2

dc2023afa

DEMO MANUAL DC2023A

performance summary

Glossary of terms

POWER SUPPLY CHANNEL

CH(0:7)

CH(8:15)

Manager

1/2 LTM2987

1/2 LTM2987

Nominal Untrimmed Output Voltages

1.0V, 1.1V, 1.2V, 1.3V, 1.4V, 1.5V, 1.7V, 1.8V

2.0V, 2.2V, 2.5V, 2.7V, 3.0V, 3.1V, 3.2V, 3.3V

Rated Output Current

0.3A

Default Margin Range

±5%

+13/–19 %

+11/–15%

Temperature

2 Internal

Common Characteristics—Specifications Valid Over Full Operating Temperature Range

PARAMETER

CONDITIONS

VALUE

MIN

TYP

MAX

UNITS

Supply Input Voltage Range

6

14

V

ADC Total Unadjusted Error

±0.25

%

ADC Voltage Sensing Input Range

0

6

V

The following list contain terms used throughout the

document.

Channel – The collection of functions that monitor, su-

pervise, and trim a given power supply rail.

EEPROM – Non-volatile memory (NVM) storage used to

retain data after power is removed.

Margin – Term used typically in board level testing that

increases/decreases the output voltage to look for sensi-

tivity/marginality problems

Monitor – The act of measuring voltage, current and

temperature readings.

NVM – Non-volatile memory, see EEPROM.

PMBus–Anindustrystandardpower-managementproto-

col with a fully defined command language that facilitates

communication with power converters and other devices

in a power system.

Rail – The final output voltage that the power supply

controller manages.

Supervise – The act of quickly responding to a voltage,

current, temperature condition that is compared to pre-

programmed values (fault settings).

Trim – The act of adjusting the final output voltage. A

servo loop is typically used to trim the voltage.