TX-K841/K841L IGBT Driver HIC

Block Diagram

Features

  • An IGBT driver for 300A/1200V or 600A/600V
  • Improved EXB841. Replace directly. Less delay time, higher work frequency.
  • Use only one single power supply. A negative power supply generated by driver itself which reduce the external devices.
  • K841 and K841L have same build-in overcurrent protection circuit. Besides, K841L can block input PWM signal when IGBT is short-circuit, ensure that the soft shutdown can be effectively carried out.

Application

  • To drive IGBT for Inverter, Servo systems, Uninterrupted power supply (UPS), Welding applications.

Dimensions ( mm )

Electrical Characteristics(Ta=25℃, Vp=20V, Fop=50KHz, CL=100nF, unless otherwise stated)

Parameter

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Supply Voltage Vp  
19
20
21
V
Standby Current Iio CL=0
 
12
 
mA
Supply Current

Iil

CL=100n  
100
 

Input Signal Current Peak Value

Ipwm

8

10

13
mA

Output Voltage

Voh

Rg=2Ω
CL=100nF

14.5

V

Vol

-4.5

Output Current

Iohp

Fop=20KHz
Ton=2μS

 

6

 
A

Iolp

 

-6

 

Output Charge

Qout

   

2000

2800

nC

Isolation Voltage

VISO

50Hz/1 min

 

2500

 

Vrms

Operation Frequency

Fop

 

0

 

60

KHz

Duty Cycle δ  
0
 
100
Minimum Pulse Width Tonmin CL=100nF  
0.8
μS

Rise Delay

Trd

Rg=2Ω,Ipwm=10mA  

0.2

0.5

μS

Fall Delay

Tfd

 

0.3

0.6

Rise Time

Tr

Rg=2Ω,CL=100nF  

0.5

0.7

Fall Time

Tf

 

0.5

0.7

Protective Threshold

Vn  

8.5

V

Blind Time Tblind  

2.5

μS
Soft Shutdown Time Tsoft  
10
μS

Output Fault Signal Current

Iflt    
10
20
mA
Fault Signal Delay Tflt    
50
 
nS

Operation Temperature

Top

 

-30

 

90

Storage Temperature

Tst

 

-50

 

120

Application Circuit:

Notes:
1. Filter capacitor Cc, Ce and Cp are 22-47 μ F of electrolytic capacitor, each one are paralleled with a 0.22 μ F or more CBB capacitors. All capacitor >=25V.
2. Rg = 2.2 - 15 Ω; Rge>=4K7/0.25W 。
3. EXB841 can be replaced with K841/K841L directly in existing circuit. Optocoupler current input signal should be about 10 mA.

Reminded : Beware output short circuit between pin 3 and pin 1.

Pins Descriptions:
1: Ground reference of driver circuit, connected to the emitter of IGBT.
2: Positive port of power supply Vp.
3: Output port of driver, connected to the gate of IGBT.
4: Not used.
5: Output port of fault signal.
6: IGBT current detect port, connected to the collector of IGBT.
7,8: Not used.
9: Negative port of power supply Vp.
10,11,12,13: Not used.
14,15: Input signal.