FDMS3660S
PowerTrench) Power Stage
Asymmetric Dual N−Channel MOSFET
Description
This device includes two specialized N−Channel MOSFETs in a
dual PQFN package. The switch node has been internally connected to
enable easy placement and routing of synchronous buck converters.
The control MOSFET (Q1) and synchronous SyncFET (Q2) have
been designed to provide optimal power efficiency.
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Features
Q1: N−Channel
• Max rDS(on) = 8 mW at VGS = 10 V, ID = 13 A
• Max rDS(on) = 11 mW at VGS = 4.5 V, ID = 11 A
Q2: N−Channel
• Max rDS(on) = 1.8 mW at VGS = 10 V, ID = 30 A
• Max rDS(on) = 2.2 mW at VGS = 4.5 V, ID = 27 A
• Low Inductance Packaging Shortens Rise/Fall Times, Resulting in
Lower Switching Losses
• MOSFET Integration Enables Optimum Layout for Lower Circuit
Inductance and Reduced Switch Node Ringing
• These Devices are Pb−Free and are RoHS Compliant
D1
D1
D1
D1
PHASE
(S1/D2)
G2
S2
S2
S2
Applications
•
•
•
•
G1
Pin 1
PQFN8
POWER 56
CASE 483AJ
Computing
Communications
General Purpose Point of Load
Notebook VCORE
S2
5
S2
6
S2
7
G2
8
Q2
4 D1
PHASE
3 D1
2 D1
Q1
1 G1
ORDERING INFORMATION
See detailed ordering and shipping information on page 2 of
this data sheet.
© Semiconductor Components Industries, LLC, 2012
November, 2017 − Rev. 3
1
Publication Order Number:
FDMS3660S/D
FDMS3660S
MAXIMUM RATINGS (TA = 25°C unless otherwise noted)
Symbol
VDS
Bvdsst
VGS
ID
Q1
Q2
Unit
Drain to Source Voltage
Rating
30
30
V
Bvdsst (Transient) < 100 ns
36
36
V
Gate to Source Voltage (Note 3)
±20
±12
V
Drain Current − Continuous (Package limited) (TC = 25°C)
30
60
A
Drain Current − Continuous (Silicon limited) (TC = 25°C)
60
145
13 (Note 6a)
30 (Note 6b)
40
120
33 (Note 4)
86 (Note 5)
mJ
W
Drain Current − Continuous (TA = 25°C)
Drain Current − Pulsed
EAS
Single Pulse Avalanche Energy
PD
Power Dissipation for Single Operation (TA = 25°C)
2.2 (Note 6a)
2.5 (Note 6b)
Power Dissipation for Single Operation (TA = 25°C)
1 (Note 6c)
1 (Note 6d)
TJ, TSTG
Operating and Storage Junction Temperature Range
°C
−55 to +150
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
THERMAL CHARACTERISTICS
Symbol
Parameter
Q1
Q2
Unit
RqJA
Thermal Resistance, Junction−to−Ambient
57 (Note 6a)
50 (Note 6b)
°C/W
RqJA
Thermal Resistance, Junction−to−Ambient
125 (Note 6c)
120 (Note 6d)
°C/W
RqJC
Thermal Resistance, Junction−to−Case
2.9
2.2
°C/W
PACKAGE MARKING AND ORDERING INFORMATION
Device
Device Marking
Package
Reel Size
Tape Width
Quantity
FDMS3660S
22CF
07OD
Power 56
13″
12 mm
3000 Units
Table 1. ELECTRICAL CHARACTERISTICS TJ = 25°C unless otherwise noted
Symbol
Parameter
Test Conditions
Type
Min
30
30
Typ
Max
Units
OFF CHARACTERISTICS
Drain to Source Breakdown Voltage
ID = 250 mA, VGS = 0 V
