Datasheet LTC3765, LTC3766 Datasheet (Linear Technology)

DESCRIPTION

DEMO MANUAL DC2199A-A

LTC3765/LTC3766

360W Isolated Forward Converter

with Synchronous Rectification

Demonstration circuit 2199A-A is a 360W isolated forward converter

with synchronous rectification featuring the LTC3765/LTC3766. It produces a regulated 12V, 30A output from an input voltage range of 36V to 60V.

This circuit was designed to demonstrate the high levels of performance, efficiency, and small solution size attain able using converter and other applications. It has a 4.7in

these parts in an active-clamp-reset forward

power supply, suitable for telecom, industrial,

2

solution footprint

ciency exceeding 96%. Secondary-side control eliminates complex opto-coupler feedback, providing fast transient response with minimum output capacitance. For other output requirements, see the LTC3766 data sheet or contact the LT C sales.

-

Design files for this circuit board are available at

http://www.linear.com/demo/DC2199A-A

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

area. Synchronous rectification helps to attain an effi-

PERFORMANCE SUMMARY

SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS

V

IN

V

OUT

I

OUT

f

SW

V

OUT(P-P)

I

REG

P

OUT/PIN

Input Supply Range 36 60 V

Output Voltage 11.76 12.0 12.24 V

Output Current Range, Continuous 200LFM 0 30 A

Switching (Clock) Frequency 200 kHz

Output Ripple VIN = 24V, I

Output Regulation Line and Load (36VIN to 60VIN, 0A

Efficiency (See Figure 3) VIN =48V, I

Isolation Basic 1500 VDC

Approximate Solution Size Component Area × Top Component Height 4.7in

Specifications are at TA = 25°C

= 30A (20MHz BW) 60 mV

OUT

to 30A

OUT

= 30A 96 %

OUT

) ±0.02 %

OUT

2

× 0.6 Inches

P-P

dc2199aafa

1

DEMO MANUAL DC2199A-A

OPERATING PRINCIPLES

The LTC3765 active clamp forward controller and gate driver is used on the primary and provides start-up, gate drive, and protection functions. Once start-up is accom plished, the LTC3766 high efficiency, secondary-side synchronous forward controller takes over, and provides the LTC3765 with timing information and bias power through a small pulse transformer.

When input voltage is applied, the LTC3765 commences soft-start of the output voltage. When the output reaches the RUN threshold, the LTC3766 comes alive and takes control by sending encoded PWM gate pulses to the LTC3765 through T2. These pulses also provide primary bias power efficiently over a wide input voltage range.

The transition from primary to secondary control occurs at some fraction of the nominal output voltage. From then on, operation and design is reduced to that of a simple

-

QUICK START PROCEDURE

buck converter. Secondary control eliminates delays, tames large-signal overshoot, and reduces output capacitance needed to meet transient response requirements.

An optional LC filter stage on the input lowers RMS input current. The filter must have output impedance that is less than the converter input impedance to assure stability. This may require a damping impedance, which is provided by R1. (See Linear Technology Application Note 19 for a discussion of input filter stability.) R1 is coupled through a tiny 2mm × 2mm inductor L1, and provides damping with arbitrarily low source impedance. For bench testing, an electrolytic capacitor has been added at the input ter minals to provide suitable ripple current capability. The values below the converter switching frequency, thus avoiding high circulating currents in the filter.

selected have a filter resonant frequency that is

-

Demonstration circuit 2199A-A is easy to set up to evalu ate the Figure follow the procedure below:

NOTE: When measuring the output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the output voltage ripple probe capacitor as shown in Figure 1.

1. Set an input power supply that is capable of 36V to 60V

2. Direct an airflow of 200LFM across the unit for sustained

3. With power off, connect the supply to the input terminals

performance of the LTC3765/LTC3766. Refer to

1 for proper measurement equipment setup and

by touching the

tip and ground ring directly across the last output

to 36V. Then turn off the supply.

operation at full load.

and –VIN.

+V

IN

a. Input voltages lower than 36V can keep the converter

from turning on due to the undervoltage lockout feature of the LTC3765/LTC3766.

-

b. If efficiency measurements are desired, an ammeter

capable of measuring 15ADC or a resistor shunt can be put in series with the input supply in order to measure the DC2199A-A’s input current.

c. A voltmeter with a capability of measuring at least

60V can be placed across the input terminals in order to get an accurate input voltage measurement.

4. Turn on the power at the input.

NOTE: Make sure that the input voltage never ex

ceeds 60V.

Check for the proper output voltage of 12V. Turn off

5. the power at the input.

6. Once the proper output voltages are established, con nect a variable load capable of sinking 30A at 12V to

output terminals +V

the for 0A.

a. If efficiency measurements are desired, an ammeter

or a resistor shunt that is capable of handling 30ADC can be put in series with the output load in order to measure the DC2199A-A’s output current.

