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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
D D D D D D D D D
TL1431, Optocoupler, and Advanced Current-Mode-PWM in a 16-Pin DIP LinBiCMOSTM Current-Mode-PWM Operates at Frequencies up to 1 MHz 100-A Maximum Start-up Current 2-A, 30-ns MOSFET Drive Output TL1431 Voltage Reference/Feedback Amplifier 7500-V Peak Withstand Voltage Available With Gull Wing VDE Lead Forms - 40C to 100C Free-Air Operating Temperature Range Safety Regulatory Approvals Pending - UL . . . File Number E65085 - FIMKO, SEMKO, NEMKO, DEMKO - EN60065/IEC 65 - EN60950/IEC 950 - VDE 0884, Level 4 (6000-V Insulation)
NFC or NFD PACKAGE (TOP VIEW)
FB INPUT_GND COMP BIAS
1 2 3 4
16 15 14 13 12 11
NC NC
7 8
10 9
IS VC RT/CT PWM_GND REF VCC REG OUT
description
The TIL5942 and TIL5942A consist of an advanced current-mode-PWM controller and a TL1431 adjustable precision shunt regulator, incorporated in a single package. The controller provides a photodetector, an improved MOSFET drive output, and an LED for isolation. The TL1431 is configured as a precision reference/error amplifier. Using the TIL5942 or the TIL5942A, the power-supply designer can implement the controller for an isolated dc/dc converter or off-line switching power supply, with one IC and a few passive components. The TIL5942 standard version has a reference voltage tolerance of 0.8% and the TIL5942A has a reference voltage tolerance of 0.4% These controllers are available in a 16-pin PDIP with a lead form for through-hole, or gull-wing lead form for surface-mount applications. These devices operate over a - 40C to 100C junction temperature range. End equipment applications for the TIL5942 and the TIL5942A include isolated ac-to-dc power supplies and dc/dc converters.
AVAILABLE OPTIONS PACKAGED DEVICES TA PLASTIC DUAL-IN-LINE WITH VDE LEAD FORM, THROUGH-HOLE TIL5942NFC, TIL5942ANFC PLASTIC DUAL-IN-LINE WITH VDE LEAD FORM, SURFACE-MOUNT LEADS TIL5942NFD, TIL5942ANFD
- 40C to 100C
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. LinBiCMOS is a trademark of Texas Instruments Incorporated.
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 (c) 1997, Texas Instruments Incorporated
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
functional block diagram
VCC 11 Voltage Reference Voltage Regulator 10
PWM_GND
13
REG
REF
12
RT/CT
14
Driver Oscillator Primary Secondary I(VC) IIB(IS) CLK R D Q
9
OUT
BIAS
4 LED
COMP FB INPUT_GND
3 1 2 1V 16 15 IS VC
TL1431X
Terminal Functions
TERMINAL NAME FB INPUT_GND COMP BIAS NC OUT REG VCC REF PWM_GND RT/CT VC IS NO. 1 2 3 4 7,8 9 10 11 12 13 14 15 16 I O O I O I I/O I I O I DESCRIPTION Feedback. FB is an error-amplifier inverting input. Ground connection for the voltage reference/error amplifier section. Error amplifier output/LED cathode connection. RC networks may be connected between COMP, FB, and GND to stabilize the control loop of the dc/dc converter. Optocoupler LED anode. BIAS connects to the output voltage of the dc/dc converter or to some other suitable supply voltage through a resistor. No connection. Drive output. OUT is a pulse-width-modulated output. Regulator output. A 0.1-F, typical, ceramic capacitor should be connected between REG and PWM_GND. Supply voltage for PWM controller PWM 5-V reference output PWM ground connection Connection for external RC network to set PWM oscillator frequency Connection for integrating capacitor (0.1F typ) to PWM_GND (terminal 13) PWM current sense input
2
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
theory of operation
The current through the LED is controlled by the precision reference amplifier according to the voltage error at FB, with respect to the internal 2.5-V reference. The light emitted by the LED is coupled to the PWM controller to change the modulation duty cycle and reduce the error voltage. The PWM controller is in the off state until VCC is greater than the turn-on threshold voltage level. Typically the controller turns on at 16 V. It stays in the on state until the voltage drops below the turn-off threshold of 10 V typical. Upon turning on, the controller generates an internal reference voltage Vref of 5 V, which controls the chip logic and can be used for low-power external applications. A voltage Vreg is also generated to supply current to charge an external capacitor Creg, which supplies instant current for the pulsing output. The oscillator shown in Figure 1 consists of an external resistance-capacitance (RC) network, a voltage