ID = 1 mA, VGS = 0 V
Q1
Q2
DBVDSS/
DTJ
Breakdown Voltage Temperature
Coefficient
ID = 250 mA, referenced to 25°C
ID = 10 mA, referenced to 25°C
Q1
Q2
IDSS
Zero Gate Voltage Drain Current
VDS = 24 V, VGS = 0 V
Q1
Q2
1
500
mA
mA
IGSS
Gate to Source Leakage Current
VGS = 20 V, VDS = 0 V
VGS = 12 V, VDS = 0 V
Q1
Q2
100
100
nA
nA
2.7
2.2
V
BVDSS
V
16
24
mV/°C
ON CHARACTERISTICS
VGS(th)
Gate to Source Threshold Voltage
VGS = VDS, ID = 250 mA
VGS = VDS, ID = 1 mA
Q1
Q2
DVGS(th)/
DTJ
Gate to Source Threshold Voltage
Temperature Coefficient
ID = 250 mA, referenced to 25°C
ID = 10 mA, referenced to 25°C
Q1
Q2
−6
−3
Drain to Source On Resistance
VGS = 10 V, ID = 13 A
VGS = 4.5 V, ID = 11 A
VGS = 10 V, ID = 13 A, TJ =125°C
Q1
4
6
5.7
8
11
8.7
VGS = 10 V, ID = 30 A
VGS = 4.5 V, ID = 27 A
VGS = 10 V, ID = 30 A, TJ = 125°C
Q2
1.3
1.5
1.86
1.8
2.2
2.6
rDS(on)
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2
1.1
1.1
1.9
1.5
mV/°C
mW
FDMS3660S
Table 1. ELECTRICAL CHARACTERISTICS TJ = 25°C unless otherwise noted
Symbol
Parameter
Test Conditions
Type
Min
Typ
Max
Units
ON CHARACTERISTICS
gFS
Forward Transconductance
VDS = 5 V, ID = 13 A
VDS = 5 V, ID = 30 A
Q1
Q2
62
231
S
Q1:
VDS = 15 V, VGS = 0 V, f = 1 MHZ
Q1
Q2
1325
4130
1765
5493
pF
Q1
Q2
466
915
620
1220
pF
46
124
70
185
pF
0.6
0.8
2
3
W
Q1
Q2
7.7
11
15
20
ns
Q1
Q2
2.2
5
10
10
ns
Turn−Off Delay Time
Q1
Q2
19
40
34
64
ns
Fall Time
Q1
Q2
1.8
3.9
10
10
ns
Q1
Q2
21
62
29
87
nC
Q1
Q2
9.5
29
13
41
nC
DYNAMIC CHARACTERISTICS
Ciss
Input Capacitance
Coss
Output Capacitance
Crss
Reverse Transfer Capacitance
Q1
Q2
Gate Resistance
Q1
Q2
Rg
Q2:
VDS = 15 V, VGS = 0 V, f = 1 MHZ
0.2
0.2
SWITCHING CHARACTERISTICS
td(on)
tr
td(off)
tf
Turn−On Delay Time
Rise Time
Q1:
VDD = 15 V, ID = 13 A, RGEN = 6 W
Q2:
VDD = 15 V, ID = 30 A, RGEN = 6 W
Q1
VDD = 15 V, ID = 13 A
Q2
VDD = 15 V, ID = 30 A
Qg
Total Gate Charge
VGS = 0 V to
10 V
Qg
Total Gate Charge
VGS = 0 V to
4.5 V
Qgs
Gate to Source Gate Charge
Q1
Q2
3.9
9
nC
Qgd
Gate to Drain “Miller” Charge
Q1
VDD = 15 V, ID = 13 A
Q2
VDD = 15 V, ID = 30 A
Q1
Q2
2.6
7
nC
Source to Drain Diode Forward Voltage
VGS = 0 V, IS = 13 A (Note 2)
VGS = 0 V, IS = 2 A (Note 2)
VGS = 0 V, IS = 30 A (Note 2)
VGS = 0 V, IS = 2 A (Note 2)
Q1
Q1
Q2
Q2
0.8
0.7
0.8
0.6
1.2
1.2
1.2
1.2
V
trr
Reverse Recovery Time
Q1
Q2
26
29
42
46
ns
Qrr
Reverse Recovery Charge
Q1
IF = 13 A, di/dt = 100 A/ms
Q2
IF = 30 A, di/dt = 300 A/ms
Q1
Q2
10
32
20
50
nC
DRAIN−SOURCE DIODE CHARACTERISTICS
VSD
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
1. RqJA is determined with the device mounted on a 1 in2 pad 2 oz copper pad on a 1.5 x 1.5 in. board of FR−4 material. RqJC is guaranteed
by design while RqCA is determined by the user’s board design.
