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STK5U4UFE0D-E 数据表(PDF) 9 Page - ON Semiconductor

部件名 STK5U4UFE0D-E
功能描述  Intelligent Power Module (IPM)
Download  14 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

STK5U4UFE0D-E 数据表(HTML) 9 Page - ON Semiconductor

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Undervoltage lockout protection (UVP)
If VD goes below the VD supply undervoltage
negative going input threshold, the IGBT gate drives
will be turned off. If VD rises above the positive going
input threshold, the IGBT gate drivers will return to
normal operation. The Fox signal outputs stay low
during the UVP state. The UVP does not depend on
input signal voltage.
Desaturation Protection function (DESATP)
The Desaturation Protection function (DESATP) is
implemented by comparing the voltage between the
collector and the emitter of IGBT with an internal
reference of 6.5 V (typ). If a short circuit occurs after
the IGBT is turned on and saturated, there will be a
delay while the blanking capacitor is charged from the
VCE(sat) level of the IGBT to the trip voltage of the
comparator. If the collector voltage exceeds the trip
level, a DESATP fault is triggered and the Fox signal
(FoU, FoV, FoW, FoN) is set HIGH. The fault
condition is cleared after the input signal is set to
inactive (HIGH due to negative logic on input).
Additional protection against abnormal current levels
such as a protection circuit using external shunt
resistors, and a fuse on the input voltage line is
strongly recommended.
Capacitors on High Voltage and VD supplies
Both the high voltage and VD supplies require an
electrolytic capacitor and an additional high frequency
capacitor.
Disconnection of U, V and W terminals
Disconnection of terminals U, V, or W during normal
motor operation will cause damage to IPM, use caution
with this connection.
Minimum input pulse width
When input pulse width is less than 1 μs, an output
may not react to the pulse. (Both ON and OFF signal)
Layout
The traces between the IPM terminals and each
optocoupler must be as short as possible, and the stray
capacitance between the primary and the secondary
must be considered in order to select a layout pattern.
It is essential that trace length between terminals in the
snubber circuit be kept as short as possible to reduce
the effect of surge voltages. Recommended value of
“CS” is in the range of 0.1 to 10 μF. This capacitor
should be a high frequency capacitor.
Thermistor
Inside the IPM, a thermistor used as the temperature
monitor for internal substrate is connected between
“TH1” and “TH2”. The variation of thermistor
resistance with temperature is shown in this datasheet.
Dimensioning of bootstrap capacitor
The module includes an internal bootstrap circuit
requiring one bootstrap capacitor for each phase, each
with a value CB. The recommended value of CB is in
the range of 1 to 47 μF, however, this value needs to be
verified prior to production. When not using the
bootstrap circuit, each high side driver power supply
requires an external independent floating power supply.
If the selected capacitance is more than 47 μF (±20%),
connect a resistor (about 40 Ω) in series between each
three-phase upper side power supply terminals (VDU,
VDV, VDW) and each bootstrap capacitor. When not
using the bootstrap circuit, each upper side gate driver
power supply requires an external independent floating
power supply.
Also we recommend adopting safety measures such as
using Zener diodes for surge absorption or low
impedance capacitors around each power supply
terminal to suppress voltage transients.
CB value calculation for bootstrap circuit
Calculate condition
Item
Symbol
Value
Unit
High-side power supply.
VD1,2,3
15
V
Total gate charge of output
power IGBT at 15 V.
Qg
311
nC
High-side power supply
undervoltage protection.
UDUVP-
12
V
High-side power dissipation. ID max
17
mA
ON time required for CB
voltage to fall from 15 V to
UVP
Ton-max
-
s
Capacitance calculation formula
CB must not be discharged below to the upper limit of
the UVP - the maximum allowable on-time (Ton-max)
of the upper side is calculated as follows:
VD1, 2, 3 * CB – Qg – ID max * Ton-max = UVP * CB
CB = (Qg + ID max * Ton-max) / (VD1, 2, 3 – UVP)
CB is recommended to be approximately 3 times the
value calculated above. The recommended value of CB
is in the range of 1 to 47 μF, however, the value needs
to be verified prior to production.
Figure 6. Bootstrap selection as a function of
maximum ON time
0.01
0.1
1
10
100
0.01
0.1
1
10
Ton-max [ms]
CB vs. Ton-max


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