comparator, logic, a 125-ns one-shot for the dead time, and a MOSFET used to discharge the external capacitor to ground each cycle. At the end of the reset period, CT charges toward the 5-V reference through timing resistor RT for a time given by one time constant RTCT. The oscillator period is given by: TOSC = RTCT + 0.125 s. A current IIB(IS) supplied out of IS biases the current-sense resistor on the primary side of the power supply. If the voltage V(IS) at IS exceeds 1 V, the output pulse is reset. An internal current source I(VC) supplies a nominal current of -4 A as a reference. This current charges a capacitor connected between VC and ground. The photodiode is connected internally in parallel with the capacitor. The light-generated photodiode current tends to discharge the capacitor until a steady-state balance is reached. When I(VC) is greater than the photodiode current, a net current is being sourced and the capacitor is charged. When I(VC) is lower than the photodiode current, a net current is being sinked and the capacitor is discharged. When I(VC) is equal to the photodiode current, the capacitor voltage stays constant. The voltage at VC is monitored by an internal comparator with a threshold voltage given by V(IS) + 2Vd, where Vd is a diode voltage drop of typically 0.7 V. Whenever VC is below this threshold, the output pulse is reset. The output pulse is enabled if V(IS) is less than 1 V and VC is greater than its threshold. The 5-V reference on the PWM chip is brought out on REF and can be used as a reference and/or supply for external circuits as long as the output current is limited to 20 mA and the power dissipation is not exceeded. It is recommended that a 0.1-F ceramic capacitor be connected between REF and PWM_GND.
REF RT (see Note A) RT/CT CT PWM_GND
NOTE A: tosc = RTCT + 0.125 s
Figure 1. Typical Oscillator Application
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
LED/REF section Supply voltage range, VCC, BIAS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to 37 V Input current range at FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -50 A to 10 mA LED forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA Input LED reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V PWM section Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to 30 V Input voltage at IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to 5 V Continuous supply current, ICC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mA entire package Isolation voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5 kV peak or dc (5.3 kVrms) Total continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to 100C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55C to 150C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260C
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. DISSIPATION RATING TABLE PACKAGE NFD NFC TA 25C POWER RATING 1000 mW 1000 mW DERATING FACTOR ABOVE TA = 25C 8 mW/C 8 mW/C TA = 70C POWER RATING 640 mW 640 mW TA = 85C POWER RATING 520 mW 520 mW
recommended operating conditions
MIN Supply voltage range, VCC, PWM Peak output current, IO Output current, REF Oscillator frequency, fosc External timing resistance, RT External timing capacitance, CT 0 10 2 0.47 11 MAX 30 2 20 1000 39 10 UNIT V A mA kHz k nF
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
electrical characteristics over recommended operating junction temperature range, VCC = 17 V, RT = 3.9 k, CT = 1 nF (unless otherwise noted)
voltage reference/error amplifier
PARAMETER TEST CONDITIONS TA = 25C, VO(COMP) = VI(FB) II(LED) = 10 mA, See Figure 2 TA = 25C to 100C, VO(COMP) = VI(FB) II(LED) = 10 mA, See Figure 2 VI(LED) = 4 V to 37 V, II(LED) = 10 mA II(LED) = 10 mA, See Figure 4 II(LED) = 10 mA, TA = 25C to 100C TA = 25C, VO(COMP) = VI(FB) VI(LED) = 37 V, See Figure 5 VO(COMP) = VI(FB) IO(COMP) = 1 mA to 50 mA VI(FB) = 0 f 1 kHz R3 = 10 k R3 = 10 k, See Figure 4 TIL5942 TIL5942A MIN 2.48 2.49 TYP 2.5 2.5 MAX 2.52 2.51 UNIT V V
Vref f
Reference voltage
Vref(dev)
Deviation of reference voltage over temperature
25
mV
DVref DV I(LED)
II(FB) Iref(dev) IDRV(min) II(off) Zka
Ratio of reference voltage change to change in input light-emitting-diode voltage Feedback input current Deviation of reference input current over full temperature range Minimum drive current Off-state input light-emitting diode current Regulator output impedance
1.1
2
mV/V A A
1.5 0.5 0.4 0.18 0.1
3
1 0.5
mA A
This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.
