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UG:014 vicorpower.com Applications Engineering: 800 927.9474 Page 1

Introduction

This evaluation board oers a convenient means to evaluate the performance of

Vicor’s 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 datasheet for performance and operating limits,

available for downloading at www.vicorpower.com.

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:

n Wear approved safety glasses when testing electronic product.

n Provide strain relief for wires and secure the board on the test bench to avoid

displacement.

n 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.

n 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.

VI Chip

VTM

Evaluation Board

USER GUIDE | UG:014

Written by: Ankur Patel

Applications Engineer

August 2013

Contents Page

Introduction 1

Contents 2

Features 2

Board Description 3

General Components 4

Test Points & Sockets 5

Schematic 7

Assembly Drawings 9

Bill of Materials 10

VTM Evaluation Boards 12

Standalone Operation 12

vs PRM-VTM

PRM-VTM Non-Isolated 12

Remote Sense

Paralleling 13

Push Pin Heat Sink 13

Installation

Part Ordering Information 13

Summary of content (14 pages)

PAGE 1
USER GUIDE | UG:014 VI Chip® VTM® Evaluation Board Written by: Ankur Patel Applications Engineer August 2013 Contents Page Introduction 1 Contents 2 Features 2 Board Description General Components Test Points & Sockets 3 4 5 Schematic 7 Assembly Drawings 9 Bill of Materials 10 VTM Evaluation Boards 12 Standalone Operation vs PRM-VTM 12 PRM-VTM Non-Isolated Remote Sense 12 Paralleling 13 Push Pin Heat Sink Installation 13 Introduction This evaluation board offers a convenient mean
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Contents All VTM® evaluation boards arrive with the following contents. (The user guide can be downloaded from the www.vicorpower.com.) n n n n n n 1 x VTM Evaluation board 1 x VI Chip push pin heat sink 2 x VI Chip push pins for heat sink installation 1 x Hardware kit 2 x Through hole mating connectors 1 x Through hole 22 µF input capacitor Features 1. Input filtering – ceramic capacitors and sockets for installation of throughhole aluminum electrolytic capacitor 2.
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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 V T M_-IN 8 6 4 2 9 7 5 3 V _T M V _PC V _IM 1 J11 Signal connector UG:014 -S +OUT +OUT -OUT 10 8 6 VC 4 -OUT 2 +S 9 7 +OUT +OUT 3 1 -OUT 5 -OUT VC J14 Power/signal connector vicorpower.com Applications Engineering: 800 927.
PAGE 4
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.
PAGE 5
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.
PAGE 6
Test Points and Sockets Description (Cont.) Reference Functional Designator Name Functional H15, H14 +S, –S 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. Name Sockets for +S and –S test points. TP30 IM IM test point provides the kelvin connection to IM pin.
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UG:014 vicorpower.com 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 Applications Engineering: 800 927.
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UG:014 vicorpower.com 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 Applications Engineering: 800 927.
PAGE 9
Assembly Drawings Figure 4a. TP18 J13 TP19 J10 H19 H18 R16 TP20 FID02 R17 H20 TP17 Assembly drawing – Top view: Full Chip VTM evaluation board 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 H26 H16 J16 TP16 TP11 H11 TP10 H10 TP12 TP13 FID01 R19 R14 H13 J15 TP22 H12 H24 H21 C10 TP21 H23 R13 Figure 4b.
PAGE 10
Bill of Materials Following table describes the common components of all VTM evaluation boards. Table 2. Reference Common components Designator Description C10 NOT APPLIED C11 CAP X7R .1uF 10% 100 V 0603 C12 - C19 Manufacturer Manufacturer Murata Manufacturing Part Number GRM188R72A104KA35D Design Specific – See table 3 C20 - C22 CAP X7R 2.2uF 10% 100 V 1210 .102 MAX HT TDK CORP OF AMERICA C3225X7R2A225KT5LOU CIN_PUT_IN_BOX CAP ALEL 22uF 20% 100 V RADIAL 8 X 11.
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Bill of Materials (Cont.) Following table describes the design specific components of all VTM® evaluation boards. Table 3. Reference Design specific components Designator Description Manufacturer Manufacturer Part Number Evaluation Board C12 - C19 CAP X5R 47uF 20% 6.3 V 1206 Murata Manufacturing GRM31CR60J476ME19K K = 1/12, 1/16, 1/24, 1/32 VTMs C12 - C19 CAP X5R 10uF 10% 25 V 1206 Murata Manufacturing GRM31CR61E106KA12L K = 1/3, 1/4, 1/5, 1/6, 1/8 VTMs C12 - C19 CAP X7R 1.
PAGE 12
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.
PAGE 13
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 startup. PRM® boards can also be connected in parallel to create high power PRM-VTM arrays.
PAGE 14
Part Ordering Information The VTM evaluation boards can be ordered from the Vicor website: www.vicorpower.com. To order the demo boards, substitute VTM with VTD in VTM part number. See http://www.vicorpower.com/cms/home/products/vi-chip/vichip_VTM_current_ multiplier for part number listing. The Power Behind Performance Rev 1.2 11/14 vicorpower.com Applications Engineering: 800 927.