STIL
®
AC INRUSH CURRENT LIMITER
ASD
APPLICATIONS
TAB
■
■
■
■
■
High power density switching power supply
Server and Telecom power supplies
Game station power supplies
High end TV displays
Portable equipment adaptators
5
23
■
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Replaces two diodes of the bridge in steady
state
Dual unidirectional switches in a single
package
Inrush current limitation circuit for off-line
power supply
Designed for instantaneous response after AC
line drop out or browning
Surge current capability as per IEC61000-4-5
Low consumption (IPt= 20mA)
■
High noise immunity:
dV/dt> 1000V/µs @ Tj=125°C
Low reverse current losses
Integrated pilot driver of the power switches
Suitable where efficiency and space are critical
■
4
5
PENTAWATT
STIL06-T5
TAB
■
■
2 3
TAB
1
4
5
1
2 3
4
5
PENTAWATT
STIL08-T5
Table 1: Order Codes
Part Number
Marking
STIL04-P5
STIL04P5
STIL04-T5
STIL04T5
STIL06-T5
STIL06T5
STIL08-T5
STIL08T5
Table 2: Pin Out Description
Pin out
designation
L
Pt1
OUT
Pt2
N
Figure 1: Block diagram
2 3
PENTAWATT
STIL04-T5
BENEFITS
■
1
PENTAWATT HV2
STIL04-P5
FEATURES
■
4
1
Description
Position
AC Line (switch1)
1
Drive of power switch 1
2
Output
3
Drive of power switch 2
4
AC Neutral (switch 2)
5
Figure 2: Basic connection
Inrush resistor
L
L
DRIVER
Pt1
+
OUT
Pt2
+
AC in
Auxil.
Supply
Pt1
+
OUT
Pt2
Main
Converter
VOUT
N
N
ASD: Application Specific Devices.
December 2005
REV. 5
1/11
STIL
FUNCTIONAL DESCRIPTION IN A PFC BOOST PRE-REGULATOR
The STIL is connected in parallel with the diode bridge and the inrush power resistor. During start up, the
two unidirectional ASD power switches of the STIL are open (Figure 3). The inrush current flows through
the diodes of the bridge and external inrush power resistor. When the PFC reaches steady state, the
auxiliary power supply coupled with the main transformer, supplies the energy required to feed the driver
of the two power switches of the STIL (Figure 4). In steady state, the two DC ground connected diodes of
the bridge rectifier and the two unidirectional switches of the STIL connected to DC+ rectify the AC line
current.
Figure 3: Function description at turn-on
pt1
DRIVER
I
I
+
pt2
Auxiliary Power
I
+
-
AC in
OUT
Bridge
Inrush resistor
Figure 4: Function description in steady state
pt1
DRIVER
I
I
+
pt2
Auxiliary Power
AC in
I
+
-
OUT
Bridge
Inrush resistor
POWERFAIL FEATURE
When the STIL is used with a PFC boost converter, the inrush current circuit is active after an AC line dropout. In that configuration, since the AC line disappears, the PFC controller and the auxiliary power supply
of the STIL (Figure 8) turns OFF. The two switches of the STIL are open. The output bulk capacitor Cb is
discharging and it is providing the energy to the main converter. When the AC line recovers, the two
switches remain opened and recharging inrush current of the capacitor Cb is deviated and limited through
the resistor Ri. When the capacitor had finished charging, the PFC turns ON again and the two switches
of the STIL switch ON.
More details on the design and operation of the driver circuit of figure 5 can be found in the application
note “AN1600 - STIL: Inrush Current Limitation Device for Off-Line Power Converter”.
