TI TPS5904A

TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
Precision Programmable Reference (2.5 V)
DCS OR P PACKAGE
(TOP VIEW)
and an Optocoupler in a Single Package
Reference Voltage Tolerance
– TPS5904
0.8%
– TPS5904A 0.5%
Controlled Optocoupler CTRs:
– TPS5904
100% to 400%
– TPS5904A 150% to 300%
High Withstand Voltage (WTV), 7500 V Peak
for 1 Minute
Safety Regulatory Approvals Pending
– UL
– FIMKO, SEMKO, NEMKO, DEMKO
– EN60065/IEC 65
– EN60950/IEC 950
– VDE 0884, Level 4 (6000-V Insulation)
LED
COMP
GND
FB
1
8
2
7
3
6
4
5
NC
C
E
NC
NC – No internal connection
Description
The TPS5904 and TPS5904A optoisolated feedback amplifiers consist of a precision programmable reference
and an optocoupler. Reference-voltage tolerance for the TPS5904 is 0.8%, and for the TPS5904A is 0.5%.
These devices are primarily intended for use as the error-amplifier/reference/isolation-amplifier element in
isolated ac-to-dc power supplies and dc/dc converters. The optocoupler is a gallium-arsenide (GaAs)
light-emitting diode that emits at a wavelength of 940 nm, combined with a silicon phototransistor. The current
transfer ratio (CTR) ranges from 100% to 400% in the standard version. The TPS5904A version with a
150%-to-300% CTR is available for higher-performance applications. When using the TPS5904 or TPS5904A,
power supply designers can reduce component count and save space in tightly packaged designs. The
tight-tolerance reference eliminates the need for adjustments in many applications.
The TPS5904 and TPS5904A are characterized for operation from –40°C to 100°C and each device is supplied
in an 8-pin DIP or in an 8-pin gull-wing surface-mount package (DCS).
Typical Application
+
+
VI
VO
PWM
Control
7
TPS5904/A
1
2
6
TPS5904: Reference-voltage tolerance, 0.8%
CTR Range, 100% to 400%
TPS5904A: Reference-voltage tolerance, 0.5%
CTR Range, 150% to 300%
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R1
4
R2
3
Copyright  2000, TAOS Inc.
Texas Advanced Optoelectronic Solutions Inc.
800 Jupiter Road, Suite 205 Plano, TX 75074 (972) 673-0759
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TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
Functional Block Diagram
LED
COMP
FB
GND
7
1
C
2
6
4
E
3
Terminal Functions
TERMINAL
NAME
NO.
C
7
COMP
2
E
6
FB
4
GND
3
LED
1
NC
5, 8
I/O
DESCRIPTION
Phototransistor collector
O
Light-emitting diode and TL431 cathodes
Phototransistor emitter
I
Feedback
Ground
I
Light-emitting diode anode
No connection
Absolute Maximum Ratings at 25°C free-air temperature (unless otherwise noted)†
Input power dissipation at (or below) TA = 25°C (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 mW
Input LED current, II(LED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Input LED voltage, VI(LED) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 V
Input diode reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V
Output power dissipation at (or below) TA = 25°C (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 mW
Output collector-to-emitter voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Output emitter-to-collector voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Output collector current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
Total continuous power dissipation at (or below) TA = 25°C (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . 350 mW
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 100°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C
Total input-to-output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 kV peak or dc (5.3 kVrms)
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Flammability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 4)
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. Derate linearly from 25°C at a rate of 2.95 mW/°C.
2. Derate linearly from 25°C at a rate of 1.76 mW/°C.
3. Derate linearly from 25°C at a rate of 4.12 mW/°C.
4. Optocoupler total-package flame retardancy is tested to IEC695-2-2 using a flame application time of 30 seconds. Outer mold
compound is verified to meet UL 94V-0.
