remote-sense operation with PRM evaluation board a. Provision to inject network analyzer signals b. 2512 resistor footprint for installation of zero‑ohm resistor to break the VTM isolation for non‑isolated remote‑sense operation c. Sense pins with local-sense resistors to +OUT and –OUT UG:014 Page 2 Board Description The following section provides a detailed description of the evaluation board components, test points and sockets. Figure 1 Board description Figure 2 Power/signal connectors pinout (front view) 10 VTM_–IN 8 6 4 2 9 7 5 3 V_TM V_PC V_IM 1 –S +OUT +OUT –OUT 10 8 6 +S 9 7 5 3 1 +OUT +OUT –OUT VC –OUT J11 Signal Connector VC –OUT 4 2 J14 Power/Signal Connector UG:014 Page 3 General Components 1. VTM™ (PS10). 2. Input lugs (+IN and –IN): Sized for #10 hardware. Use these for making connection to the input source. This board does not contain reverse‑polarity protection. Check for proper polarity before applying power. 3. Input filtering: Input capacitor (CIN) and filtering (ceramic capacitors) allows for stable operation with most input sources. Sockets can be used for easy installation of aluminum‑electrolytic input capacitor. 4. Power/Signal connector (J14): Used to receive the power (+OUT/–OUT) and VC from upstream PRM™ board when used. 5. Signal connector (J11): Used to transfer VTM PC, IM, TM, –IN and output sense signals between the VTM and PRM boards. TM pin of the VTM provides feedback to the VT pin of the PRM in adaptive‑loop operation of PRM and VTM. +S and –S signals provide voltage sensing to the PRM remote‑sense circuitry for non‑isolated remote‑sense operation. 6. Output lugs (+OUT, –OUT): Sized for #10 hardware. Use these lugs to connect the output directly to the load. 7. Output filtering (ceramic capacitors): Helps to minimize switching ripple of the output voltage. 8. Output oscilloscope probe jack (J12): Used for making accurate scope measurements of the output voltage (i.e., ripple). Remove scope grounding lead and insert probe directly into jack ensuring a good connection between the jack and the probe ground barrel. Do not attempt to install while power is applied. May not be compatible with all scope probes. 9. TM filtering: Filters the TM signal noise. Corner frequency of the filter is set well below the VTM switching frequency. 10. Sense pins and local-sense resistors: Used to sense the output votage of the VTM for non‑isolated remote‑sense operation. Local sense resistors can be bypassed by connecting twisted pair from the sense test points directly to the load. 11. VTM isolation boundary: Zero‑ohm shunt can be soldered or use sockets to break the isolation for non‑isolated remote‑sense operation of VTM board and PRM board. 12. Heat-sink push pins: Secure the heat sink to the board using these pins. Use of a fan across the heat sink is highly recommended for proper cooling. 13. Mating connectors: Connect the PRM and VTM with the connecters to share power and signal connection. UG:014 Page 4 Test Points and Sockets Description Each test‑point socket accepts 0.015 – 0.025 inch diameter leads of solid wires and through‑hole components for use with external circuitry and test equipment. All test points are aligned on the board’s edge for easy access, measurement and external circuitry connections. Each point is labeled and is accompanied by an additional adjacent socket. Table 1 Test points and sockets description Reference Designator Functional Name TP20 TP21 +IN –IN Input voltage test points provide Kelvin connection to input pins of the VTM™. Use these test points for measuring the input voltage of the VTM to avoid error due to interconnect losses. H20 H21 +IN –IN Sockets for +IN and –IN test points. Kelvin connected to the VTM input pins. TP17 TP22 +OUT –OUT Output voltage test points provide Kelvin connection to output pins of the VTM. Use these test points for measuring the output voltage of the VTM to avoid error due to interconnect losses. H17 H22 +OUT –OUT Sockets for +OUT and –OUT test points. Kelvin connected to the VTM output pins. TP12 VC VC test point provides Kelvin connection to VC pin of the VTM. Can be used to apply and measure the VC signal with reference to –IN signal. VC is used to enable the VTM. Apply 14V to VC to enable the VTM, when not using PRM. H12 VC Socket for VC test