Linear Technology LTC4412 Guía de configuración rápida

dc1635afc

DEMO MANUAL DC1635A

DESCRIPTION

LTC4412/LTC4414:

Dual Low Loss High Voltage

PowerPath Controllers

Demonstration circuit 1635A features the LT C

4412HVIS6

andLTC4414EMS8, low lossPowerPath™controllers.Each

controller is capable of automatically switching between

primary and auxiliary power sources for a single output.

There are two electrically isolated circuits, one for each IC,

for independent evaluation. The LTC4412 circuit is intended

for lower current loads, whiletheLTC4414 circuit iscapable

of driving larger PMOS devices for higher current loads.

The input supply voltage ranges are from 2.5V to 36V for

LTC4412 and 5V to 36V for LTC4414. As initially conﬁgured

with the default MOSFET, the LTC4412 circuit maximum

input voltage is 18V. The LTC4412 and LTC4414 circuit

current limits are 2A and 8A respectively.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

PowerPath is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners.

PERFORMANCE SUMMARY

The primary power paths can be controlled with external

logic applied to the CTL pins. PowerPath status can be

monitored using theSTAT pins. Evaluation of higher current

or more complex sourcing systems can be accomplished

by installing additional ICs, as well as paralleling the inputs

and/or outputs using the optional supplied pads. Multiple

standard MOSFET package options are also available on

each circuit for evaluation convenience.

Design ﬁles for this circuit board are available at

http://www.linear.com/demo/DC1635A

PARAMETER CONDITIONS VALUE UNIT

Minimum LTC4412 Input Voltage VIN1 2.5 V

Maximum LTC4412 Input Voltage VIN1 and VAUX1 18 V

LTC4412 Maximum Current MOSFET Limited 2 A

Minimum LTC4414 Input Voltage VIN2 and VAUX2 5 V

Maximum LTC4414 Input Voltage VIN2 and VAUX2 36 V

LTC4414 Maximum Current MOSFET Limited 8 A

Speciﬁcations are at TA= 25°C

dc1635afc

DEMO MANUAL DC1635A

QUICK START PROCEDURE

Demonstration circuit 1635A is easy to set up to evaluate

the performance of LTC4412 and LTC4414. Refer to Figure

1 for proper measurement equipmentsetupof bothcircuits

and follow the procedures below.

LTC4412 Circuit

1. With all power off, connect auxiliary (VAUX1) and primary

(VIN1) power supplies capable of 2A each, the system

load and meters as shown in Figure 1.

2. Preset the system load to 0A and the input supplies to

0V, 0A current limit.

3. Connect the system load to the output terminals, VOUT1

and GND1.

4. Turn on the supplies, setting the current limit up to 2A.

Adjust the voltages to the desired value, up to 18V. The

higher voltage of the two supplies should appear at the

output.

5. Turn the load on and adjust as necessary.

6. Adjust the suppliesandobservehowthe outputswitches

over to follow the higher voltage of the two sources.

LTC4414 Circuit

1. With all power off, connect auxiliary (VAUX2) and primary

(VIN2) power supplies capable of 8A each, the system

load, and meters as shown in Figure 1.

2. Preset the system load to 0A and the input supplies to

0V, 0A current limit.

3. Connect the system load to the output terminals, VOUT2

and GND2.

4. Turn on the supplies, setting the current limit up to 8A.

Adjust the voltages to the desired value, up to 36V. The

higher voltage of the two supplies should appear at the

output.

5. Turn the load on and adjust as necessary.

6. Adjust the suppliesandobservehowthe outputswitches

over to follow the higher voltage of the two sources.

Optional

7. For improved current handling, install additional MOS-

FETs, select from different package footprints, or shunt

the two circuits at VIN, VOUT and GND.

8. For source-load back-to-backisolation, removejumpers

JMP1 and JMP2, and/or JMP3 and JMP4, then install

additional MOSFETs back-to-back as shown in Figure2.

