MiniMOS devices are an advanced series of power MOSFETs
which utilize Motorola’s High Cell Density HDTMOS process. These
miniature surface mount MOSFETs feature ultra low R
logic level performance. They are capable of withstanding high energy in
the avalanche and commutation modes and the drain–to–s ource diode
has a very low reverse recovery time. MiniMOS devices are designed for
use in low voltage, high speed switching applications where power
efficiency is important. Typical applications are dc–dc converters, and
power management in portable and battery powered products such as
computers, printers, cellular and cordless phones. They can also be
used for low voltage motor controls in mass storage products such as
disk drives and tape drives. The avalanche energy is specified to
eliminate the guesswork in designs where induc tive loads are switched
and offer additional safety margin against unexpected voltage transients.
• Low R
Provides Higher Efficiency and Extends Battery Life
DS(on)
• High Speed Switching Provides High Efficiency for DC/DC
Converter
• Miniature SO–8 Surface Mount Package — Saves Board Space
• Diode Exhibits High Speed, With Soft Recovery
DS(on)
and true
Motorola Preferred Device
SINGLE TMOS
POWER MOSFET
10 AMPERES
30 VOLTS
R
CASE 751–06, Style 12
D
Source
Source
G
Source
Gate
DS(on)
SO–8
= 15 m
1
2
3
4
W
8
Drain
7
Drain
6
Drain
5
Drain
S
MAXIMUM RATINGS
Drain–to–Source VoltageV
Drain–to–Gate Voltage (RGS = 1.0 MΩ)V
Gate–to–Source Voltage — ContinuousV
Continuous Drain Current @ TA = 25°C
Pulsed Drain Current
Total Power Dissipation @ TA = 25°C
Operating and Storage Temperature RangeTJ, T
(TJ = 25°C unless otherwise noted)
Parameter
(1)
(2)
(1)
SymbolMaxUnit
DSS
DGR
GS
I
D
I
DM
P
D
stg
Top View
30Vdc
30Vdc
± 20Vdc
10
50
2.5W
– 55 to 150°C
Adc
THERMAL RESISTANCE
Junction–to–Ambient
(1) When mounted on 1 inch square FR–4 or G–10 board (VGS = 10 V, @ 10 Seconds)
(2) Repetitive rating; pulse width limited by maximum junction temperature.
(1)
R
θJA
50°C/W
DEVICE MARKINGORDERING INFORMATION
DeviceReel SizeTape WidthQuantity
MMSF1310R213″12 mm embossed tape2500 units
Designer’s Data for “Worst Case” Conditions — The Designer’s Data Sheet permits the design of most circuits entirely from the information presented. SOA Limit
curves — representing boundaries on device characteristics — are given to facilitate “worst case” design.
Designer’s, HDTMOS and MiniMOS are trademarks of Motorola, Inc. TMOS is a registered trademark of Motorola, Inc.
Thermal Clad is a trademark of the Bergquist Company.
Preferred devices are Motorola recommended choices for future use and best overall value.
Motorola TMOS Power MOSFET Transistor Device Data
Motorola, Inc. 1998
1
Page 2
MMSF1310
)
f = 1.0 MHz)
V
10 Vd
G
)
(
DS
,
D
,
(
S
,
GS
,
ELECTRICAL CHARACTERISTICS
CharacteristicSymbolMinTypMaxUnit
OFF CHARACTERISTICS
Drain–to–Source Breakdown Voltage
(VGS = 0 Vdc, ID = 0.25 mAdc)
T emperature Coef ficient (Positive)
Zero Gate Voltage Drain Current
(4) Repetitive rating; pulse width limited by maximum junction temperature.
