Fairchild FAN7842 Half bridge gate driver Datasheet

FAN7842
Half Bridge Gate Driver
Features
Description
■ Floating Channels Designed for Bootstrap Operation to
+200V.
The FAN7842, a monolithic half-bridge gate driver IC, can drive
MOSFETs and IGBTs which operate up to +200V. Fairchild’s
high voltage process and common-mode noise canceling technique provides stable operation of the high-side driver under
high dv/dt noise circumstances. An advanced level shift circuit
allows high-side gate driver operation up to VS=-9.8 V(typ.) for
VBS=15V. The input logic level is compatible with standard TTLseries logic gates. UVLO circuits for both channels prevent malfunction when VCC and VBS are lower than the specified
threshold voltage. Output driver current(source/sink) is typically 350mA/650mA, respectively.
■ Typically 350mA/650mA Sourcing/Sinking Current Driving
Capability for Both Channels
■ Common-Mode dv/dt Noise Canceling Circuit
■ Extended Allowable Negative VS Swing to -9V for Signal
Propagation @ VCC=VBS=15V
■ VCC & VBS Supply Range from 10V to 20V
■ UVLO Functions for Both Channels
■ TTL Compatible Input Logic Threshold Levels
■ Matched Propagation Delay Below 50nsec
8 SOP
■ Output In-phase with Input
Applications
1
■ Half and Full Bridge Converters
■ Current Fed Push-Pull Converters
■ Synchronous Buck Converters
Ordering Information
Part Number
FAN7842M
FAN7842MX
©2006 Fairchild Semiconductor Corporation
FAN7842 Rev.1.0.0
Operating Temp.
Range
Pb-Free
Package
-40°C to +125°C
Yes
8-SOP
1
Packing Method
Tube
Tape & Reel
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FAN7842 Half Bridge Gate Driver
January 2006
FAN7842 Half Bridge Gate Driver
Typical Application Diagram
DB
VC C
U p to 2 0 0 V
8
VC C
C BS
1
2
HIN
3
7
HO
FAN7842
On / Off
Controller
4
C OM
LIN
VB
6
VS
L OAD
5
LO
Internal Block Diagram
High-SideDriver
UVLO
NOISE
CANCELLER
HIN 2
DELAY
R R
Q
S
DRIVER
Level
Shifter
Pulse
Generation
8
VB
7
HO
6
VS
1
VCC
5
LO
4
COM
500kW
Low-Side Driver
UVLO
DELAY
DELAY
500kW
FAN7842 Rev. 1.0.0
2
DRIVER
LIN 3
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FAN7842 Half Bridge Gate Driver
Pin Assignments
1
HIN
2
LIN
3
COM
4
FAN7842
VCC
8
VB
7
HO
6
VS
5
LO
Pin Definitions
Pin Number Pin Name
I/O
VCC
2
HIN
I
Logic Input for High Side Gate Driver Output
3
LIN
I
Logic Input for Low Side Gate Driver Output
4
COM
-
Logic Ground and Low Side Driver Return
5
LO
O
Low Side Driver Output
6
VS
I
High Voltage Floating Supply Return
7
HO
O
High Side Driver Output
8
VB
I
High Side Floating Supply
FAN7842 Rev. 1.0.0
I
Pin Function Description
1
Low Side Supply Voltage
3
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Symbol
Min.
Max.
High side offset voltage
Parameter
VS
VB-25
VB+0.3
High side floating supply voltage
VB
-0.3
225
High side floating output voltage HO
VHO
VS-0.3
VB+0.3
Low side and logic fixed supply voltage
VCC
-0.3
25
Low side output voltage LO
VLO
-0.3
VCC+0.3
VIN
-0.3
VCC+0.3
Logic ground
COM
VCC-25
VCC+0.3
Allowable offset voltage SLEW RATE
dVs/dt
Logic input voltage(HIN, LIN)
Power dissipation
Thermal resistance, junction to ambient
50
Unit
V
V/ns
PD
-
0.625
W
Rthja
-
200
°C/W
Junction temperature
TJ
150
°C
Storage temperature
TS
150
°C
Note:
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters are absolute voltage referenced to COM, all currents are defined positive into any lead.
Recommended Operating Ratings.
Parameter
Symbol
Min.
Max.
VB
VS+10
VS+20
High side floating supply offset voltage
VS
6-VCC
200
High side(HO) output voltage
VHO
VS
VB
Low side(LO) output voltage
VLO
COM
VCC
VCC
High side floating supply voltage
Logic input voltage(HIN, LIN)
Low side supply voltage
Ambient temperature
VIN
COM
VCC
10
20
TA
-40
125
Unit
V
°C
ESD Level
Parameter
Pins
Human Body Model (HBM)
Machine Model (MM)
All Pins
Charged Device Model (CDM)
Conditions
Level
R=1.5kΩ, C=100pF
±2000
C=200pF
±300
Unit
V
±500
Note :
The human body model is a 100pF capacitor discharged through a 1.5k resistor into each pin. Pin6,Pin7 and Pin8 are rated at
±1500V.
