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USER GUIDE | UG:306
PI3740-00-EVAL1, -EVAL2
®
Cool-Power
ZVS Switching Regulators
Buck-Boost Evaluation Board User Guide
Contents
Page
Current Sense Element in
Only One Current Sense
Element
Stability
10
12
Components for
1
1
2
3
3
3
4
4
4
5
Introduction
The PI3740-00 evaluation board comes in two versions, EVAL1 and EVAL2. EVAL1 should be used to
evaluate the PI3740 in constant voltage or standard constant current applications where V
8V. EVAL2 is designed for specialized constant current applications using high-side current sense where
V
is below 8V. These boards have been designed to showcase various constant voltage and constant
OUT
current applications and can be configured with a few selectable jumpers. This guide will walk the user
through the various options.
8
The PI3740-00-LGIZ is a high efficiency, wide input range DC-DC ZVS Buck-Boost regulator with
integrated controller, power switches, and support components all within a high density
8
0.4" x 0.55" System-in-Package (SiP). The evaluation board measures 2.5"x2.25" and contains all
the components necessary for a variety of applications. Not all components will be needed for
8
all applications.
9
Part Ordering Information
The customer evaluation boards can be ordered following the link to
Power products
listing.
Vicors step down regulators Cool
UG:306
is above
OUT
Page 1
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Table of Contents
Related Manuals for VICOR PI3740-00-EVAL1
Summary of Contents for VICOR PI3740-00-EVAL1
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Page 1: Table Of Contents
(EVAL1, EVAL2) Constant Current Float Voltage Adjustment Adjusting the Charging Current Constant Current Configuration #1: (PI3740-00-EVAL1 Board) 5 Constant Current Configuration #2: (PI3740-00-EVAL1 Board) 6 Introduction Constant Current Configuration #3: The PI3740-00 evaluation board comes in two versions, EVAL1 and EVAL2. EVAL1 should be used to... -
Page 2: Box Contents
Kelvin Johnson-Jack for accurate voltage measurements of power nodes. Box Contents The evaluation board ships with the following contents: 1 x PI3740-00-EVAL1 or PI3740-00-EVAL2 customer evaluation board 8 x jumpers UG:306 Page 2... -
Page 3: Features
Features Input and output lugs for source and load connections. Location to place through-hole input aluminum-electrolytic capacitor. (CIN3) Input source filter (L1, L200, RIN) Oscilloscope probe jack for accurate, high frequency output (JV ) and input (JV ) voltage measurements. Signal pins test points and wire connectors. -
Page 4: Constant Voltage Operation (Eval1)
Constant Voltage Operation (EVAL1) For constant voltage operation install JLGH, JPG, JISP, JISN as shown in Figure 1. The regulated output voltage can be adjusted by changing REA1 per the following equation. = (1.5887*REA1) + 1.7 where REA1 is in kΩ. With the present values, the output FLOAT voltage is about 24V. -
Page 5: Adjusting The Charging Current
Constant Current Configuration #1: (PI3740-00-EVAL1 Board) Low Side Current Sense Using PI3740 Internal Amplifier This configuration senses the current through R106 and uses the internal general purpose amplifier of the PI3740 to regulate the current. The jumpers need to be installed as shown. This configuration can be used for super-cap charging as well as battery charging. -
Page 6: Constant Current Configuration #2: (Pi3740-00-Eval1 Board)
Constant Current Configuration #2: (PI3740-00-EVAL1 Board) High Side Current Sense Using R SENSE For customers who prefer high-side current sense, this configuration senses the current through R SENSE and uses the internal Imon amplifier and the LGH pin of the PI3740. The LGH pin is the inverting input to an amplifier which has a 0.1V reference. -
Page 7: Configuration #3: (Pi3740-00-Eval1 Board)
Constant Current Configuration #3: (PI3740-00-EVAL1 Board) Low Side Current Sense and LGH Current is sensed through R106 and, through a compensation network, fed into the LGH pin. This is a low-side current sense configuration which requires only 4 components including the current sense resistor. -
Page 8: (Pi3740-00-Eval2 Board)
IMON, on the board which does not have the current-sense resistor, must be opened. (Remove J200). Stability The both evaluation boards are designed to be stable in a wide variety of applications. If instability is seen in your application, contact Vicor’s application support for assistance. UG:306 Page 8... -
Page 9: Test Points
Test Points Table 1 Reference Designator/ Description Test Point Descriptions Functional Name VIN_F Input voltage test point close to VIN of the PI3740. +VOUT SENSE1 Output voltage test points. –VOUT SENSE 1 A 5.1V auxiliary supply with max loading of 2mA. If used this pin must have a se- ries resistance such as R103 = 1kΩ... -
Page 10: Schematics
Schematics Figure 7 PI3740 Evaluation Board Schematic Page 1 COMP UG:306 Page 10... - Page 11 Schematics (Cont.) Figure 8 PI3740 Evaluation Board Schematic Page 2 UG:306 Page 11...
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Page 12: Bill Of Materials
Bill of Materials Table 1 Reference Manufacturer Description Manufacturer Bill of Materials Designator Part Number Populated Components C1, C2, C3, C4, C5, C7, C8, C9, C10, C11, C12, C13, C14, C203, C204, C205, C206, CIN1, CIN2, CIN4, CIN5, CIN6, Capacitor, X5R, Ceramic, 4.7µF, MURATA GRM32ER71K475KE14L CIN7, CIN8,... - Page 13 Resistor, 0.15, 1%, 0.25W, 1206 ROHM MCR18EZHFLR150 4 Position, I C Header MOLEX 22-23-2041 PI3740 Wide Input Range BB 10X14 SiP VICOR PI3740-00 JGP, J6, J301, J302, J303, JTRK, JVSN, Connector Header 2 Position 0.1" Pitch 961102-6404-AR JVSP, JSHUNT, JLGH R204 Resistor, 47K, 5%, 0.1W, 0603...
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Page 14: Additional Or Changed
Bill of Materials (Cont.) Additional or Changed Components for PI3740-00-EVAL2 Board Table 2 Reference Manufacturer Description Manufacturer Bill of Materials Designator Part Number for Additional or Changed Capacitor, X7R Ceramic, 0.1µF, 50V, CGA3E3X7S2A104K- Components C301 0603 080AB RSENSE (Value Resistor, 0.020, 1%, 1W PANASONIC ERJ-M1WSF20MU Changed) - Page 15 ANY AND ALL LIABILITY FOR INCLUSION AND/OR USE OF VICOR PRODUCTS IN SUCH EQUIPMENT OR APPLICATIONS AND THEREFORE SUCH INCLUSION AND/OR USE IS AT YOUR OWN RISK. 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.
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