DC1540A Linear Technology, DC1540A Datasheet - Page 42

• Manufacturer Part Number: DC1540A
• Description: LTC2978 Demoboard (includes DC1360A + DC1361A), Requires DC1613A
• Manufacturer: Linear Technology
• Series: -r

Specifications of DC1540A

• Design Resources: DC1540 Design File
• Main Purpose: Power Management, Power Supply Supervisor/Tracker/Sequencer
• Embedded: No
• Utilized Ic / Part: LTC2978
• Primary Attributes: Voltage Detector & Supervisor
• Secondary Attributes: -
• Kit Application Type: Power Management
• Application Sub Type: Power Supply Controller
• Features: Demonstration System For The LTC2978 Octal I2C / SMBus / PMBus Power Supply Monitor & Controller
• Lead Free Status / Rohs Status: Not applicable / Not applicable

MFR_RETRY_DELAY
This command determines the retry interval when the
LTC2978 is in hiccup mode in response to a fault condition.
MFR_RETRY_DELAY Data Contents
MFR_RESTART_DELAY
This command determines how the CONTROLn pins are
adjusted before use. The time the adjusted version of the
CONTROLn pin is in the off polarity is stretched by this com-
mand to be at least Mfr_restart_delay ms. CONTROLn pin
transitions whose OFF time exceeds Mfr_restart_delay are
not affected by this command. A value of all zeros disables
this feature.
MFR_RESTART_DELAY Data Contents
LTC2978
operaTion

b[15:0] Mfr_retry_delay The data uses the linear format:
b[15:0] Mfr_restart_delay The data uses the linear format:
BIT(S) SYMBOL
BIT(S) SYMBOL
OPERATION
T(Symbol) = Y • 2
Where N = b[15:11] is a 5-bit two’s
complement integer and
Y = b[10:0] is an 11-bit two’s complement
integer
This delay is counted using SHARE_CLK
only.
Delays are rounded to the nearest 200µs.
Units: ms. Max delay is 13.1 sec.
OPERATION
T(Symbol) = Y • 2
Where N = b[15:11] is a 5-bit two’s
complement integer and
Y = b[10:0] is an 11-bit two’s complement
integer
This delay is counted using SHARE_CLK
only.
Delays are rounded to the nearest 200µs.
Units: ms. Max delay is 13.1 sec.
N
N
MFR_VOUT_PEAK
This command returns the maximum ADC measured value
of the channel’s output voltage. This command is not sup-
ported for odd channels that are configured to measure
current. This register is reset to zero when the LTC2978
emerges from power-on reset or when a CLEAR_FAULTS
command is executed.
MFR_VOUT_PEAK Data Contents
MFR_VIN_PEAK
This command returns the maximum ADC measured value
of the input voltage. The contents of this register are reset
to ‘h7C00 when the LTC2978 emerges from power-on reset
or when a CLEAR_FAULTS command is executed.
MFR_VIN_PEAK Data Contents
MFR_TEMPERATURE_PEAK
This command returns the maximum ADC measured
value of junction temperature in °C as determined by
the LTC2978’s internal temperature sensor. The contents
b[15:0] Mfr_vout_peak[15:0] The data uses the linear mode format as
b[15:0] Mfr_vin_peak[15:0] The data uses the linear format:
BIT(S) SYMBOL
BIT(S) SYMBOL
OPERATION
V(Symbol) = Y • 2
where N = b[15:11] is a 5-bit two’s
complement integer and
Y = b[10:0] is an 11-bit two’s
complement integer
Units: V
OPERATION
defined by VOUT_MODE:
V(mfr_vout_peak) = Y • 2
b[15:0] is an unsigned integer and N =
Vout_mode_parameter is a 5-bit two’s
complement exponent that’s hardwired
to –13 decimal.
Units: V.
N
N
where Y =
2978fa