2. Pulse Test: Pulse Width < 300 ms, Duty cycle < 2.0%.
3. As an N−ch device, the negative Vgs rating is for low duty cycle pulse occurrence only. No continuous rating is implied with the negative Vgs
rating.
4. EAS of 33 mJ is based on starting TJ = 25°C; N−ch: L = 1.9 mH, IAS = 6 A, VDD = 27 V, VGS = 10 V. 100% test at L= 0.1 mH, IAS = 16 A.
5. EAS of 86 mJ is based on starting TJ = 25°C; N−ch: L = 0.6 mH, IAS = 17 A, VDD = 27 V, VGS = 10 V. 100% test at L= 0.1 mH, IAS = 31 A.
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FDMS3660S
(Note 6a)
(Note 6b)
SS
SF
DS
DF
G
SS
SF
DS
DF
G
(Note 6c)
(Note 6d)
SS
SF
DS
DF
G
SS
SF
DS
DF
G
6. a) 57°C/W when mounted on a 1 in2 pad of 2 oz copper
b) 50°C/W when mounted on a 1 in2 pad of 2 oz copper
c) 125°C/W when mounted on a minimum pad of 2 oz copper
d) 120°C/W when mounted on a minimum pad of 2 oz copper
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FDMS3660S
TYPICAL CHARACTERISTICS (Q1 N−Channel) TJ = 25°C unless otherwise noted
40
4
30
VGS = 6 V
VGS = 4.5 V
20
VGS = 4 V
VGS = 3.5 V
10
PULSE DURATION = 80ms
DUTY CYCLE = 0.5% MAX
0
0.0
0.2
0.4
0.6
0.8
PULSE DURATION = 80ms
DUTY CYCLE = 0.5% MAX
NORMALIZED
DRAIN TO SOURCE ON−RESISTANCE
ID, DRAIN CURRENT (A)
VGS = 10 V
3
VGS = 3.5 V
VGS = 4 V
2
1
0
1.0
0
10
Figure 1. On Region Characteristics
30
40
Figure 2. Normalized On−Resistance vs. Drain
Current and Gate Voltage
20
ID = 13 A
VGS = 10 V
rDS(on) , DRAIN TO
1.4
1.2
1.0
0.8
SOURCE ON−RESISTANCE(mW)
1.6
NORMALIZED
DRAIN TO SOURCE ON−RESISTANCE
20
VGS = 10 V
ID, DRAIN CURRENT (A)
VDS, DRAIN TO SOURCE VOLTAGE (V)
PULSE DURATION = 80 ms
DUTY CYCLE = 0.5% MAX
16
TJ = 125 oC
8
4
TJ = 25 oC
0
0.6
−75 −50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE o (C)
2
4
6
8
10
VGS, GATE TO SOURCE VOLTAGE (V)
Figure 4. On−Resistance vs. Gate to Source
Voltage
40
40
IS, REVERSE DRAIN CURRENT (A)
PULSE DURATION = 80 m s
DUTY CYCLE = 0.5% MAX
30
VDS = 5 V
TJ = 150 oC
20
TJ = 25 oC
10
TJ = −55oC
0
ID = 13 A
12
Figure 3. Normalized On Resistance vs.
