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dc1717afa

DEMO MANUAL DC1717A

schematic Diagram

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

2.  INSTALL SHUNTS ON JUMPERS AS SHOWN.

1.  ALL RESISTORS ARE IN OHMS, 0603.      ALL CAPACITORS ARE IN MICROFARADS, 0603.

NOTES: UNLESS OTHERWISE SPECIFIED

LED DRIVER

V1

V2

V3

VOUT

V3

V2

V1

5V

5V

5V

5V

5V

VS1

VS2

VS3

FG1

FG2

FG3

/VALID1

/VALID2

/VALID3

EN

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLAD O.

PRODUCTION

__

3

07-23-15

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLAD O.

PRODUCTION

__

3

07-23-15

REVISION HISTORY

DESCRIPTION

DATE

APPROVED

ECO

REV

VLAD O.

PRODUCTION

__

3

07-23-15

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION.  COMPONENT SUBSTITUTION AND PRINTED 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

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

3

DEMO CIRCUIT 1717A

Thursday, July 23, 2015

1

2

PRIORITIZED POWERPATH CONTROLLER

N/A

LTC4417CUF

KIM T.

VLAD O.

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION.  COMPONENT SUBSTITUTION AND PRINTED 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

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

3

DEMO CIRCUIT 1717A

Thursday, July 23, 2015

1

2

PRIORITIZED POWERPATH CONTROLLER

N/A

LTC4417CUF

KIM T.

VLAD O.

SIZE

DATE:

IC NO.

REV.

SHEET

OF

TITLE:

APPROVALS

PCB DES.

APP ENG.

TECHNOLOGY

Fax: (408)434-0507

Milpitas, CA 95035 Phone: (408)432-1900

1630 McCarthy Blvd.

LTC Confidential-For Customer Use Only

CUSTOMER NOTICE

LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION.  COMPONENT SUBSTITUTION AND PRINTED 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

SCHEMATIC

SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.

SCALE = NONE

www.linear.com

3

DEMO CIRCUIT 1717A

Thursday, July 23, 2015

1

2

PRIORITIZED POWERPATH CONTROLLER

N/A

LTC4417CUF

KIM T.

VLAD O.

Q1

Si7905DN

7

1

2

3

6

4

8

5

+

C2 OPT 2220

JP3

ON

OFF

SHDN

1

3

2

D1 SMBJ26CA

E10

EN

G1

E11

SHDN

R4 1.69M 0805

Q11

MMBT3904

1

2

3

E12

CAS

D13 BAT42WS-V

1

2

R33 100k

C22 0.047uF 50V 0805

D14 BAT42WS-V

1

2

E6

R5 69.8K 0805

E2

FG1

JP2

ON

OFF

EN

1

3

2

D15 BAT42WS-V

1

2

R26 249

R11 127k

R36 100k

R7 590K 0805

VS2

JP1

30mV

RHYS

HYS

1

3

2

R10 1.05M 0805

E4

C11 1uF 50V

E3

D2 SMBJ26CA

VS1

C4 OPT 2220

C9 OPT 2220

R12 69.8K 0805

C6 OPT 2220

E7

VALID1

UV2

C17 0.1uF 50V 0805

J4

GND

C10 1uF 50V

R23 249

FG3

UV1

R34 68k 1206

J2

V2 (+5V)

J1

V1 (+12V)

C18 0.1uF 50V 0805

R30 100k

E16

D18 GRN

VOUT

2

1

R28 249

VS3

C19 0.1uF 50V 0805

R8 69.8K 0805

D3 SMBJ26CA

UV3

U1

LTC4417

V1

21

UV1

1

OV1

2

UV2

3

V2

20

EP

25

OV2

4

V3

19

OV3

6

UV3

5

VS1

18

G1

17

VS2

16

G2

15

VS3

14

G3

13

VOUT

12

VALID1

7

VALID2

8

VALID3

9

EN

22

SHDN

23

HYS

24

CAS

11

GND

10

Q2

Si7905DN

7

1

2

3

6

4

8

5

J5

V3 (+8V)