LED
PARAMETER VF IR Forward voltage LED reverse current TA = 25C, VO = 6 V TEST CONDITIONS VO(COMP) = VI(FB), II(LED) = 10 mA, See Figure 2 MIN TYP 1.2 MAX 1.4 10 UNIT V A
PWM Section
voltage reference
PARAMETER Vref Vref(line reg) Vref(load reg) Vref(temp reg) f(t ) Reference voltage Reference line regulation Reference load regulation Reference temperature regulation TEST CONDITIONS IO = 1 mA, TJ = 25C VCC = 11 V to 30 V IO = 0 mA to 20 mA TA = 25C to 100C TA = 25C to -40C MIN 4.95 TYP 5 MAX 5.05 50 25 -4 -4 UNIT V mV mV mV mV
oscillator
PARAMETER fosc t(off) Frequency Dead time, (minimum off time) Minimum timing ramp voltage Peak timing ramp voltage TEST CONDITIONS R = 3.9 k, C = 1 nF MIN 225 100 TYP 250 148 0.5 3.2 MAX 275 200 UNIT kHz ns V V
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
electrical characteristics over recommended operating junction temperature range, VCC = 15 V, RT = 3.9 k, CT = 1 nF (unless otherwise noted) (continued)
current sense
PARAMETER IIB(IS) td VIT(CS) Input bias current, IS Delay time to output Current sense threshold 0.9 TEST CONDITIONS MIN TYP -4 70 1.0 1.1 MAX -10 UNIT A ns V
integrating capacitor current
PARAMETER IO(cap) IL Capacitor integrating current at VC with LED off Photodiode light current at VC, I(VC)(on) - I(VC)(off) TEST CONDITIONS II(LED) = 0 II(LED) = 10 mA, TA = 25C MIN 5 TYP -5 8 MAX -10 UNIT A A
PWM (pulse-width modulation)
PARAMETER Maximum duty cycle Minimum duty cycle CL = 1 nF, CL = 1 nF, TEST CONDITIONS CREG = 0.1 F CREG = 0.1 F MIN TYP 97% 0 MAX UNIT
UVLO (under voltage lockout)
PARAMETER VIT(H) VIT(L) Start-up threshold voltage Minimum operating voltage after start-up TEST CONDITIONS MIN 15 9 TYP 16 10 MAX 17 11 UNIT V V
supply current
PARAMETER ICC(off) ICC(on) Start-up current Operating supply current VCC < 15 V VCC > 11 V TEST CONDITIONS MIN 8 TYP 55 13 MAX 100 16 UNIT A mA
output section
PARAMETER VOH VOL tr tf High-level High level output voltage Low-level Low level output voltage Rise time Fall time TEST CONDITIONS IO = -20 mA IO = -200 mA IO = 20 mA IO = 200 mA TJ = 25C, TJ = 25C, CL = 1 nF CL = 1 nF MIN 11 10.5 TYP 11.7 11.2 0.78 1.38 20 20 0.9 2 35 35 MAX UNIT V V ns ns
regulator
PARAMETER VO(REG) Regulator output Voltage IOS(REG) Regulator short-circuit output current VCC = 17 V VO = 0 V TEST CONDITIONS MIN 12 -9 TYP 12.5 -12.5 MAX 13.5 -15.0 UNIT V mA
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
PARAMETER MEASUREMENT INFORMATION
II(LED) A + V - V VO(COMP) + V - Vref 3 VF 2 4 PWM With PhotoDiode 1 16 15 14 13 12 11 10 9 R2 Vref 3 V VI(LED) R1 2 4 PWM With PhotoDiode II(LED) 1 16 15 14 13 12 11 10 9
Figure 2. Vref, VF , Imin Test Circuit