OUT

and –V

. Set the current

OUT

-

2

dc2199aafa

QUICK START PROCEDURE

EFFICIENCY? (%)

98

POWER DISSIPATION (W)

18

dc2199aa F02

DEMO MANUAL DC2199A-A

b. A voltmeter with a capability of measuring at least 12V

can be placed across the output terminals in order to get an accurate output voltage measurement.

7. Turn on the power at the input.

NOTE. If there is no output, temporarily disconnect the

load to make sure that the load is not set too high.

8. Once the proper output voltage is again established,

adjust the load within the operating range and observe the output voltage regulation, ripple voltage, efficiency and other desired parameters.

Figure 1. Proper Measurement Equipment Setup

97

96

95

94

93

92

91

90

0

10 205 15

I

OUT

(A)

36V 48V 60V 48V

IN IN IN IN_PD

16

14

12

10

8

6

4

2

3025

Figure 2. Efficiency and Power Dissipation

dc2199aafa

3

DEMO MANUAL DC2199A-A

QUICK START PROCEDURE

Figure 3. Output Ripple at 48VIN and 30A

(50mV, 10A, 2µs/DIV, 20MHz)

OUT

Figure 4. Transient Response Waveform at 48V

4

and 15A to 30A to 15A

IN

(10A, 500mV, 200µs/DIV)

OUT

dc2199aafa

QUICK START PROCEDURE

DEMO MANUAL DC2199A-A

Figure 5. Thermal Map, Front Side at 48VIN and 30A

(TA = 25°C, 200LFM)

OUT

Figure 6. Thermal Map, Back Side at 48V

and 30A

IN

(TA = 25°C, 200LFM)

OUT

dc2199aafa

5

DEMO MANUAL DC2199A-A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 2 C1, C22 Cap., Alum., Elect., 33µF, 80V, CAP-10X12.5 PANASONIC, EEHZA1K330P

