Application note Complete DDR3/DDR3L SDRAM power solution using DA9063 AN-PM-029
●The Dialog DA9063 Power Management IC (PMIC)provides a complete power solution for DDR3 and DD3L memory systems. It integrates several synchronous buck converters able to cover the complete power requirements of a DDR3/DDR3L memory system. Any of the internal bucks can be used to supply both core and I/O voltages of the memory.
A dedicated buck (BuckPRO) has been designed to generate a tracking supply voltage for supplying a VTT termination network where it is required. BuckPRO is able to both sink and source current with a fast transient response.
An internal buffered resistive divider generates a high precision reference voltage which tracks the VDDQ supply of the memory and complies with the JEDEC standard (JES79).
The solution covers a wide range of applications including laptops, desktops, tablets and other applications in consumer, industrial and automotive markets.
●In today’s applications the need for large memory and increased data rates, brings challenges to the memory system design. To support these faster data rates requires an increased clock frequency which necessitates fast edges. Additionally, the demand for increased storage capacity leads to denser packaging and more complex interconnects. The result is an increase in signal-integrity concerns such as reflections, distortions, cross-talk, ground bounce, jitter and SSN on the PCB, which cause inter-symbol interference (ISI).
In applications where a large memory is needed the memory supplier will generally recommend implementation of memory termination to mitigate the above concerns. The DA9063 integrates full support for DDR termination. This feature enables a reduction in the overall system cost and in reduced PCB area required to implement the solution.
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Application note & Design Guide |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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13 - Oct - 2015 |
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Revision 2.0 |
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AN-PM-029 |
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942 KB |
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