II(LED) 1 II(FB) A V R3 3 2 4 PWM With PhotoDiode
Figure 3. Vref /VI(LED) Test Circuit
II(off) 16 15 14 13 12 11 10 9 V Vref 3 VI(LED) 2 4 PWM With PhotoDiode A 1 16 15 14 13 12 11 10 9
Figure 4. II(FB) Test Circuit
Figure 5. II(off) Test Circuit
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS Table of Graphs
FIGURE VF Vref II(FB) ICC(on) Vref Vreg I(VC) IL IIB(IS) t(off) IOS(REG) VOL(1) VOL(2) VIT(H) VIT(L) LED forward voltage Input reference voltage Feedback input current On-state supply current PWM reference voltage PWM regulator voltage PWM relative oscillator frequency Integrating capacitor current Photodiode current source Sense current source PWM dead time PWM regulator short-circuit current Low-state output voltage Low-state output voltage PWM turn-on threshold voltage PWM turn-off threshold voltage PWM threshold voltages showing hysteresis Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature Free-air temperature 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS
LED FORWARD VOLTAGE vs FREE-AIR TEMPERATURE
1.35 II(LED) = 10 mA 1.3 VF - LED Forward Voltage - V 1.25 Vref - Input Reference Voltage - V 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2 -40 -20 0 20 40 60 80 100 1.2 1.15 1.1 1.05 1 0.95 -40 3 2.9 2.8 II(LED) = 10 mA
INPUT REFERENCE VOLTAGE vs FREE-AIR TEMPERATURE
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 6
FEEDBACK INPUT CURRENT vs FREE-AIR TEMPERATURE
1.8 1.6 I I(FB) - Feedback Input Current - A 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -40 II(LED) = 10 mA R = 10 k 14.2
Figure 7
ON-STATE SUPPLY CURRENT vs FREE-AIR TEMPERATURE
VCC = 17 V I CC(on) - On-State Supply Current - mA 14 13.8 13.6 13.4 13.2 13 12.8 12.6 12.4 -40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 8
Figure 9
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS
PWM REFERENCE VOLTAGE vs FREE-AIR TEMPERATURE
5.05 5.04 Vref - PWM Reference Voltage - V 5.03 5.02 5.01 5 4.99 4.98 4.97 4.96 4.95 -40 -20 0 20 40 60 80 100 12.48 -40 VCC = 17 V IO = 10 mA Vreg - PWM Regulator Voltage - V 12.52 12.53 VCC = 17 V
PWM REGULATOR VOLTAGE vs FREE-AIR TEMPERATURE
12.51
12.5
12.49
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 10
PWM RELATIVE OSCILLATOR FREQUENCY vs FREE-AIR TEMPERATURE
1.025 PWM Relative Oscillator Frequency - kHz I (VC) - Integrating Capacitor Current - A VCC = 17 V 1.02 1.015 1.01 1.005 1 0 -1 -2 -3 -4 -5 -6 -7 -8 -40
Figure 11
INTEGRATING CAPACITOR CURRENT vs FREE-AIR TEMPERATURE
0.995 0.99 -40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 12
Figure 13
10
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS
PHOTODIODE CURRENT SOURCE vs FREE-AIR TEMPERATURE
