AN-9080 Datasheet, PDF (5/28 Pages) Fairchild Semiconductor – Motion SPM 5 Series Version 2 User’s Guide

AN-9080
 To prevent malfunctions caused by noise and ripple in
supply voltage, a good quality filter capacitor with low
Equivalent Series Resistance (ESR) and Equivalent
Series Inductance (ESL) should be mounted very close
to these pins.
Low-Side Bias Voltage Pin / High-Side Bias
Voltage Pin
Pin: V_CC(U), V_CC(V), V_CC(W)
 These are control supply pins for the built-in ICs.
 These three pins should be connected externally.
 To prevent malfunctions caused by noise and ripple in
the supply voltage, a good quality filter capacitor with
low ESR and ESL should be mounted very close
between these pins and the COM pins.
Low-Side Common Supply Ground Pin
Pin: COM
 The common (COM) pin connects to the control ground
for the internal ICs.
 Important! To prevent switching noises caused by
parasitic inductance from interfering with operations of
the module, the main power current should not flow
through this pin.
Signal Input Pins
Pins: IN_(UL), IN_(VL), IN_(WL), IN_(UH), IN_(VH), IN_(WH)
 These pins control the operation of the MOSFETs.
 These pins are activated by voltage input signals. The
terminals are internally connected to the Schmitt
trigger circuit.
 The signal logic of these pins is active HIGH; the
MOSFET turns ON when sufficient logic voltage is
applied to the associated input pin.
 The wiring of each input needs to be short to protect the
module against noise influences.
 An RC filter can be used to mitigate signal oscillations
or any noise that traces of input signals may pick up.
Analog Temperature Sensing Output Pin
Pin: Vts
 This indicates the temperature of the V-phase HVIC
with analog voltage. HVIC itself creates some power
loss, but mainly heat generated from the MOSFETs
increases the temperature of the HVIC.
 Vts versus temperature characteristics is illustrated in
Figure 16.
APPLICATION NOTE
Positive DC-Link Pin
Pin: P
 This is a DC-link positive power supply pin of the
inverter.
 This pin is internally connected to the drains of the
high-side MOSFETs.
 To suppress the surge voltage caused by the DC-link
wiring or PCB pattern inductance, connect a smoothing
filter capacitor close to this pin and the negative DC-
link. Figure 35 shows more details. Typically metal
film capacitors are recommended.
Negative DC-Link Pins
Pins: N_U, N_V, N_W
 These are DC-link negative power supply pins (power
ground) of the inverter.
 These pins are connected to the source of low-side
MOSFET in each phase.
Inverter Power Output Pin
Pins: U, V, W
 Inverter output pins to be connected to the inverter load,
such as an electrical motor.
3.3. Package Structure
Figure 4 shows the internal package structure, including the
lead frame and bonding wires. This design has been revised
several times to further improve the manufacturability and
the reliability for customers.
Figure 4. Package Structure
© 2013 Fairchild Semiconductor Corporation
Rev. 1.0.1 • 4/16/14
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