AMPLIFIERS. TPS5904A Datasheet

TPS5904A Datasheet PDF


Part

TPS5904A

Description

OPTOISOLATED FEEDBACK AMPLIFIERS

Manufacture

etcTI

Page 12 Pages
Datasheet
Download TPS5904A Datasheet


TPS5904A Datasheet
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
D TL1431 Precision Programmable Reference
(2.5 V) and an Optocoupler in a Single
Package
D Reference Voltage Tolerance
− TPS5904 0.8%
− TPS5904A 0.4%
D Controlled Optocoupler CTRs:
− TPS5904 100% to 400%
− TPS5904A 150% to 300%
D High Withstand Voltage (WTV), 7500 V Peak
for 1 Minute
D Safety Regulatory Approvals
− UL . . . File Number E65085
− FIMKO, SEMKO, NEMKO, DEMKO
− EN60065/IEC 65
− EN60950/IEC 950
− VDE 0884, Level 4 (6000-V Insulation)
SOES016D − MAY 1995 − REVISED JANUARY 1998
DCS OR P PACKAGE
(TOP VIEW)
LED
COMP
GND
FB
1
2
3
4
8 NC
7C
6E
5 NC
NC − No internal connection
description
The TPS5904 and TPS5904A optoisolated feedback amplifiers consist of the industry standard TL1431
precision programmable reference and an optocoupler. Reference-voltage tolerance for the TPS5904 is
0.8%, and for the TPS5904A, 0.4%. The 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. Each device is supplied
in an 8-pin DIP or in an 8-pin gull-wing surface-mount package (DCS).
typical application
+
+
VI
PWM
Control
VO
TPS5904: Reference-voltage tolerance, 0.8%
CTR Range, 100% to 400%
TPS5904A: Reference-voltage tolerance, 0.4%
CTR Range, 150% to 300%
7 TPS5904/A 1
2
64
3
R1
R2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 1998, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
1

TPS5904A Datasheet
TPS5904, TPS5904A
OPTOISOLATED FEEDBACK AMPLIFIERS
SOES016D − MAY 1995 − REVISED JANUARY 1998
functional block diagram
LED 1
7C
COMP
FB
GND
2
4
3
6E
TERMINAL
NAME NO.
C7
COMP
2
E6
FB 4
GND
3
LED 1
NC 5, 8
Terminal Functions
I/O
Phototransistor collector
O Light-emitting diode and TL431 cathodes
Phototransistor emitter
I Feedback
Ground
I Light-emitting diode anode
No connection
DESCRIPTION
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.
2 POST OFFICE BOX 655303 DALLAS, TEXAS 75265
POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443


Features Datasheet pdf TPS5904, TPS5904A OPTOISOLATED FEEDBACK AMPLIFIERS D TL1431 Precision Programm able Reference (2.5 V) and an Optocoupl er in a Single Package D Reference Volt age Tolerance − TPS5904 0.8% − TPS5 904A 0.4% D Controlled Optocoupler CTRs : − TPS5904 100% to 400% − TPS5904A 150% to 300% D High Withstand Voltage (WTV), 7500 V Peak for 1 Minute D Safet y Regulatory Approvals − UL . . . Fil e Number E65085 − FIMKO, SEMKO, NEMKO , DEMKO − EN60065/IEC 65 − EN60950/ IEC 950 − VDE 0884, Level 4 (6000-V I nsulation) SOES016D − MAY 1995 − R EVISED JANUARY 1998 DCS OR P PACKAGE (T OP VIEW) LED COMP GND FB 1 2 3 4 8 N C 7C 6E 5 NC NC − No internal connec tion description The TPS5904 and TPS5 904A optoisolated feedback amplifiers c onsist of the industry standard TL1431 precision programmable reference and an optocoupler. Reference-voltage toleran ce for the TPS5904 is 0.8%, and for the TPS5904A, 0.4%. The devices are primar ily intended for use as the error-amplifier/reference/ isolation-amplifier element in i.
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