(1)
Cpk =
(TC = 25°C unless otherwise noted)
(1)
(VDS = 24 Vdc, VGS = 0 V,
f = 1.0 MHz
(2)
(VDD = 24 Vdc, ID = 10 Adc,
GS
RG = 6.0 Ω)
(VDS = 15 Vdc, ID = 10 Adc,
VGS = 10 Vdc)
(IS = 10 Adc, VGS = 0 Vdc)
(IS = 10 Adc, VGS = 0 Vdc, TJ = 125°C)
(IS = 10 Adc, VGS = 0 Vdc,
dIS/dt = 100 A/µs)
Max limit – Typ
3 x SIGMA
=
(1)
c,
(1)
(1)
(1)
V
(BR)DSS
I
DSS
GSS
V
GS(th)
R
DS(on)
g
FS
C
iss
C
oss
C
rss
t
d(on)
t
r
t
d(off)
t
f
Q
Q
Q
Q
V
SD
t
rr
t
a
t
b
RR
30
—
—
—
——100nAdc
1.0
—
—
—
—5.0—Mhos
—14402020pF
—680960
—195280
—1020
—3672
—82164
—95190
T
1
2
3
—4868
—3.0—
—4.0—
—7.0—
—
—
—52—
—23—
—30—
—0.05—µC
—
27
—
—
1.3
4.4
9.5
12.5
0.82
0.67
—
—
1.0
10
2.5
—
15
19
1.0
—
Vdc
mV/°C
µAdc
Vdc
mV/°C
mΩ
ns
nC
Vdc
ns
2
Motorola TMOS Power MOSFET Transistor Device Data
Page 3
TYPICAL ELECTRICAL CHARACTERISTICS
MMSF1310
20
10 V
16
12
8
, DRAIN CURRENT (AMPS)
D
I
4
0
00.20.41.20.61.0
3.1 V
3.5 V
4.5 V
VDS, DRAIN–TO–SOURCE VOL TAGE (VOLTS)
Figure 1. On–Region Characteristics
0.05
0.04
0.03
0.02
0.8
2.9 V
2.7 V
VGS = 2.3 V
TJ = 25°C
1.41.62.0
1.8
ID = 10 A
TJ = 25
°
C
20
VDS ≥ 10 V
16
12
8
, DRAIN CURRENT (AMPS)
D
I
4
0
02
TJ = 125°C
25°C
–55°C
1
VGS, GATE–T O–SOURCE VOLTAGE (VOLTS)
34
Figure 2. Transfer Characteristics
0.02
TJ = 25°C
0.015
0.01
VGS = 4.5 V
10 V
5
0.01
, DRAIN–TO–SOURCE RESIST ANCE (OHMS)
W
0
DSon( )
R
20410
VGS, GATE–T O–SOURCE VOLTAGE (VOLTS)
68
Figure 3. On–Resistance versus
Drain Current
2.0
VGS = 10 V
ID = 10 A
1.5
1.0
(NORMALIZED)
0.5
, DRAIN–TO–SOURCE RESIST ANCE
DS(on)
R
0
–50–250255075100125150
TJ, JUNCTION TEMPERATURE (
°
C)
0.005
, DRAIN–TO–SOURCE RESIST ANCE (OHMS)
0
DS(on)
0124
R
ID, DRAIN CURRENT (AMPS)
3
Figure 4. On–Resistance versus Drain Current
and Gate Voltage
1E–06
1E–07
1E–08
, LEAKAGE (A)
1E–09
DSS
I
1E–10
1E–11
0
TJ = 125°C
100°C
25°C
515
VDS, DRAIN–TO–SOURCE VOL TAGE (VOLTS)
102025
5
VGS = 0 V
30
Figure 5. On–Resistance Variation with
T emperature
Motorola TMOS Power MOSFET Transistor Device Data
Figure 6. Drain–T o–Source Leakage
Current versus Voltage
3
Page 4
MMSF1310
POWER MOSFET SWITCHING
Switching behavior is most easily modeled and predicted
by recognizing that the power MOSFET is charge controlled.
The lengths of various switching intervals (∆t) are determined by how fast the FET input capacitance can be charged
by current from the generator.
The published capacitance data is difficult to use for calculating rise and fall because drain–gate capacitance varies
greatly with applied voltage. Accordingly , gate charge data is
used. In most cases, a satisfactory estimate of average input
current (I
) can be made from a rudimentary analysis of
G(A V)
the drive circuit so that
t = Q/I
G(AV)
During the rise and fall time interval when switching a resistive load, VGS remains virtually constant at a level known as
the plateau voltage, V
. Therefore, rise and fall times may
SGP
be approximated by the following:
tr = Q2 x RG/(VGG – V
tf = Q2 x RG/V
GSP
GSP
)
where
VGG = the gate drive voltage, which varies from zero to V
GG
RG = the gate drive resistance
and Q2 and V
are read from the gate charge curve.
GSP
During the turn–on and turn–off delay times, gate current is
not constant. The simplest calculation uses appropriate values from the capacitance curves in a standard equation for
voltage change in an RC network. The equations are:
t
d(on)
t
d(off)
= RG C
= RG C
In [VGG/(VGG – V
iss
In (VGG/V
iss
GSP
)]
GSP
)
The capacitance (C
) is read from the capacitance curve at
iss
a voltage corresponding to the off–state condition when calculating t
on–state when calculating t
and is read at a voltage corresponding to the
d(on)
d(off)
.
