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Summary of Contents for Intersil ISL70321SEHDEMO1Z
- Page 1 ISL70321SEHDEMO1Z User’s Manual: Demonstration Board High Reliability Rev 0.00 Jul 2017...
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Page 2: Key Features
Jul 24, 2017 Overview The ISL70321SEHDEMO1Z is a Small Form Factor (SFF) board suitable for integrating onto an existing circuit board or onto a prototype system circuit. The demonstration board provides up to four sequencing events for Point-of-Load (POL) regulators powering multi-rail loads. -
Page 3: Operating Range
After the UP input is pulled low, the ISL70321SEHDEMO1Z starts sequencing the ENABLE outputs from high to low, EN4 through EN1 order. The DONE output is pulled low when the down sequencing is completed. -
Page 4: Application Considerations
ISL70321SEHDEMO1Z 3. Application Considerations Application Considerations Connecting Unused Rails The simplified schematic in Figure 2 highlights the necessary connections for unused EN and VM pins. The unused VM and EN must be shorted together in pairs and each pair pulled up to VCC5 with an external resistor. - Page 5 ISL70321SEHDEMO1Z 3. Application Considerations POL1 VOUT UP/INIT UP/INIT POL2 VOUT POL1 VOUT POL3 VOUT POL2 VOUT POL3 VOUT 5ms/DIV 2ms/DIV Figure 4. Sequencing On 3 POLs, RTDLY = 2ms Figure 5. Sequencing Off 3 POLs, RTDLY = 2ms KILL KILL DONE Figure 6.
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Page 6: Pcb Layout Guidelines
ISL70321SEHDEMO1Z 4. PCB Layout Guidelines PCB Layout Guidelines The ISL70321SEHDEMO1Z PCB layout has been optimized for size and ease of use. The following key features are: • The small 2” x 1” size allows easy drop-in placement in system • Connection posts allow for quick wire-in to circuitry •... -
Page 7: Bill Of Materials
ISL70321SEHDEMO1Z 4. PCB Layout Guidelines Bill of Materials Reference Manufacturer Item Qty Designator Value Rating Type PCB Footprint Manufacturer Part Number Intersil ISL70321SEH/PROTO C1, C2 0.47µF SM0603 Various Generic 0.22µF SM0402 Various Generic R1 - R17 10kΩ 1/16W CHIP SM0402... -
Page 8: Revision History
All trademarks and registered trademarks are the property of their respective owners. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the document is current before proceeding. - Page 9 ISL70321SEHDEMO1Z UG124...
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