J6

GND

+

C7 47uF 50V SANYO 50CE47BS

FG2

OV2

R35 240 1206

C20 0.047uF 50V 0805

R6 130K 0805

Q10 MMBTA42

1

2

3

C3 OPT 1206

C8 OPT 1206

C1 OPT 1206

C12 1uF 50V

E8

VALID2

E1

G3

R13 130K 0805

G2

OV1

R32 100k

J3

VOUT 2A MAX

E9

VALID3

C5 OPT 1206

Q3

Si7905DN

7

1

2

3

6

4

8

5

R9 130K 0805

C21 0.047uF 50V 0805

R31 100k

OV3

Содержание DC1717A

Страница 1: ...G SOURCE Sourcing VS VG Clamp Voltage VOUT 11V I 10µA 5 8 6 6 7 V ΔVG SINK Sinking VS VG Clamp Voltage VOUT 11V I 10µA 4 5 5 2 6 V ΔVG OFF G1 to G3 Off VS VG Threshold V1 V2 V3 2 8V VOUT 2 6V G1 to G3 Rising Edge 0 12 0 35 0 6 V ΔVG SLEW ON G1 to G3 Pull Down Slew Rate VOUT 11V CGATE 10nF 4 9 20 V µs ΔVG SLEW OFF G1 to G3 Pull Up Slew Rate VOUT 11V CGATE 10nF 7 5 13 22 V µs IGATE LOW G1 to G3 Low ...

Страница 2: ...sis is 6 and can be changed to 3 by moving the JP1 jumper to the 30mV position The controller s break before make switching method prevents cross conduction between input channels and reversecurrentfromtheoutputcapacitorintotheselected input supply Each channel s control circuit of the LTC4417 has a REV comparator which monitors the connecting input supply and output load voltage The REV comparato...

Страница 3: ... VALID pins at 0 7V but otherwise leaves the LTC4417 operating autonomously The following design considerations and equations dem onstrate the interrelation of the main component values and transient parameters in the rail transitions when the output voltage exceeds 0 7V The variables CS and RS used in the design equations correspond to the following board components C20 R23 for V1 12V channel C21...

Страница 4: ...e Use CL INIT and RS No Is recalculated CL lower than initial CL INIT As shown in the equation 3 the use of external slew rate control will add additional delay to the total switchover time Unfortunately the actual components cannot be chosen until the load capacitance is known This circular issue can only be resolved through an iterative process TheprocessstartsbycalculatingtheCLOAD MIN assuming ...

Страница 5: ...nal to the LTC4417 Optional R33 may be added as a pull up to the auxiliary 5V power supply SHDN pulled up by 2μA internal to the LTC4417 Optional R36 may be added as a pull up to the auxiliary 5V power supply CAS used to cascade a second DC1717A Connect the CAS turret of the high priority DC1717A to the EN turret of the lower priority DC1717A Grounds must be connected in common JP1 HYS Add 30mV fi...

Страница 6: ... 30W to the DC1717A output turret or banana jack VOUT Do not use an electronic load in constant current mode Turn on three power supplies No additional LEDs should light Change the jumper JP3 SHDN header position from OFF to ON Three LEDs VALID1 VALID2 and VALID3 validating the input rail voltages should light Placing the jumper JP2 EN in the ON position turns on the LTC4417 powering the load with...

Страница 7: ...Q3 DUAL P CHAN 40V POWERPAK1212 8 DUAL VISHAY Si7905DN T1 GE3 19 0 Q4 Q5 Q6 Q7 Q8 Q9 MOSFET P CHAN 40V FDD4685 DPAK OPT 20 1 Q10 XTOR N CHAN SOT23 DIODE INC MMBTA42 7 F 21 1 Q11 XTOR N CHAN SOT23 DIODE INC MMBT3904 7 F 22 1 R4 RES CHIP 1 69M 0 125W 1 0805 VISHAY CRCW08051M69FKEA 23 3 R5 R8 R12 RES CHIP 69 8k 0 125W 1 0805 VISHAY CRCW080569K8FKEA 24 3 R6 R9 R13 RES CHIP 130k 0 125W 1 0805 NIC NRC10...

Страница 8: ...ROPRIETARY TO LINEAR TECHNOLOGY AND SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS SCALE NONE www linear com 3 DEMO CIRCUIT 1717A Thursday July 23 2015 1 2 PRIORITIZED POWERPATH CONTROLLER N A LTC4417CUF KIM T VLAD O SIZE DATE IC NO REV SHEET OF TITLE APPROVALS PCB DES APP ENG TECHNOLOGY Fax 408 434 0507 Milpitas CA 95035 Phone 408 432 1900 1630 McCarthy Blvd LTC Confidential For Customer...

Страница 9: ...APPLICATION COMPONENT SUBSTITUTION AND PRINTED 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 SCHEMATIC SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS SCALE NONE www linear com 3 DEMO CIRCUIT 1717A Thursday July 23 2015 2 2 PRIORITIZED POWERPATH CO...

Страница 10: ...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 LTC from all claims arising from the handling or use of the...

Страница 11: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Analog Devices Inc DC1717A ...

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