IRF7834 [INFINEON]
HEXFET Power MOSFET; HEXFET功率MOSFET
| 型号： | IRF7834 |
| 厂家： | 
Infineon |
| 描述： | HEXFET Power MOSFET |
| 文件： | 总10页 (文件大小：208K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PD - 94761
IRF7834
HEXFET® Power MOSFET
Applications
l Synchronous MOSFET for Notebook
Processor Power
VDSS
30V
RDS(on) max
Qg (typ.)
29nC
4.5m:@VGS = 10V
l Synchronous Rectifier MOSFET for
Isolated DC-DC Converters in
Networking Systems
A
A
1
8
S
D
Benefits
2
7
S
D
l Very Low RDS(on) at 4.5V VGS
l Ultra-Low Gate Impedance
l Fully Characterized Avalanche Voltage
and Current
3
6
S
D
4
5
G
D
SO-8
Top View
l 20V VGS Max. Gate Rating
Absolute Maximum Ratings
Parameter
Max.
30
Units
V
VDS
Drain-to-Source Voltage
Gate-to-Source Voltage
Continuous Drain Current, VGS @ 10V
Continuous Drain Current, VGS @ 10V
Pulsed Drain Current
V
± 20
19
GS
I
I
I
@ TA = 25°C
D
D
@ TA = 70°C
16
A
160
2.5
1.6
DM
Power Dissipation
P
P
@TA = 25°C
@TA = 70°C
W
D
D
Power Dissipation
Linear Derating Factor
Operating Junction and
0.02
W/°C
°C
T
-55 to + 150
J
T
Storage Temperature Range
STG
Thermal Resistance
Parameter
Junction-to-Drain Lead
Junction-to-Ambient
Typ.
–––
Max.
20
Units
°C/W
RθJL
RθJA
–––
50
Notes through ꢀ are on page 10
www.irf.com
1
2/26/04
IRF7834
Static @ TJ = 25°C (unless otherwise specified)
Parameter
Drain-to-Source Breakdown Voltage
Min. Typ. Max. Units
30 ––– –––
Conditions
VGS = 0V, ID = 250µA
BVDSS
V
∆ΒVDSS/∆TJ
RDS(on)
Breakdown Voltage Temp. Coefficient ––– 0.023 ––– V/°C Reference to 25°C, ID = 1mA
Static Drain-to-Source On-Resistance
–––
–––
1.35
3.6
4.4
–––
4.5
5.5
V
GS = 10V, ID = 19A
VGS = 4.5V, ID = 16A
VDS = VGS, ID = 250µA
mΩ
VGS(th)
∆VGS(th)
IDSS
Gate Threshold Voltage
2.25
V
Gate Threshold Voltage Coefficient
Drain-to-Source Leakage Current
––– - 5.2 ––– mV/°C
–––
–––
–––
–––
85
–––
–––
–––
1.0
150
100
µA VDS = 24V, VGS = 0V
VDS = 24V, VGS = 0V, TJ = 125°C
IGSS
Gate-to-Source Forward Leakage
Gate-to-Source Reverse Leakage
Forward Transconductance
Total Gate Charge
nA
S
V
V
GS = 20V
GS = -20V
––– -100
gfs
–––
29
–––
44
VDS = 15V, ID = 16A
Qg
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
Qgs1
Qgs2
Qgd
Qgodr
Qsw
Qoss
td(on)
tr
Pre-Vth Gate-to-Source Charge
Post-Vth Gate-to-Source Charge
Gate-to-Drain Charge
7.5
2.7
9.8
9.0
12.5
19
–––
–––
–––
–––
–––
–––
–––
–––
–––
–––
VDS = 15V
nC VGS = 4.5V
ID = 16A
Gate Charge Overdrive
See Fig. 16
Switch Charge (Qgs2 + Qgd)
Output Charge
nC
V
V
DS = 16V, VGS = 0V
Turn-On Delay Time
Rise Time
13.7
14.3
18
DD = 15V, VGS = 4.5V
ID = 16A
ns Clamped Inductive Load
td(off)
tf
Turn-Off Delay Time
Fall Time
5.0
Ciss
Coss
Crss
Input Capacitance
Output Capacitance
Reverse Transfer Capacitance
––– 3710 –––
V
V
GS = 0V
–––
–––
810
350
–––
–––
pF
DS = 15V
ƒ = 1.0MHz
Avalanche Characteristics
Parameter
Single Pulse Avalanche Energy
Typ.
–––
–––
Max.
