IR2125 Datasheet PDF - International Rectifier


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IR2125
International Rectifier

Part Number IR2125
Description CURRENT LIMITING SINGLE CHANNEL DRIVER
Page 16 Pages

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Data Sheet No. PD-6.017D
IR2125
CURRENT LIMITING SINGLE CHANNEL DRIVER
Features
n Floating channel designed for bootstrap operation
Fully operational to +500V
Tolerant to negative transient voltage
dV/dt immune
n Gate drive supply range from 12 to 18V
n Undervoltage lockout
n Current detection and limiting loop to limit driven
power transistor current
n Error lead indicates fault conditions and programs
shutdown time
n Output in phase with input
Product Summary
VOFFSET
500V max.
IO+/-
1A / 2A
VOUT
12 - 18V
VCSth
230 mV
ton/off (typ.) 150 & 150 ns
Description
The IR2125 is a high voltage, high speed power
MOSFET and IGBT driver with over-current limit-
ing protection circuitry. Proprietary HVIC and latch
immune CMOS technologies enable ruggedized
monolithic construction. Logic inputs are compat-
ible with standard CMOS or LSTTL outputs. The
output driver features a high pulse current buffer
stage designed for minimum driver cross-conduc-
tion. The protection circuitry detects over-current
in the driven power transistor and limits the gate
drive voltage. Cycle by cycle shutdown is pro-
grammed by an external capacitor which directly
controls the time interval between detection of the
over-current limiting conditions and latched shut-
Package
down. The floating channel can be used to drive an
N-channel power MOSFET or IGBT in the high or
low side configuration which operates up to 500
volts.
Typical Connection
up to 500V
VCC
VCC
VB
IN IN OUT
ERR
CS
COM
VS
TO
LOAD
To Order
CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL B-107



