ADM00345 Microchip Technology, ADM00345 Datasheet - Page 14

• Manufacturer Part Number: ADM00345
• Description: Power Management IC Development Tools 3-Phase BLDC Snsrlss Fan Cntrllr
• Manufacturer: Microchip Technology
• Type: Other Power Managementr

Specifications of ADM00345

• Rohs: yes
• Product: Demonstration Boards
• Tool Is For Evaluation Of: MTD6505

MTD6505 3-Phase BLDC Sensorless Fan Controller Demo Board User’s Guide
DS52009A-page 14
2.2.1.1
The Control/Monitoring Group box contains two buttons:
• Turn On/Off VDD button enables/disables the power supply on the V
• Change Direction is used to inverse the sense of the fan rotation. The Change
2.2.1.2
The R
This value depends on the K
to define the correct R
One particular mode, HighZ, allows the setting of an external R
directly on the plug-in module.
In order to use the MTD6502B with the MTD6505 3-Phase BLDC Sensorless Fan Con-
troller Demo Board, use K
2.2.1.3
This part of the GUI displays a chart of the MTD6505 current consumption (mA) on the
V
quency. The chart adds 10 values per second. The three buttons have the following
functions:
• Start/Stop – allows the values acquisition to start or stop
• Clear – removes all the values added to the chart
• Auto Scale – allows the restoration of the default scaling. In the default scaling
2.2.1.4
The PWM Group box provides a slide bar to set the PWM ratio on the MTD6505 PWM
pin. The gauge below indicates the current PWM applied.
2.2.1.5
The V
below indicates the instant V
Sensorless Fan Controller Demonstration Board.
2.2.1.6
Current field shows the instant current measure (mA). Speed field shows the instant
speed measure (RPM).
DD
MTD6505 device.
Direction button is available only when V
mode, the chart will automatically adjust the scaling to ensure the complete view
of the whole added values. In addition, when selecting a part of the chart with the
mouse, it is possible to zoom in the selection. The mouse wheel zoom in/out is
also enabled.
pin, and the fan speed (Revolutions Per Minute - RPM) by measuring the FG fre-
DD
PROG
Group box also provides a slide bar to set the desired V
CONTROL/MONITORING
R
PWM PIN
V
CURRENT/SPEED FIELDS
CHART
PROG
Pin Group box allows the selection of the desired R
DD
PIN
PIN
PROG
M
= 0.
M
DD
Value”
(mV/Hz) of the fan. See the section
value measured by the MTD6505 3-Phase BLDC
for more information on the R
DD
is turned off.
© 2011 Microchip Technology Inc.
PROG
PROG
DD
Section 2.3 “How
PROG
value. The gauge
resistor value
resistor value.
DD
selection.
pin of the