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Micrel, Inc. 

MIC24055 Evaluation Board 

 

 

February 11, 2013 

Revision 1.0 

 

 

Bill of Materials (Continued) 

Item 

Part Number 

Manufacturer  Description 

Qty. 

R6, R14, R17 

CRCW060310K0FKEA 

Vishay Dale 

10.0k

Ω Resistor, Size 0603, 1% 

R7 

CRCW06034K99FKEA 

Vishay Dale 

4.99k

Ω Resistor, Size 0603, 1% 

R8 

CRCW06032K87FKEA 

Vishay Dale 

2.87k

Ω Resistor, Size 0603, 1% 

R9 

CRCW06032K006FKEA 

Vishay Dale 

2.00k

Ω Resistor, Size 0603, 1% 

R10 

CRCW06031K18FKEA 

Vishay Dale 

1.18k

Ω Resistor, Size 0603, 1% 

R11 

CRCW0603806RFKEA 

Vishay Dale 

806Ω Resistor, Size 0603, 1% 

R12 

CRCW0603475RFKEA 

Vishay Dale 

475Ω Resistor, Size 0603, 1% 

R13 

CRCW06030000FKEA 

Vishay Dale 

0

Ω Resistor, Size 0603, 5% 

R15 

CRCW060349R9FKEA 

Vishay Dale 

49.9

Ω Resistor, Size 0603, 1% 

R16, R18 

CRCW06031R21FKEA 

Vishay Dale 

1.21

Ω Resistor, Size 0603, 1% 

R20 

Open 

 

 

 

All Reference 
designators ending 
with “A” 

Open 

 

 

 

U1 

MIC24055YJL 

Micrel. Inc.

(

9

12A, High-Efficiency, Synchronous DC/DC Buck 
Regulator with Hyper Speed Control  

Note: 

9. 

Micrel, Inc.:

 

www.micrel.com

 

 

 

 

Summary of Contents for MIC24055

Page 1: ...icrel s web site at www micrel com Requirements The MIC24055 evaluation board requires only a single power supply with at least 10A current capability The MIC24055 has internal VDD LDO so no external...

Page 2: ...e changed by moving the jumper to a respective position to get an indicated voltage on the board If a desired voltage is not shown on the board it is easily modified by removing RBOTTOM and replacing...

Page 3: ...proximity to other heat emitting components 50 55 60 65 70 75 80 85 90 95 100 0 3 6 9 12 15 EFFICIENCY OUTPUT CURRENT A Efficiency VIN 5V vs Output Current 3 3V 2 5V 1 8V 1 5V 1 2V 1 0V 0 9V 0 8V VIN...

Page 4: ...Micrel Inc MIC24055 Evaluation Board February 11 2013 4 Revision 1 0 Evaluation Board Schematic Figure 1 Schematic of MIC24055 Evaluation Board J11 R13 and R15 are for testing purposes...

Page 5: ...C24055 Evaluation Board February 11 2013 5 Revision 1 0 Evaluation Board Schematic Continued Figure 2 Schematic of MIC24055 Evaluation Board Optimized for Smaller Footprint J11 R13 and R15 are for tes...

Page 6: ...88R61A225KE34D Murata C1608X5R1A225K TDK C12 06035C472KAZ2A AVX 4 7nF Ceramic Capacitor X7R Size 0603 50V 1 GRM188R71H472K Murata C1608X7R1H472K TDK C14 B41851F7227M EPCOS 4 220 F Aluminum Capacitor 3...

Page 7: ...tor Size 0603 1 1 R10 CRCW06031K18FKEA Vishay Dale 1 18k Resistor Size 0603 1 1 R11 CRCW0603806RFKEA Vishay Dale 806 Resistor Size 0603 1 1 R12 CRCW0603475RFKEA Vishay Dale 475 Resistor Size 0603 1 1...

Page 8: ...February 11 2013 8 Revision 1 0 PCB Layout Recommendations 1 Top Layer Mid Layer 1 Power Ground Plane Note 1 Refer to PCB Layout Guideline section for component placement and layout in MIC24055 datash...

Page 9: ...Micrel Inc MIC24055 Evaluation Board February 11 2013 9 Revision 1 0 PCB Layout Recommendations 1 Continued Mid Layer 2 Bottom Layer...

Page 10: ...soever and Micrel disclaims any express or implied warranty relating to the sale and or use of Micrel products including liability or warranties relating to fitness for a particular purpose merchantab...

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