OM9369SP IRF [International Rectifier], OM9369SP Datasheet - Page 5
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OM9369SP
Manufacturer Part Number
OM9369SP
Description
FULL-FEATURED POWER MODULE FOR HIGH VOLTAGE DIRECT DRIVE OF 3-PHASE BRUSHLESS DC MOTOR
Manufacturer
IRF [International Rectifier]
Datasheet
1.OM9369SP.pdf
(14 pages)
The OM9369 3-phase brushless DC motor controller/
driver is designed to drive fractional to integral
horsepower motors. To ensure proper operation, it is
necessary to ensure that the high-side bootstrap
capcitors are charged during initial start-up. However,
the method(s) used to ensure this may be dependant
upon the application. For example, some applications
may only require that OV_COAST (pin 17) be
connected to ground, either via a hardwire connection
or via a switch (Enable/Disable), before applying Vcc.
When Vcc is applied, the controller/driver is forced
into brake mode for approximately 200µs (all high-
side drivers are disabled and all low-side drivers are
enabled).
www.irf.com
APPLICATIONS
Start-Up Conditions
Fig 1: Start-Up Circuit
This may not be adequate for other applications;
while maintaining a constant speed command, (above
zero), RC_BRAKE (pin 16) may have to be momentarily
connected to ground via a switch, either manually or
electronically (ref. Figure 1). Note that with the
component values shown in Figure 1, RC_BRAKE
is pulled for low for approximately 300ms after
applying Vcc at pin 1.
OM9369
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