ADM00345 Microchip Technology, ADM00345 Datasheet - Page 16

• 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 16
2.2.2.1.1
The Measurement Settings Group box is used to specify the measurement corners
required:
• Number of iterations – for one corner
• PWM Corners Measurement – requires the PWM Max (%), PWM Step (%) and
• V
• Startup max delay – if the speed of the fan is measured as 0 RPM after this
• Inter test delay – specifies how many seconds are allocated to stop the fan
2.2.2.1.2
When the Startup box is checked, the startup measurements are enabled, measuring
every corner for this test. If Startup is not enabled, the Startup test is skipped. The other
tests will be executed if they are enabled.
2.2.2.1.3
The PWM Change Measurement starts up with a PWM value of 100%. After the
specified startup delay (entered in the Startup max delay field), the PWM changes
depending on the PWM corner specified. The software will then verify if the fan is still
running. This last check will occur after a delay value is specified in the
Braking Delay (s) field.
2.2.2.1.4
This measurement requires a specified number of samples in a specified condition to
check speed stability. If the Do every percent PWM and/or Do every 0.1(V) for V
are not checked, the corners are measured. For this test, the iterations numbering will
always be 1. When the Do every percent PWM option is enabled, the software will
override the specified settings, and the measurement will occur for every PWM; the
same procedure will happen for V
checked.
2.2.2.1.5
This group box contains three buttons that allows the user to control the work flow:
• Stop Measuring – starts and stops the required measuring
• Clear Result – clears the current result from the screen
• Save Results – stores the current measurement in an Excel file
PWM Min (%) values setting. The software will start with the maximum value
entered, and will decrease the PWM by the step value until reaches the minimum
entered PWM value.
corners. This means that for one V
delay, the startup is considered a fail. The recommended value for this field is 3s.
between two tests. This value will depend on the fan lag.
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corners are similar to the PWM corners. A V
Measurement Settings
Startup
PWM Change
Speed Curve and Stability
Measurement Control
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, if the check box Do every 0.1[V] for V
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corner, all PWM corners are measured.
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corner includes all PWM
© 2011 Microchip Technology Inc.
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