2 5 C2, C3, C4, C5, C6 CAP., X7R, 4.7µF, 100V, 10%, 1210 MURATA, GRM32ER72A475KE14

3 4 C7, C31, C33, C68 CAP., POSCAP, 150µF, 16V, 20%, 7343 PANASONIC, 16TQC150MYF

4 1 C10 CAP., X7R, 2.2nF, 630V, 5%, 1206 MURATA, GRM31A7U2J222JW31

5 1 C11 CAP., X7R, 0.015µF, 25V, 10%, 0603 AVX, 06033C153K AT2A

6 2 C24, C71 CAP., X7R, 1.0µF, 16V, 10%, 0805 MURATA, GRM21BR71C105KA01

7 1 C30 CAP., X7R, 2200pF, 250V, 10%, 1812 MURATA, GA343QR7GD222KW01L

8 1 C34 CAP., X5R, 22µF, 16V, 20%, 1206/1210 MURATA, GRM32ER71C226MEA8L

9 1 C51 CAP., C0G, 470pF, 630V, 5%, 1206 MURATA, GRM31A5C2J471JW01

10 1 C66 CAP., X7R, 0.047µF, 200V, X7R, 10% 1206 MURATA, GRM31CR72D473KW03

11 1 C69 CAP., X7R, 1.5nF, 630V, 5%, 1206 MURATA, GRM31A7U2J152JW31

12 2 C70, C76 CAP., X7R, 3.3nF, 25V, 10%, 0603 AVX, 06033C332KAT2A

13 2 C72, C102 CAP., X7R, 0.1µF, 25V, 10%, 0805 AVX, 08053C104KAT2A

14 4 C55, C73, C80, C119 CAP., X7R, 1nF, 25V, 10%, 0603 MURATA, GRM188R71E102KA01

15 1 C75 CAP., NPO, 100pF, 25V, 5%, 0603 AVX, 06033A101J AT2A

16 1 C77

17 1 C78 CAP., NPO, 0.033µF, 25V, 5%, 0805 TDK, C2012C0G1E333J

18 1 C79 CAP., X7R, 4.7nF, 25V, 10%, 0603 MURATA, GRM188R71E472KA01

19 1 C101 CAP., NPO, 220pF, 25V, 5%, 0603 AVX, 06033A221J AT2A

20 1 C106 CAP., COG, 150pF, 250V, 5%, 0603 TDK, C1608C0G2E151J080AA

21 1 C112 CAP., X7R, 0.22µF, 250V, 10%, 1206/1210 TDK C3225X7R2E224K

22 1 C113 CAP., X7R, 0.033µF, 25V, 10%, 0603 AVX, 06033C333K AT2A

23 1 C118 CAP., NPO, 1500pF, 5%, 0603 AVX, 06033A152J AT2A

24 2 D1, D34 DIODE ULTRA FAST 1A, 200V, SMP VISHAY, ES1PD-M3 / 84A

25 3 D27, D29, D30 DIODE SCHOTTKY 60V, 0.5A, SOT23 DIODES INC, ZHCS506TA

26 1 D40 DIODE, 1N4148WS, SOD323 VISHAY, 1N4148WS-E3-08

27 1 L1 INDUCTOR, 1.0µH, 20% COILCRAFT, XPL2010-102ML

28 1 L2 INDUCTOR, 2.0µH, 20% VISHAY, IHLP4040DZER2R0M11

29 1 L3 INDUCTOR, 3.3µH, 10% COILCRAFT, SER2915L-332KL

30 2 Q8, Q9 MOSFET N-CH 150V, POWERPAK-SO-8 INFINEON, BSC190N15NS3 G

31 4 Q12, Q13, Q14, Q15 MOSFET N-CH 80V, POWERPAK-SO-8 INFINEON, BSC028N06NS3

32 1 Q27 TRANS., NPN 40V, 1A, SOT-89 DIODE INC., FCX491ATA

33 1 Q28 MOSFET, N-CH, SUPER, SOT-6 FAIRCHILD, FDC2512-NL

34 1 Q29 MOSFET, P-CH, IRF6217, POWERPAK-

1 R1 RES., CHIP, 0.33, 1/4W, 5%, 2512 PANASONIC, ERJ-1TRQJR33U

35

36 1 R4 RES., CHIP, 8.2k, 1W, 5%, 2512 PANASONIC, ERJ-1TYJ822U

37 1 R18 RES., CHIP, 102k, 1/8W, 1%, 0805 VISHAY, CRCW0805102KFKEA

38 1 R22 RES., CHIP, 3.74k, 1/16W, 1%, 0603 VISHAY, CRCW06033K74FKEA

39 2 R23, R24 RES., CHIP, 8.2, 1/4W, 5%, 1206 VISHAY, CRCW12068R20JKEA

40 1 R29 RES., CHIP, 100k, 1/8W, 5%, 0805 VISHAY, CRCW0805100KJNEA

41 1 R41 RES., CHIP, 11.5k, 1/16W, 1%, 0603 VISHAY, CRCW060311K5FKEA

CAP., X7R, 4.7µF, 25V, 10%, 1206 AVX, 12063C475

SO-8 IR, IRF6217TRPBF

KAT2A

dc2199aafa

6

DEMO MANUAL DC2199A-A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

42 1 R42 RES., CHIP, 1k, 1/16W, 1%, 0603 VISHAY, CRCW06031K00FKEA

43 1 R46 RES., CHIP, 604, 1/16W, 1%, 0603 VISHAY, CRCW0603604RFKEA

44 2 R51, R52 RES., CHIP, 3.0, 1/4W, 5%, 1206 PANASONIC, ERJ-8GEYJ3R0V

45 1 R53 RES., CHIP, 6.8, 1/2W, 1%, 1206 PANASONIC, ERJ-8RQF6R8V

46 1 R68 RES., CHIP, 2.15k, 1/16W, 1%, 0603 VISHAY, CRCW06032K15FKEA