FAN7842 Rev. 1.0.0
4
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FAN7842 Half Bridge Gate Driver
Absolute Maximum Ratings
(VBIAS(VCC, VBS)=15.0V, TA = 25°C, unless otherwise specified. The VIN, VTH and IIN parameters are referenced to COM. The VO and IO parameters are referenced to COM and VS is applicable to HO and LO.)
Parameter
Symbol
Condition
VCC and VBS supply under voltage positive going threshold
VCCUV+
VBSUV+
-
VCC and VBS supply under voltage negative going threshold
VCCUVVBSUV-
-
VCC supply under voltage lockout
hysteresis
VCCUVH
VBSUVH
-
Min.
Typ.
Max.
8.2
9.2
10.0
7.6
8.7
9.6
-
0.6
-
Offset supply leakage current
ILK
VB=VS=200V
-
-
10
Quiescent VBS supply current
IQBS
VIN=0V or 5V
-
45
120
Quiescent VCC supply current
IQCC
VIN=0V or 5V
-
70
180
Operating VBS supply current
IPBS
fin=20kHz,rms value
-
-
600
Operating VCC supply current
IPCC
fin=20kHz,rms value
-
-
600
Logic "1" input voltage
VIH
-
2.9
-
-
Logic "0" input voltage
VIL
-
-
-
0.8
High level output voltage,
VBIAS-VO
VOH
-
-
1.0
Low level output voltage, VO
VOL
-
-
0.6
Logic "1" input bias current
IIN+
VIN=5V
-
10
20
Logic "0" input bias current
IIN-
VIN=0V
-
1.0
2.0
Output high short circuit pulse current
IO+
VO=0V, VIN=5V with PW<10us
250
350
-
Output low short circuit pulsed
current
IO-
VO=15V=VB,VIN=0V with PW<10us
500
650
-
Allowable negative VS pin voltage
for HIN signal propagation to HO
VS
-
-
-9.8
-7
Unit
V
uA
uA
V
IO=20mA
uA
mA
V
Dynamic Electrical Characteristics
VBIAS(VCC, VBS)=15.0V, VS=GND, CL=1000pF and TA=25°C, unless otherwise specified.
Parameter
Symbol
Conditions
Min.
Typ. Max.
Turn-on propagation delay
ton
VS=0V
100
170
300
Turn-off propagation delay
toff
VS=0V
100
200
300
Turn-on rise time
tr
-
20
60
140
Turn-off fall time
tf
-
-
30
80
MT
-
-
-
50
Delay matching, HS & LS turn-on/off
FAN7842 Rev.1.0.0
5
Unit
ns
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FAN7842 Half Bridge Gate Driver
Electrical Characteristics
FAN7842 Half Bridge Gate Driver
300
Turn-Off Propagation Delay [nsec]
Turn-On Propagation Delay [nsec]
Typical Performance Characteristics
VCC=VBS
COM=0V
CL=1nF
Ta=25°C
250
High-Side
200
150
Low-Side
100
10
12
14
16
18
300
VCC=VBS=15V
COM=0V
CL=1nF
275
250
High-Side
225
Low-Side
200
175
150
125
-40
20
-20
0
Supply Voltage [V]
40
60
80
100
120
Figure 4. Turn-Off Propagation Delay vs. Temp.
64
300
VCC=VBS=15V
COM=0V
CL=1nF
275
250
225
Turn-On Rising Time [nsec]
Turn-On Propagation Delay [nsec]
Figure 1.Turn-On Propagation Delay vs. Supply
Voltage
High-Side
200
175
Low-Side
150
125
100
75
VCC=VBS
COM=0V
CL=1nF
Ta=25°C
62
60
58
56
54
Low-Side
52
50
High-Side
48
46
44
50
42
-40
-20
0
20
40
60
80
100
120
10
11
12
13
Temperature[°C]
80
75
240
Turn-On Rising Time [nsec]
VCC=VBS
COM=0V
CL=1nF
Ta=25°C
260
High-Side
220
200
Low-Side
180
15
16
17
18
19
20
Figure 5. Turn-On Rising Time vs. Supply
Voltage
300
280
14
Supply Voltage [V]
Figure 2. Turn-On Propagation Delay vs. Temp.
