MSK4361H(2015) 查看數據表（PDF） - M.S. Kennedy
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MSK4361H Datasheet PDF : 8 Pages
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APPLICATION NOTES
MSK4361 PIN DESCRIPTIONS
AV+, BV+, CV+ - are the power connections from the hybrid
to the bus.The pins for each phase are brought out separately
and must be connected together to the V+ source externally.
The external wiring to these pins should be sized according to
the RMS current required by the motor. These pins should be
bypassed by a high quality monolithic ceramic capacitor for high
frequencies and enough bulk capacitance for keeping the V+
supply from drooping. 78 µF of ceramic capacitance and 6200
µF of bulk capacitance was used in the test circuit. The voltage
range on these pins is from 16 volts up to 75 volts.
AØ, BØ & CØ - are the connections to the motor phase windings
from the bridge output. The wiring to these pins should be sized
according to the required current by the motor. There are no short
circuit provisions for these outputs. Shorts to V+ or gound from
these pins must be avoided or the bridge will be destroyed.
AVS, BVS, CVS - are the return pins on the bottom of each half
bridge. They are brought out separately and should be connected
together externally to allow the current from each half bridge to
flow through the sense resistor. The wiring on these pins should
be sized according to the current requirements of the motor.
RTN - is the power return connection from the module to the
bus. All ground returns connect to this point from internal to the
module in a star fashion. All external ground connections to this
point should also be made in a similar fashion. The V+ capacitors
should be returned to this pin as close as possible. Wire sizing
to this pin connection should be made according to the required
current.
LGND - is an isolated ground connection to the RTN pin of the
hybrid that is connected internally. For any circuitry that needs
to be connected to the RTN pin without the influence of current
flow through RTN should be connected at this point.
GND - is a ground pin that connects to the ground plane for all
low powered circuitry inside the hybrid.
+15 VIN - is the input for applying +15 volts to run the low power
section of the hybrid. This pin should be bypassed with a 10 µF
capacitor and a 0.1 µF capacitor as close to this pin as possible.
-15 VIN - is the input for applying -15 volts to run the low power
section of the hybrid. This pin should be bypassed with a 10 µF
capacitor and a 0.1 µF capacitor as close to this pin as possible.
CURRENT COMMAND (+,-) - are differential inputs for controlling
the module in current mode. Scaled at ±3 amps per volt of input
command, the bipolar input allows both forward and reverse cur-
rent control capability regardless of motor commutation direction.
The maximum operational command voltage should be ±10 volts
for ±30 amps of motor current.
CURRENT MONITOR - is a pin providing a current viewing signal
for external monitoring purposes. This is scaled at ±3 amps of
motor current per volt output, up to a maximum of ±10 volts, or ±30
amps. As ±30 amps is exceeded, the peaks of the waveform may
become clipped as the rails of the amplifiers are reached. This
voltage is typically ±12.5 volts, equating to ±37 amps of current
peaks. In DIS mode, the CURRENT MONITOR output may rail
positive or negative, depending on internal bias currents. When
re-enabled, this output will resume expected operation.
E/A OUT - is the current loop error amp output connection. It is
brought out for allowing various loop compensation circuits to be
connected between this and E/A-.
E/A- - is the current loop error amp inverting input connection.
It is brought out for allowing various loop compensation circuits
to be connected between this and E/A OUT.
CLOCK SYNC - is an input for synchronizing to an external clock.
The sync circuit will trigger on the edges of the applied clock and
effectively shorten the period of the internal oscillator on each
cycle. The frequency can be increased from a free running 22
KHz to 25 KHz maximum. The clock applied shall be 15 volts
amplitude with at least a 10% duty cycle.
REFOUT - is a 6.25 volt regulated output to be used for powering
the hall devices in various motors. Up to 15 mA of output current
is available.
HALL A, B & C - are the hall input pins from the hall devices in
the motor. These pins are internally pulled up to 6.25 volts. The
IN halls can reflect a 120/240 degree commutation scheme or a
60/300 degree scheme.
BRAKE - is a pin for commanding the output bridge into a motor
BRAKE mode. When pulled low, normal operation commences.
When pulled high, the 3 high side bridge switches turn on, causing
rapid deceleration of the motor and will cease motor operation
until pulled high again. Logic levels for this input are TTL com-
patible. It is internally pulled high.
DIS - is a pin for externally disabling the output bridge. A TTL
logic low will enable the bridge and a TTL logic high will disable
it. It is internally pulled up by a 100µAmp pullup.
60/120 - is a pin for selecting the orientation of the commutation
scheme of the motor. A high state will produce 60/300 degree
commutation, whereas a low state will produce 120/240 degree
commutation. Logic levels for this input are TTL compatible. It is
internally pulled high.
3
8548-146 Rev. J 1/15
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