9. For external control of the primary source power path,

remove the 0Ω jumper on the CTL1 or CTL2 pin, R2 or

R5 respectively. Apply the logic-control signal on CTL1

or CTL2 as necessary.

dc1635afc

DEMO MANUAL DC1635A

QUICK START PROCEDURE

Figure 1. Test Setup of DC1635A

DC1635 F01

SYSTEM

LOAD 1

–

PRIMARY

SUPPLY 1

LTC4412

CIRCUIT

–

PRIMARY

SUPPLY 2

–

LTC4414

CIRCUIT

SYSTEM

LOAD 2

–

AUXILIARY

SUPPLY 1

+–

AUXILIARY

SUPPLY 2

+–

dc1635afc

DEMO MANUAL DC1635A

QUICK START PROCEDURE

LTC4412HV

VIN

Q1B

SiA921EDJ

JMP2

0Ω

SENSE

VAUX1

VIN1

GND

CIN1

0.1µF R1

680k

COUT1

0.1µF

STAT1

VOUT1

GATE

CTL STAT

Q1A

SiA921EDJ

JMP1

0Ω

LTC4414HV

VIN

Si7463DP

JMP4

0Ω

SENSE

VAUX2

VIN2

GND

CIN2

0.1µF R4

100k

COUT2

0.1µF

STAT2

DC1635 F02a

VOUT2

GATE

CTL STAT

Si7463DP

CIRCUIT A CIRCUIT B

JMP3

0Ω

Figure 2a. Standard Conﬁgurations with Automatic Switchover Between Sources

Figure 2b. Optional, Fully-Isolated Conﬁgurations with External Logic Control

LTC4412HV

VIN

Q1B

SiA921EDJ

Q6B

SiA921EDJ

JMP6

0Ω

SENSE

VAUX1

VIN1

CTL1

GND

CIN1

0.1µF R1

680k

COUT1

0.1µF

STAT1

VOUT1

GATE

CTL STAT

Q1A

SiA921EDJ

Q6A

SiA921EDJ

DUAL PKG DUAL PKG

JMP5

0Ω

LTC4414HV

VIN

Si7463DP

Q15

Si7463DP

JMP8

0Ω

SENSE

VAUX2

VIN2

CTL2

GND

CIN2

0.1µF R4

100k

COUT2

0.1µF

STAT2

DC1635 F02b

VOUT2

GATE

CTL STAT

Si7463DP

Q14

Si7463DP

JMP7

0Ω

Diodes shown are body diodes of their respective MOSFETs. Do not install extra diodes or the operation of the

power paths may be compromised.

dc1635afc

DEMO MANUAL DC1635A

QUICK START PROCEDURE

LTC4412HV

VIN

Si7463DP

JMP5

0Ω

SENSE

VIN1

CTL1

GND

CIN1

0.1µF GATE

CTL STAT

680k

COUT1

0.1µF

STAT1

VOUT1

DC1635 F02c

LTC4414HV

VIN

VIN2

BAT2

Si7463DP

JMP4

0Ω

SENSE

GND

CIN2

0.1µF GATE

CTL

GND2

STAT

560k

COUT2

0.1µF

STAT2

VCC2

VOUT2

DC1635 F02d

LTC4414HV

VIN

VIN1

VAUX1

BAT1

Si7463DP

FROM WALL

ADAPTER

SCHOTTKY

JMP2

0Ω

JMP1

0Ω

SENSE

GND

CIN1

0.1µF GATE

CTL STAT

560k

COUT1

0.1µF

STAT1

VOUT1 AND VOUT2

SHARED

GND1 AND GND2

SHARED

VCC1

VOUT1

LOAD

LTC4414HV

VIN

Si7463DP BAT2

JMP4

0Ω

SENSE

VIN2

CTL2

GND

GND2

CIN2

0.1µF GATE

CTL STAT

560k

STAT2

VCC2

DC1635 F02e

LTC4414HV

VIN

Si7463DP BAT1

JMP2

0Ω

SENSE

VIN1

CTL1

FROM

CHARGER

GND

GND1 AND

GND2 SHARED

VIN1 AND VIN2

SHARED

GND1

CIN1

0.1µF GATE

CTL STAT

560k

STAT1

VCC1

Figure 2c. Optional, High Side Switch with Logic Control and Status Output

(Requires 0Ω Jumper Across Drain-Source Pins of Q7)