47 1 R69 RES., CHIP, 46.4k, 1/16W, 1%, 0603 VISHAY, CRCW060346K4FKEA

48 1 R75 RES., CHIP, 215, 1/8W, 1%, 0805 VISHAY, CRCW0805215RFKEA

49 1 R76 RES., CHIP, 4.22, 1/8W, 1%, 0805 VISHAY, CRCW08054R22FKEA

50 1 R84 RES., CHIP, 1.21k, 1/8W, 1%, 0805 VISHAY, CRCW08051K21FKEA

51 4 R101, R148, R149, R151 RES., CHIP, 100, 1/16W, 1%, 0603 VISHAY, CRCW0603100RFKEA

52 1 R109 RES., CHIP, 10k, 1/16W, 1%, 0603 VISHAY, CRCW060310K0FKEA

53 1 R110 RES., CHIP, 1.20, 1/2W, 1%, 1206 SUSUMU, RL1632S-1R20-F

54 1 R114 RES., CHIP, 28.7k, 1/16W, 1%, 0603 VISHAY, CRCW060328K7FKEA

55 1 R117 RES., CHIP, 12.7k, 1/16W, 1%, 0603 VISHAY, CRCW060312K7FKEA

56 1 R118 RES., CHIP, 681k, 1/16W, 1%, 0603 VISHAY, CRCW0603681KFKEA

57 1 R121 RES., CHIP, 133k, 1/16W, 1%, 0603 VISHAY, CRCW0603133KFKEA

58 1 R123 RES., CHIP, 118k, 1/16W, 1%, 0603 VISHAY, CRCW0603118KFKEA

59 1 R125 RES., CHIP, 17.4k, 1/16W, 1%, 0603 VISHAY, CRCW060317K4FKEA

60 1 R136 RES., CHIP, 0.005, 1W, 1%, 1225 SUSUMU, KRL6432D-M-R005-F-T5

61 1 R139 RES., CHIP, 26.7k, 1/16W, 1%, 0603 VISHAY, CRCW060326K7FKEA

62 1 R140 RES., CHIP, 274, 1/8W, 1%, 0805 PANASONIC, ERJ-6ENF2740

63 1 R150 RES., CHIP, 14.3k, 1/16W, 1%, 0603 VISHA

64 1 T1 TRANSFORMER CHAMPS TECH., LTC -PQ26-0402

65 1 T2 TRANSFORMER, 1.25:1 Pulse, PA3493NL

66 1 T3 TRANSFORMER, 1:100, CT02-100 ICE COMPONENTS, CT02-100 = 1:100

67 1 U1 I.C. LTC3765EMSE, MSOP-16PIN LINEAR TECH., LTC3765EMSE#PBF

68 1 U2 I.C. LTC3766EGN, SSOP-GN28 LINEAR TECH., LTC3766EGN#PBF

Additional Demo Board Circuit Components

1 0 C12, C13, C14, C16, C20 CAP., O PT, 0603 OPT

2 0 C8, C9, C18, C19, C103, C111 CAP., OPT, 0603 OPT

3 0 C15, C21, C114 CAP., OPT, 0805 OPT

4 0 C17, C116 CAP., OPT, 1206 OPT

5 0 C23, C25, C26 CAP., OPT, CAP-SVPF-E12 OPT

6 2 C74, C105 CAP, 0Ω, JUMPER 0603 VISHAY, CRCW06030000Z0EA

7 0 D2 DIODE TBD SOD323 OPT

8 0 D4, D35 DIODE OPT, SOD323 OPT

9 0 D28, D37, D38 DIODE OPT, SOT23 OPT

10 0 L4 INDUCTOR, OPT, DO1606T OPT

11 0 Q1, Q2 MOSFET, OPT, SOT23-6 OPT

12 0 Q4 MOSFET, OPT, D-PAK OPT

13 0 Q11, Q23, Q24 MOSFET, OPT, POWERPAK-SO-8 OPT

14 0 R5 RES., OPT, 2512/2010 OPT

Y, CRCW060314K3FKEA

V

dc2199aafa

7

DEMO MANUAL DC2199A-A

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

15 13 R6, R7, R8, R9, R49, R103, R111, R112,

R113, R122, R124, R137, R146

16 0 R10, R13, R14, R15 RES., OPT, 2512 OPT

17 0 R17, R108, R116, R127 RES., OPT, 1206 OPT

18 0 R25, R26, R27, R28, R30, R31, R32, R33,

R34, R35, R43, R106, R107, R119, R120, R126, R138, R147

19 1 R77 RES., CHIP, 0, 1/8W, 0805 VISHAY, CRCW08050000Z0EA

20 1 R102 RES., CHIP, 0Ω, 1225 TEPRO,RN5326

21 1 R115 RES., CHIP, 0, 1/4W, 1206 VISHAY, CRCW12060000Z0EA

22 0 R152 RES., OPT, 0805 OPT

23 0 U3 I.C. OPT, SO16 OPT

Hardware: For Demo Board Only

1 4 E1, E2, E3, E4 TESTPOINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0

2 3 E5, E6, E7 TESTPOINT, TURRET, .061" MILL-MAX, 2308-2-00-80-00-00-07-0

3 0 J1

4 2 J3, J4 STUD, TEST PIN PEM, KFH-032-10

5 4 J3, J4(2 EACH) NUT, BRASS, #10-32 ANY #10-32

6 2 J3, J4 WASHER, STAR #10 BRASS NICKEL ANY, #10EXT BZ TN

7 2 J3, J4 Ring, Lug Ring # 10 KEYSTONE, 8205

8 0 TP1-TP6 PAD-SMD PAD-SMD

9 4 (STAND-OFF) STAND-OFF, NYLON 0.25" KEYSTONE, 8831 (SNAP ON)