Junction Temperature
ID, DRAIN CURRENT (A)
VGS = 6 V
VGS = 4.5 V
1.5
2.0
2.5
3.0
3.5
VGS = 0 V
10
TJ = 150 oC
1
TJ = 25 oC
0.1
TJ = −55oC
0.01
0.001
0.0
4.0
VGS, GATE TO SOURCE VOLTAGE (V)
0.2
0.4
0.6
0.8
1.0
1.2
VSD, BODY DIODE FORWARD VOLTAGE (V)
Figure 5. Transfer Characteristics
Figure 6. Source to Drain Diode Forward
Voltage vs. Source Current
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FDMS3660S
TYPICAL CHARACTERISTICS (Q1 N−Channel) TJ = 25°C unless otherwise noted
2000
ID = 13 A
VDD = 10 V
Ciss
1000
8
CAPACITANCE (pF)
VGS, GATE TO SOURCE VOLTAGE (V)
10
VDD = 15 V
6
VDD = 20 V
4
Coss
100
Crss
2
f = 1 MHz
VGS = 0 V
0
0
5
10
15
20
10
0.1
25
1
10
30
VDS, DRAIN TO SOURCE VOLTAGE (V)
Qg, GATE CHARGE (nC)
Figure 7. Gate Charge Characteristics
Figure 8. Capacitance vs. Drain to Source
Voltage
100
80
ID, DRAIN CURRENT (A)
IAS, AVALANCHE CURRENT (A)
o
RqJC = 2.9 C/W
TJ = 25 oC
10
TJ = 100 oC
60
VGS = 10 V
40
VGS = 4.5 V
20
Limited by Package
TJ = 125 oC
1
0.001
0.01
0.1
1
10
0
25
100
50
tAV, TIME IN AVALANCHE (ms)
Figure 9. Unclamped Inductive Switching
Capability
P(PK), PEAK TRANSIENT POWER (W)
ID, DRAIN CURRENT (A)
10
1 ms
THIS AREA IS
LIMITED BY rDS(on)
10 ms
100 ms
SINGLE PULSE
TJ = MAX RATED
1s
10 s
DC
RqJA = 125 oC/W
TA = 25 oC
0.01
0.01
125
150
1000
100 m s
0.1
100
Figure 10. Maximum Continuous Drain
Current vs. Case Temperature
100
1
75
TC, CASE TEMPERATURE ( o C)
0.1
1
10
SINGLE PULSE
o
RqJA = 125 C/W
100
10
1
0.1 −4
10
100 200
VDS, DRAIN to SOURCE VOLTAGE (V)
−3
10
−2
10
−1
10
1
10
100
1000
t, PULSE WIDTH (sec)
Figure 11. Forward Bias Safe Operating Area
Figure 12. Single Pulse Maximum Power
Dissipation
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FDMS3660S
TYPICAL CHARACTERISTICS (Q1 N−Channel) TJ = 25°C unless otherwise noted
2
DUTY CYCLE−DESCENDING ORDER
NORMALIZED THERMAL
IMPEDANCE, ZqJA
1
0.1
D = 0.5
0.2
0.1
0.05
0.02
0.01
PDM
t1
0.01
t2
SINGLE PULSE
NOTES:
DUTY FACTOR: D = t1/t 2
PEAK TJ = PDM x ZqJA x RqJA + TA
o
RqJA = 125 C/W
(Note 1c)
0.001 −4
10
−3
10
−2
10
−1
10
11
0
t, RECTANGULAR PULSE DURATION (sec)
Figure 13. Junction−to−Ambient Transient Thermal Response Curve
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100
1000
FDMS3660S
TYPICAL CHARACTERISTICS (Q2 N−Channel) TJ = 25°C unless otherwise noted
120
4
ID, DRAIN CURRENT (A)
100
VGS = 4.5 V
VGS = 3.5 V
80
VGS = 3 V
60
40
PULSE DURATION = 80m s
DUTY CYCLE = 0.5% MAX
20
VGS = 2.5 V
0
0.0
0.2
0.4
0.6
0.8
PULSE DURATION = 80 ms
DUTY CYCLE = 0.5% MAX
NORMALIZED
DRAIN TO SOURCE ON−RESISTANCE
VGS = 10 V
3
VGS = 2.5 V
VGS = 3 V
2
1
0
1.0
0
20
Figure 14. On Region Characteristics
rDS(on), DRAIN TO
1.4
1.2
1.0
0.8
SOURCE ON−RESISTANCE(mW)
NORMALIZED
DRAIN TO SOURCE ON−RESISTANCE
100
120
8
ID = 30 A
VGS = 10 V
PULSE DURATION = 80m s
DUTY CYCLE = 0.5% MAX
6
ID = 30 A
4
TJ = 125 oC
2
TJ = 25 oC
0
0.6
−75 −50 −25 0 25 50 75 100 125 150
TJ, JUNCTION TEMPERATURE (oC)
2
4
6
8
10
VGS, GATE TO SOURCE VOLTAGE (V)
Figure 16. Normalized On−Resistance vs.