Units
mJ
EAS
IAR
25
16
Avalanche Current
A
Diode Characteristics
Parameter
Min. Typ. Max. Units
Conditions
IS
Continuous Source Current
–––
–––
3.1
MOSFET symbol
(Body Diode)
A
showing the
ISM
Pulsed Source Current
–––
–––
160
integral reverse
(Body Diode)
p-n junction diode.
VSD
trr
Diode Forward Voltage
–––
–––
–––
–––
21
1.0
32
20
V
T = 25°C, I = 16A, V = 0V
J S GS
Reverse Recovery Time
Reverse Recovery Charge
ns T = 25°C, I = 16A, VDD = 15V
J F
Qrr
di/dt = 100A/µs
13
nC
2
www.irf.com
IRF7834
1000
100
10
1000
100
10
VGS
10V
VGS
10V
TOP
TOP
4.5V
3.8V
3.5V
3.3V
3.0V
2.8V
4.5V
3.8V
3.5V
3.3V
3.0V
2.8V
BOTTOM 2.5V
BOTTOM 2.5V
2.5V
2.5V
1
> 60µs PULSE WIDTH
Tj = 25°C
> 60µs PULSE WIDTH
Tj = 150°C
1
0.1
0.1
1
10
100
0.1
1
10
100
V
, Drain-to-Source Voltage (V)
V
, Drain-to-Source Voltage (V)
DS
DS
Fig 1. Typical Output Characteristics
Fig 2. Typical Output Characteristics
1.5
1000.00
100.00
I
= 20A
D
V
= 10V
GS
T
= 150°C
J
10.00
1.00
0.10
0.01
1.0
T
= 25°C
J
V
= 10V
DS
> 60µs PULSE WIDTH
0.5
2.0
3.0
4.0
-60 -40 -20
T
0
20 40 60 80 100 120 140 160
V
, Gate-to-Source Voltage (V)
GS
, Junction Temperature (°C)
J
Fig 3. Typical Transfer Characteristics
Fig 4. Normalized On-Resistance
Vs. Temperature
www.irf.com
3
IRF7834
100000
V
12
10
8
= 0V,
= C
f = 1 MHZ
GS
I = 16A
D
V
= 24V
C
C
C
+ C , C
SHORTED
DS
VDS= 15V
iss
gs
gd
ds
= C
rss
oss
gd
= C + C
ds
gd
10000
1000
100
Ciss
6
4
Coss
Crss
2
0
0
10
20
30
40
50
60
70
1
10
, Drain-to-Source Voltage (V)
100
Q
Total Gate Charge (nC)
G
V
DS
Fig 6. Typical Gate Charge Vs.
Fig 5. Typical Capacitance Vs.
Gate-to-Source Voltage
Drain-to-Source Voltage
1000.0
1000
100
10
OPERATION IN THIS AREA
LIMITED BY R (on)
DS
100.0
10.0
1.0
T
= 150°C
J
T
= 25°C
1
J
100µsec
Tc = 25°C
Tj = 150°C
1msec
V
= 0V
Single Pulse
GS
10msec
0.1
0.1
0
1
10
100
1000
0.2
0.4
0.6
0.8
1.0
1.2
V
, Drain-toSource Voltage (V)
V
, Source-to-Drain Voltage (V)
DS
SD
Fig 8. Maximum Safe Operating Area
Fig 7. Typical Source-Drain Diode
Forward Voltage
4
www.irf.com
IRF7834
20
16
12
8
2.2
1.8
1.4
1.0
I
= 250µA
D
4
0
25
50
75
100
125
150
-75 -50 -25
0
25
50
75 100 125 150
T
J
, Junction Temperature (°C)
T , Temperature ( °C )
J
Fig 10. Threshold Voltage Vs. Temperature
Fig 9. Maximum Drain Current Vs.