12 VCC = 17 V IL(LED) = 10 mA Photodiode Current Source - A I IB(IS) - Sense Current Source - A 10 0 -1 -2 -3 -4 -5 -6 -7 -8 -40
SENSE CURRENT SOURCE vs FREE-AIR TEMPERATURE
8
6
4
2
0 -40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 14
PWM DEAD TIME vs FREE-AIR TEMPERATURE
170 165 t (off) - PWM Dead Time - ns 160 155 150 145 140 135 130 -40 I OS(REG) - PWM Regulator Short-Circuit Current - mA
Figure 15
PWM REGULATOR SHORT-CIRCUIT CURRENT vs FREE-AIR TEMPERATURE
18 16 14 12 10 8 6 4 2 0 -40
-20
0
20
40
60
80
100
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 16
Figure 17
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS
LOW-STATE OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
2 1.8 VOL(1) - Low-State Output Voltage - V 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 -40 -20 0 20 40 60 80 100 VCC = 17 V IO = 20 mA 1.5 IO = 200 mA 1.48 VOL(2) - Low-State Output Voltage - V 1.46 1.44 1.42 1.4 1.38 1.36 1.34 1.32 1.3 -40 -20 0 20 40 60 80 100
LOW-STATE OUTPUT VOLTAGE vs FREE-AIR TEMPERATURE
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 18
PWM TURN-ON THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE
16.25 VIT(H) - PWM Turn-On Threshold Voltage - V 16.2 16.15 16.1 16.05 16 15.95 15.9 15.85 15.8 15.75 -40 -20 0 20 40 60 80 100 VIT(L) - PWM Turn-Off Threshold Voltage - V IO = 200 mA 10.25 10.2 10.15 10.1 10.05 10 9.95 9.9 9.85 9.8 9.75 -40 -20
Figure 19
PWM TURN-OFF THRESHOLD VOLTAGE vs FREE-AIR TEMPERATURE
0
20
40
60
80
100
TA - Free-Air Temperature - C
TA - Free-Air Temperature - C
Figure 20
Figure 21
12
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TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
TYPICAL CHARACTERISTICS
PWM THRESHOLD VOLTAGES SHOWING HYSTERESIS vs FREE-AIR TEMPERATURE
PWM Threshold Voltages Showing Hysteresis - V 18 16 VIT(H) 14 12 VIT(L) 10 8 6 4 2 0 -40
-20
0
20
40
60
80
100
TA - Free-Air Temperature - C
Figure 22
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13
SOES040 - OCTOBER 1997
TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
14
RT1 L1 BR1 T1 AC + + C4 120 F, 400 V R18 IN CR6 U2 uA79M12CKC 4 GND GND OUT 5 - 12 V C6 J2 C20 100 F, CR5 25 V + C19 470 F + C21 0.1 F, 63 V C3 470 pF, 250 V SECONDARY t MV1 275 V C1 0.33 F, 250 V AC - C2 470 pF, 250 V R8 L2 3 12 V CR4 C15 470 F, C10 L3 1 5V CR1 + C5 100 F, 25 V C22 Q1 IRFBC40 R11 1 k C23 R12 R15 16 15 C24 0.1 F C27 1000 pF R10 12 k 14 13 12 11 C28 1 F, 63 V 10 9 C7 0.1 F C25 0.1 F, 63 V 1 2 3 4 R16 5 6 NC 7 NC 8 NC C8 C9 R14 100 R13 C13 0.1 F CR7 Q2 CR3 C12 2200 F, + C11 470 F, + C14 0.1 F R17 + C17 100 F, + C18 0.1 F R2 750 k C16 R9 C29 100 0.001 F, 100 V 2 GND R7 R3 4.7
L
F1 3A
R1 680 k, 0.5 W