Junction Temperature
Figure 17. On−Resistance vs. Gate to Source
Voltage
120
100
PULSE DURATION = 80ms
DUTY CYCLE = 0.5% MAX
IS, REVERSE DRAIN CURRENT (A)
ID, DRAIN CURRENT (A)
80
Figure 15. Normalized On−Resistance vs.
Drain Current and Gate Voltage
1.6
VDS = 5 V
80
TJ = 125 oC
60
TJ = 25 oC
40
TJ = −55oC
20
0
1.0
60
ID, DRAIN CURRENT (A)
VDS, DRAIN TO SOURCE VOLTAGE (V)
100
40
VGS = 10 V
VGS = 4.5 V
VGS = 3.5 V
1.5
2.0
2.5
VGS = 0 V
10
1
0.1
TJ = 25 oC
0.01
0.001
3.0
TJ = 125 oC
VGS, GATE TO SOURCE VOLTAGE (V)
TJ = −55oC
0.0
0.2
0.4
0.6
0.8
1.0
VSD, BODY DIODE FORWARD VOLTAGE (V)
Figure 18. Transfer Characteristics
Figure 19. Source to Drain Diode Forward
Voltage vs. Source Current
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FDMS3660S
TYPICAL CHARACTERISTICS (Q2 N−Channel) TJ = 25°C unless otherwise noted
10000
ID = 30 A
8
Ciss
VDD = 10 V
CAPACITANCE (pF)
VGS, GATE TO SOURCE VOLTAGE (V)
10
6
VDD = 15 V
4
VDD = 20 V
1000
Coss
100
Crss
2
f = 1 MHz
VGS = 0 V
0
0
10
20
30
40
50
60
10
0.1
70
1
10
30
VDS, DRAIN TO SOURCE VOLTAGE (V)
Qg, GATE CHARGE (nC)
Figure 20. Gate Charge Characteristics
Figure 21. Capacitance vs. Drain to Source
Voltage
100
160
ID, DRAIN CURRENT (A)
IAS, AVALANCHE CURRENT (A)
o
TJ = 25 oC
10
TJ = 100 oC
TJ = 125 oC
1
0.001
0.01
0.1
1
120
VGS = 4.5 V
80
40
Limited by Package
10
100
0
1000
25
50
tAV, TIME IN AVALANCHE (ms)
P(PK), PEAK TRANSIENT POWER (W)
100 m s
10
1 ms
10 ms
THIS AREA IS
LIMITED BY rDS(on)
0.1
100 ms
SINGLE PULSE
TJ = MAX RATED
1s
10s
RqJA = 120 oC/W
DC
o
TA = 25 C
0.01
0.01
0.1
1
100
125
150
Figure 23. Maximum Continuous Drain
Current vs. Case Temperature
200
100
1
75
TC, CASE TEMPERATURE ( oC)
Figure 22. Unclamped Inductive Switching
Capability
ID, DRAIN CURRENT (A)
RqJC = 2.2 C/W
VGS = 10 V
10
100 200
2000
1000
SINGLE PULSE
o
RqJA = 120 C/W
100
10
1
0.5 −4
10
VDS, DRAIN to SOURCE VOLTAGE (V)
−3
10
−2
10
−1
10
1
10
100
1000
t, PULSE WIDTH (sec)
Figure 24. Forward Bias Safe Operating Area
Figure 25. Single Pulse Maximum Power
Dissipation
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FDMS3660S
TYPICAL CHARACTERISTICS (Q2 N−Channel) TJ = 25°C unless otherwise noted
NORMALIZED THERMAL
IMPEDANCE, ZqJA
2
1
0.1
0.01
DUTY CYCLE−DESCENDING ORDER
D = 0.5
0.2
0.1
0.05
0.02
0.01
PDM
t1
t2
SINGLE PULSE
0.0001 −4
10
NOTES:
DUTY FACTOR: D = t 1 /t 2
PEAK TJ = PDM x Z qJA x RqJA + TA
o
0.001
R qJA = 120 C/W
(Note 1d)
−3
10
−2
10
−1
10
1
10
t, RECTANGULAR PULSE DURATION (sec)
Figure 26. Junction−to−Ambient Transient Thermal Response Curve
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10
100
1000
FDMS3660S
TYPICAL CHARACTERISTICS (continued)
SyncFET Schottky Body Diode Characteristics
Figure 27 shows the reverses recovery characteristic of the
FDMS001N025DSD.