Turn-Off Propagation Delay [nsec]
20
Temperature [°C]
160
140
120
VCC=VBS=15V
COM=0V
CL=1nF
70
65
60
55
50
Low-Side
45
40
35
High-Side
30
25
20
15
10
5
0
100
10
12
14
16
18
20
-40
Supply Voltage [V]
0
20
40
60
80
100
120
Temperature [°C]
Figure 3. Turn-Off Propagation Delay vs. Supply
Voltage
FAN7842 Rev.1.0.0
-20
Figure 6. Turn-On Rising Time vs. Temp.
6
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FAN7842 Half Bridge Gate Driver
Typical Performance Characteristics (Continued)
VCC=VBS
COM=0V
CL=1nF
Ta=25°C
32
30
28
Output Sourcing Current [mA]
Turn-Off Falling Time [nsec]
34
High-Side
26
24
22
Low-Side
20
18
440
VCC=VBS=15V
COM=0V
LO=HO=0V
420
400
380
High-Side
360
Low-Side
340
320
300
280
16
10
11
12
13
14
15
16
17
18
19
-40
20
-20
0
Supply Voltage [V]
50
60
80
100
120
900
VCC=VBS=15V
COM=0V
CL=1nF
45
40
Output Sinking Current [mA]
Turn-Off Falling Time [nsec]
40
Figure 10. Output Sourcing Current vs. Temp.
Figure 7. Turn-Off Falling Time vs. Supply
Voltage
High-Side
35
30
25
Low-Side
20
15
10
-40
-20
0
20
40
60
80
100
VCC=VBS
COM=0V
LO=VCC, HO=VB
Ta=25°C
800
700
Low-Side
High-Side
600
500
400
300
120
10
12
14
16
18
20
Supply Voltage [V]
Temperature [°C]
Figure 8. Turn-Off Falling Time vs. Temp.
Figure 11. Output Sinking Current vs. Temp.
600
850
VCC=VBS
COM=0V
LO=HO=0V
Ta=25°C
550
500
450
Output Sinking Current [mA]
Output Sourcing Current [mA]
20
Temperature [°C]
400
High-Side
350
300
Low-Side
250
200
150
VCC=VBS=15V
COM=0V
LO=VCC, HO=VB
800
750
700
High-Side
650
Low-Side
600
550
500
100
10
12
14
16
18
-40
20
Supply Voltage [V]
0
20
40
60
80
100
120
Temperature [°C]
Figure 9. Output Sourcing Current vs. Supply
Voltage
FAN7842 Rev.1.0.0
-20
Figure 12. Output Sinking Current vs. Temp.
7
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FAN7842 Half Bridge Gate Driver
Typical Performance Characteristics (Continued)
Allowable Negative VS Voltage
for Signal Propagatio to High-Side [V]
95
-4
VCC=VBS
COM=0V
Ta=25°C
-6
VCC=VBS=15V
COM=0V
HIN=LIN=0V
90
85
80
IQCC [uA]
-8
-10
-12
75
70
65
60
-14
55
-16
50
45
-18
10
12
14
16
18
20
-40
-20
0
20
Supply Voltage [V]
-9.0
80
100
120
80
VCC=VBS=15V
COM=0V
-9.2
VCC=15V
COM=0V
HIN=LIN=0V
Ta=25°C
70
60
-9.4
-9.6
-9.8
-10.0
50
40
30
20
-10.2
10
-10.4
-40
-20
0
20
40
60
80
100
0
120
0
5
Temperature [°C]
10
15
20
Supply Voltage [V]
Figure14. Allowable Negative VS Voltage for
Signal Propagation to High Side vs. Tem.
Figure17. IQBS vs. Supply Voltage
100
52
VBS=15V
COM=0V
HIN=LIN=0V
Ta=25°C
VCC=15V
COM=0V
HIN=LIN=0V
50
48
IQBS [uA]
IQCC [uA]
60
Figure16. IQCC vs. Temperature
IQBS [uA]
Allowable Negative VS Voltage
for Signal Propagation to High-Side [V]
Figure13. Allowable Negative VS Voltage for
Signal Propagation to High Side vs. Supply
Voltage
80
40
Temperature [° C]
60
40
46
44
42
40
38
20
36
0
0
5
10
15
-40
20
0
20
40
60
80
100
120
Temperature [°C]
Supply Voltage [V]
Figure18. IQBS vs. Temperature
Figure15. IQCC vs. Supply Voltage
FAN7842 Rev.1.0.0
-20
8
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FAN7842 Half Bridge Gate Driver
Typical Performance Characteristics (Continued)
0.7
VCC=VBS=15V
COM=0V
HIN=LIN=0V
IL=20mA
0.20
0.18
VOL [V]
0.6
VOH [V]
0.22
VCC=VBS
COM=0V
HIN=LIN=5V
IL=20mA
Ta=25°C
0.5
High-Side
0.4
High-Side
0.16
Low-Side
0.14
Low-Side
0.12
0.3
0.10
0.2
10
12
14
16
18
-40
20
-20
0
20
Figure 19. High Level Output Voltage vs. Supply
Voltage
60
80
100
120
Figure 22. Low Level Output Voltage vs. Temp.
