ISL8225MEVAL2Z Intersil, ISL8225MEVAL2Z Datasheet

ISL8225MEVAL2Z

Manufacturer Part Number

ISL8225MEVAL2Z

Description

Power Management IC Development Tools 90A,1.2Vout Eval Brd w/ 3 ISL8225M Modul.

Manufacturer

Intersil

Type

DC/DC Converters, Regulators & Controllersr

Datasheet

1.ISL8225MEVAL2Z.pdf (12 pages)

Specifications of ISL8225MEVAL2Z

Rohs

yes

Product

Evaluation Boards

Tool Is For Evaluation Of

ISL8225M

Input Voltage

4.5 V to 20 V

Output Voltage

1.2 V

Output Current

90 A

For Use With

ISL8225M

Current page: 1 of 12
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ISL8225MEVAL2Z 6-Phase, 90A Evaluation Board Setup

Procedure

The ISL8225M is a complete, dual step-down switching mode

DC/DC module. The dual outputs can easily be paralleled for

single-output, high-current use. It is easy to apply this

high-power, current-sharing DC/DC power module to

power-hungry datacom, telecom, and FPGA applications. All

that is needed in order to have a complete, dual 15A design

ready for use are the ISL8225M, a few passive components,

and V

The ease of use virtually eliminates design and manufacturing

risks while dramatically improving time to market. Need more

output current? Simply parallel up to six ISL8225M modules to

scale up to an 180A solution.

The ISL8225M has a thermally enhanced, compact QFN

package that operates at full load and over-temperature

without requiring forced-air cooling. Easy access to all pins,

with few external components, reduces PCB design to a

component layer and a simple ground layer.

The ISL8225MEVAL2Z evaluation board allows for a single

6-phase paralleled output, which delivers high current up to

90A. The input voltage is 4.5V to 20V and the default output

voltage on this board is set at 1.2V. The current level for this

board is 90A with no extra cooling required.

Related Resources

December 3, 2012

AN1789.0

OUT

setting resistors.

See how-to

video at

intersil.com/

evid02

4.5V TO 20V

1-888-INTERSIL or 1-888-468-3774

FIGURE 1. ISL8225MEVAL2Z BOARD IMAGE

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

Recommended Equipment

• 0V to 20V power supply with at least 10A source current

• Electronic load capable of sinking current up to 90A

• Digital multimeters (DMMs)

• 100MHz quad-trace oscilloscope

Quick Start

The inputs are J3 (VIN) and J4 (GND). The outputs are J1 and

J5 (VOUT), J2 and J6 (GND) and J6 (VOUT2). Please refer to

Figure 1. This 90A evaluation board can be easily modified to

30A (one module) or 60A (two modules) operation.

1. Connect a power supply capable of sourcing at least 10A to

2. Ensure the jumpers for EN2 and EN3 are in the “ON”

3. The ISL8225MEVAL2Z is manufactured with a V

capability

(multiple electronic current loads can be used in parallel to

sink more current)

the input (VIN J3 & GND J4) of the ISL8225MEVAL2Z

evaluation board, with a voltage between 4.5V to 20V.

Connect an electronic load or the device to be powered to

the output (VOUT (J1, J5) & GND (J2, J6)) of the board. All

connections, especially the low voltage, high current V

lines, should be able to carry the desired load current and

should be made as short as possible. Duplicated tab

connections on VOUT (J1, J5) and GND (J2, J6) to carry large

current.

position and EN is open. Turn on the power supply. If the

board is working properly, the green LED will illuminate; if

not, the red LED will illuminate (recheck the wire/jumper

connections in this case). Measure the output voltage, V

which should be at 1.2V.

value of 1.2V; if different output voltages are desired, board

resistors can be exchanged to provide the desired V

refer to Table 1 on page 2 for R2/R64 resistor values, which

can be used to produce different output voltages.

All other trademarks mentioned are the property of their respective owners.

Application Note 1789

NOTE:

1. Multiple loads can be paralleled to

reach 90A (i.e. Two 45A loads

paralleled together).

(0A~90A)

NOTE 1

LOAD

OUT

. Please

default

OUT

Related parts for ISL8225MEVAL2Z

ISL8225MEVAL2Z Summary of contents

Page 1

... Figure 1. This 90A evaluation board can be easily modified to 30A (one module) or 60A (two modules) operation. 1. Connect a power supply capable of sourcing at least 10A to the input (VIN J3 & GND J4) of the ISL8225MEVAL2Z evaluation board, with a voltage between 4.5V to 20V. Connect an electronic load or the device to be powered to the output (VOUT (J1, J5) & ...

