HP Enterprise/Mid-Market Desktop PC Power Supply Architecture

ManualsBrandsHP ManualsDesktopsHP Compaq 6000 Pro Microtower PC

HP Enterprise/

Mid-Market

Desktop PC Power

Supply Architecture

March 2010

Table of Contents:

Introduction .............................................................................................2

2009/2010 Power Supply Architecture ....................................................2

Intel

ATX12V Standard .................................................................................. 2

HP AC Adapter with Smart ID Technology ........................................................ 4

HP Mid-Level/Enterprise PC Power Supply Architectures ............................4

Convertible Mini-Tower (CMT)/Micro-Tower (MT) .............................................. 5

Small Form Factor (SFF) ................................................................................... 5

Ultra-Slim Desktop (USDT) ............................................................................... 6

New HP +12V Power Supply Architecture ........................................................ 6

Why Change the Power Supply Architecture? ...........................................8

Regulatory Requirements ................................................................................. 8

Product Optimization ...................................................................................... 9

Common MT and CMT Power Supply ................................................... 9

SFF Cable Routing ............................................................................. 9

+5V and +3.3V Operational Voltages .................................................. 9

+5V Standby vs. +3.3V Standby ....................................................... 10

Summary of HP Power Supply Standard Compatibility ............................11

Future Opportunities ..............................................................................11

Summary of content (11 pages)

PAGE 1
HP Enterprise/ Mid-Market Desktop PC Power Supply Architecture March 2010 Table of Contents: Introduction .............................................................................................2 2009/2010 Power Supply Architecture ....................................................2 Intel® ATX12V Standard ..................................................................................2 HP AC Adapter with Smart ID Technology ........................................................
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Introduction The HP Compaq 6000/6005 Pro Series and HP Compaq 8000/8100 Elite Series desktop PC products introduced a new PC power supply architecture designed to improve power delivery and efficiency in the face of new and challenging Energy Star and other regulatory requirements. This document explains the new HP power supply architecture and compares it to other power supply architectures found in the industry today.
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Figure 1. Power Supply Cabling for the dc7900 CMT Systems Note This illustration is Figure 7-3 of the Technical Reference Guide for the HP Compaq dc7900 Series. The main ATX specification is also supported by supplemental specifications, such as MicroATX and BTX—similar standards that focus on the mechanical interfaces (large system vs. small system) rather than the electrical interfaces or power supply. The Power Supply Design Guide for Desktop Platform Form Factors (http://www.formfactors.org/FFDetail.
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HP AC Adapter with Smart ID Technology No standard governs external power adapters commonly used by notebook PCs and some smaller form factor desktop designs (i.e., the HP USDT form factor). For many reasons, the notebook PC industry has not centered on a common interface standard.
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Convertible Mini-Tower (CMT)/Micro-Tower (MT) The CMT and MT form factor power supplies have been based on the Intel ATX12V standard; however, these form factors stopped supporting the Intel ATX12V standard with the introduction of the dc7600 product family in 2005. Prior to the dc7600 product line, the HP tower chassis could support an ATX12V standard power supply with an adapter kit. With the introduction of the dc7600 line in 2005, the chassis could no longer support a standard ATX12V power supply.
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the smaller micro-fit connector design of the dc7700 and dc7800 SFF products. Instead of using the optional 6-pin connector defined by the ATX standard for the fan control signals, HP simply used a common fan connector used by other fans in the system. The primary reason for using this style of connector was that the dc5800 motherboard was shared between the SFF and MT chassis, and the MT required a rear chassis fan connection instead of the power supply fan connection.
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Figure 2. Power Distribution and Cabling, Block Diagram Note This illustration is Figure 7-2 of the Technical Reference Guide for the HP Compaq 8000/8000f Elite Series.
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Why Change the Power Supply Architecture? Two primary reasons were driving the decision to develop a new power supply for HP business PC products. First, the increasing regulatory focus on power consumption is forcing the industry to explore innovative solutions to meet increasingly strict product requirements. Second, there is an increasing emphasis on smaller form factor PC products, and the size and bulk of the current industry interface is a major obstacle to optimizing smaller form factors.
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Product Optimization Common MT and CMT Power Supply In the 2008 HP business PC product lineup, the CMT used a different power supply, as did the MT. To improve product leverage and efficiency, the 2009/2010 generation CMT and MT platforms share a common power supply. One obstacle to leveraging power supplies between multiple chassis is the quantity and location of the expansion optical and hard drive bays. The drive power cable is typically provided directly by the power supply.
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(DDR2) to +1.5V (DDR3). This trend will continue as legacy standards, such as PCI, are replaced by newer standards, such as PCI Express. The most common voltage requirements on the PCA that consume a majority of system power are ≤ +1.5V. Any available voltage +3.3V or greater can be used generate these lower voltages. The new HP power supply architecture utilizes +12V to generate lower voltages. While +5V and +3.
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Summary of HP Power Supply Standard Compatibility As shown in the discussion above, HP Enterprise/Mid-market business PC products have not supported a formal power supply design standard for many product cycles. The mechanical standards were abandoned long ago, and the few remaining products that followed the industry’s electrical standard have now been replaced by a new HP power supply architecture beginning with the 2009 business PC platforms.