2/11
STIL
Table 3: Absolute Maximum Ratings (limiting value)
Symbol
Value
Parameter
STIL04 STIL06 STIL08
VDOUT
Repetitive forward off-state voltage,
between terminals L or N and OUT terminal
Tj = 0 to 150°C
VROUT
Repetitive reverse off-state voltage,
between OUT terminals and terminals L
or N
Tj = 0 to 150°C
Iout(AV)
Average on state current at the OUT terTj = 150°C
minal (180° conduction angle for the
internal power switches)
I2t
dIout/dt
V
700
800
800
V
4
6
8
A
4.4
6.7
8.9
A
Non repetitive surge peak on-state curt = 10ms
rent for each AC input terminals L and N p
sinusoidal
(Tj initial = 25°C)
65
70
100
A
I2t value - rating for fusing
tp = 10ms
21
24
50
A 2s
Critical rate of rise of on state current
IPt1 + IPt2 = 20mA
Tj = 0 to 150°C
RMS on state current at the OUT termiIout(RMS) nal (180° conduction angle for the internal power switches)
ITSM
700
Unit
Tj = 150°C
100
A/µs
Tstg
Storage temperature range
-40 to +150
°C
Tj
Junction temperature range
0 to +150
°C
Table 4: Thermal Parameters
Symbol
Parameter
Value
Rth(j-c)
Junction to case
2
Rth(j-a)
Junction to ambient
60
Unit
°C/W
3/11
STIL
Table 5: Electrical Characteristics
Values
Symbol
Parameter
Test conditions
STIL04
STIL06
STIL08
Unit
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
IPt1
+
IPt2
VD(Pt1)
VD(Pt2)
VR(Pt1)
VR(Pt2)
Driver trigger
current
T = 0°C
VDout = 12V(DC) j
RL = 30Ω
Tj = 25°C
Direct driver
trigger voltage
Tj = 0°C
0.6
VDout = 12V(DC)
Tj = 25°C
RL = 30Ω
Tj = 150°C 0.2
Maximum repetitive reverse driver T = 25°C
j
voltage
VF **
4/11
10
0.85
1
0.85
1
0.8
1
0.8
0.95
0.8
0.95
0.75
0.9
0.45
0.2
8
0.45
0.2
1000
1000
0.4
V
5
5
5
300
300
300
300
300
300
µA
0.75
0.9
V
0.75
55
0.9
80
Tj = 150°C
45
50
Iout(AV) = 8A
mΩ
30
0.95
µA
0.9
Tj = 150°C
Tj = 150°C
V
V/µs
0.75
Iout(AV) = 4A
Iin = 4A
Forward voltage
Iin = 6A
drop for one
power switch
Iin = 8A
Pulse test:
* tp = 300 ms, δ < 2%
** tp = 380 µs, δ < 2%
10
Tj = 125°C 1000
VRout = 400V
T = 150°C
IPt1 = IPt2 = 10mA j
20
mA
10
500
Max reverse
IRout (on)* current with
driver current
Iout(AV) = 6A
12
500
Tj = 25°C
VRout = 800V
IPt1 = IPt2 = open T = 150°C
j
Rd
20
Tj = 150°C 500
Max reverse
IRout (off)* current without
driver current
Dynamic
resistance for
one power
switch
12
8
Linear slope up
to VDout = 470V
Vt0
20
8
dVDout/dt Dynamic
voltage rising
Iout(AV) = 4A
Threshold direct
voltage for one Iout(AV) = 6A
power switch
Iout(AV) = 8A
12
40
1.4
1.05 1.35
V
0.97
1.2
STIL
POWER LOSSES CALCULATION
When the input current is sinusoidal (case of PFC), the conducted power losses can be calculated by using the following formula:
2
( I out ( AV ) × π )
P tot = V t0 ⋅ I out ( AV ) + R d ⋅ ------------------------------------8
If the output average current is 8Amps, Vt0 and Rd of the electrical characteristics table can be used. For
different output current please refer to the application note AN1600 that provides guidelines to estimate
the correct values of Vt0 and Rd.
LIGHTNING SURGE IMMUNITY (IEC61000-4-5)
During lightning surge transient voltage across the AC line, over current and over voltage stress are applied on all the components of the power supply. The STIL can sustain a maximum peak surge current up
to IPEAK (IPEAK = 500A for STIL04/STIL06 and IPEAK = 1000A for STIL08) as defined by the combine waveform generator (8/20µs waveform as shown in figures 5, 6 and 7).
Special recommendations for the lightning surge immunity:
1 - Check that the IPEAK in the STIL stays below the limit specified above.
2 - Check that no over voltages are applied on the STIL and the bridge diode.
3 - In order to reduce the dynamic current stress (dIout/dt) through the structure of the STIL, it is recommended to connect a differential mode choke coil in front of the STIL and the bridge diode.