Schottky barrier diodes exhibit significant leakage at high
temperature and high reverse voltage. This will increase the
power in the device.
ON Semiconductor’s SyncFET process embeds a
Schottky diode in parallel with PowerTrench MOSFET.
This diode exhibits similar characteristics to a discrete
external Schottky diode in parallel with a MOSFET.
−2
10
IDSS, REVERSE LEAKAGE CURRENT (A)
35
30
CURRENT (A)
25
didt = 300 A/m s
20
15
10
5
0
−5
0
100
200
300
400
TJ = 125 oC
−3
10
TJ = 100 oC
−4
10
−5
10
TJ = 25 oC
−6
10
0
TIME (ns)
5
10
15
20
25
VDS, REVERSE VOLTAGE (V)
Figure 27. FDMS3660S SyncFET Body Diode
Reverse Recovery Characteristic
Figure 28. SyncFET Body Diode Reverse Leakage
vs. Drain−Source Voltage
Application Information
Switch Node Ringing Suppression
ON Semiconductor’s Power Stage products incorporate a
proprietary design that minimizes the peak overshoot,
ringing voltage on the switch node (PHASE) without the
need of any external snubbing components in a buck
converter. As shown in the Figure 29, the Power Stage
solution rings significantly less than competitor solutions
under the same set of test conditions.
Power Stage Device
Competitors Solution
Figure 29. Power Stage Phase Node Rising Edge, High Side Turn On
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FDMS3660S
Figure 30. Shows the Power Stage in a Buck Converter Topology
Recommended PCB Layout Guidelines
PHASE (S1/D2) and GND (S2), should be short and wide
for better and stable current flow, heat radiation and system
performance. A recommended layout procedure is
discussed below to maximize the electrical and thermal
performance of the part.
As a PCB designer, it is necessary to address critical issues
in layout to minimize losses and optimize the performance
of the power train. Power Stage is a high power density
solution and all high current flow paths, such as VIN (D1),
Figure 31. Recommended PCB Layout
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FDMS3660S
Following is a guideline, not a requirement which the
PCB designer should consider:
within the breakdown voltage limits. This
eliminates the need to have an external snubber
circuit in most cases. If the designer chooses to use
an RC snubber, it should be placed close to the
part between the PHASE pad and S2 pins to
dampen the high−frequency ringing.
5. The driver IC should be placed close to the Power
Stage part with the shortest possible paths for the
High Side gate and Low Side gates through a wide
trace connection. This eliminates the effect of
parasitic inductance and resistance between the
driver and the MOSFET and turns the devices on
and off as efficiently as possible. At
higher−frequency operation this impedance can
limit the gate current trying to charge the
MOSFET input capacitance. This will result in
slower rise and fall times and additional switching
losses. Power Stage has both the gate pins on the
same side of the package which allows for back
mounting of the driver IC to the board. This
provides a very compact path for the drive signals
and improves efficiency of the part.
6. S2 pins should be connected to the GND plane
with multiple vias for a low impedance grounding.
Poor grounding can create a noise transient offset
voltage level between S2 and driver ground. This
could lead to faulty operation of the gate driver
and MOSFET.