point. Kelvin connected to VC pin of the VTM. Aligned with –IN socket for placing through hole resistor from VC to –IN. TP10 PC PC test point provides Kelvin connection to PC pin of the VTM. Can be used to measure the PC signal with reference to –IN signal. PC can be used to disable the VTM in the presence of input power. Connecting PC to –IN will disable the VTM. H10 PC Socket for PC test point. Kelvin connected to PC pin of the VTM. TP11 TM TM test point provides Kelvin connection to TM pin of the VTM. Can be used to measure and monitor the TM signal with reference to –IN signal. H11 TM Socket for TM test point. Kelvin connected to TM signal of the VTM TP16 FILTERED TM Provides the low noise measurement of TM signal. Output of the TM RC filter can be measured using this testpoint with reference to –IN. H15 FILTERED TM Socket for TP16 test point. TP13 –IN –IN test point provides Kelvin connection to –IN pin of the VTM. All signals on input side of the VTM are measured with reference to –IN signal of the VTM. H13 –IN Socket for –IN test point. TP15 TP14 +S –S Output sense test points provide connection to the output pins of VTM through local-sense resistors. Routed to connector J11 for use in differential non‑isolated remote-sense circuitry for remote‑sense operation of VTM and PRM™. H15 H14 +S –S Sockets for +S and –S test points. TP18 TP19 AC SIG INJ Can be used to inject the isolated signal of network analyzer for bode plot measurement to measure the stability in remote‑sense operation using VTM and PRM H18 H19 AC SIG INJ Sockets for AC +/– test points. TP30 IM IM test point provides the Kelvin connection to IM pin. Can be used to measure the IM signal of the half VTM. IM can be used to monitor the output current of the VTM. Available on half-VTM boards only. H27 IM Socket for IM test point. Functional Description UG:014 Page 5  UG:014 J15 J13 TM PC -IN TM_F TP16 TP10 0603 R14 -IN 10 8 6 4 2 10 8 6 4 2 KELVIN -IN C11 0603 J14 VC 9 7 5 3 1 J11 9 7 5 3 1 -IN H16 KELVIN -IN TP12 R16 1206 R17 1206 FID02 FIDUCIAL FIDUCIAL C20 1210 H19 TP19 C10 0603 FID01 H24 CIN H23 H18 TP18 -IN TM H13 R12 1206 VC H12 TP13 R11 0603 TM H11 TP11 R10 0603 PC H10 C21 1210 1206 R18 H21 C22 1210 H20 VC TM PC TP21 TP29 TP27 TP20 TP26 TP25 TP24 PRIMARY -IN +IN VC TM PC +OUT -OUT NO GND H25 2512 R19 -OUT +OUT PS10 HS10 H26 SECONDARY VTM 1206 R15 1206 R13 H15 +SENSE TP15 VTM_OFF_BD_VIBRICK ISOLA TION BOUNDRY H14 -SENSE TP14 KELVIN WITH DIFFERENTIA L ROUTING H17 H22 TP28 TP22 TP23 TP17 -OUT 1206 C12 +OUT 1206 C13 1206 C14 1206 C15 1206 C16 1206 C17 1206 C18 1206 C19 J12 KELVIN J16 J10 Schematic Figure 3a Full-chip VTM™ evaluation board Page 6  UG:014 J15 J13 TM PC IM -IN TM_F TP16 TP30 TP10 0603 R14 10 8 6 4 2 10 8 6 4 2 1206 R17 1206 R16 TM -IN H13 FID02 FIDUCIAL FIDUCIAL C20 1210 H19 TP19 TP13 R12 1206 VC H12 FID01 H24 CIN H23 H18 TP18 -IN KELVIN -IN TP12 R11 0603 TM H11 TP11 R10 0603 PC H10 KELVIN -IN C11 0603 J14 VC 9 7 5 3 1 J11 9 7 5 3 1 -IN H16 R20 0603 IM H27 C21 1210 1206 R18 C10 0603 H21 C22 1210 H20 IM VC TM PC TP21 TP29 TP27 TP20 TP31 TP26 TP25 TP24 H14 1206 R15 1206 R13 H15 +SENSE TP15 +OUT -OUT 2512 R19 -OUT +OUT HS10 H26 SECONDARY ISOLA TION BOUNDRY NO GND H25 PS10 PRIMARY -IN +IN IM VC TM PC HALF VTM -SENSE TP14 KELVIN WITH DIFFERENTIA L ROUTING H17 H22 TP28 TP22 TP23 TP17 -OUT 1206 C12 +OUT C13 1206 C14 1206 C15 1206 1206 C16 C17 1206 C18 1206 C19 1206 J12 KELVIN J16 J10 Schematic (Cont.) Figure 3b Half-chip VTM™ evaluation board Page 7 Assembly Drawings Figure 4a Top view: full-chip VTM™ evaluation board J13 TP19 J10 H19 H18 R16 TP20 FID02 R17 H20 TP17 TP18 H17 HS10 J11 R15 R18 R11 C22 PS10 C21 C20 J14 C19 C18 C17 C16 C15 C14 C13 C12 R10 H15 TP15 J12 H14 TP14 PF15 H22 H25 C11 R12 H16 J16 TP16 TP11 H11 TP10 H10 TP12 TP13 FID01 H26 R19 R14 H13 J15 TP22 H12 H24 H21 C10 TP21 H23 R13 Figure 4b Top view: half-chip VTM evaluation board J13 TP19 J10 H19 H18 R16 TP20 FID02 R17 H20 TP17 TP18 H17 HS10 J11 R15 R18 R20 PS10 C22 R11 C21 C20 J14 C19 C18 C17 C16 C15 C14 C13 C12 R10 H15 TP15 J12 H14 TP14 PF15 R12 H27 H16 H11 H10 H22 J16 TP30 TP16 TP11 TP10 TP12 TP13 PF18 FID01 H26 C11 H12 R19 R14 H13 J15 H25 TP22 H24 H21 C10 TP21 H23 R13 UG:014 Page 8 Bill of Materials Following table describes the common components of all VTM™ evaluation boards. Table 2 Common