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IR2108 Schematic ( PDF Datasheet ) - International Rectifier

Teilenummer IR2108
Beschreibung HALF-BRIDGE DRIVER
Hersteller International Rectifier
Logo International Rectifier Logo 




Gesamt 23 Seiten
IR2108 Datasheet, Funktion
www.DataSheet4U.com
Data Sheet No. PD60161-R
IR2108(4) (S) & (PbF)
Features
HALF-BRIDGE DRIVER
Floating channel designed for bootstrap operation
Fully operational to +600V
Tolerant to negative transient voltage
Packages
dV/dt immune
8-Lead SOIC
14-Lead SOIC
Gate drive supply range from 10 to 20V
IR2108S
IR21084S
Undervoltage lockout for both channels
3.3V, 5V and 15V input logic compatible
Cross-conduction prevention logic
Matched propagation delay for both channels
14-Lead PDIP
IR21084
High side output in phase with HIN input
8-Lead PDIP
Low side output out of phase with LIN input
IR2108
Logic and power ground +/- 5V offset.
Internal 540ns dead-time, and
programmable up to 5us with one
2106/2301//2108//2109/2302/2304 Feature Comparison
external RDT resistor (IR21084)
Lower di/dt gate driver for better
noise immunity
Available in Lead-Free
Description
The IR2108(4)(S) are high voltage, high speed
power MOSFET and IGBT drivers with depen-
dent high and low side referenced output
channels. Proprietary HVIC and latch immune
Part
2106/2301
21064
2108
21084
2109/2302
21094
2304
Input
logic
HIN/LIN
HIN/LIN
IN/SD
HIN/LIN
Cross-
conduction
prevention
logic
no
yes
yes
yes
Dead-Time
none
Internal 540ns
Programmable 0.54~5 µs
Internal 540ns
Programmable 0.54~5 µs
Internal 100ns
Ground Pins
COM
VSS/COM
COM
VSS/COM
COM
VSS/COM
COM
CMOS technologies enable ruggedized monolithic construction. The logic input is compatible with standard CMOS
or LSTTL output, down to 3.3V logic. The output drivers feature a high pulse current buffer stage designed for
minimum driver cross-conduction. The floating channel can be used to drive an N-channel power MOSFET or
IGBT in the high side configuration which operates up to 600 volts.
Typical Connection
VCC
VCC
VB
HIN HIN HO
LIN LIN VS
COM
LO
up to 600V
TO
LOAD
IR2108
(Refer to Lead Assignments for correct pin
configuration). This/These diagram(s) show
electrical connections only. Please refer to our
Application Notes and DesignTips for proper
circuit board layout.
VCC
HIN
LIN
V SS
HO
VCC
VB
HIN VS
LIN
DT
RDT
VSS COM
LO
IR21084
up to 600V
TO
LOAD
www.irf.com
1






IR2108 Datasheet, Funktion
IR2108(4) (S) & (PbF)
HIN
LIN
HO
LO
Figure 1. Input/Output Timing Diagram
LIN
50%
50%
ton
LO
tr
90%
toff
90%
tf
10%
10%
HIN 50%
LIN
50%
90%
HO DTLO-HO 10%
LO 90%
DTHO-LO
MDT= DTLO-HO
10%
- DTHO-LO
Figure 3. Deadtime Waveform Definitions
6
HIN
50%
50%
ton tr
toff tf
90%
90%
HO 10% 10%
Figure 2. Switching Time Waveform Definitions
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6 Page









IR2108 pdf, datenblatt
IR2108(4) (S) & (PbF)
500
400
300
200
100
Max .
0
0 100 200 300 400 500
VB Boost Voltage (V)
600
Figure 13B. Offset Supply Leakage Current
vs. Tem perature
400
300
200
100
Max .
T yp.
Mi n.
0
-50 -25
0 25 50 75 100 125
Temperature (oC)
Figure 14A. VBS Supply Current
vs. Tem perature
400
300
200
100 Max.
T yp.
Mi n.
0
10
12 14 16 18
VBS Supply Voltage (V)
Figure 14B. VBS Supply Current
vs. Supply Voltage
20
12
3.0
2.5
2.0
Max.
1.5
T yp.
1.0
0.5 Min.
0.0
-50 -25
0 25 50 75 100 125
Temperature (oC)
Figure 15A. VCC Supply Current
vs. Tem perature
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12 Page





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