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STK5C4U332J-E 数据表(PDF) 10 Page - ON Semiconductor

部件名 STK5C4U332J-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

STK5C4U332J-E 数据表(HTML) 10 Page - ON Semiconductor

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10
Fault output
The FAULT output is an open drain output requiring a
pull-up resistor. If the pull-up voltage is 5 V, use a
pull-up resistor with a value of 6.8 kΩ or higher. If the
pull-up voltage is 15 V, use a pull-up resistor with a
value of 20 kΩ or higher. The FAULT output is
triggered if there is a VDD undervoltage or an
overcurrent condition.
Undervoltage lockout protection
If VDD goes below the VDD supply undervoltage
lockout falling threshold, the FAULT output is
switched on. The FAULT output stays on until VDD
rises above the VDD supply undervoltage lockout
rising threshold. After VDD has risen above the
threshold to enable normal operation, the driver waits
to receive an input signal on the LIN input before
enabling the driver for the HIN signal.
Overcurrent protection
An over-current condition is detected if the voltage on
the ITRIP pin is larger than the reference voltage.
There is a blanking time of typically 350 ns to improve
noise immunity. After a shutdown propagation delay of
typically 0.55
s, the FAULT output is switched on.
The FAULT output is held on for a time determined by
the resistor and capacitor connected to the RCIN pin. If
RCIN pin is unconnected, the internal RC components
set fault clear time to 2 ms (typical).
The over-current protection threshold should be set to
be equal or lower to 2 times the module rated current
(IO).
An additional fuse is recommended to protect against
system level or abnormal over-current fault conditions.
Capacitors on High Voltage and VDD supplies
Both the high voltage and VDD supplies require an
electrolytic capacitor and an additional high frequency
capacitor.
Enable pin
The ENABLE terminal pin is used to enable or shut
down the built-in driver. If the voltage on the ENABLE
pin rises above the ENABLE ON-state voltage, the
output drivers are enabled. If the voltage on the
ENABLE pin falls below the ENABLE OFF-state
voltage, the drivers are disabled.
Minimum input pulse width
When input pulse width is less than 1 μs, an output
may not react to the pulse. (Both ON signal and OFF
signal)
Calculation of bootstrap capacitor value
The bootstrap capacitor value CB is calculated using
the following approach. The following parameters
influence the choice of bootstrap capacitor:
 VBS: Bootstrap power supply.
15 V is recommended.
 QG: Total gate charge of IGBT at VBS = 15 V.
34 nC
 UVLO: Falling threshold for UVLO.
Specified as 12 V.
 IDMAX: High side drive consumption current.
Specified as 0.4 mA
 tONMAX: Maximum ON pulse width of high side
IGBT.
Capacitance calculation formula:
CB = (QG + IDMAX * tONMAX) / (VBS - UVLO)
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. When not using the
bootstrap circuit, each high side driver power supply
requires an external independent power supply.
The internal bootstrap circuit uses a MOSFET. The
turn on time of this MOSFET is synchronized with the
turn on of the low side IGBT. The bootstrap capacitor
is charged by turning on the low side IGBT.
If the low side IGBT is held on for a long period of
time (more than one second for example), the bootstrap
voltage on the high side MOSFET will slowly
discharge.
Figure 13: Bootstrap capacitance versus tONMAX
0.01
0.1
1
10
100
0.1
1
10
100
1000
tONMAX [ms]


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