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6 Device PowerSupply High Current Power Supply (HCDPS)

168 System Reference, January 2001

High Current Power Supply

(HCDPS)

This section provides you with information on:

• “HCDPS General Description” on page 168

• “HCDPS Specifications” on page 176

• “HCDPS Decoupling Recommendations” on page 176

• “HCDPS Switching Voltages (Vbump)” on page 177

• “Ganging HCDPS Boards” on page 177

• “Disconnecting the HCDPS” on page 177

• “Routing HCDPS Lines” on page 177

• “Current and Voltage Measurement” on page 178

• “Firmware Commands for the HCDPS” on page 178

HCDPS General Description

The High Current Power Supply is required as a power

source for devices, often requiring only low voltages but

drawing high currents or having large current swings,

such as the following:

• High-end Microprocessors

• Multichip Modules

Each HCDPS provides 100A and two HCDPS can be ganged

together to provide up to 200A. The modules reside inside

the testhead. Note, however, that the HCDPS board only

contains one supply (channel) and not four as is the case

with the General Purpose and High Voltage power sup-

plies. Furthermore, in contrary to the GPDPS and HVDPS,

the HCDPS does not have performance ranges.

As with the General Purpose and High Voltage DPS, the

High Current DPS can also measure currents and voltages

(see “Current and Voltage Measurement” on page 178).

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AWG G3 PAD FOR PS3 Spezifikationen Seite 168