TIL5942NFD_技术文档

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

NFC or NFD PACKAGE

TL1431, Optocoupler, and Advanced

Current-Mode-PWM in a 16-Pin DIP

(TOP VIEW)

LinBiCMOS Current-Mode-PWM Operates

at Frequencies up to 1 MHz

FB

INPUT_GND

COMP

IS

1

2

3

4

16

15

14

13

12

11

VC

100-µA Maximum Start-up Current

RT/CT

PWM_GND

REF

2-A, 30-ns MOSFET Drive Output

BIAS

TL1431 Voltage Reference/Feedback

Amplifier

V

CC

NC

7

8

10 REG

7500-V Peak Withstand Voltage

9

OUT

Available With Gull Wing VDE Lead Forms

–40°C to 100°C 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)

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 –40°C to 100°C 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

PLASTIC DUAL-IN-LINE

WITH VDE LEAD FORM,

THROUGH-HOLE

PLASTIC DUAL-IN-LINE

WITH VDE LEAD FORM,

SURFACE-MOUNT LEADS

T

A

–40°C to 100°C TIL5942NFC, TIL5942ANFC TIL5942NFD, TIL5942ANFD

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.

1

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

functional block diagram

11

V

CC

Voltage

Reference

Voltage

Regulator

10

REG

13

PWM_GND

12

14

REF

Driver

9

Oscillator

RT/CT

D

Q

OUT

Primary

CLK

Secondary

I

R

(VC)

IB(IS)

4

3

BIAS

LED

COMP

1

2

FB

TL1431X

INPUT_GND

1V

16

15

IS

VC

Terminal Functions

TERMINAL

NAME

I/O

DESCRIPTION

NO.

1

FB

I

Feedback. FB is an error-amplifier inverting input.

Ground connection for the voltage reference/error amplifier section.

INPUT_GND

COMP

2

3

O

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.

BIAS

4

I

OptocouplerLED anode. BIAS connects to the output voltage of the dc/dc converter or to some other suitable

supply voltage through a resistor.

NC

7,8

9

No connection.

OUT

REG

O

I

Drive output. OUT is a pulse-width-modulated output.

Regulator output. A 0.1-µF, typical, ceramic capacitor should be connected between REG and PWM_GND.

Supply voltage for PWM controller

10

11

12

13

14

15

16

V

CC

REF

O

I

PWM 5-V reference output

PWM_GND

RT/CT

VC

PWM ground connection

Connection for external RC network to set PWM oscillator frequency

Connection for integrating capacitor (0.1µF typ) to PWM_GND (terminal 13)

PWM current sense input

IS

I

2

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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 V

is greater than the turn-on threshold voltage level. Typically the

CC

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 V of 5 V, which controls the

ref

chiplogicandcanbeusedforlow-powerexternalapplications. AvoltageV isalsogeneratedtosupplycurrent

reg

to charge an external capacitor C , which supplies instant current for the pulsing output.

reg

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, C charges toward the 5-V reference through timing resistor

T

R for a time given by one time constant R C . The oscillator period is given by:

T

T T

T

= R C + 0.125 µs.

T T

OSC

A current I

the voltage V

supplied out of IS biases the current-sense resistor on the primary side of the power supply. If

IB(IS)

at IS exceeds 1 V, the output pulse is reset. An internal current source I

supplies a nominal

(IS)

(VC)

current of –4 µA 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

current, a net current is being sourced and the capacitor is charged. When I

current, a net current is being sinked and the capacitor is discharged. When I

is greater than the photodiode

(VC)

is lower than the photodiode

is equal to the photodiode

(VC)

current, the capacitor voltage stays constant. The voltage at VC is monitored by an internal comparator with

a threshold voltage given by V + 2Vd, where Vd is a diode voltage drop of typically 0.7 V.