components Reference Designator Description C10 Not applied C11 CAP X7R 0.1µF 10% 100V 0603 C12 – C19 C20 – C22 CIN_PUT_IN_BOX H10 – H27 HEADER_IN_BOX Manufacturer Manufacturer Part Number Murata Manufacturing GRM188R72A104KA35D Design specific – see Table 3 TDK Corp. Of America C3225X7R2A225KT5LOU CAP ALEL 22µF 20% 100V RADIAL 8 x 11.5 Panasonic EEUFC2A220 PIN RECPT 0.015/0.025 DIA 0667 SER TH Mill-Max 0667-0-57-15-30-27-1 Sullins PEC05DABN Global Connector Technology BG225-10-A-N-A Tektronix 131-5031-00 CAP X7R 2.2µF 10% 100V 1210 0.102 MAX HT CONN 10POS HEADER STR M-M 3A/0.100 J11 J14 CONN 10 PINS 2.54MM PITCH DUAL ROW SM HO J12 JACK VERTICAL MECH THRU HOLE PCB Design specific – see Table 3 PS10 Design specific – see Table 3 R10 Not applied R11 Not applied R12 Not applied R13, R15 RES 10Ω 1/4W 1% 1206 KOA Speer Electronics RK73H2BTTD10R0F R14 RES 1kΩ 1/10W 1% 0603 KOA Speer Electronics RK73H1JTTD1001F R16, R17 RES 20Ω 1/4W 1% 1206 KOA Speer Electronics RK73H2BTTD20R0F Vishay WSL1206R0100FEA Keystone Electronics 5017 R18 RES 10mΩ 1/4W 1% 1206 R19 Not applied TP10 – TP22, TP30 TEST POINT, SURFACE MOUNT Following table describes the design-specific components of all VTM evaluation boards. Table 3 Design-specific components Reference Designator Description Manufacturer Manufacturer Part Number C12 – C19 CAP X5R 47µF 20% 6.3V 1206 Murata Manufacturing GRM31CR60J476ME19K K = 1/12, 1/16, 1/24, 1/32 VTMs C12 – C19 CAP X5R 10µF 10% 25V 1206 Murata Manufacturing GRM31CR61E106KA12L K = 1/3, 1/4, 1/5, 1/6, 1/8 VTMs C12 – C19 CAP X7R 1.0µF 10% 100V 1206 Murata Manufacturing GRM31CR72A105KA01L K = 1, 2/3, 1/2, VTMs PCB SNGLTD PCB FULL CHIP VTM CB Vicor 39261 Full-chip VTM boards PCB SNGLTD PCB HALF CHIP VTM CB Vicor 39262 Half-chip VTM boards PS10 Full-chip / half-chip VTM, Part Number refer to data sheet UG:014 Evaluation Board Page 9 PRM™ & VTM™ Evaluation Boards The VTM evaluation board has been designed for compatibility with all PRM evaluation boards to accommodate any PRM-VTM combination. The VTM evaluation board contains dual connectors designed to mate with J10 and J13 on PRM board. An additional signal connector shares VTM signal pins along with TM, S+ and S– to the PRM board. When connected to a PRM evaluation board the TM signal provides feedback to the VT pin of the PRM enabling temperature compensation in adaptive‑loop configuration. Figure 5 PRM evaluation board connection to VTM evaluation board Stand-Alone Operation vs. PRM-VTM Operation In standalone VTM operation, the VTM cannot self-start with only an input voltage applied. A voltage of 14V must be applied to its VC pin or test point for it to become active. Ensure that the applied VC slew rate is within the specified limits of the device. The VC voltage may be removed once the VTM has started and the input voltage has reached 26V or VC can be applied continuously to allow operation down below 26V input voltage. When connected together, the PRM provides power and the VC pulse via the J14 connector to the VTM. A 22µF, 100V electrolytic input capacitor is provided with the board and is recommended in stand-alone VTM operation. Refer to the VI Chip® PRM evaluation board UG:013 for more information on various modes of PRM+VTM operation. PRM-VTM Non-Isolated Remote Sense To demonstrate non-isolated remote sense with a PRM evaluation board, the VTM isolation must be broken by tying VTM –IN to –OUT. This can be done using sockets on both side of R19 resistor footprint or by soldering a 2512 zero-ohm resistor at the R19 location. Output sense test points are routed to connector J11 and provide feedback to the PRM remote‑sense circuitry. By default, the +S and –S pins are connected to the output pins of VTM through local‑sense resistors. To demonstrate sensing at a remote point-of-load, the local‑sense resistors can be bypassed by connecting the +S and –S test points to the desired sense location. Use a twisted pair to avoid noise pickup. It is recommended to use a network analyzer to measure the closed-loop frequency response when adjusting compensation. The VTM boards provide test points which can be used to inject the network analyzer AC signal and measure the closed-loop response. For PRM-VTM remote‑sense mode, test points are provided on the VTM board in series with the +S