Case Temperature
100
D = 0.50
10
1
0.20
0.10
0.05
0.02
0.01
R1
R1
R2
R2
R3
R3
R4
R4
Ri (°C/W) τi (sec)
1.1659
9.9439
25.520
13.380
0.000184
0.153919
1.7486
49
τ
τ
J τJ
Cτ
0.1
τ
1τ1
τ
τ
τ
2τ2
3τ3
4τ4
Ci= τi/Ri
SINGLE PULSE
( THERMAL RESPONSE )
0.01
0.001
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthja + Tc
1E-006
1E-005
0.0001
0.001
0.01
0.1
1
10
100
t
, Rectangular Pulse Duration (sec)
1
Fig 11. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient
www.irf.com
5
IRF7834
20
16
12
8
100
80
60
40
20
0
I
= 20A
I
D
D
TOP
5.9A
6.7A
16A
BOTTOM
T
= 125°C
= 25°C
J
4
T
J
0
2.0
4.0
6.0
8.0
10.0
25
50
75
100
125
150
V
, Gate-to-Source Voltage (V)
GS
Starting T , Junction Temperature (°C)
J
Fig 12. On-Resistance Vs. Gate Voltage
Fig 13c. Maximum Avalanche Energy
Vs. Drain Current
15V
LD
VDS
DRIVER
+
L
V
DS
+
-
VDD
D.U.T
AS
R
G
V
DD
-
D.U.T
I
A
V
GS
VGS
0.01Ω
t
p
Pulse Width < 1µs
Duty Factor < 0.1%
Fig 13a. Unclamped Inductive Test Circuit
Fig 14a. Switching Time Test Circuit
VDS
V
(BR)DSS
t
p
90%
10%
VGS
td(on)
td(off)
tr
tf
I
AS
Fig 14b. Switching Time Waveforms
Fig 13b. Unclamped Inductive Waveforms
6
www.irf.com
IRF7834
Driver Gate Drive
P.W.
P.W.
D =
Period
D.U.T
Period
+
*
=10V
V
GS
Circuit Layout Considerations
• Low Stray Inductance
• Ground Plane
• Low Leakage Inductance
Current Transformer
-
D.U.T. I Waveform
SD
+
-
Reverse
Recovery
Current
Body Diode Forward
Current
-
+
di/dt
D.U.T. V Waveform
DS
Diode Recovery
dv/dt
V
DD
VDD
Re-Applied
Voltage
• dv/dt controlled by RG
• Driver same type as D.U.T.
• ISD controlled by Duty Factor "D"
• D.U.T. - Device Under Test
RG
+
-
Body Diode
Forward Drop
Inductor Curent
I
SD
Ripple ≤ 5%
* VGS = 5V for Logic Level Devices
Fig 15. Peak Diode Recovery dv/dt Test Circuit for N-Channel
HEXFET® Power MOSFETs
Id
Current Regulator
Vds
Same Type as D.U.T.
Vgs
50KΩ
.2µF
.3µF
12V
+
V
DS
D.U.T.
-
Vgs(th)
V
GS
3mA
I
I
D
G
Qgs1
Qgs2
Qgd
Qgodr
Current Sampling Resistors
Fig 17. Gate Charge Waveform
Fig 16. Gate Charge Test Circuit
www.irf.com
7
IRF7834
Power MOSFET Selection for Non-Isolated DC/DC Converters
Synchronous FET
Control FET
The power loss equation for Q2 is approximated
by;
Special attention has been given to the power losses
in the switching elements of the circuit - Q1 and Q2.
Power losses in the high side switch Q1, also called
the Control FET, are impacted by the Rds(on) of the
MOSFET, but these conduction losses are only about
one half of the total losses.
P = P
+ P + P*
drive output
loss
conduction
P = Irms 2 × Rds(on)
loss ( )
Power losses in the control switch Q1 are given
by;
+ Q × V × f
(
)
g
g
Qoss
Ploss = Pconduction+ Pswitching+ Pdrive+ Poutput
+
×V × f + Q × V × f
in rr in
(
)
2
This can be expanded and approximated by;
*dissipated primarily in Q1.
P
= I 2 × Rds(on)
(
)
loss
rms
For the synchronous MOSFET Q2, Rds(on) is an im-
portant characteristic; however, once again the im-
portance of gate charge must not be overlooked since
it impacts three critical areas. Under light load the
MOSFET must still be turned on and off by the con-
trol IC so the gate drive losses become much more
significant. Secondly, the output charge Qoss and re-
verse recovery charge Qrr both generate losses that
are transfered to Q1 and increase the dissipation in
that device. Thirdly, gate charge will impact the
MOSFETs’ susceptibility to Cdv/dt turn on.
Qgd
ig
Qgs2
ig
+ I ×
× V × f + I ×
× V × f
in
in
+ Q × V × f
(
Qoss
)
g
g
+
×V × f
in
2
This simplified loss equation includes the terms Qgs2
The drain of Q2 is connected to the switching node
of the converter and therefore sees transitions be-
tween ground and Vin. As Q1 turns on and off there is
a rate of change of drain voltage dV/dt which is ca-
pacitively coupled to the gate of Q2 and can induce
a voltage spike on the gate that is sufficient to turn
the MOSFET on, resulting in shoot-through current .
The ratio of Qgd/Qgs1 must be minimized to reduce the
potential for Cdv/dt turn on.
and Qoss which are new to Power MOSFET data sheets.