Page 2

For 12V V and V more than 1.5V, the switching frequency IN OUT will need to be adjusted, as shown in Table 1. The resistor R can be adjusted for the desired frequency. No frequency adjustments are necessary for V ...

Page 3

... Aavid Thermalloy, part number 375424B00034G, www.aavid.com). Remote Sensing The ISL8225MEVAL2Z board allows the user to apply the remote sensing function to loads in order to achieve good output regulation accuracy. To make use of this function, remove resistors R7 and R8 and connect the kelvin sensing lines through the jumper JP4 (RS) to the point of load ...

Page 4

... N/C PGOOD VSEN1+ 21 VSEN1- PGND VIN1 VCC1 IN E OUT COMP R13 S1 DNP S3 CLKOUT1 OUT FIGURE 2. ISL8225MEVAL2Z BOARD SCHEMATIC R22 IN 1.2V @ 90A VOUT 0 VMON TP1 OUT C8 R64 R82 VOUT 1000PF IN E 499 499 S1 S1 OUT R62 COMP R59 0 0 R61 R60 ...

Page 5

... N/C PGOOD OUT VSEN1+ 21 VSEN1- PGND VIN1 VCC2 OUT COMP2 S2 R27 VMON1 CLKOUT2 OUT S2 S2 FIGURE 3. ISL8225MEVAL2Z BOARD SCHEMATIC R23 R35 VMON VMON1 OUT S2 R45 COMP OUT 0 COMP2 OUT R67 0 R71 0 R68 0 R72 0 R28B VCC2 IN 0 R65 ...

Page 6

... ISL8225MIRZ 24 PGOOD N/C PGOOD OUT VSEN1+ 21 VSEN1- PGND VIN1 VCC3 IN COMP3 E OUT S3 VMON2 IN S3 CLKOUT3 OUT FIGURE 4. ISL8225MEVAL2Z BOARD SCHEMATIC R33 R36 VMON1 VMON2 OUT R46 COMP2 S3 IN COMP3 0 OUT R73 0 R77 0 R74 0 R78 0 VCC3 R44B IN 0 R75 E ...

Page 7

Layout FIGURE 5. TOP ASSEMBLY FIGURE 7. TOP LAYER COMPONENT SIDE 7 Application Note 1789 OFF ON FIGURE 6. TOP SILK SCREEN FIGURE 8. LAYER 2 December 3, 2012 AN1789.0 ...

Page 8

Layout (Continued) FIGURE 9. LAYER 3 FIGURE 11. LAYER 5 8 Application Note 1789 FIGURE 12. BOTTOM LAYER SOLDER SIDE FIGURE 10. LAYER 4 AN1789.0 December 3, 2012 ...

Page 9

Layout (Continued) FIGURE 13. BOTTOM SILK SCREEN 9 Application Note 1789 FIGURE 14. BOTTOM SILK SCREEN MIRRORED FIGURE 15. BOTTOM ASSEMBLY AN1789.0 December 3, 2012 ...

Page 10

Bill of Materials PART NUMBER REF DES QTY. VALUE 10TPB330M C04, C08, C016, 5 330µF C024, C08A 131-4353-00 TP1 1 2N7002-7 5002 TP2-TP11 10 ECA-1VM471 CINA, CINB 2 470µF GRM21BR71C475KA73L C1-C3 3 GRM32ER70A476K C0, C02, C05, 7 C010, ...

Page 11

... RES_0603 1% 1/16W 603 RES_0603 499Ω 1% 1/16W 603 RES_0603 0Ω 5% 1/2W 2010 RES_2010 QFN QFN26_670X670_ISL8225M Intersil THOLE JUMPER-3 THOLE JUMPER-1 CONN KPA8CTP 3kΩ 1% 1/10W 603 RES_0603 SMD LED_3X2_5MM MANUFACTURER DESCRIPTION Generic Thick film chip resistor Generic Thick film chip resistor ...

Page 12

... ISL8225MEVAL2Z Efficiency Curves Efficiency Curves with Zero-ohm Resistance on the Output 95 2.5V OUT 3.3V OUT 85 1.5V OUT 1.2V OUT 75 1V OUT LOAD CURRENT (A) FIGURE 16. EFFICIENCY CURVES FOR 12V INPUT Efficiency Curves by Replacing Zero-ohm Resistance with Thick Copper Strap 95 2.5V OUT 3.3V OUT 85 1.5V OUT 1.2V OUT ...

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