(IS)

Whenever VC is below this threshold, the output pulse is reset. The output pulse is enabled if V

1 V and VC is greater than its threshold.

is less than

(IS)

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

R

(see Note A)

T

RT/CT

C

T

PWM_GND

NOTE A: t

osc

= R C + 0.125 µs

T T

Figure 1. Typical Oscillator Application

3

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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, V , BIAS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 37 V

CC

Input current range at FB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –50 µA to 10 mA

LED forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA

Input LED reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V

PWM section

Supply voltage range, V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 30 V

CC

Input voltage at IS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to 5 V

Continuous supply current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 mA

CC

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, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 100°C

A

Storage temperature range, T

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 150°C

stg

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C

†

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

T

≤ 25°C

DERATING FACTOR

T

= 70°C

T = 85°C

A

PACKAGE

POWER RATING

ABOVE T = 25°C

POWER RATING POWER RATING

A

NFD

NFC

1000 mW

8 mW/°C

640 mW

520 mW

1000 mW

recommended operating conditions

MIN MAX

UNIT

V

Supply voltage range, V , PWM

CC

11

30

2

Peak output current, I

Output current, REF

A

O

0

10

20

mA

kHz

kΩ

nF

Oscillator frequency, f

osc

1000

39

External timing resistance, R

2

T

External timing capacitance, C

0.47

10

T

4

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

electrical characteristics over recommended operating junction temperature range, V

= 17 V,

CC

R = 3.9 kΩ, C = 1 nF (unless otherwise noted)

T

voltage reference/error amplifier

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

T

= 25°C,

A

TIL5942

2.48

2.5

2.52

V

= V

I(FB)

O(COMP)

V

ref

Reference voltage

I

= 10 mA,

I(LED)

See Figure 2

TIL5942A

2.49

2.5

25

2.51

V

T

V

= 25°C to 100°C,

A

Deviation of reference voltage over

temperature

= V

O(COMP)

= 10 mA,

I(FB)

V

mV

ref(dev)

I

I(LED)

See Figure 2

V

ref

∆V

= 4 V to 37 V,

= 10 mA

Ratio of reference voltage change to

change in input light-emitting-diode voltage

I(LED)

1.1

2

3

mV/V

V

I

I(LED)

= 10 mA,

R3 = 10 kΩ

I(LED)

I

Feedback input current

1.5

0.5

µA

mA

µA

I(FB)

See Figure 4

I

T

= 10 mA,

= 25°C to 100°C

R3 = 10 kΩ,

See Figure 4

Deviation of reference input current over

full temperature range

I(LED)

A

ref(dev)

DRV(min)

I(off)

T

V

= 25°C,

A

Minimum drive current

0.4

1

= V

O(COMP)

I(FB)

V

= 37 V,

V

I(FB)

= 0

I(LED)

Off-state input light-emitting diode current

Regulator output impedance

0.18

0.1

0.5

See Figure 5

V

= V

f ≤ 1 kHz

O(COMP)

†

Zka

I

= 1 mA to 50 mA

†

This symbol is not currently listed within EIA or JEDEC standards for semiconductor symbology.

LED

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

1.4

UNIT

V

F

Forward voltage

LED reverse current

T

= 25°C,

V

= V

,

I = 10 mA, See Figure 2

I(LED)

1.2

A

O(COMP)

I(FB)

I

R

V

= 6 V

10

µA

O

PWM Section

voltage reference

PARAMETER

Reference voltage

TEST CONDITIONS

= 1 mA, = 25°C

MIN

TYP

MAX

5.05

50

UNIT

V

I

T

J

4.95

5

ref

O

V

Reference line regulation

Reference load regulation

V

= 11 V to 30 V

mV

ref(line reg)

CC

V

I

O

= 0 mA to 20 mA

= 25°C to 100°C

= 25°C to –40°C

25

ref(load reg)

T

–4

A

V

Reference temperature regulation

ref(temp reg)

T

A

oscillator

PARAMETER

TEST CONDITIONS

R = 3.9 kΩ, C = 1 nF

MIN

225

100

TYP

250

148

0.5

MAX

275

UNIT

kHz

ns

f

t

Frequency

osc

Dead time, (minimum off time)