10 1 FAB, PRINTED CIRCUIT BOARD DEMO CIRCUIT 2199A

RES., CHIP, 0Ω, 0603 VISHAY, CRCW06030000Z0EA

RES., OPT, 0603 OPT

HEADER, OPT, 2×7PIN, 0.079CC

OPT, MOLEX, 87331-1420

8

dc2199aafa

SCHEMATIC DIAGRAM

5

4

3

2

1

D

C

B

A

12

DEMO MANUAL DC2199A-A

D

DAVID B.PRODUCTION

L1

0.33

T1

LTCP26-0402T1LTCP26-0402

T3

CT02-100T3CT02-100

VIN

2512R10.33

2512

1.0uHL11.0uH

+VOUT

R4

2512

8.2K

L3

3.3uHL33.3uH

D1

ES1PDD1ES1PD

C51

630V

C51

630V

470pF

10 92

14

8

3

34

R84

1 2

C3,4,5,6

4x4.7uF

C3,4,5,6

4x4.7uF

100V

L2

2.0uHL22.0uH

C2

4.7uF

100V

C1,22

2x33uF

80V

+

+VIN+VIN

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

2 8-18-14

__

R1

12VOUT / 30A

C7,31,33,68

4x150uF

16V

4x150uF

16V

7343

+

22uF

C34

16V

C34

16V

1210

BSC028N06NS3

Q12 BSC028N06NS3Q12 BSC028N06NS3

Q13

Q23 OPTQ23 OPT

C10

2.2nF

C10

2.2nF

1 2

R23,24

2x8.2

R23,24

2x8.2

1206

FG

13 126

5

ND

0805

1.21K

13

D27

ZHCS506

1210

-VIN

-VIN-VIN

-VOUT

630V

1206

630V

1206

SGND PGND

BSC028N06NS3

Q15 BSC028N06NS3Q15 BSC028N06NS3

Q24 OPTQ24 OPT

Q14

R51,52

2x3.0

1206

R51,52

2x3.0

1206

C69

630V

1206

1.5nF

C106

150pF

250V

C106

150pF

250V

R53

6.8

1206

R53

6.8

1206

BSC190N15NS3

SGND

Q8 BSC190N15NS3Q8 BSC190N15NS3

Q9

0805

R76

4.22

R76

4.22

IS+

VIN

36V-60VIN

Q27

FCX491A

RS-

R136

0.005

R136

0.005

Q11 OPTQ11 OPT

D29

13

1

215

R75

PGNDP

1225/2512

R29

ZHCS506

C

C76

3.3nF

C76

3.3nF

1K

R421KR42

11.5K

R41

18

17

28

21

22

24

1

2

23

3

20

28.7K

SGND

1812

250V

7

8

2

14

0805

102K

12

VS+

IS+

IS-

VCC

NDRV

VIN

VAUX

SG

FG

SW

VSEC

PT+26PT-

C71

T2

1 6

TRANS-PA3493NL

C72

C101

15

IN+

IS-

IS+

PG

NDRV

VCC

3

VCP

R41

13

LTC3766EGN28

U2

16V

1uF

0805

0.1uF

220pF

12

+VOUT

SGND

C70

3.3nF

IS+

C77

1206

4.7uF

PGND

3 2

FG

0805

R114

-VOUT

C30

2.2nF

-VIN

SGNDP

100

R149

1.5nF

C118

100

R148

0805

100K

Q28

FDC2512

R18

6

FB

VS-

VSOUT

ITH

SGD

FS/SYNC

MODE

IPK

PHASE

PGND

GND

REGSD

SS

RUN8FGD/SWB

25

+VOUT

0805

4

3

1.25T 1T

100

R101

16

IN-

U1

LTC3765EMSE

RUN

SSFLT

13

PSS

C24

R46

604

R46

604

R68

11

C75

7

19

R69

46.4K

15

4

10

R123

118K

5

27

14

16

C78

9

R121

R118

681K

R118

681K

200V

C112

0.22uF

C112

0.22uF

ND

4

AG

ISMAG

5

DELAY

6

FS/UV

PGND

1

GND

GND2

9

RCORE

11

0805

1uF

16V

1uF

16V

SGNDP

2.15K

33nF

C73

1210

C66

B

SGND

C79

4.7nF

100pF

R125

17.4K

R125

17.4K

0805

COG

133K

1nF

R140

274

1/8W

R140

274

1/8W

0805

C11

15nF

D34

47nF

200V

1206

ES1PD

1/2W

R110

1.20

1206

R110

1.20

1206

Q29

IRF6217

R109

10K

R109

10K

0805

C102

0.1uF

C102

0.1uF

13

D30

C80

1nF

C80

1nF

R117

12.7K

R117

12.7K

UV

R139

26.7K

R139

26.7K

10

17

14.3K

R150

C113

33nF

C113

33nF

1nF

C55

SGNDP

R22

3.74K

ZHCS506

100

R151

SGNDP

1nF

C119

A

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Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

APPROVALS

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

NOTE:

4.7uF 100V MURATA, GRM32ER72A475KE14 (X7R 1210)

4.7uF 25V AVX, 12063C475KAT2A (X7R 1206)

22uF 16V MURATA, GRM32ER71C226MEA8L (1210 X5R)

2.2nF 250V Murata GA343QR7GD222KW01L (X7R 1812)

150uF 16V PANASONIC, 16TQC150MYF

33uF 80V PANASONIC, EEHZA1K330P (10x12.5mm)

2

SHEET OF

LTC Confidential-For Customer Use Only

ACTIVE CLAMP FORWARD CONVERTER

TECHNOLOGY

SCHEMATIC

TITLE:

LT

DAVID B.