More details and design guidelines are provided in the application note “AN1600 - STIL: Inrush Current
Limitation Device for Off-Line Power Converter”.
Figure 5: Surge test condition
IEC61000-4-5
L
+
OUT
DRIVER
STIL
Pt 1
5Vdc
Pt 2
Coupling
network
+
surge
generator
N
0
VOUT
(level 1, 2, 3 or 4)
IOUT
Figure 6: Surge test characterisation for STIL04/06
Figure 7: Surge test characterisation for STIL08
IEC61000-4-5
1
IEC61000-4-5
1
5 µs
80A/Div
IOUT
Ipeak=500A
5 µs
160A/Div
IOUT
Ipeak=1000A
Ipeak
1
0 Amps
Ipeak
1
0 Amps
8 µs
8 µs
20 µs
20 µs
5/11
STIL
L
Figure 8: Basic connection with a PFC boost preregulator
R1
DRIVER
Pt1
Pt2
+
OUT
N
R2
C2
C0
R
+
-
AC in
C1
Inrush resistor
Vout
Cb
Auxiliary windows
(see application
note AN1692)
Figure 9: Non repetitive surge peak on-state
current (sinusoidal pulse) and corresponding
value of I2t (Tj initial = 25°C)
PFC Control
Figure 10: Non repetitive surge peak on-state
current (sinusoidal pulse) and corresponding
value of I2t (Tj initial = 150°C)
ITSM(A), I²t(A²s)
ITSM(A), I²t(A²s)
1000
1000
Tj initial=25°C
ITSM
Tj initial=150°C
ITSM
STIL08
STIL08
STIL04/STIL06
100
100
STIL08
STIL04/STIL06
I²t
I²t
STIL08
10
10
STIL04/STIL06
STIL04/STIL06
tp(ms)
tp(ms)
1
1
0.01
0.10
1.00
0.01
10.00
Figure 11: Relative variation of driver trigger
current versus junction temperature (typical
values)
IPt1 or IPt2 [Tj] / IPt1 or IPt2 [Tj = 25°C]
1.3
1.00
10.00
Figure 12: Relative variation of direct pilot
trigger voltage versus junction temperature
(typical values)
1.2
1.4
0.10
VDPt1 or VDPt2 [Tj] / VDPt1 or VDPt2 [Tj = 25°C]
1.1
1.2
1.0
1.1
1.0
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.4
0.5
0.3
Tj(°C)
Tj(°C)
0.4
0.2
0
6/11
25
50
75
100
125
150
0
25
50
75
100
125
150
STIL
Figure 13: Relative variation of thermal
impedance junction to case versus pulse
duration
Figure 14: Reverse current versus junction
temperature without driver current (typical
values)
K = [Zth(j-c)/Rth(j-c)]
IR(OUT)OFF(µA)
1.0
1.E+02
Pt1 & Pt2 open
0.9
STIL04
0.8
STIL06/STIL08
VR(OUT)=800V
1.E+01
0.7
STIL06/STIL08
0.6
1.E+00
STIL04
VR(OUT)=400V
0.5
1.E-01
0.4
0.3
1.E-02
0.2
0.1
Tj(°C)
tp(s)
0.0
1.E-04
1.E-03
1.E-02
1.E-03
1.E-01
1.E+00
0
1.E+01
Figure 15: Reverse current versus junction
temperature with driver current (typical
values) (STIL04)
25
50
75
100
125
150
Figure 16: Reverse current versus junction
temperature with driver current (typical
values) (STIL06)
IR(OUT)ON(µA)
IR(OUT)ON(µA)
100.0
200
STIL04
IPt1=Ipt2=10mA
VR(OUT)=400V
STIL06
IPt1=Ipt2=10mA
VR(OUT)=400V
190
180
170
10.0
160
150
140
130
Tj(°C)
1.0
Tj(°C)
120
0
25
50
75
100
125
150
Figure 17: Reverse current versus junction
temperature with driver current (typical
values) (STIL08)
0
25
50
75
100
125
150
Figure 18: Forward voltage drop for one
power switch versus junction temperature
(typical values)
VF(V)
IR(OUT)ON(µA)
1.16
220
STIL08
IPt1=Ipt2=10mA
VR(OUT)=400V
1.14
1.12
STIL06
Iout=6A
1.10
200
1.08
STIL08
Iout=8A
1.06
1.04
180
1.02
1.00
STIL04
Iout=4A
0.98
160
0.96
Tj(°C)
Tj(°C)
0.94
140
0.92
0
25
50
75
100
125
150
0
25
50
75
100
125
