SPV1001
Cool bypass switch for photovoltaic applications
Features
■
IF = 16 A, VR = 40 V
■
Very low forward voltage drop
■
Very low reverse leakage current
■
K
K
A
A
A
175 °C operating junction temperature
TO220
A
K
D2PAK
Applications
■
Photovoltaic panels
Description
The SPV1001 is a system-in-package solution for
photovoltaic applications to perform cool bypass
rectification similar to that of a conventional
Schottky diode but with much lower forward
voltage drop and reverse leakage current.
The device consists of a power MOSFET
transistor which charges a capacitor during the
OFF time, and drives its gate during the ON time
using the charge previously stored in the
capacitor.
The ON and OFF times are set to reduce the
average voltage drop across the drain and source
terminals, resulting in reduced power dissipation.
Table 1.
Device summary
Order codes
SPV1001D40
Package
D2PACK
SPV1001D40TR
SPV1001T40
November 2011
Packaging
Tube
Tape and reel
TO220
Doc ID 18076 Rev 3
Tube
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12
Maximum ratings
SPV1001
1
Maximum ratings
1.1
Absolute maximum ratings
Table 2.
Absolute maximum ratings
Symbol
Unit
Max DC reverse voltage
40
V
IF
Max. forward current
16
A
Non repetitive peak surge (half-wave, single-phase,
60 Hz)
250
A
Human body level
≥8k
V
ESD level
Thermal data
Table 3.
Thermal data
Symbol
Parameter
Value
Unit
RthJC
Thermal resistance, junction-to-ambient (D2PAK, TO220)
1.5
°C/W
Junction temperature operating range
-40 to 175
°C
Storage temperature range
-40 to 175
°C
TJ
TSTG
2/12
Range
[min, max]
VR
IFSM
1.2
Parameter
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SPV1001
2
Electrical characteristics
Electrical characteristics
Table 4.
Electrical characteristics
Values
Symbol
Parameter
Test condition
IF = 16A (1)
VF,AVG
AVG forward voltage drop
IR
Reverse leakage current
D
TON/T ratio
IF = 8A (1)
VR = 40V
IF = 8A (1)
IF = 8A, TOFF
VF
Forward voltage drop
IF = 8A (1), TON
Unit
Min
Typ
Max
TJ = 25°C
-
230
-
mV
TJ = 25°C
-
120
-
mV
TJ = 125°C
-
270
-
mV
TJ = 25°C
-
1
-
µA
TJ = 125°C
-
10
-
µA
TJ = 25°C
-
95%
-
-
TJ = 125°C
-
75%
-
-
TJ = 25°C
-
920
-
mV
TJ = 125°C
-
600
-
mV
TJ = 25°C
-
70
-
mV
TJ = 125°C
-
160
-
mV
1. For correct power dissipation and heatsink sizing, please refer to Figure 1,4 e 7
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Device description
3
SPV1001
Device description
A photovoltaic panel consists of a series of PV cells. In optimal conditions, all the cells are
equally irradiated and function at the same current level. However, during normal operation
some cells may become partially shaded or obscured. These shaded cells limit the current
generated by the fully irradiated cells and, in the extreme cases where these cells are totally
obscured, the current flow is blocked.
In this case the shaded cells behave like a load, and the current generated from the fully
irradiated cells produces overvoltages which can reach the breakdown threshold. This
phenomenon, known as a “hot spot”, can cause overheating of the shaded cells and, in
some cases, even permanent damage resulting in current leakage. To prevent hot spots,
therefore, bypass diodes are connected in parallel to the cell strings.
The device described here has the same functionality as a Schottky diode, but with
improved performance. It features very low forward voltage drop and reverse leakage
current. It consists of a power MOSFET transistor which charges a capacitor during the OFF
time, and drives its gate during the ON time using the charge previously stored in the
capacitor. The ON and OFF times are set to reduce the average voltage drop across the
drain and source terminals, resulting in reduced power dissipation.
4/12
Doc ID 18076 Rev 3
SPV1001
Device description
Figure 1.
Average forward power dissipation Figure 2.
vs average forward current
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Device description
Figure 5.
SPV1001
Average forward power dissipation Figure 6.
vs average forward current @ 25°C
of ambient temperature
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vs average forward current @ 75°C
of ambient temperature
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Doc ID 18076 Rev 3
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SPV1001
4
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Table 5.
TO-220 type A mechanical data
mm
Dim.
Min.
Typ.
Max.
A
4.40
4.60
b
0.61
0.88
b1
1.14
1.70
c
0.48
0.70
D
15.25
15.75
D1
1.27
E
10
10.40
e
2.40
2.70
e1
4.95
5.15
F
1.23
1.32
H1
6.20
6.60
J1
2.40
2.72
L
13
14
L1
3.50
3.93
L20
16.40
L30
28.90
∅P
3.75
3.85
Q
2.65
2.95
Doc ID 18076 Rev 3
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Package mechanical data
Figure 8.
SPV1001
TO-220 type A drawing
0015988_typeA_Rev_S
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Doc ID 18076 Rev 3
SPV1001
Package mechanical data
Table 6.
D²PAK (TO-263) mechanical data
mm
Dim.
Min.
Typ.
Max.
A
4.40
4.60
A1
0.03
0.23
b
0.70
0.93
b2
1.14
1.70
c
0.45
0.60
c2
1.23
1.36
D
8.95
9.35
D1
7.50
E
10
E1
8.50
10.40
e
2.54
e1
4.88
5.28
H
15
15.85
J1
2.49
2.69
L
2.29
2.79
L1
1.27
1.40
L2
1.30
1.75
R
V2
0.4
0°
8°
Doc ID 18076 Rev 3
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Package mechanical data
Figure 9.
SPV1001
D²PAK (TO-263) drawing
0079457_R
10/12
Doc ID 18076 Rev 3
SPV1001
5
Revision history
Revision history
Table 7.
Document revision history
Date
Revision
Changes
30-Mar-2011
1
Initial release
14-Jun-2011
2
–
–
–
–
11-Nov-2011
3
Updated Figure 3
Added D2PAK package
Document status promoted from preliminary data to full datasheet
Part number in title changed to SPV1001
Minor text changes
Doc ID 18076 Rev 3
11/12
SPV1001
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