Minimum timing ramp voltage

Peak timing ramp voltage

200

(off)

V

3.2

V

5

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

electrical characteristics over recommended operating junction temperature range, V

= 15 V,

CC

R = 3.9 kΩ, C = 1 nF (unless otherwise noted) (continued)

T

current sense

PARAMETER

TEST CONDITIONS

MIN

TYP

–4

MAX

UNIT

µA

ns

I

t

Input bias current, IS

Delay time to output

Current sense threshold

–10

IB(IS)

70

d

V

0.9

1.0

1.1

V

IT(CS)

integrating capacitor current

PARAMETER

TEST CONDITIONS

MIN

TYP

–5

8

MAX

UNIT

µA

I

Capacitor integrating current at VC with LED off

Photodiode light current at VC, I – I

I

= 0

–10

O(cap)

I(LED)

= 10 mA,

T

A

= 25°C

5

µA

L

(VC)(on) (VC)(off)

I(LED)

PWM (pulse-width modulation)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Maximum duty cycle

C

= 1 nF,

C

= 0.1 µF

97%

L

REG

Minimum duty cycle

= 1 nF,

0

UVLO (under voltage lockout)

PARAMETER

TEST CONDITIONS

MIN

15

9

TYP

16

MAX

17

UNIT

V

Start-up threshold voltage

IT(H)

Minimum operating voltage after start-up

10

11

V

IT(L)

supply current

PARAMETER

Start-up current

Operating supply current

MIN

TYP

55

MAX

100

16

UNIT

µA

I

V

< 15 V

> 11 V

CC(off)

CC

8

13

mA

CC(on)

CC

output section

PARAMETER

MIN TYP

MAX

UNIT

I

= –20 mA

11

11.7

11.2

0.78

1.38

20

O

V

High-level output voltage

Low-level output voltage

V

OH

= –200 mA

= 20 mA

= 200 mA

= 25°C,

10.5

0.9

2

V

OL

t

Rise time

Fall time

T

C

= 1 nF

35

ns

r

J

L

T

= 25°C,

20

f

regulator

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

V

Regulator output Voltage

V

= 17 V

12

12.5

13.5

O(REG)

CC

= 0 V

O

I

Regulator short-circuit output current

–9 –12.5 –15.0

mA

OS(REG)

6

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

PARAMETER MEASUREMENT INFORMATION

I

I(LED)

I

I(LED)

16

15

14

13

12

11

10

9

16

15

14

13

12

11

10

9

1

A

+

V

F

PWM

With

Photo-

Diode

PWM

With

Photo-

Diode

–

R1

V

2

4

2

4

V

I(LED)

V

+

V

O(COMP)

V

ref

R2

–

3

Figure 3. ∆V /∆V

Test Circuit

Figure 2. V , V , I

Test Circuit

ref

I(LED)

ref

F

min

I

I(off)

I

I(LED)

16

15

14

13

12

11

10

9

16

15

14

13

12

11

10

9

1

A

I

I(FB)

PWM

With

Photo-

Diode

PWM

With

Photo-

Diode

2

4

2

4

A

V

I(LED)

V

R3

V

ref

3

Figure 5. I

Test Circuit

Figure 4. I

Test Circuit

I(off)

I(FB)

7

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

TYPICAL CHARACTERISTICS

Table of Graphs

FIGURE

6

V

LED forward voltage

Free-air temperature

F

V

ref

Input reference voltage

7

I

Feedback input current

8

I(FB)

CC(on)

On-state supply current

PWM reference voltage

PWM regulator voltage

9

V

ref

10

11

12

13

14

15

16

17

18

19

20

21

22

V

reg

PWM relative oscillator frequency

Integrating capacitor current

Photodiode current source

Sense current source

I

t

I

(VC)

L

IB(IS)

(off)

PWM dead time

PWM regulator short-circuit current

Low-state output voltage

PWM turn-on threshold voltage

PWM turn-off threshold voltage

OS(REG)

