Analog Devices ADP1046A Evaluation Board ADP1046ADC1-EVALZ ADP1046ADC1-EVALZ データシート
製品コード
ADP1046ADC1-EVALZ
UG-320
Evaluation Board User Guide
Rev. A | Page 16 of 48
10180-
013
Figure 14. Fan Connection to Cool Heat Sink, Transformers, and Inductors
FAN CONTROL
The OUTAUX PWM is used to control an external fan
connected to Connector J19. The average speed of the fan
depends on the load. The PWM input to the fan is duty cycle
modulated and is programmed with the main PWM output in a
manner that provides the maximum speed at maximum load
and vice versa. Note that the fan is not included in the kit.
connected to Connector J19. The average speed of the fan
depends on the load. The PWM input to the fan is duty cycle
modulated and is programmed with the main PWM output in a
manner that provides the maximum speed at maximum load
and vice versa. Note that the fan is not included in the kit.
DYNAMIC PHASE SHEDDING AND STANDBY
POWER
. This setting is programmed to activate within
75 µs of detecting the output current via the CS2+ and CS2−
pins. The IC is programmed to enter dual phase mode at 60% of
the full load current and automatically turns off the PWMs for
the second phase when the load current is less than approxi-
mately 54% of the full load current.
Using an external microcontroller to communicate to the IC,
the
pins. The IC is programmed to enter dual phase mode at 60% of
the full load current and automatically turns off the PWMs for
the second phase when the load current is less than approxi-
mately 54% of the full load current.
Using an external microcontroller to communicate to the IC,
the
can also disable the synchronous rectifiers and
save more power at no load by entering the pulse skipping
mode, where the entire PWM pulse is skipped if the required
duty cycle is less than the programmed value.
mode, where the entire PWM pulse is skipped if the required
duty cycle is less than the programmed value.