40
0.60
VCC=VBS=15V
COM=0V
HIN=LIN=5V
IL=20mA
0.50
30
0.45
Low-Side
0.40
High-Side
25
15
10
0.30
5
0.25
0
-20
0
20
40
60
80
100
IN+
20
0.35
-40
VCC=VBS
COM=0V
IN=VCC or IN=0V
Ta=25°C
35
IN+/IN- [uA]
0.55
VOH [V]
40
Temperature [°C]
Supply Voltage [V]
IN0
120
5
10
15
20
Supply Voltage [V]
Temperature [°C]
Figure 23. Input Bias Current vs. Supply Voltage
Figure 20. High Level Output Voltage vs. Temp.
16
0.18
VCC=VBS
COM=0V
HIN=LIN=0V
IL=20mA
Ta=25°C
0.16
0.15
12
IN+ [uA]
VOL [V]
0.17
HIN=LIN=5V
14
High-Side
LIN
10
HIN
8
0.14
Low-Side
6
0.13
0.12
4
10
12
14
16
18
20
-40
Supply Voltage [V]
0
20
40
60
80
100
120
Temperature [° C]
Figure 24. Input Bias Current vs. Temp.
Figure 21. Low Level Output Voltage vs. Supply
Voltage
FAN7842 Rev.1.0.0
-20
9
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FAN7842 Half Bridge Gate Driver
Typical Performance Characteristics (Continued)
Input Logic Threshold Voltage [V]
10.0
VCCUV+/VCCUV- [V]
9.8
9.6
VCCUV+
9.4
9.2
9.0
VCCUV-
8.8
8.6
8.4
8.2
8.0
-40
-20
0
20
40
60
80
100
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
VIH(LIN)
VIH(HIN)
VIL(LIN)
VIL(HIN)
-40
120
VCC=VBS=15V
COM=0V
-20
0
20
40
60
80
100
120
Temperature [°C]
Temperature [°C]
Figure 25. VCC UVLO Threshold Voltage vs.
Temp.
Figure 28. Input Logic Threshold Voltage vs.
Temp.
10.0
VBSUV+/VBSUV- [V]
9.8
9.6
VBSUV+
9.4
9.2
9.0
VBSUV-
8.8
8.6
8.4
8.2
8.0
-40
-20
0
20
40
60
80
100
120
Temperature [° C]
Figure 26. VBS UVLO Threshold Voltage vs.
Temp.
5
VB-to-COM =200V
ILK [uA]
4
3
2
1
0
-40
-20
0
20
40
60
80
100
120
Temperature [°C]
Figure 27. VB to COM Leakage Current vs.
Temp.
FAN7842 Rev.1.0.0
10
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100nF 10µF
100nF 10µF
1
VCC
15Vdc
8
VB
4 COM
VS 6
2 HIN
HO 7
50%
HIN
LIN
15Vdc
1nF
LO
50%
10%
3 LIN
LO 5
FAN7842
t off- H
t off- L
ton-H
ton-L
1nF
MT
HO
90%
LO
MT
Figure 29. Switching Time Test Circuit
HO
Figure 32. Delay Matching Waveform Definition
HIN
LIN
HO
LO
Figure 30. Input / Output Timing Diagram
HIN
LIN
t on : Turn-on Delay Time
t off : Turn-off Delay Time
t r : Turn-on Rise Time
t f : Turn-off Fall Time
50%
t on
to f f
tr
90%
HO
LO
10%
50%
tf
90%
10%
Figure 31. Switching Time Waveform Definitions
FAN7842 Rev.1.0.0
11
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FAN7842 Half Bridge Gate Driver
Applications Information
Dimemsions in millimeters
8-SOP
FAN7842 Rev. 1.0.0
12
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FAN7842 Half Bridge Gate Driver
Mechanical Dimensions
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PRODUCT STATUS DEFINITIONS
Definition of Terms
Datasheet Identification
Product Status
Definition
Advance Information
Formative or
In Design
This datasheet contains the design specifications for
product development. Specifications may change in
any manner without notice.
Preliminary
First Production
This datasheet contains preliminary data, and
supplementary data will be published at a later date.
Fairchild Semiconductor reserves the right to make
changes at any time without notice in order to improve
design.
No Identification Needed
Full Production
This datasheet contains final specifications. Fairchild
Semiconductor reserves the right to make changes at
any time without notice in order to improve design.
Obsolete
Not In Production
This datasheet contains specifications on a product
that has been discontinued by Fairchild semiconductor.
The datasheet is printed for reference information only.
Rev. I17
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