V

OL(1)

V

OL(2)

V

IT(H)

V

IT(L)

PWM threshold voltages showing hysteresis Free-air temperature

8

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

INPUT REFERENCE VOLTAGE

vs

FREE-AIR TEMPERATURE

1.35

1.3

3

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

I

= 10 mA

I(LED)

I

= 10 mA

I(LED)

1.25

1.2

1.15

1.1

1.05

1

2.1

2

0.95

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 6

Figure 7

FEEDBACK INPUT CURRENT

vs

FREE-AIR TEMPERATURE

ON-STATE SUPPLY CURRENT

vs

FREE-AIR TEMPERATURE

1.8

1.6

1.4

1.2

1

14.2

I

= 10 mA

V

CC

= 17 V

I(LED)

R = 10 kΩ

14

13.8

13.6

13.4

13.2

13

0.8

0.6

0.4

0.2

0

12.8

12.6

12.4

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 8

Figure 9

9

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

PWM REGULATOR VOLTAGE

vs

FREE-AIR TEMPERATURE

5.05

5.04

5.03

5.02

5.01

5

12.53

V

= 17 V

= 10 mA

CC

V

CC

= 17 V

I

O

12.52

12.51

12.5

4.99

4.98

4.97

12.49

12.48

4.96

4.95

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 10

Figure 11

PWM RELATIVE OSCILLATOR FREQUENCY

INTEGRATING CAPACITOR CURRENT

vs

FREE-AIR TEMPERATURE

1.025

1.02

1.015

1.01

1.005

1

0

–1

–2

–3

–4

–5

V

CC

= 17 V

–6

–7

–8

0.995

0.99

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 12

Figure 13

10

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

TYPICAL CHARACTERISTICS

PHOTODIODE CURRENT SOURCE

SENSE CURRENT SOURCE

vs

FREE-AIR TEMPERATURE

vs

FREE-AIR TEMPERATURE

12

10

0

–1

–2

–3

–4

–5

V

= 17 V

CC

I

= 10 mA

L(LED)

8

6

4

–6

–7

–8

2

0

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 14

Figure 15

PWM DEAD TIME

vs

FREE-AIR TEMPERATURE

PWM REGULATOR SHORT-CIRCUIT CURRENT

vs

FREE-AIR TEMPERATURE

170

165

160

155

150

145

18

16

14

12

10

8

6

140

135

130

4

2

0

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 16

Figure 17

11

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

TIL5942, TIL5942A

CURRENT-MODE-PWM CONTROLLER

WITH OPTOISOLATED VOLTAGE REFERENCE AND ERROR AMPLIFIER

SOES040 – OCTOBER 1997

TYPICAL CHARACTERISTICS

LOW-STATE OUTPUT VOLTAGE

vs

LOW-STATE OUTPUT VOLTAGE

vs

FREE-AIR TEMPERATURE

2

1.8

1.6

1.4

1.2

1

1.5

1.48

1.46

1.44

1.42

1.4

I

O

= 200 mA

V

= 17 V

= 20 mA

CC

I

O

0.8

0.6

0.4

1.38

1.36

1.34

0.2

0

1.32

1.3

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 18

Figure 19

PWM TURN-ON THRESHOLD VOLTAGE

PWM TURN-OFF THRESHOLD VOLTAGE

vs

FREE-AIR TEMPERATURE

16.25

16.2

10.25

10.2

10.15

10.1

10.05

10

I

O

= 200 mA

16.15

16.1

16.05

16

15.95

15.9

9.95

9.9

15.85

9.85

15.8

9.8

15.75

9.75

–40 –20

0

20

40

60

80

100

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

T

A

– Free-Air Temperature – °C

Figure 20

Figure 21

12

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

18

16

V

IT(H)

14

12

10

8

IT(L)

6

4

2

0

–40 –20

0

20

40

60

80

100

T

A

– Free-Air Temperature – °C

Figure 22

13

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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.