N
Template Release Date: 7-11-94
J1
APPLICATION INFORMATION
POST OFFICE BOX 655303 * DALLAS, TEXAS 75265 R5 0.62 C26 470 pF
U1 TIL5942, TIL5942A
NC
CR2 R4 150 R6 1O k
Figure 23. Off-Line Power-Supply Application
TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
Table 1. Bill of Materials for TIL5942 and TIL5942A Off-Line Power-Supply
ITEM NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 REF DES U1 U2 Q1 Q2 MV1 BD1 RT1 CR1 CR2 CR3 CR4 CR5 CR6 CR7 C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 C26 C27 PART NUMBER TIL5942NFC uA79M12CKC IRFBC40 S4015L ERZ-V10D431 BR86D CL-80 1N4148CT 1N4148CT 6TQ045 31DF2 11DF2 BYV26C 1N5232BCT ECQ-U2A334MV ECK-DGL471MB ECK-DGL471MB ECO-S2GP121CA ECE-A1EFS101 ECK-D3A332KBP ECU-S2A104KBA ECU-S2A333KBA ECU-S2A471KBA ECU-S2A222KBA ECE-A1AFS471 ECA-1AFQ222 ECU-S2A104KBA ECU-S2A104KBA ECE-A1EFS471 ECU-S2A471KBA ECE-A1EFS101 ECU-S2A104KBA ECE-A1EFS471 ECE-A1EFS101 ECU-S2A104KBA ECK-DGL471MB ECK-DGL471MB ECU-S2A104KBA ECU-S2A104KBA ECU-S2A471KBA ECU-S1J102JCB DESCRIPTION IC, PWM controller IC, voltage regulator N-ch MOSFET 8A/600 V SCR 100 V MOV, 275 V Bridge, 2A/600 V Thermistor Rectifier, 100mA/100 V Rectifier, 100mA/100 V Rectifier, 7.5A/45 V Rectifier, 3A/200 V Rectifier, 1A/200 V Rectifier, 1A/600 V Zener diode 5.6 V Capacitor, film, 0.33 F/250Vac/20% Capacitor, film, 470 pF/250Vac/20% Capacitor, film, 470 pF/250Vac/20% Capacitor, electrolytic, 120 F/400 V Capacitor, electrolytic, 100 F/25 V Capacitor, ceramic, 3300 pF/1000 V Capacitor, ceramic, 0.1 F/100 V Capacitor, ceramic, 0.033 F/100 V Capacitor, ceramic, 470 pF/100 V Capacitor, ceramic, 2200 pF/100 V Capacitor, electrolytic, 470 F/10 V Capacitor, electrolytic, 2200 F/10 V Capacitor, ceramic, 0.1 F/100 V Capacitor, ceramic, 0.1 F/100 V Capacitor, electrolytic, 470 F/25 V Capacitor, ceramic, 470 pF/100 V Capacitor, electrolytic, 100 F/25 V Capacitor, ceramic, 0.1 F/100 V Capacitor, electrolytic, 470 F/25 V Capacitor, electrolytic, 100 F/25 V Capacitor, ceramic, 0.1 F/100 V Capacitor, film, 470 pF/250Vac Capacitor, film, 470 pF/250Vac Capacitor, ceramic, 0.1 F/100 V Capacitor, ceramic, 0.1 F/100 V Capacitor, ceramic, 470 pF/100 V Capacitor, ceramic, 1000 pF/63 V VENDOR Texas Instruments Texas Instruments International Rectifier (IR) Teccor Electronics Panasonic Diodes, Inc. Keystone Diodes, Inc. Diodes, Inc. International Rectifier (IR) International Rectifier (IR) International Rectifier (IR) Philips Diodes, Inc. Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic Panasonic
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
15
TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