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2
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
Electrical Characteristics, TA = 25°C (unless otherwise noted)
Input
PARAMETER
TEST CONDITIONS
VF
Light-emitting diode forward voltage
VO(COMP) = VI(FB),
See Figure 1
IR
Light-emitting diode reverse current
VR = 6 V
TPS5904
†
MIN
TYP
MAX
1.2
1.4
V
10
µΑ
2.48
2.5
2.52
2.49
2.5
2.51
II(LED) = 10 mA,
VO(COMP) = VI(FB),
See Figure 1
II(LED) = 10 mA,
VO(COMP) = VI(FB),
TA = 25°C to 100°C,
II(LED) = 10 mA,
See Figure 1
UNIT
Vref
Reference voltage
Vref(dev)
Deviation of reference voltage over
temperature
∆Vref
∆VI(LED)
Ratio of reference voltage change-to∆VI(LED) = 4 V to 37 V,
change in input light-emitting-diode voltage See Figure 2
II(FB)
Feedback input current
II(LED) = 10 mA,
See Figure 3
R3 = 10 kΩ ,
Iref(dev)
Deviation of reference input current over
temperature
II(LED) = 10 mA,
TA = 25°C to 100°C,
R3 = 10 kΩ,
See Figure 3
0.5
IDRV(min)
Minimum drive current
VO(COMP) = VI(FB),
See Figure 1
0.45
1
mA
II(off)
Off-state input light-emitting-diode current
VI(LED) = 37 V,
See Figure 4
VI(FB) = 0,
0.18
0.5
µΑ
|Zka|†
Regulator output impedance
VO(COMP) = VI(FB),
f ≤ 1 kHz,
IO(COMP) = 1 mA to 50 mA
TPS5904A
25
II(LED) = 10 mA,
V
mV
–1.1
–2
mV/V
1.5
3
µΑ
µΑ
Ω
0.1
This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.
Output
PARAMETER
TEST CONDITIONS
ICEO
Collect dark current
VCE = 35 V,
V(BR)ECO
Emitter-collector voltage breakdown
IE = 100 µA
MIN
TYP
See Figure 5
MAX
UNIT
100
nA
7
V
Coupler
PARAMETER
TEST CONDITIONS
TPS5904
†
MIN
VO(COMP) = VI(FB),
VCE = 5 V,
II(LED) = 5 mA,
See Figure 6
Collector-emitter saturation voltage
VO(COMP) = VI(FB),
IC = 1 mA,
II(LED) = 10 mA,
See Figure 6
Viso†
Isolation voltage
IIO = 10 µA,
f = 60 Hz
Cio
Input to output capacitance
VIO = 0,
f = 1 kHz
CTR
Current transfer ratio
VCE(sat)
TPS5904A
TYP
MAX
100%
400%
150%
300%
0.1
7500
0.2
UNIT
V
V
0.6
pF
This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.
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3
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
PARAMETER MEASUREMENT INFORMATION
II(LED)
A
II(LED)
7
1
7
1
+
VF
V
–
R1
2
6
4
V
VO(COMP)
+
V
V
Vref
6
4
R2
–
2
VI(LED)
Vref
3
3
Figure 2. ∆Vref/∆VI(LED) Test Circuit
Figure 1. Vref, VF, Imin Test Circuit
II(off)
II(LED)
7
1
7
1
A
II(FB)
A
2
V
2
VI(LED)
6
4
6
4
V
R3
Vref
3
3
Figure 3. II(FB) Test Circuit
Figure 4. II(off) Test Circuit
ICEO
ICEO
1
II(LED)
7
2
2
6
+
V
–
6
4
V
VO(COMP)
Vref
3
3
Figure 6. CTR, VCE(sat) Test Circuit
Figure 5. ICEO Test Circuit
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4
A
VCE
VCE
4
7
1
A
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
TYPICAL CHARACTERISTICS
INPUT LIGHT-EMITTING-DIODE CURRENT
vs
REFERENCE VOLTAGE
1400
II(LED) – Input Light-Emitting-Diode Current – mA
II(LED) – Input Light-Emitting-Diode Current – µ A
INPUT LIGHT-EMITTING-DIODE CURRENT
vs
REFERENCE VOLTAGE
VO(COMP) = VI(FB)
TA = 25°C
1200
800
600
400
200
0
0
0.5
1
1.5
2
2.5
3
60
VO(COMP) = VI(FB)
TA = 25°C
50
40
30
20
10
0
0
Vref – Reference Voltage – V
0.5
1
Vref / VI(LED) – Ratio of Delta Reference Voltage
to Delta LED Voltage – V
VO(COMP) = VI(FB)
II(LED) = 10 mA
Vref – Reference Voltage – V
2.52
2.51
2.5
2.49
2.48
25
50
75
TA – Free-Air Temperature – °C
100
– 0.95
VI(LED) = 4 V to 37 V
II(LED) = 10 mA
– 1.05
– 1.15
– 1.25
– 1.35
– 1.45
– 50
– 25
0
25
50
75
100
TA – Free-Air Temperature – °C
Figure 9
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3
RATIO OF DELTA REFERENCE
VOLTAGE TO DELTA LED VOLTAGE
vs
FREE-AIR TEMPERATURE
2.53
0
2.5
Figure 8
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
– 25
2
Vref – Reference Voltage – V
Figure 7
2.47
– 50
1.5
Figure 10
5
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
TYPICAL CHARACTERISTICS
OFF-STATE INPUT
LIGHT-EMITTING-DIODE CURRENT
vs
FREE-AIR TEMPERATURE
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
2.5
