Embedded ACPI Compliant DDR Power Generation Evaluation Board
The ISL6548A-6506EVAL1Z evaluation board combines the ISL6548A and ISL6506 to provide a complete ACPI compliant power solution for systems with DDRI, DDRII or DDRIII....
The ISL6548A provides a complete ACPI compliant power solution for up to 4 DIMM dual channel DDR/DDR2 Memory systems. Included are both a synchronous buck controller to supply VDDQ during S0/S1 and S3 states. During S0/S1 state, a fully integrated sink-source regulator generates an accurate (VDDQ/2) high current VTT voltage without the need for a negative supply. A second PWM controller, which requires external MOSFET drivers, is available for regulation of the GMCH Core voltage. A sink/source LDO controller is also integrated for the CPU/GMCH VTT termination voltage regulation. Another LDO is available for the ICH7 voltage. The switching PWM controller drives two N-Channel MOSFETs in a synchronous-rectified buck converter topology. The synchronous buck converter uses voltage-mode control with fast transient response. The switching regulator provides a maximum static regulation tolerance of ±2% over line, load, and temperature ranges. The output is user-adjustable by means of external resistors down to 0. 8V. An integrated soft-start feature brings all outputs into regulation in a controlled manner when returning to S0/S1 state from any sleep state. During S0 the VIDPGD signal indicates that the GMCH and CPU VTT termination voltage is within spec and operational. All outputs, except VICH7, have undervoltage protection. The switching regulator also has overvoltage and overcurrent protection. Thermal shutdown is integrated.
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Type | Title | Date |
Datasheet | PDF 840 KB | |
Brochure | PDF 5.49 MB 日本語 | |
End Of Life Notice | PDF 603 KB | |
White Paper | PDF 295 KB | |
Application Note | PDF 509 KB | |
Application Note | PDF 397 KB | |
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The ISL6548A-6506EVAL1Z evaluation board combines the ISL6548A and ISL6506 to provide a complete ACPI compliant power solution for systems with DDRI, DDRII or DDRIII....
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