PCB DES.

APP ENG.

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

Unless otherwise specified:

All resistors are in ohms 0603.

L2 Vishay IHLP4040DZER2R0M11

L3 Coilcraft SER2915L-332KL

0.005 ohm Susumu KRL6432D-M-R005-F-T5 (1225)

1

DC2199A

WITH DIRECT FLUX LIMIT

LTC3765EMSE / LTC3766EGN28

Friday, October 31, 2014

IC NO. REV.

N/A

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

SCALE = NONE

2

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

3

4

1/4W = 1206, 1W = 2512.

All capacitors are in microfarads 0603.

All capacitors are 25V.

1/16W = 0402, 1/10W = 0603, 1/8W = 0805,

5

R110 SUSUMU, RL1632S-1R20-F (1206)

T1 Champs, LTC-PQ26-0402

T2 Pulse, PA3493NL

Simplified Schematic (without Unneeded Components)

dc2199aafa

9

DEMO MANUAL DC2199A-A

5

4

3

2

1

D

C

B

A

12

SCHEMATIC DIAGRAM

D

DAVID B.PRODUCTION

+VOUT

+

E3+E3

8

2.0uHL22.0uH

E1

1206

8.2

R3

14

+VOUT

L3

-VOUT

R24

8.2 1206

C51

630V

C51

630V

470pF

1206

470pF

1206

SW

PGND

OPTR3OPT

10 92

3

34

C5

4.7uF

C4

4.7uFC4100V

4.7uF

C3

4.7uF

C6

4.7uF

C2

4.7uF

C22

33uF

+

C1

33uF

+

36V-60VIN

3.3uHL33.3uH

Q3

312

R84

100V

1210

100V

1210

100V

1210

100V

80V

J3J3

R5

OPT

R4

8.2K

CLAMP

13 126

5

OPTQ3OPT

0805

1.21K

13

1210

-VINE2-VIN

D1

R90R9

D27

E2

2512R5OPT

2512

ES1PDD1ES1PD

FG

0

D28

C23

ZHCS506

-VIN

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

2 10-29-14

__

R23

VA

R2

OPTR2OPT

T1

LTCP26-0402T1LTCP26-0402

OPT

2512

OPT

2512

T3

R10

1 2

CT02-100T3CT02-100

VIN

R1

0.33

2512R10.33

2512

L2

L1

1.0uHL11.0uH

+VINE1+VIN

12VOUT / 30A

7343

150uF

16V

150uF

16V

C68

+

OPT

C26+C26

C25+C25

+

C7

150uF

16V

150uF

16V

7343

+

16V

C31

150uF

C31

150uF

7343

+

C33

150uF

16V+C33

150uF

16V

7343

+

22uF

C34

16V

C34

16V

1210

OPT

OPT BSC028N06NS3

BSC028N06NS3

Q23

Q12 BSC028N06NS3Q12 BSC028N06NS3

Q13

4

5

5 678

678

C10

2.2nF

630V

C10

2.2nF

630V

1 2

FG

4

5

5 678

678

SWB

C69

1206

630V

1.5nF

C106

R53

6.8

1206

R53

6.8

1206

6 7 8

6 7 8 5

5

ND

SGND

13

0805

OPT

R76

4.22

R76

4.22

IS+

-VOUT

1

1 23

23

1206

RS+RS-

R102

1

1 23

23

R52

3.0

R52

3.0

R51

3.0

R51

3.0

150pF

200V

150pF

200V

4

R490R49

VIN

J4J4

0

Q15 BSC028N06NS3Q15 BSC028N06NS3

1206

2 3

2 3 1

1

BSC190N15NS3

Q8 BSC190N15NS3Q8 BSC190N15NS3

Q9

0

-

E4-E4

-VOUT

VCC

RS+RS-

R7

0

R7

0

VPK

R147

RUN

0

R6

0603

R6

0603

0

R1030R103

215

0805

R75

1225

OPT

BSC028N06NS3

Q24

Q14

RS-

R136

0.005

R136

0.005

Q11 OPTQ11 OPT

ZHCS506

D29

13

VS+

0603

R1370R137

OPT

C111

C8

OPTC8OPT

R770R77

SGND PGND

PGNDP

1225/2512

R29

+SENSE

E5E5

OPT

R126

OPT

R107

R106

Q27

0

100

R148

100K

OPT

0

0805

R108

C

VS-

FCX491A

OPT

PGND

C30

SGNDP

R149

0805

Q28

2 5 6

-SENSE

IS+

C103

1

1206

OPT

2.2nF

100

C118

FDC2512

B

C76

3.3nF

C76

3.3nF

1K

R421KR42

11.5K

R41

SGND

3.3nF

OPT

R1130R113