connections (Labeled “RS SIG INJ +/–“) and should be used. UG:014 Page 10 Paralleling The paralleling and current sharing capability of the devices can be demonstrated by stacking multiple evaluation boards and interconnecting the inputs and outputs with standoffs of sufficient current rating to create a parallel array. When paralleling VTMs, in standalone VTM™ operation, VC pins should be connected together to enable the synchronized start up. PRM™ boards can also be connected in parallel to create high‑power PRM-VTM arrays. PRM input, outputs and interconnect signals need to be connected in parallel using same-size standoffs. Each VTM requires a VC signal from a PRM in order to start and it is recommended to connect one PRM VC to one VTM VC using the connector J13 on PRM board and J14 on VTM board when possible. If needed a single PRM VC can be used to drive up to two VTMs (will require additional off‑board connections). Push-Pin Heat Sink Installation Each VTM demonstration board comes with its own heat sink and push pins for installation. Before testing, it is highly recommended that the heat sink be installed in the appropriate location for each board. When installing the push‑pin heat sink, use caution not to exceed the maximum compression on the device listed in the data sheet. For most lab environments a fan blowing across the evaluation board is recommended. Using the VTM Evaluation Board for Reverse Operation VTMs are capable of bidirectional power transfer between the primary and secondary power terminals. Certain VTMs such as VTM48EF040T050B0R and VTM48EF120T025A0R are qualified for continuous operation in reverse (power transfer from secondary to primary). Reversible VTMs are usually designated with an R as the last character of the part number, however, refer to the data sheet to determine if a particular VTM is qualified for continuous reverse operation. Reverse operation with a PRM-VTM configuration is beyond the scope of this document. In stand‑alone operation, the applied VC voltage must be referenced to –PRI (–IN). VC can be applied before or after the secondary (source) voltage. Applying VC after the secondary voltage will result in a non-negligible amount secondary inrush current as described in the data sheet. Refer to the data sheet for the peak secondary inrush value and ensure the source is rated appropriately. Fusing for the evaluation board is located on the primary side. If fusing on the secondary (source) side is required, then it should be added externally based on the device ratings. In order to test a qualified VTM in the reverse direction, follow the the procedure for VTM stand‑alone operation and make the following changes: 1. Connect the voltage source to the secondary (output) lugs. 2. Connect the load to the primary (input) lugs. Ensure the applied source voltage has the correct polarity and is within the secondary voltage ratings of the VTM. It may be necessary to install an input capacitor across the secondary terminals to decouple the input source. Part Ordering Information The VTM evaluation boards can be ordered from the Vicor website. To order the demo boards, substitute VTM with VTD in VTM part number. See http://www.vicorpower.com/dc-dc-converters-board-mount/vtm for part number listing. UG:014 Page 11 Limitation of Warranties Information in this document is believed to be accurate and reliable. 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Terms of Sale The purchase and sale of Vicor products is subject to the Vicor Corporation Terms and Conditions of Sale which are available at: (http://www.vicorpower.com/termsconditionswarranty) Export Control This document as well as the item(s) described herein may be subject to export control regulations. Export may require a prior authorization from U.S. export authorities. Contact Us: http://www.vicorpower.com/contact-us Vicor Corporation 25 Frontage Road Andover, MA, USA 01810 Tel: 800-735-6200 Fax: 978-475-6715 www.vicorpower.com email Customer Service: custserv@vicorpower.com Technical Support: apps@vicorpower.com ©2018 Vicor Corporation. All rights reserved. The Vicor name is a registered trademark of Vicor Corporation. All other trademarks, product names, logos and brands are property of their respective owners. 10/18 Rev 1.3 Page 12