Qgs2 is a sub element of traditional gate-source
charge that is included in all MOSFET data sheets.
The importance of splitting this gate-source charge
into two sub elements, Qgs1 and Qgs2, can be seen from
Fig 16.
Qgs2 indicates the charge that must be supplied by
the gate driver between the time that the threshold
voltage has been reached and the time the drain cur-
rent rises to Idmax at which time the drain voltage be-
gins to change. Minimizing Qgs2 is a critical factor in
reducing switching losses in Q1.
Qoss is the charge that must be supplied to the out-
put capacitance of the MOSFET during every switch-
ing cycle. Figure A shows how Qoss is formed by the
parallel combination of the voltage dependant (non-
linear) capacitances Cds and Cdg when multiplied by
the power supply input buss voltage.
Figure A: Qoss Characteristic
8
www.irf.com
IRF7834
SO-8 Package Details
INCHES
MILLIME T E RS
DIM
A
D
B
MIN
.0532
MAX
.0688
.0098
.020
MIN
1.35
0.10
0.33
0.19
4.80
3.80
MAX
1.75
0.25
0.51
0.25
5.00
4.00
5
A
A1 .0040
b
c
D
E
.013
8
1
7
2
6
3
5
4
.0075
.189
.0098
.1968
.1574
6
H
E
0.25 [.010]
A
.1497
e
.050 BASIC
1.27 BASIC
0.635 BASIC
e1 .025 BASIC
H
K
L
.2284
.0099
.016
0°
.2440
.0196
.050
8°
5.80
0.25
0.40
0°
6.20
0.50
1.27
8°
e
6X
y
e1
A
K x 45°
A
C
y
0.10 [.004]
8X c
A1
B
8X L
8X b
0.25 [.010]
7
C
F OOT PRINT
8X 0.72 [.028]
NOTES:
1. DIMENSIONING& TOLERANCINGPER ASME Y14.5M-1994.
2. CONTROLLINGDIMENSION: MILLIMETER
3. DIMENSIONS ARE SHOWN IN MILLIMETERS [INCHES].
4. OUTLINE CONFORMS TO JEDEC OUTLINE MS-012AA.
5
6
7
DIMENSION DOES NOT INCLUDE MOLD PROTRUSIONS.
MOLD PROTRUSIONS NOT TO EXCEED 0.15 [.006].
6.46 [.255]
DIMENSION DOES NOT INCLUDE MOLD PROTRUSIONS.
MOLD PROTRUSIONS NOT TO EXCEED 0.25 [.010].
DIMENSION IS THE LENGTH OF LEAD FOR SOLDERING TO
A S UB S T R AT E .
3X 1.27 [.050]
8X 1.78 [.070]
SO-8 Part Marking
EXAMPLE: THIS IS AN IRF7101 (MOSFET)
DATE CODE (YWW)
Y = LAST DIGIT OF THE YEAR
WW = WEEK
YWW
XXXX
F7101
LOT CODE
INTERNATIONAL
RECTIFIER
LOGO
PART NUMBER
www.irf.com
9
IRF7834
SO-8 Tape and Reel
TERMINAL NUMBER 1
12.3 ( .484 )
11.7 ( .461 )
8.1 ( .318 )
7.9 ( .312 )
FEED DIRECTION
NOTES:
1. CONTROLLING DIMENSION : MILLIMETER.
2. ALL DIMENSIONS ARE SHOWN IN MILLIMETERS(INCHES).
3. OUTLINE CONFORMS TO EIA-481 & EIA-541.
330.00
(12.992)
MAX.
14.40 ( .566 )
12.40 ( .488 )
NOTES :
1. CONTROLLING DIMENSION : MILLIMETER.
2. OUTLINE CONFORMS TO EIA-481 & EIA-541.
Notes:
Repetitive rating; pulse width limited by
max. junction temperature.
Starting TJ = 25°C, L = 0.19mH
When mounted on 1 inch square copper board
Rθ is measured at TJ approximately 90°C
ꢀ
RG = 25Ω, IAS = 16A.
Pulse width ≤ 400µs; duty cycle ≤ 2%.
Data and specifications subject to change without notice.
This product has been designed and qualified for the Industrial market.
Qualification Standards can be found on IR’s Web site.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information.2/04
10
www.irf.com
相关型号：
IRF7854
The StrongIRFET™ power MOSFET family is optimized for low RDS(on) and high current capability. The devices are ideal for low frequency applications requiring performance and ruggedness. The comprehensive portfolio addresses a broad range of applications including DC motors, battery management systems, inverters, and DC-DC converters.
INFINEON
©2020 ICPDF网 联系我们和版权申明