7. Use multiple vias on each copper area to
interconnect top, inner and bottom layers to help
smooth current flow and heat conduction. Vias
should be relatively large, around 8 mils to
10 mils, and of reasonable inductance. Critical
high frequency components such as ceramic
bypass caps should be located close to the part and
on the same side of the PCB. If not feasible, they
should be connected from the backside via a
network of low inductance vias.
1. Input ceramic bypass capacitors C1 and C2 must
be placed close to the D1 and S2 pins of Power
Stage to help reduce parasitic inductance and high
frequency conduction loss induced by switching
operation. C1 and C2 show the bypass capacitors
placed close to the part between D1 and S2. Input
capacitors should be connected in parallel close to
the part. Multiple input caps can be connected
depending upon the application.
2. The PHASE copper trace serves two purposes; In
addition to being the current path from the Power
Stage package to the output inductor (L), it also
serves as heat sink for the lower FET in the Power
Stage package. The trace should be short and wide
enough to present a low resistance path for the
high current flow between the Power Stage and the
inductor. This is done to minimize conduction
losses and limit temperature rise. Please note that
the PHASE node is a high voltage and high
frequency switching node with high noise
potential. Care should be taken to minimize
coupling to adjacent traces. The reference layout
in Figure 31 shows a good balance between the
thermal and electrical performance of Power
Stage.
3. Output inductor location should be as close as
possible to the Power Stage device for lower
power loss due to copper trace resistance. A
shorter and wider PHASE trace to the inductor
reduces the conduction loss. Preferably the Power
Stage should be directly in line (as shown in
Figure 31) with the inductor for space savings and
compactness.
4. The PowerTrench Technology MOSFETs used in
the Power Stage are effective at minimizing phase
node ringing. It allows the part to operate well
PowerTrench is a registered trademark of Semiconductor Components Industries, LLC (SCILLC)
www.onsemi.com
13
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
PQFN8 5X6, 1.27P (SAWN TYPE)
CASE 483AJ
ISSUE A
DOCUMENT NUMBER:
DESCRIPTION:
98AON13659G
PQFN8 5X6, 1.27P
DATE 08 FEB 2021
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 1 OF 2
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does ON Semiconductor 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 special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the
rights of others.
© Semiconductor Components Industries, LLC, 2019
www.onsemi.com
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
PQFN8 5X6, 1.27P (PUNCHED TYPE)
CASE 483AJ
ISSUE A
DATE 08 FEB 2021
D
0.10 C
(2X)
SEE
DETAIL B
PKG
CL
8
c
5
L2
PKG
CL
E
1
E1
(SCALE: 2X)
0.10 C
(2X)
4
b1 (8X)
TOP VIEW
0.10 C
D1
SEE
DETAIL C
c
A
8X
0.08 C
SIDE VIEW
(SCALE: 2X)
D2
0.10
0.05
e/2
z1
1
2
3
E3 (6X)
C
4
SEATING
PLANE
C A B
C
L1 (3X)
E4
k
e4
E2
e3 D3
k1
8
L (5X)
z (3X)
6
7
5
b (8X)
e
e1
BOTTOM VIEW
DOCUMENT NUMBER:
DESCRIPTION:
98AON13659G
PQFN8 5X6, 1.27P
Electronic versions are uncontrolled except when accessed directly from the Document Repository.
Printed versions are uncontrolled except when stamped “CONTROLLED COPY” in red.
PAGE 2 OF 2
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor reserves the right to make changes without further notice to any products herein. ON Semiconductor makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does ON Semiconductor 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 special, consequential or incidental damages. ON Semiconductor does not convey any license under its patent rights nor the
rights of others.
© Semiconductor Components Industries, LLC, 2019
www.onsemi.com
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC dba ON Semiconductor or its subsidiaries in the United States and/or other countries.
ON Semiconductor owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of ON Semiconductor’s product/patent
coverage may be accessed at www.onsemi.com/site/pdf/Patent−Marking.pdf. ON Semiconductor reserves the right to make changes without further notice to any products herein.
ON Semiconductor makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does ON Semiconductor assume any liability
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Buyer is responsible for its products and applications using ON Semiconductor products, including compliance with all laws, regulations and safety requirements or standards,
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