0.25
VI(LED) = 37 V
I I(off) – Off-State Input Light-Emitting-Diode
Current – µ A
I I – Reference Current – µ A
II(LED) = 10 mA
R3 = 10 kΩ
2
1.5
1
0.5
0
– 25
0
25
50
75
100
0.2
0.15
0.1
0.05
0
– 50
TA – Free-Air Temperature – °C
0
– 25
25
NORMALIZED CURRENT TRANSFER RATIO
RELATIVE TO VALUE AT TA = 25°C
vs
FREE-AIR TEMPERATURE
10000
1.2
VCE = 5 V
VO(COMP) = VI(FB)
IA = 5 mA
CTR – Normalized Current Transfer Ratio
Relative to Value at TA = 25 °C
VCE = 35 V
I CEO – Collector Dark Current – nA
100
Figure 12
COLLECTOR DARK CURRENT
vs
FREE-AIR TEMPERATURE
1000
100
10
1
– 25
0
25
50
75
TA – Free-Air Temperature – °C
100
1
0.8
0.6
0.4
0.2
0
– 50
– 25
0
25
50
75
100
TA – Free-Air Temperature – °C
Figure 13
Figure 14
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6
75
TA – Free-Air Temperature – °C
Figure 11
0.1
– 50
50
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
TYPICAL CHARACTERISTICS
COLLECTOR-TO-EMITTER SATURATION VOLTAGE
vs
FREE-AIR TEMPERATURE
VCE(sat) – Collector-to-Emitter Saturation Voltage – V
CURRENT TRANSFER RATIO
vs
INPUT LIGHT-EMITTING-DIODE CURRENT
300
CTR – Current Transfer Ratio – %
VCE = 5 V
250
200
150
100
50
0
1
2
3
5
10
20
30
50
0.20
II(LED) = 10 mA
IC = 1 mA
0.18
0.16
0.14
0.12
0.10
0.08
– 50
– 25
0
50
75
100
TA – Free-Air Temperature – °C
II(LED) – Input Light-Emitting-Diode Current – mA
Figure 15
I I(LED) – Input Light-Emitting-Diode Forward Current – mA
25
Figure 16
INPUT LIGHT-EMITTING-DIODE FORWARD CURRENT
vs
LIGHT-EMITTING-DIODE FORWARD VOLTAGE
60
50
40
TA = 75°C
30
TA = 25°C
20
TA = –25°C
10
0
0.8
0.9
1
1.1
1.2
1.3
1.4
VF – Light-Emitting-Diode Forward Voltage – V
Figure 17
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7
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
MECHANICAL DATA
DCS
PLASTIC DUAL SMALL-OUTLINE OPTO COUPLER
0.023 (0,58)
0.013 (0,33)
0.092 (2,34) TYP
0.045 (1,14)
0.035 (0,89)
0.055 (1,40)
0.045 (1,14)
8
5
0.405 (10,29)
0.385 (9,78)
0.008 (0,20) NOM
0.260 (6,60)
0.240 (6,10)
1
Gage Plane
4
0.055 (1,40)
0.035 (0,89)
0.100 (2,54)
0.390 (9,91)
0.370 (9,40)
0°–5°
0.010 (0,25)
0.030 (0,76) MIN
0.150 (3,81) MAX
Seating Plane
0.020 (0,51) MAX
0.004 (0,10)
NOTES: A. All linear dimensions are in inches(millimeters).
B. This drawing is subject to change without notice.
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8
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
MECHANICAL DATA
P
PLASTIC DUAL-IN-LINE PACKAGE
0.400 (10,60)
0.355 (9,02)
8
5
0.260 (6,60)
0.240 (6,10)
1
4
0.070 (1,78) MAX
0.310 (7,87)
0.290 (7,37)
0.020 (0,51) MIN
0.200 (5,08) MAX
Seating Plane
0.125 (3,18) MIN
0.100 (2,54)
0.021 (0,53)
0.015 (0,38)
0°–15°
0.010 (0,25) M
0.010 (0,25) NOM
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
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9
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
TAOS017 – SEPTEMBER 1999
PRODUCTION DATA — information in this document is current at publication date. Products conform to
specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard
warranty. Production processing does not necessarily include testing of all parameters.
NOTICE
Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this
document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised
to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems.
TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product
design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that
the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular
purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any
and all liability, including without limitation consequential or incidental damages.
TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR
USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY
RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY
UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK.
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