OPT

VAUX

0

R1120R112

0

R1110R111

0

R1460R146

R114

1812

250V

7

8

2

14

4 1

0805

R11501/4W

12

IS+

18

IS-

17

0

28

1206

21

VIN

22

24

SG

1

FG

2

SW

23

3

20

28.7K

SGND

C71

1uF

C71

1uF

T2

1 6

TRANS-PA3493NL

C72

0.1uF

C101

15

IN+

IS-

IS+

PG

NDRV

VCC

3

VCP

D40

1 2

E7E7

RUN

R41

C740C74

0

1206

13

VS+

VCC

NDRV

VAUX

LTC3766EGN

U2

VSEC

PT+26PT-

16V

0805

4

3

1.25T 1T

0805

R101

220pF

U1

RUN

12

PSS

1N4148WS

6

FB

VS-

VSOUT

ITH

SGD

FS/SYNC

MODE

IPK

PHASE

PGND

GND

REGSD

SS

RUN8FGD/SWB

25

PT-

C112

ND

AG

100

AG

4

16

IN-

AG

LTC3765EMSE

SSFLT

RCORE

13

11

0805

C24

1uF

16V

C24

1uF

16V

E6E6

+VOUT

C70

VCC

3 2

R116

R138

OPT

R138

OPT

FG

-VOUT

-VIN

1.5nF

3

R18

102K

R18

102K

R119

11

7

19

15

4

10

5

27

14

16

9

0.22uF

SGNDP

R80R8

ISMAG

DELAY

FS/UV

PGND

GND

GND2

C9

OPTC9OPT

SGND

R46

604

R46

604

1206

R127

OPT

1/4W

R127

OPT

1/4W

1206

C77

4.7uF

PGND

VCC

OPT

R120

OPT

C79

4.7nF

R68

2.15K

R68

2.15K

C75

ITH-

100pF

R125

17.4K

R125

17.4K

SYNC ITH

R69

46.4K

R43

OPT

R43

OPT

VCC

R1240R124

0

R123

118K

R1220R122

0

C1050C105

C78

33nF

0805

SSS

RUN

+VOUT

1210

200V

C66

47nF

C66

47nF

0

5

6

10

1

17

9

COG

R121

133K

R121

133K

1nF

C73

R118

681K

R118

681K

0805

R140

274

1/8W

R140

274

1/8W

C11

15nF

D34

ES1PD

200V

1206

3

8

2

7 6 5

Q29

IRF6217

AG1

C102

0.1uF

C102

0.1uF

AG1

C80

1nF

C80

1nF

AS

R117

12.7K

R117

12.7K

UV

R139

26.7K

R139

26.7K

14.3K

R150

C113

33nF

C113

33nF

1nF

C55

R22

3.74K

0805

1

4

1

32

13

SGNDP

1/2W

R110

1.20

1206

R110

1.20

1206

Q31

OPT

100

R151

R109

10K

R109

10K

AS

D30

ZHCS506

C119

SGNDP

1nF

A

www.linear.com

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

APPROVALS

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

2

SHEET OF

LTC Confidential-For Customer Use Only

TECHNOLOGY

SCHEMATIC

TITLE:

LT

DAVID B.

PCB DES.

APP ENG.

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

1

DC2199A

WITH DIRECT FLUX LIMIT

ACTIVE CLAMP FORWARD CONVERTER

LTC3765EMSE / LTC3766EGN

Wednesday, October 29, 2014

IC NO. REV.

N/A

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

SCALE = NONE

2

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

3

Full Schematic, Page 1

4

1/4W = 1206, 1W = 2512.

Unless otherwise specified:

All resistors are in ohms 0603.

All capacitors are in microfarads 0603.

All capacitors are 25V.

1/16W = 0402, 1/10W = 0603, 1/8W = 0805,

5

NOTE:

4.7uF 100V MURATA, GRM32ER72A475KE14 (X7R 1210)

4.7uF 25V AVX, 12063C475KAT2A (X7R 1206)

22uF 16V MURATA, GRM32ER71C226MEA8L (1210 X5R)

2.2nF 250V Murata GA343QR7GD222KW01L (X7R 1812)

150uF 16V PANASONIC, 16TQC150MYF

33uF 80V PANASONIC, EEHZA1K330P (10x12.5mm)

L2 Vishay IHLP4040DZER2R0M11

L3 Coilcraft SER2915L-332KL

0.005 ohm Susumu KRL6432D-M-R005-F-T5 (1225)

R110 SUSUMU, RL1632S-1R20-F (1206)