At high switching speeds, parasitic circuit elements complicate the analysis. The inductance of the MOSFET source
lead, inside the package and in the circuit wiring which is
common to both the drain and gate current paths, produces a
voltage at the source which reduces the gate drive current.
The voltage is determined by Ldi/dt, but since di/dt is a function of drain current, the mathematical solution is complex.
The MOSFET output capacitance also complicates the
mathematics. And finally, MOSFETs have finite internal gate
resistance which effectively adds to the resistance of the
driving source, but the internal resistance is difficult to measure and, consequently , is not specified.
The resistive switching time variation versus gate resistance (Figure 8) shows how typical switching performance is
affected by the parasitic circuit elements. If the parasitics
were not present, the slope of the curves would maintain a
value of unity regardless of the switching speed. The circuit
used to obtain the data is constructed to minimize common
inductance in the drain and gate circuit loops and is believed
readily achievable with board mounted components. Most
power electronic loads are inductive; the data in the figure is
taken with a resistive load, which approximates an optimally
snubbed inductive load. Power MOSFETs may be safely operated into an inductive load; however, snubbing reduces
switching losses.
4000
VDS = 0 VVGS = 0 V
C
iss
0
–100510–5
C, CAPACITANCE (pF)
3000
2000
1000
C
oss
C
rss
C
1530
2025
V
V
DS
GS
VDS, DRAIN–TO–SOURCE VOL TAGE (VOLTS)
Figure 7. Capacitance Variation
TJ = 25°C
rss
4
Motorola TMOS Power MOSFET Transistor Device Data
Page 5
1000
TJ = 25°C
ID = 10 A
VDD = 24 V
VGS = 10 V
100
t, TIME (ns)
10
1
110100
t
f
t
d(off)
t
r
t
d(on)
RG, GATE RESISTANCE (OHMS)
Figure 8. Resistive Switching Time V ariation
versus Gate Resistance
DRAIN–TO–SOURCE DIODE CHARACTERISTICS
MMSF1310
The switching characteristics of a MOSFET body diode
are very important in systems using it as a freewheeling or
commutating diode. Of particular interest are the reverse recovery characteristics which play a major role in determining
switching losses, radiated noise, EMI and RFI.
System switching losses are largely due to the nature of
the body diode itself. The body diode is a minority carrier device, therefore it has a finite reverse recovery time, trr, due to
the storage of minority carrier charge, QRR, as shown in the
typical reverse recovery wave form of Figure 10. It is this
stored charge that, when cleared from the diode, passes
through a potential and defines an energy loss. Obviously,
repeatedly forcing the diode through reverse recovery further
increases switching losses. Therefore, one would like a
diode with short trr and low QRR specifications to minimize
these losses.
The abruptness of diode reverse recovery effects the
amount of radiated noise, voltage spikes, and current ringing. The mechanisms at work are finite irremovable circuit
parasitic inductances and capacitances acted upon by high
10
VGS = 0 V
TJ = 25
°
8
C
di/dts. The diode’s negative di/dt during ta is directly controlled by the device clearing the stored charge. However,
the positive di/dt during tb is an uncontrollable diode characteristic and is usually the culprit that induces current ringing.
Therefore, when comparing diodes, the ratio of tb/ta serves
as a good indicator of recovery abruptness and thus gives a
comparative estimate of probable noise generated. A ratio of
1 is considered ideal and values less than 0.5 are considered
snappy.
Compared to Motorola standard cell density low voltage
MOSFETs, high cell density MOSFET diodes are faster
(shorter trr), have less stored charge and a softer reverse recovery characteristic. The softness advantage of the high
cell density diode means they can be forced through reverse
recovery at a higher di/dt than a standard cell MOSFET
diode without increasing the current ringing or the noise generated. In addition, power dissipation incurred from switching
the diode will be less due to the shorter recovery time and
lower switching losses.
