Power supply tracker can also margin supplies
Dan Eddleman
Abstract
A power supply tracker that can also margin supplies is described.
Keywords
Power supply margining
LTC2923 tracking cell
Power supply margining is a technique commonly used to test circuit boards in production. By adjusting power supply output voltages, electrical components are tested at the upper and lower supply voltage limits specified for a design. The LTC2923 power supply tracking controller can be used to margin supplies in addition to its usual task of tracking multiple power supplies.
The LTC2923 uses the simple tracking cell shown in Figure 276.1 to control the ramp-up and ramp-down behavior of multiple supplies. This cell servos the TRACK input ...
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