Related Manuals for Renesas ISL8277M
Summary of Contents for Renesas ISL8277M
- Page 1 ISL8277MEVAL1Z User’s Manual: Evaluation Board Industrial Analog and Power Rev 0.00 July 2017...
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Page 2: Specifications
Only bulk input and output capacitors are needed to finish the design. The 25A of continuous output current can be delivered without the need for airflow or a heatsink. The ISL8277M uses ChargeMode™ control architecture, which responds to a transient load within a single switching cycle. -
Page 3: Recommended Equipment
• Electronic load capable of sinking current up to 25A • Digital multimeters (DMMs) • Oscilloscope with higher than 100MHz bandwidth VOUT VSEN+ VSEN- VDRVIN VDRVOUT VR55 ISL8277M 10µF 10µF 10µF ENABLE SALRT SGND PGND Figure 1. Block Diagram UG115 Rev.0.00... -
Page 4: Functional Description
2. Functional Description Functional Description The ISL8277MEVAL1Z provides all circuitry required to evaluate the features of the ISL8277M. A majority of the features of the ISL8277M, such as compensation-free ChargeMode control, soft-start delay and ramp times, supply sequencing, and voltage margining are available on this evaluation board. For sequencing evaluation, the board can be connected to any Intersil digital module evaluation board that supports the Digital-DC™... -
Page 5: Quick Start Guide
Pin-Strap Option ISL8277MEVAL1Z can be configured in Pin-Strap mode with standard 1% 0603 resistors. The PMBus interface is not required to evaluate ISL8277M in Pin-Strap mode. Output voltage (V ), switching frequency ), input undervoltage protection (UVLO) threshold, and the device PMBus address can be changed by populating the recommended resistors at placeholders provided in the evaluation board. -
Page 6: Pcb Layout Guidelines
However, if the output voltage is increased or the board is operated at elevated temperatures, then the available current is derated. Refer to the derated current curves in the ISL8277M datasheet to determine the maximum output current the evaluation board can supply. - Page 7 ISL8277MEVAL1Z 3. PCB Layout Guidelines PGOOD LED ENABLE SWITCH INTERCONNECTS DDC AND SYNC BETWEEN BOARDS INTERCONNECTS DDC AND SYNC BETWEEN BOARDS CONNECT TO ZLUSBEVAL3Z TO DAISY CHAIN PMBus CONNECTION DONGLE. FOR MULTIPLE BOARD EVALUATION, CONNECT TO PMBUS DONGLE OUT CONNECTION OF OTHER BOARD PLACEHOLDER FOR SMA CONNECTOR TO MONITOR...
- Page 8 ISL8277MEVAL1Z Board Schematic Figure 4. Schematic...
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Page 9: Bill Of Materials
ISL8277MEVAL1Z 3. PCB Layout Guidelines Bill of Materials Reference Manufacturer Designator Description Manufacturer Part PWB-PCB, ISL8277MEVAL1Z, REVC, ROHS SHENZHEN ISL8277MEVAL1ZREVCPCB MULTILAYER PCB TECHNOLOGY CO., C4, C5, C6 CAP, SMD, 1210, 22µF, 25V, 10%, X7R, ROHS MURATA GRM32ER71E226KE15L CAP, SMD, 0402, 1µF, 6.3V, 10%, X5R, ROHS PANASONIC ECJ-0EB0J105K C7, C8... - Page 10 ISL8277MEVAL1Z 3. PCB Layout Guidelines Reference Manufacturer Designator Description Manufacturer Part BOTTOM BUMPONS, 0.44inW x 0.20inH, DOMETOP, BLACK SJ-5003SPBL FOUR CORNERS PLACE ASSY BAG, STATIC, 5x8, ZIPLOC, ROHS INTERSIL 212403-013 IN BAG DO NOT POPULATE OR PURCHASE AFFIX TO LABEL-DATE CODE_LINE 1: YRWK/REV#, LINE 2: INTERSIL LABEL-DATE CODE BACK OF...
- Page 11 ISL8277MEVAL1Z 3. PCB Layout Guidelines Figure 6. PCB - Top Layer Figure 7. PCB - Inner Layer - Layer 2 (Top View) UG115 Rev.0.00 Page 11 of 16 Jul 28, 2017...
- Page 12 ISL8277MEVAL1Z 3. PCB Layout Guidelines Figure 8. PCB - Inner Layer - Layer 3 (Top View) Figure 9. PCB - Bottom Layer (Bottom View) UG115 Rev.0.00 Page 12 of 16 Jul 28, 2017...
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Page 13: Configuration File
4. Configuration File Configuration File Sample configuration file for the ISL8277M module. Copy and paste (from RESTORE_FACTORY TO ### End User Store) to a text editor and save it as Confile_file_name.txt. The # symbol is used for a comment line. The following settings are already loaded to ISL8277M module as factory defaults. -
Page 14: Measured Data
ISL8277MEVAL1Z 5. Measured Data Measured Data The following data was acquired using an ISL8277MEVAL1Z evaluation board. 0.8V 1.2V 1.8V 0.8V 1.2V 2.5V 3.3V 1.5V 1.8V 2.5V 3.3V 300 350 400 450 500 550 600 650 700 750 800 850 900 SWITCHING FREQUENCY (kHz) Figure 10. -
Page 15: Revision History
10. It is the responsibility of the buyer or distributor of Renesas Electronics products, or any other party who distributes, disposes of, or otherwise sells or transfers the product to a third party, to notify such third party in advance of the contents and conditions set forth in this document. - Page 16 ISL8277MEVAL1Z UG115...
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