STGIPL35K120L1

Electrical characteristics

Doc ID 022751 Rev 4

11/19

3.2

Recommendations

●

As the IPM may be used in a very noisy environment, care should be taken to decouple

the supplies. Small ceramic capacitors, connected inside the IPM as close as possible

to the gate driver pins, are used to improve noise-withstand capability.

●

The IPM is compatible with both pulse transformers or optocouplers. When using an

optocoupler, the IN input must be limited to approximately 5 V. The pull-up resistor to

optional filtering capacitor can be added in the event of a highly noisy environment,

although the IPM already includes a filtering on input signals and rejects signals

●

middle point provides decoupling of the 2.5 V reference, and also ensures a high level

on the IN input pin at power-up to start the IPM in OFF state. The waveform from the

ON the IPM outputs, the input signal must be lower than 0.8 V for at least 220 ns.

Conversely, the input signal must be higher than 4.2 V for at least 200 ns to turn OFF

the outputs. A pulse width of about 500 ns at these threshold levels is recommended. In

all cases, the input signal at the IN pin must be between 0 and 5 V.

●

To prevent the input signals oscillation, the wiring of each input should be as short as

possible.

●

Electrolytic bus capacitors should be mounted as close to the module bus terminals as

possible. Additional high frequency ceramic capacitor mounted close to the module

pins will further improve performance.

●

When setting the maximum voltage to be applied between P-N, the internal stray

inductance and the maximum di/dt should be considered. Due to both internal and

layout stray inductances, the di/dt results in a voltage surges between the DC-link

capacitor and the switches during commutations.

●

FAULT pin is externally available to provide a feedback signal about IPM status. Please

refer to undervoltage protection and desaturation fault timing diagrams for more

information. Fault output signals the undervoltage state and is reset only when

undervoltage state disappears. When a desaturation event occurs, the fault output is

pulled down and IPM outputs are low (IGBT off) until the IN input signal is released

(high level), then activated again (low level).

Obsolete

Product(s)

- Obsolete

Product(s)