T1 Champs, LTC-PQ26-0402

T2 Pulse, PA3493NL

10

dc2199aafa

SCHEMATIC DIAGRAM

5

4

3

2

1

D

C

B

A

22

DEMO MANUAL DC2199A-A

D

4

R34

OPT

R34

OPT

PSSPSS

PSS

CLAMP

R15

6.8

2512

R15

6.8

2512

R17

1206

R17

1206

100K

R14

6.8

2512

R14

6.8

2512

15nF

200V

1206

15nF

200V

1206

R13

6.8

2512

R13

6.8

2512

RS-

C20

0.1uF

C20

0.1uF

VCC

ACTIVE SNUBBER

16

5

U3

SO16

3

HEF4528BT

4

1.00K

C12

47pF

C12

47pF

5

776

5

6

R26 OPTR26 OPT

SGND

Q4

C15

0.1uF

0805

0.1uF

0805

4

Q1

2

5

C14

0.1uF

7

VDD

Q1

B1

RES

A1

CRX

2

C13

R12

4.99K

R12

4.99K

1122334

J1

R25

OPT

R25

OPT

SGNDPSGNDP

SGNDP

C17

SWFG

OPTIONAL CIRCUITS

R11

8

R35 OPTR35 OPT

SSSSSS

FQD4P25Q4FQD4P25

R19

1.5K

R19

1.5K

D2

316

C16

VSS2

VSS1

VSS

10pF

8

SSS

1 2

OPTD2OPT

ZXGD3002E6Q1ZXGD3002E6

56pF

15

8

1

C

141413131212111110109

9

R28 OPTR28 OPT

R27 OPTR27 OPT

R32 OPTR32 OPT

ITHITH

PT-PT-

VS+VS+

ITH

VS+

R30 OPTR30 OPT

R31 OPTR31 OPT

VS-VS-

ITH-ITH-

VS-

ITH-

RS-

OPTJ1OPT

HD2X7-MOLEX

R33 OPTR33 OPT

SYNCSYNC

PT-

SYNC

B

VPK

C114

R152

OPT

12

D35

OPT

PEAK CHARGE VCC

VA

OPT

C116

VAUX

L4

OPTL4OPT

D38

D37

OPT

D37

OPT

VCC FROM T1

1 3

VA

C21

OPT

0805

C21

OPT

0805

SW

12

D4

+VOUT

PGNDP

C19

OPT

VCCP

Q2

OPTQ2OPT

2

AC DRIVER

AG AG1

A

www.linear.com

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

Fax: (408)434-0507

Milpitas, CA 95035

Phone: (408)432-1900

1630 McCarthy Blvd.

PGNDPGND

OPT

0805

OPT

0805

APPROVALS

0805

1206

OPT

1 3

OPTD4OPT

APPROVALS

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A

CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;

2

SHEET OF

LTC Confidential-For Customer Use Only

ACTIVE CLAMP FORWARD CONVERTER

TECHNOLOGY

SCHEMATIC

TITLE:

LT

DAVID B.

PCB DES.

APP ENG.

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO

VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL

APPLICATION. COMPONENT SUBSTITUTION AND PRINTED

1

DC2199A

WITH DIRECT FLUX LIMIT

LTC3765EMSE / LTC3766EGN

Wednesday, October 29, 2014

IC NO. REV.

N/A

SIZE

DATE:

SIZE

DATE:

SIZE

DATE:

SCALE = NONE

2

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT

PERFORMANCE OR RELIABILITY. CONTACT LINEAR

TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.

THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

3

Full Schematic, page 2

4

316

4

PGNDP

5

C18

OPT

C18

OPT

PGNDP

AG AG1

Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.

5

dc2199aafa

11

DEMO MANUAL DC2199A-A

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LT C ) provides the enclosed product(s) under the following AS IS conditions:

This demonstration board (DEMO BOARD) kit being sold or provided by Linear Technology is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not provided by LTC for commercial use. As such, the DEMO BOARD herein may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including but not limited to product safety measures typically found in finished commercial goods. As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic compatibility and therefore may or may not meet the technical requirements of the directive, or other regulations.

If this evaluation kit does not meet the specifications recited in the DEMO BOARD manual the kit may be returned within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE WARRANTY MADE BY THE SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED, OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THIS INDEMNITY, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.

The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user releases LT C from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the user’s responsibility to take any and all appropriate precautions with regard to electrostatic discharge. Also be aware that the products herein may not be regulatory compliant or agency certified (FCC, UL, CE, etc.).

No License is granted under any patent right or other intellectual property whatsoever. LT C assumes no liability for applications assistance,

customer product design, software performance, or infringement of patents or any other intellectual property rights of any kind.

LT C currently services a variety of customers for products around the world, and therefore this transaction is not exclusive.

Please read the DEMO BOARD manual prior to handling the product. Persons handling this product must have electronics training and

observe good laboratory practice standards. Common sense is encouraged.

This notice contains important safety information about temperatures and voltages. For further safety concerns, please contact a LT C application engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

Linear Technology Corporation

12

1630 McCarthy Blvd., Milpitas, CA 95035-7417

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com

dc2199aafa

LT 1114 REV A • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 2014