STK621-041 データシートの表示（PDF） - SANYO -> Panasonic

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STK621-041

Air Conditioner Three-Phase Compressor Motor Driver IMST Inverter Power Hybrid IC

SANYO -> Panasonic 

STK621-041,621-041A-E

Precautions

1. The control power supply can be driven by a single power supply by connecting a bootstrap diode: DB (use a high-

speed diode with a short trr and a withstand voltage of 600V or more) and a capacitor: CB (approximately 1 to 47µF).

In this case, CB is charged by setting the lower-side device to ON (Low output). Note that a large charging current

flows during startup and in other cases when the CB voltage is low, and may cause adverse effects such as noise. Be

sure to connect a limiting resistor: RB (approximately several Ω to several tens of Ω).

(When not using the bootstrap method, each upper-side control power supply should be externally supplied by an

independent power supply.)

In addition, the upper-side control voltage may be insufficient depending on the control signal input status, so this

should be checked.

2. Fluctuating spike voltage may be generated during switching operation due to the effects of the floating inductance of

the + and - pin power supply external wiring or other factors. Therefore, use a short wiring length (between CI and

each pin) to reduce the wiring inductance, and take measures to suppress surge voltage such as connecting a snubber

circuit (capacitor: CS, approximately 0.1 to 10µF) for absorbing voltage surges as close as possible between the +

and - pins.

3. The ISO pin (pin 20) is the current monitor pin. Note that overcurrent protection is disabled when the ISO pin and the

VSS pin are shorted.

4. The FAULT pin is an open drain output (FAULT operation when Low). When pulling up the FAULT pin, use 5.6kΩ

or more.

5. A 5V (5.0 to 5.4V) Zener diode is connected inside the signal input pins. When inputting voltage in excess of 5V,

connect a resistor between the power supply side and the signal input pin so that the input current to the signal input

pin is 0.5mA or less. This resistor is also effective for absorbing noise.

6. The overcurrent protection function is valid only when circuit control can be performed normally. Be sure to provide

a fuse in the VCC line or otherwise ensure safety in the set design.

7. The IC may become damaged or rupture if the motor connection pins (pins 2, 5 and 8) are open during motor rotation.

Take special care for the connections (soldered condition) of these pins.

No. A0483-11/13

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