STK621-140B-E
No. A1033-7/8
Recommended Operating Conditions
Parameters Symbol Conditions min typ max unit
Supply voltage VCC + - - 0 280 400 V
VD1, 2, 3 VB1-U, VB2-V, VB3-W 12.5 15 17.5
Pre-driver supply voltage VD4 VDD-VSS *1 13.5 15 16.5 V
ON input signal voltage VIN (ON) 0 0.3V
OFF input signal voltage VIN (OFF)
HIN1, HIN2, HIN3, LIN1, LIN2, LIN3-VSS
terminal 3.5 5 V
PWM frequency fPWM 1 20 kHz
Dead time DT Upper/lower input signal downtime 2 μs
Tightening torque MT ‘M3’ type screw 0.8 1.0 N•m
*1 Pre-driver power supply (VD4=15±1.5V) must have the capacity of IO=20mA (DC), 0.5A (Peak).
Precautions
1. A control power supply can be driven with one power supply by attaching the capacitor CB (1 to 47μF) for a
bootstrap. In this case, a bottom element is made to charge.
(When not using bootstrap circuit, each upper side pre-drive power supply needs an independent power supply.
Externally set.)
Moreover, since top power supply voltage may be insufficient depending on the control method, Please carry out a
check with the system.
2. Because the jump voltage which is accompanied by the vibration in case of switching operation occurs by the
influence of the floating inductance of the wiring of the outer power supply which is connected with of the + terminal
and the – terminal, restrains and spares serge voltage being as the connection of the snubber circuit (Capacitor / CS /
about 0.1 to 10μF) for the voltage absorption with the neighborhood as possible between + and the - terminal, and so
on, with making a wiring length (among the terminals each from CI) short and making a wiring inductance small.
3. ISO terminal (22pin) is for the electric current monitor.
Note that the overcurrent protection circuit is disabled when the ISO terminal is shorted with the VSS terminal.
4. Output form of the FAULT terminal is open DRAIN (it is operating as FAULT when becoming low).
When pulling up the pin with a resistor, connect the resistor with a resistance of 5.6kΩ or more.
5. Zener diode with 5V (5.0 to 5.4V) is connected with the inside of the signal input terminal. When inputting the
voltage which exceeds 5V, connect resistor to between the side of the power and the signal input terminal, for the
input current of the signal input terminal become equal to or less than 0.5mA.
This resistor is effective with the noise absorption of the signal terminal, too.
6. The over current protection feature operates only when it is possible to do a circuit control normally. For the safety,
put a fuse, and so on in the VCC line.
7. A thermistor is connected between the VTH terminal (pin 13) and VSS terminal (pin 23) inside the IC. The sub s trate
temperature can be monitored by connecting an external pull-up resistor (RP). Connect the resistor with a resistance
of 10kΩ or more when the pull-up vol t age ( VP) is 5V and 39 kΩ or more when the VP is 15V.
8. Because the IC sometimes destroys and bursts when mo tor connection terminal (2pin, 5pin, 8pin) becomes open
while the motor turns, especially, be careful of the connection (the sold ering condition) of this terminal.
* This data shows the example of the application circuit, does not guarantee a design as the mass production set.