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IR2125
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Absolute Maximum Ratings
Absolute Maximum Ratings indicate sustained limits beyond which damage to the device may occur. All voltage param-
eters are absolute voltages referenced to COM. The Thermal Resistance and Power Dissipation ratings are measured
under board mounted and still air conditions.
Parameter
Value
Symbol
Definition
Min. Max. Units
VB
VS
VHO
VCC
VIN
VERR
VCS
dVs/dt
PD
RθJA
TJ
TS
TL
High Side Floating Supply Voltage
High Side Floating Offset Voltage
High Side Floating Output Voltage
Logic Supply Voltage
Logic Input Voltage
Error Signal Voltage
Current Sense Voltage
Allowable Offset Supply Voltage Transient
Package Power Dissipation @ TA +25°C
Thermal Resistance, Junction to Ambient
Junction Temperature
Storage Temperature
Lead Temperature (Soldering, 10 seconds)
-0.3
VB - 25
VS - 0.3
-0.3
-0.3
-0.3
VS - 0.3
-55
525
VB + 0.3
VB + 0.3
25
VCC + 0.3
VCC + 0.3
VB + 0.3
50
1.0
125
150
150
300
V
V/ns
W
°C/W
°C
Recommended Operating Conditions
The Input/Output logic timing diagram is shown in Figure 1. For proper operation the device should be used within the
recommended conditions. The VS offset rating is tested with all supplies biased at 15V differential.
Symbol
VB
VS
VHO
VCC
VIN
VERR
VCS
TA
Parameter
Definition
High Side Floating Supply Voltage
High Side Floating Offset Voltage
High Side Floating Output Voltage
Logic Supply Voltage
Logic Input Voltage
Error Signal Voltage
Current Sense Signal Voltage
Ambient Temperature
Value
Min. Max.
VS + 12
Note 1
VS + 18
500
VS VB
0 18
0 VCC
0 VCC
VS VB
-40 125
Units
V
°C
Note 1: Logic operational for VS of -5 to +500V. Logic state held for VS of -5V to -VBS.
B-108 CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL
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IR2125
Dynamic Electrical Characteristics
VBIAS (VCC, VBS) = 15V, CL = 3300 pF and TA = 25°C unless otherwise specified. The dynamic electrical characteristics
are measured using the test circuit shown in Figures 3 through 6.
Parameter
Value
Symbol
Definition
Figure Min. Typ. Max. Units Test Conditions
ton Turn-On Propagation Delay
toff Turn-Off Propagation Delay
tsd ERR Shutdown Propagation Delay
tr Turn-On Rise Time
tf Turn-Off Fall Time
tcs CS Shutdown Propagation Delay
terr CS to ERR Pull-Up Propagation Delay
7 — 150 200 ns
8 — 150 190
9 — 1.7 2.2 µs
10 — 43 60 ns
11 — 26 35
12 — 0.7 1.2 µs
13 — 9.0 12
CERR = 270 pF
Static Electrical Characteristics
VBIAS (VCC, VBS) = 15V and TA = 25°C unless otherwise specified. The VIN, VTH and IIN parameters are referenced to
COM. The VO and IO parameters are referenced to VS.
Symbol
VIH
VIL
VCSTH+
VCSTH-
VOH
VOL
ILK
IQBS
IQCC
IIN+
IIN-
ICS+
ICS-
VBSUV+
VBSUV-
VCCUV+
VCCUV-
IERR
IERR+
IERR-
IO+
IO-
Parameter
Definition
Logic “1” Input Voltage
Logic “0” Input Voltage
CS Input Positive Going Threshold
CS Input Negative Going Threshold
High Level Output Voltage, VBIAS - VO
Low Level Output Voltage, VO
Offset Supply Leakage Current
Quiescent VBS Supply Current
Quiescent VCC Supply Current
Logic “1” Input Bias Current
Logic “0” Input Bias Current
“High” CS Bias Current
“Low” CS Bias Current
VBS Supply Undervoltage Positive Going
Threshold
VBS Supply Undervoltage Negative Going
Threshold
VCC Supply Undervoltage Positive Going
Threshold
VCC Supply Undervoltage Negative Going
Threshold
ERR Timing Charge Current
ERR Pull-Up Current
ERR Pull-Down Current
Output High Short Circuit Pulsed Current
Output Low Short Circuit Pulsed Current
To Order
Value
Figure Min. Typ. Max. Units Test Conditions
14 2.2 — — V VCC = 12V to 18V
15 — — 0.8
VCC = 12V to 18V
16 150 230 320
VCC = 12V to 18V
17 130 200 260 mV VCC = 12V to 18V
18 — — 100
IO = 0A
19 — — 100
IO = 0A
20 — — 50
VB = VS = 500V
21 — 400 1000
VIN = VCS = 0V or 5V
22 — 700 1200
VIN = VCS = 0V or 5V
23 — 4.5 10 µA
VIN = 5V
24 — — 1.0
VIN = 0V
25 — 4.5 10
VCS = 3V
26 — — 1.0
VCS = 0V
27 8.5 9.2 10.0
28 7.7 8.3 9.0
V
29 8.3 8.9 9.6
30 7.3 8.0 8.7
31 65 100 130 µA VIN = 5V, VCS = 3V
ERR < VERR+
32 8.0 15 —
VIN = 5V, VCS = 3V
mA ERR > VERR+
33 16 30 —
VIN = 0V
34 1.0 1.6 —
VO = 0V, VIN = 5V
PW 10 µs
A
35 2.0 3.3 —
VO = 15V, VIN = 0V
PW 10 µs
CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL B-109



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IR2125
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Functional Block Diagram
VCC
IN
ERR
COM
UV
DETECT
1.8V
LATCHED
SHUTDOWN
ERROR
TIMING
1.8V
UP
SHIFTERS
HV
LEVEL
SHIFT
UV
DETECT
PULSE
FILTER
R
Q
PRE
DRIVER
R
S
BUFFER
PULSE
GEN
QR
S
PULSE
FILTER
VB
PULSE
GEN
HV
LEVEL
SHIFT
DOWN
SHIFTERS
0.23V
-
+
AMPLIFER
500ns
BLANK
COMPARATOR
VB
HO
VS
CS
Lead Definitions
Lead
Symbol Description
VCC
IN
ERR
Logic and gate drive supply
Logic input for gate driver output (HO), in phase with HO
Serves multiple functions; status reporting, linear mode timing and cycle by cycle logic
shutdown
COM
VB
HO
VS
CS
Logic ground
High side floating supply
High side gate drive output
High side floating supply return
Current sense input to current sense comparator
Lead Assignments
8 Lead DIP
IR2125
Part Number
B-110 CONTROL INTEGRATED CIRCUIT DESIGNERS’ MANUAL
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