150
7/11
STIL
Figure 19: Peak forward voltage drop versus
peak forward output current for one power
switch (typical values) (STIL04)
Figure 20: Peak forward voltage drop versus
peak forward output current for one power
switch (typical values) (STIL06)
IOUT(A)
IOUT(A)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
12
11
STIL04
10
9
8
Tj=150°C
7
Tj=25°C
6
5
4
3
2
1
VF(V)
0
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Figure 21: Peak forward voltage drop versus
peak forward output current for one power
switch (typical values) (STIL08)
STIL06
Tj=150°C
Tj=25°C
VF(V)
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8
Figure 22: Relative variation of dV/dt immunity
versus junction temperature (typical values)
IOUT(A)
{dVD(OUT) [Tj] / dt} / {dVD(OUT) [Tj=150°C] / dt}
20
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
STIL08
18
VDout=470V
16
Tj=150°C
14
12
Tj=25°C
10
8
6
4
2
VF(V)
Tj(°C)
0
0.0
8/11
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
25
50
75
100
125
150
STIL
Figure 23: PENTAWATT HV2 Package Mechanical Data
DIMENSIONS
A
REF.
C
Millimeters
Min.
Max.
Min.
Max.
A
4.19
7.70
0.165
0.185
C
1.14
1.40
0.044
0.055
D
2.5
2.72
0.098
0.107
E
0.38
0.51
0.015
0.020
F
0.66
0.82
0.026
0.032
H2
L7
L6
D
L3
E
Inches
G
2.54 Typ.
0.10 Typ.
G2
7.62 Typ.
0.30 Typ.
H2
10.04
L3
10.29
23.5 Typ.
L6
9.90
10.16
0.395
0.405
0.925 Typ.
0.389
0.400
F
G
L7
G2
1.52 Typ.
0.059 Typ.
Figure 24: PENTAWATT Terminals Package Mechanical Data
DIMENSIONS
REF.
H2
A
L8
L7
L6
L3
Max.
Min.
Max.
A
4.19
7.70
0.165
0.303
C
1.14
1.40
0.045
0.055
D
2.5
2.72
0.098
0.107
E
0.38
0.51
0.015
0.020
F
0.66
0.82
0.026
0.032
G
2.54 Typ.
0.100 Typ.
G2
7.62 Typ.
0.300 Typ.
H2
D
L3
E
G
G2
9/11
F
Inches
Min.
Diam
C
Millimeters
10.03
10.29
28.68 Typ.
0.394
0405
1.129 Typ.
L6
8.23
8.49
0.324
0.334
L7
6.15
6.25
0.242
0.246
L8
Diam.
2.74 Typ.
3.71
3.96
0.108 Typ.
0.146
0.156
STIL
In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These
packages have a Lead-free second level interconnect . The category of second level interconnect is
marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The
maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an
ST trademark. ECOPACK specifications are available at: www.st.com.
Table 6: Ordering Information
■
■
■
Part Number
Marking
Package
Weight
Base qty
Delivery
mode
STIL04-P5
STIL04P5
PENTAWATT HV2
1.9 g
50
Tube
STIL04-T5
STIL04T5
PENTAWATT
3g
50
Tube
STIL06-T5
STIL06T5
PENTAWATT
3g
50
Tube
STIL08-T5
STIL08T5
PENTAWATT
3g
50
Tube
Epoxy meets UL94, V0
Cooling method: by conduction (C)
Recommended torque value: 0.8 Nm.
Table 7: Revision History
Date
Revision
October-2002
3A
Description of Changes
23-Nov-2004
4
STIL08-T5 added
06-Dec-2005
5
STIL04-T5 and STIL06-T5 added. ECOPAK statement
added
Last update.
10/11
STIL
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of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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All other names are the property of their respective owners
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11/11