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H2511-04121-1-16W1 Datasheet(PDF) 1 Page - Intersil Corporation |
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H2511-04121-1-16W1 Datasheet(HTML) 1 Page - Intersil Corporation |
1 / 9 page 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. Copyright Intersil Americas Inc. 2012. All Rights Reserved. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. Application Note 1793 ISL8225MEVAL4Z Dual 15A/Optional 30A Cascadable 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 VOUT setting resistors. The simplicity of the ISL8225M is its off-the-shelf, unassisted implementation. Patented current sharing in multi-phase operation greatly reduces ripple currents, BOM costs, and complexity. The ISL8225M has a thermally enhanced, compact 17mm x17mm x 7.5mm 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. This ISL8225MEVAL4Z evaluation board is designed for dual 15A output applications. Optionally, this board can easily be converted for 30A single output use. Multiple ISL8225MEVAL4Z boards can be cascadable through the SYNC and CLKOUT pins to operate with phase shifting, for paralleling or multiple output use. The input voltage of this board is 4.5V to 20V and the default outputs on this board are set at 1.2V and 1.5V. Related Resources Recommended Equipment • 0V to 20V power supply with at least 5A source current capability • Electronic load capable of sinking current up to 30A • Digital multimeters (DMMs) • 100MHz quad-trace oscilloscope Quick Start For dual output operation, the inputs are BA7 (VIN1), BA8 (GND), BA3 (VIN2) and BA4 (GND). The outputs are BA5 (VOUT1), BA6 (GND), BA1 (VOUT2) and BA2 (GND). For paralleled single output operation, the inputs are BA7 (VIN1) and BA8 (GND). The outputs are BA5 (VOUT1) and BA6 (GND) with BA5 and BA1 shorted. Dual Output Mode 1. Connect a power supply capable of sourcing at least 5A to the inputs BA7 (VIN1), BA8 (GND), BA3 (VIN2) and BA4 (GND) of the ISL8225MEVAL4Z evaluation board, with a voltage between 4.5V to 20V. VIN1 and VIN2 can be different with R18 and R19 open. 2. Connect an electronic load or the device to be powered to the outputs BA5 (VOUT1) and BA6 (GND), BA1 (VOUT2) and BA2 (GND) of the board. All connections, especially the low voltage, high current VOUT lines, should be able to carry the desired load current and should be made as short as possible. See how-to video at intersil.com/ evid03 FIGURE 1. ISL8225MEVAL4Z BOARD IMAGE LOAD2 (0A~15A) VOUT2 4.5V TO 20V VIN V + - V + - LOAD1 (0A~15A) V + - VOUT1 December 6, 2012 AN1793.1 |
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