
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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