REF DES

PART NUMBER

DESCRIPTION

IC, PWM controller

VENDOR

1

U1

TIL5942NFC

Texas Instruments

International Rectifier (IR)

Teccor Electronics

Panasonic

2

U2

uA79M12CKC

IRFBC40

IC, voltage regulator

3

Q1

N-ch MOSFET 8A/600 V

4

Q2

S4015L

SCR 100 V

5

MV1

BD1

RT1

CR1

CR2

CR3

CR4

CR5

CR6

CR7

C1

ERZ-V10D431

BR86D

MOV, 275 V

6

Bridge, 2A/600 V

Diodes, Inc.

Keystone

7

CL–80

Thermistor

8

1N4148CT

Rectifier, 100mA/100 V

Diodes, Inc.

International Rectifier (IR)

Philips

9

1N4148CT

Rectifier, 100mA/100 V

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

6TQ045

Rectifier, 7.5A/45 V

31DF2

Rectifier, 3A/200 V

11DF2

Rectifier, 1A/200 V

BYV26C

Rectifier, 1A/600 V

1N5232BCT

Zener diode 5.6 V

Diodes, Inc.

Panasonic

ECQ-U2A334MV

ECK-DGL471MB

ECO-S2GP121CA

ECE-A1EFS101

ECK-D3A332KBP

ECU-S2A104KBA

ECU-S2A333KBA

ECU-S2A471KBA

ECU-S2A222KBA

ECE-A1AFS471

ECA–1AFQ222

ECU-S2A104KBA

ECE-A1EFS471

ECU-S2A471KBA

ECE-A1EFS101

ECU-S2A104KBA

ECE-A1EFS471

ECE-A1EFS101

ECU-S2A104KBA

ECK-DGL471MB

ECU-S2A104KBA

ECU-S2A471KBA

ECU-S1J102JCB

Capacitor, film, 0.33 µF/250Vac/20%

Capacitor, film, 470 pF/250Vac/20%

Capacitor, electrolytic, 120 µF/400 V

Capacitor, electrolytic, 100 µF/25 V

Capacitor, ceramic, 3300 pF/1000 V

Capacitor, ceramic, 0.1 µF/100 V

Capacitor, ceramic, 0.033 µF/100 V

Capacitor, ceramic, 470 pF/100 V

Capacitor, ceramic, 2200 pF/100 V

Capacitor, electrolytic, 470 µF/10 V

Capacitor, electrolytic, 2200 µF/10 V

Capacitor, ceramic, 0.1 µF/100 V

Capacitor, electrolytic, 470 µF/25 V

Capacitor, ceramic, 470 pF/100 V

Capacitor, electrolytic, 100 µF/25 V

Capacitor, ceramic, 0.1 µF/100 V

Capacitor, electrolytic, 470 µF/25 V

Capacitor, electrolytic, 100 µF/25 V

Capacitor, ceramic, 0.1 µF/100 V

Capacitor, film, 470 pF/250Vac

Capacitor, ceramic, 0.1 µF/100 V

Capacitor, ceramic, 470 pF/100 V

Capacitor, ceramic, 1000 pF/63 V

C2

Panasonic

C3

Panasonic

C4

Panasonic

C5

Panasonic

C6

Panasonic

C7

Panasonic

C8

Panasonic

C9

Panasonic

C10

C11

C12

C13

C14

C15

C16

C17

C18

C19

C20

C21

C22

C23

C24

C25

C26

C27

Panasonic

15

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

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

REF DES

PART NUMBER

DESCRIPTION

VENDOR

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

C28

C29

R1

ECU-S1J105MEB

ECU-S1J102JCB

Capacitor, ceramic, 1 µF/63 V

Capacitor, ceramic, 1000 pF/100 V

Resistor, MF, 680 kΩ, 1/2 W, 5%

Resistor, MF, 750 kΩ, 2 W, 5%

Resistor, MF, 4.7 Ω, 1/4 W, 5%

Resistor, MF, 150 Ω, 1/4 W, 5%

Resistor, MF, 0.62 Ω, 1/4 W, 5%

Resistor, MF, 10 kΩ, 2 W, 5%

Resistor, MF, 47 Ω, 1/4 W, 5%

Resistor, MF, 100 Ω, 1/4 W, 5%

Resistor, MF, 12 kΩ, 1/4 W, 5%

Resistor, MF, 100 Ω, 1/4 W, 5%

Resistor, MF, 2.4 kΩ, 1/4 W, 5%

5 kΩ, 1/4 W, POT

Panasonic

R2

R3

R4

R5

R6

R7

R8

R9

R10

R11

R12

R13

R14

R15

R16

R17

R18

T1

3306F-502-ND

Bourns

Resistor, MF, 100 Ω, 1 W, 5%

Resistor, MF, 100 Ω, 1/4 W, 5%

Resistor, MF, 150 kΩ, 1/4 W, 5%

Resistor, MF, 1 kΩ, 1/4 W, 5%

Resistor, MF, 4.7 kΩ, 2 W, 5%

Transformer, turns ratio