Table 1. Bill of Materials for TIL5942 and TIL5942A Off-Line Power-Supply (Continued)
ITEM NO. 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 REF DES C28 C29 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 T1 L1 L2 L3 F1 FH1 FH1 HS1 HS4 P1 P2 JMP1 JMP2 JMP3 PWB F052-ND F052-ND PF430 PF430 42R05-3143-150 WM4403ND CYX01-13940-X4 0571-0203-01 PCV-0-0050-10 PCV-0-0050-10 3306F-502-ND PART NUMBER ECU-S1J105MEB ECU-S1J102JCB DESCRIPTION Capacitor, ceramic, 1 F/63 V Capacitor, ceramic, 1000 pF/100 V Resistor, MF, 680 k, 1/2 W, 5% Resistor, MF, 750 k, 2 W, 5% Resistor, MF, 4.7 , 1/4 W, 5% Resistor, MF, 150 , 1/4 W, 5% Resistor, MF, 0.62 , 1/4 W, 5% Resistor, MF, 10 k, 2 W, 5% Resistor, MF, 47 , 1/4 W, 5% Resistor, MF, 100 , 1/4 W, 5% Resistor, MF, 100 , 1/4 W, 5% Resistor, MF, 12 k, 1/4 W, 5% Resistor, MF, 100 , 1/4 W, 5% Resistor, MF, 2.4 k, 1/4 W, 5% 5 k, 1/4 W, POT Resistor, MF, 100 , 1 W, 5% Resistor, MF, 100 , 1/4 W, 5% Resistor, MF, 150 k, 1/4 W, 5% Resistor, MF, 1 k, 1/4 W, 5% Resistor, MF, 4.7 k, 2 W, 5% Transformer, turns ratio Common mode filter Inductor, choke Inductor, choke Fuse, 3AG Fuseclip Fuseclip Heat sink Q1 Heat sink CR3 Connector, input Connector, output Strap Strap Strap PC board Thermalloy Thermalloy Power Dynamics Waldom Colitronics Bel Coilcraft Coilcraft Bel Bourns VENDOR Panasonic Panasonic
16
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
MECHANICAL DATA
NFD (R-PDSO-G14) PLASTIC SMALL-OUTLINE PACKAGE
0.100 (2,54) 16 9
0.050 (1,27)
0.010 (0,25) M
0.010 (0,25) NOM 0.260 (6,60) 0.240 (6,10) 0.410 (10,41) 0.390 (9,91) 1 0.790 (20,07) 0.782 (19,86) 0.010 (0,25) 0- 8 0.180 (4,57) 0.160 (4,06) 0.039 (0,99) 0.029 (0,74) 8
Gage Plane
Seating Plane 0.154 (3,91) 0.146 (3,71) 0.020 (0,51) MIN 0.004 (0,10) 4073330/A 08/97 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice.
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
17
TIL5942, TIL5942A CURRENT-MODE-PWM CONTROLLER WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER
SOES040 - OCTOBER 1997
MECHANICAL DATA
NFC (R-PDIP-T14) PLASTIC DUAL-IN-LINE PACKAGE
0.790 (20,07) 0.782 (19,86) 16 9
0.260 (6,60) 0.240 (6,10)
1 0.058 (1,47) 0.042 (1,07)
8
0.154 (3,91) 0.146 (3,71)
0.020 (0,51) MIN
0.180 (4,57) 0.160 (4,06)
Seating Plane 0.125 (3,18) NOM
0.024 (0,61) 0.016 (0,41) 0.100 (2,54)
0.010 (0,25) M
0.010 (0,25) NOM 0.410 (10,41) 0.390 (9,91)
4110451/A 08/97 NOTES: A. All linear dimensions are in inches (millimeters). B. This drawing is subject to change without notice.
18
POST OFFICE BOX 655303
* DALLAS, TEXAS 75265
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Copyright (c) 1998, Texas Instruments Incorporated

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