6
4
, SOURCE CURRENT (AMPS)
2
S
I
0
00.20.40.61
VSD, SOURCE–TO–DRAIN VOL TAGE (VOLTS)
Figure 9. Diode Forward Voltage versus Current
Motorola TMOS Power MOSFET Transistor Device Data
0.8
5
Page 6
MMSF1310
di/dt = 300 A/µs
, SOURCE CURRENT
S
I
Figure 10. Reverse Recovery Time (trr)
SAFE OPERATING AREA
The Forward Biased Safe Operating Area curves define
the maximum simultaneous drain–to–source voltage and
drain current that a transistor can handle safely when it is forward biased. Curves are based upon maximum peak junction temperature and a case temperature (TC) of 25°C. Peak
repetitive pulsed power limits are determined by using the
thermal response data in conjunction with the procedures
discussed in AN569, “Transient Thermal Resistance – General Data and Its Use.”
Switching between the off–state and the on–state may traverse any load line provided neither rated peak current (IDM)
nor rated voltage (V
time (tr, tf) does not exceed 10 µs. In addition the total power
) is exceeded, and that the transition
DSS
Standard Cell Density
t
rr
High Cell Density
t
rr
t
b
t
a
t, TIME
averaged over a complete switching cycle must not exceed
(T
J(MAX)
– TC)/(R
θJC
).
A power MOSFET designated E–FET can be safely used
in switching circuits with unclamped inductive loads. For reliable operation, the stored energy from circuit inductance dissipated in the transistor while in avalanche must be less than
the rated limit and must be adjusted for operating conditions
differing from those specified. Although industry practice is to
rate in terms of energy, avalanche energy capability is not a
constant. The energy rating decreases non–linearly with an
increase of peak current in avalanche and peak junction temperature.
100
10
1
, DRAIN CURRENT (AMPS)
0.1
D
I
0.01
0.1
100 ms
1 ms
VGS = 10 V
SINGLE PULSE
TC = 25
°
C
R
LIMIT
DS(on)
THERMAL LIMIT
PACKAGE LIMIT
1
VDS, DRAIN–TO–SOURCE VOL TAGE (VOLTS)
10
10 ms
dc
Figure 11. Maximum Rated Forward Biased
Safe Operating Area
100
6
Motorola TMOS Power MOSFET Transistor Device Data
Page 7
INFORMATION FOR USING THE SO–8 SURFACE MOUNT PACKAGE
MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS
Surface mount board layout is a critical portion of the total
design. The footprint for the semiconductor packages must be
the correct size to ensure proper solder connection interface
MMSF1310
between the board and the package. With the correct pad
geometry, the packages will self–align when subjected to a
solder reflow process.
0.060
1.52
0.275
7.0
0.024
0.6
SO–8 POWER DISSIP ATION
The power dissipation of the SO–8 is a function of the input
pad size. This can vary from the minimum pad size for
soldering to the pad size given for maximum power
dissipation. Power dissipation for a surface mount device is
determined by T
temperature of the die, R
device junction to ambient; and the operating temperature, TA.
Using the values provided on the data sheet for the SO–8
package, PD can be calculated as follows:
PD =
The values for the equation are found in the maximum
ratings table on the data sheet. Substituting these values into
, the maximum rated junction
J(max)
, the thermal resistance from the
θJA
T
J(max)
R
θJA
– T
A
0.155
4.0
0.050
1.270
inches
mm
the equation for an ambient temperature TA of 25°C, one can
calculate the power dissipation of the device which in this case
is 2.5 Watts.
PD =
150°C – 25°C
50°C/W
= 2.5 Watts
The 50°C/W for the SO–8 package assumes the
recommended footprint on a glass epoxy printed circuit board
to achieve a power dissipation of 2.5 Watts using the footprint
shown. Another alternative would be to use a ceramic
substrate or an aluminum core board such as Thermal Clad.
Using board material such as Thermal Clad, the power
dissipation can be doubled using the same footprint.
SOLDERING PRECAUTIONS
The melting temperature of solder is higher than the rated
temperature of the device. When the entire device is heated
to a high temperature, failure to complete soldering within a
short time could result in device failure. Therefore, the
following items should always be observed in order to
minimize the thermal stress to which the devices are
subjected.
• Always preheat the device.
• The delta temperature between the preheat and soldering
should be 100°C or less.*
• When preheating and soldering, the temperature of the
leads and the case must not exceed the maximum
temperature ratings as shown on the data sheet. When
using infrared heating with the reflow soldering method,
the difference shall be a maximum of 10°C.
Motorola TMOS Power MOSFET Transistor Device Data
• The soldering temperature and time shall not exceed
260°C for more than 10 seconds.
• When shifting from preheating to soldering, the maximum
temperature gradient shall be 5°C or less.
• After soldering has been completed, the device should be
allowed to cool naturally for at least three minutes.
