MSK4362_15 Datasheet, PDF (3/9 Pages) M.S. Kennedy Corporation – 75 Volt Motor Supply Voltage

APPLICATION NOTES
MSK4362 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 mod-
ule 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.
+REG IN - is the input pin for applying power to the internal +15V
regulator. To use the regulator, connect the +REG IN pin to the motor
bus (V+). See regulator app. note for more info on input voltage. If
the +15V regulator is not needed, no connection should be made
to +REG IN and +15 VOUT. +15 volts will have to be supplied from
an external source to +15VIN. Absolute maximum voltage on this
pin is 55 volts and minimum voltage is 18V. See voltage regulator
portion of app. note for additional information.
+15 VOUT - is a regulated +15 volt output available for external
uses. Up to 50 mA maximum is available at this pin. A 100 microfarad
capacitor should be connected as close to this pin as possible and
returned to GND along with a 0.22 microfarad monolithic ceramic
capacitor. CAUTION: See Voltage Regulator Power Dissipation.
+15 VIN - is the input for applying +15 volts to run the low power
section of the hybrid. This pin should be connected to +15 VOUT
if running off of the internal regulator. The required bypassing of
the +15 VOUT pin is sufficient in this case. For bringing in external
+15 volts, this pin should be bypassed with a 10 µF capacitor and
a 0.1 µF capacitor as close to this pin as possible.
-REG IN - is the input pin for applying power to the internal
-15V DC - DC converter. To use the converter, connect the -REG
IN pin to +15 VOUT pin. If the -15V converter is not needed, no
connection should be made to -REG IN and -15 VOUT. -15 volts
will have to be supplied from an external source to -15VIN. Also,
L1 can be left open. See voltage regulator portion of app. note for
important additional information.
L1 - is a pin for connecting an external inductor to the DC - DC
converter for generating -15 volts. A 47 µH inductor capable of
running at 250 KHz and about 1 amp of DC current shall be used.
Connect the inductor between L1 and GND.
-15 VOUT - is a regulated -15 volt output available for external uses.
Up to 50 mA maximum is available at this pin. A 100 microfarad
capacitor should be connected as close to this pin as possible and
returned to GND along with a 0.22 microfarad monolithic ceramic
capacitor. CAUTION: See Voltage Regulator Power Dissipation
-15 VIN - is the input for applying -15 volts to run the low power
section of the hybrid. This pin should be connected to -15 VOUT if
running off of the internal regulator. The required bypassing of the
-15 VOUT pin is sufficient in this case. For bringing in -15 volts,
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 current
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
IN ^{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 neg-
ative, 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 halls
can reflect a 120/240 degree commutation scheme or a 60/300
degree scheme.
3
8548-147 Rev. M 1/15