Mfr_Pwm_Mode_Ltc3882-1 - Linear Technology Analog Devices LTC3882-1 Datasheet

PMBus COMMAND DETAILS

MFR_PWM_MODE_LTC3882-1

The MFR_PWM_MODE_LTC3882-1 command sets important PWM controls for each channel. The addressed channel(s)
must be turned off by its RUN pin, OPERATION command, or their combination, when this command is issued. Oth-
erwise the LTC3882-1 will NACK the command byte, ignore the command and its data, and assert a BUSY fault.
When bit 5 is cleared, the LTC3882-1 computes temperature in °C from ∆V
T = (G • ∆V • q/(K • ln(16))) – 273.15 + O
BE
When bit 5 is set, the LTC3882-1 computes temperature in °C from TSNSn voltage measured by the ADC as
T = (G • (1.35 – V
TSNSn
For both equations,
G = MFR_TEMP_1_GAIN • 2
O = MFR_TEMP_1_OFFSET
Supported Values:
BIT MEANING
7 Output voltage range select:
0: Maximum V
OUT
1: Maximum V
OUT
6* Enable V servo.
OUT
5 External temperature sense:
0: ∆V measurement.
BE
1: Direct voltage measurement.
4:3 BOOST refresh width:
11b: 250ns
10b: 125ns
01b: 50ns
00b: 25ns
2 (Reserved).
1 PWM control protocol:
0: 3-State PWM output.
1: 3-State PWM output with no DCM (including soft-start) or hardware ROC response (including OV).
0 PWM mode:
0: Forced continuous inductor current.
1: Discontinuous inductor current.
*This bit is ignored (servo disabled) if MFR_VOUT_AVP for this channel is programmed to a value greater than 0.0%.
This command has one data byte.
(PWM Configuration)
+ O)/4.3e-3) + 25
–14
, and
= 5.25V.
= 2.65V.
For more information
measured by the ADC at the TSNSn pin as
BE
www.analog.com
LTC3882-1
Rev A
77