Gradual cooling should be used as the use of forced
cooling will increase the temperature gradient and result
in latent failure due to mechanical stress.
• Mechanical stress or shock should not be applied during
cooling.
* Soldering a device without preheating can cause excessive
thermal shock and stress which can result in damage to the
device.
7
Page 8
MMSF1310
TYPICAL SOLDER HEATING PROFILE
For any given circuit board, there will be a group of control
settings that will give the desired heat pattern. The operator
must set temperatures for several heating zones and a figure
for belt speed. T aken together , these control settings make up
a heating “profile” for that particular circuit board. On
machines controlled by a computer, the computer remembers
these profiles from one operating session to the next. Figure
12 shows a typical heating profile for use when soldering a
surface mount device to a printed circuit board. This profile will
vary among soldering systems, but it is a good starting point.
Factors that can affect the profile include the type of soldering
system in use, density and types of components on the board,
type of solder used, and the type of board or substrate material
being used. This profile shows temperature versus time. The
line on the graph shows the actual temperature that might be
experienced on the surface of a test board at or near a central
solder joint. The two profiles are based on a high density and
a low density board. The Vitronics SMD310 convection/infrared reflow soldering system was used to generate this
profile. The type of solder used was 62/36/2 Tin Lead Silver
with a melting point between 177–189°C. When this type of
furnace is used for solder reflow work, the circuit boards and
solder joints tend to heat first. The components on the board
are then heated by conduction. The circuit board, because it
has a large surface area, absorbs the thermal energy more
efficiently, then distributes this energy to the components.
Because of this effect, the main body of a component may be
up to 30 degrees cooler than the adjacent solder joints.
200
150
100
50°C
STEP 1
PREHEA T
ZONE 1
“RAMP”
°
C
DESIRED CURVE FOR HIGH
MASS ASSEMBLIES
°
C
°
C
TIME (3 TO 7 MINUTES TOTAL)
STEP 2
VENT
“SOAK”
150°C
Figure 12. T ypical Solder Heating Profile
STEP 3
HEATING
ZONES 2 & 5
“RAMP”
160
100°C
DESIRED CURVE FOR LOW
MASS ASSEMBLIES
STEP 4
HEATING
ZONES 3 & 6
“SOAK”
°
C
SOLDER IS LIQUID FOR
40 TO 80 SECONDS
°
C
140
(DEPENDING ON
MASS OF ASSEMBLY)
STEP 5
HEATING
ZONES 4 & 7
“SPIKE”
170°C
T
MAX
STEP 6
VENT
STEP 7
COOLING
205
°
TO 219°C
PEAK AT
SOLDER JOINT
8
Motorola TMOS Power MOSFET Transistor Device Data
Page 9
P ACKAGE DIMENSIONS
MMSF1310
A
C
E
B
A1
D
58
0.25MB
1
H
4
e
M
h
X 45
_
q
C
A
SEATING
PLANE
0.10
L
B
SS
A0.25MCB
CASE 751–06
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
2. DIMENSIONS ARE IN MILLIMETER.
3. DIMENSION D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 TOTAL IN EXCESS
OF THE B DIMENSION AT MAXIMUM MATERIAL
CONDITION.
MILLIMETERS
DIMMINMAX
A1.351.75
A10.100.25
B0.350.49
C0.190.25
D4.805.00
E
3.804.00
1.27 BSCe
H5.806.20
h
0.250.50
L0.401.25
0 7
q
STYLE 12:
PIN 1. SOURCE
2. SOURCE
3. SOURCE
4. GATE
5. DRAIN
6. DRAIN
7. DRAIN
8. DRAIN
__
SO–8
ISSUE T
Motorola TMOS Power MOSFET Transistor Device Data
9
Page 10
MMSF1310
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE/ Locations Not Listed: Motorola Literature Distribution;JAPAN: Nippon Motorola Ltd.; SPD, Strategic Planning Office, 141,
P.O. Box 5405, Denver, Colorado 80217. 1–303–675–2140 or 1–800–441–2447 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan. 81–3–5487–8488
Customer Focus Center: 1–800–521–6274
Mfax: RMFAX0@email.sps.mot.com – TOUCHTONE 1–602–244–6609ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
Moto rola Fax Back System– US & Canada ONLY 1–800–774–1848 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
HOME PAGE: http://motorola.com/sps/
10
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◊
Motorola TMOS Power MOSFET Transistor Device Data
Mfax is a trademark of Motorola, Inc.
MMSF1310/D
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