Common mode filter

CYX01-13940-X4

0571-0203-01

Colitronics

Bel

L1

L2

PCV-0-0050-10

Inductor, choke

Coilcraft

Bel

L3

Inductor, choke

F1

Fuse, 3AG

FH1

HS1

HS4

P1

F052-ND

Fuseclip

F052-ND

Fuseclip

PF430

Heat sink Q1

Thermalloy

Power Dynamics

Waldom

PF430

Heat sink CR3

42R05-3143-150

WM4403ND

Connector, input

P2

Connector, output

JMP1

JMP2

JMP3

PWB

Strap

PC board

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

0.050 (1,27)

0.010 (0,25)

M

9

0.010 (0,25) NOM

0.260 (6,60)

0.240 (6,10)

0.410 (10,41)

0.390 (9,91)

1

8

Gage Plane

0.790 (20,07)

0.782 (19,86)

0.010 (0,25)

0.039 (0,99)

0.029 (0,74)

0°–8°

0.180 (4,57)

0.160 (4,06)

Seating Plane

0.004 (0,10)

0.154 (3,91)

0.146 (3,71)

0.020 (0,51) MIN

4073330/A 08/97

NOTES: A. All linear dimensions are in inches (millimeters).

B. This drawing is subject to change without notice.

17

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

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

8

0.058 (1,47)

0.042 (1,07)

0.154 (3,91)

0.146 (3,71)

0.180 (4,57)

0.160 (4,06)

0.020 (0,51) MIN

Seating Plane

0.125 (3,18) NOM

0.024 (0,61)

0.016 (0,41)

0.010 (0,25)

M

0.010 (0,25) NOM

0.410 (10,41)

0.390 (9,91)

0.100 (2,54)

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

PACKAGE OPTION ADDENDUM

www.ti.com

2-Mar-2009

PACKAGING INFORMATION

Orderable Device

Status ⁽¹⁾

Package Package

Pins Package Eco Plan ⁽²⁾Lead/Ball Finish MSL Peak Temp ⁽³⁾

Qty

Type

PDIP

SOP

PDIP

SOP

Drawing

TIL5942ANFC

TIL5942ANFD

TIL5942NFC

TIL5942NFD

OBSOLETE

NFC

16

TBD

Call TI

NFD

NFC

NFD

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in

a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

(2)

Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check

http://www.ti.com/productcontent for the latest availability information and additional product content details.

TBD: The Pb-Free/Green conversion plan has not been defined.

Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements

for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered

at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.

Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and

package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS

compatible) as defined above.

Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame

retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material)

(3)

MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder

temperature.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is

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information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI

to Customer on an annual basis.

Addendum-Page 1

IMPORTANT NOTICE

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Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265


型号：	TIL5942NFD
厂家：	TEXAS INSTRUMENTS
描述：	2A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO16, PLASTIC, DSO-16 信息通信管理开关光电二极管
文件：	总20页 (文件大小：290K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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