Figure 2d. Optional, High Current Dual Battery Load Sharing

with Automatic Switchover and Status Output

Figure 2e. Optional, Dual Battery Charging with Logic Select

and Status Output

dc1635afc

DEMO MANUAL DC1635A

SCHEMATIC DIAGRAMS

D D

C C

B B

A A

DUAL PKG

NOTE FOR THIS PAGE:

TOP LAYER CIRCUITS FOR U1 AND U2 ARE ELECTRICALLY

ISOLATED FROM EACH OTHER. THEY DO NOT SHARE GND,

VIN, VAUX, OR VOUT. JUMPERS CAN BE USED TO

PARALLEL THE TWO CIRCUITS AS NECESSARY.

*CLARIFICATION: SHOWN HERE AS CONNECTED FOR TOP

LAYER CIRCUIT, BUT STUFFED ON BOTTOM LAYER.

# IF THE CTL PIN OF THE LTC4412 AND/OR LTC4414 IS NOT

USED, IT IS RECOMENDED THAT CTL BE CONNECTED TO

GND IN THE FINAL DESIGN.

ISOLATED

NOTE: UNLESS OTHERWISE SPECIFIED

1. ALL RESISTORS ARE IN OHMS, 0603.

ALL CAPACITORS ARE IN MICROFARADS, 0603.

STAT1

S1A

VOUT2

GATE1

VCC2

S2A

VCC1

S1B

GATE2

S2B

VOUT1

VIN2

CTL2

VAUX2

CTL1

STAT2

VOUT2

S2B

CTL2

GATE2

VAUX2

VOUT1

S2A

S1A

GATE1

STAT2

S1B

VIN2

VIN1

VAUX1

STAT1

CTL1

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

JOSH Y.

2ND PROTOTYPE

2 03-17-16

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

JOSH Y.

2ND PROTOTYPE

2 03-17-16

REVISION HISTORY

DESCRIPTION DATEAPPROVEDECO REV

JOSH Y.

2ND PROTOTYPE

2 03-17-16

E11 VOUT2

GND2

E13

CTL1

100K

R4 560K

(OPT)

VIN2

5V - 36V @ 8A

COUT2

0.1uF

50V

0805

GND2

VAUX2

5V - 36V @ 8A

GND1

680K

COUT1

0.1uF

50V

0805

Q2 Si7463ADP

J11

VOUT2

5V - 36V @ 8A

GND2

VOUT1

E15

VCC1

GND2

VIN2

E14

STAT1

JMP3

GND1

E12 GND2

VAUX1

JMP2

VIN1

2.5V - 18V @ 2A

E16 STAT2

CIN1

0.1uF

50V

0805

CIN2

0.1uF

50V

0805

U2 LTC4414EMS8

VIN

CTL

2STAT 1

SENSE 6

GND

NC 5

GATE 8

JMP1

Q3 Si7463ADP

E18

CTL2

U1 LTC4412HVIS6

VIN

CTL

3STAT 4

SENSE 6

GND

2GATE 5

Q1A

SiA921EDJ

VAUX2

GND1

JMP4 J12

GND2

VAUX1

3V - 18V @ 2A

E17

VCC2

E10

GND1

VIN1

Q1B

SiA921EDJ

J10 GND1

R2 560K

(OPT)

VOUT1

2.5V - 18V @ 2A

GND1

dc1635afc

DEMO MANUAL DC1635A

SCHEMATIC DIAGRAMS

D D

C C

B B

A A

OPTIONAL CIRCUIT

DUAL PKG

OPTIONAL CIRCUIT

ISOLATED

DUAL PKG

S1A

VAUX1

GATE2

S2A

CTL1

VOUT2

STJ1

GTJ1

CTL2

VIN2

GATE1

S1B

STAT1

VIN1

STAT2

VAUX2

VOUT1

S2B

GTJ2

S1A

STJ1

S2B

GATE2

STAT2

STAT1

VOUT2

GATE1

VAUX1

GTJ1

VOUT1VIN1

S1B

CTL2

VAUX2

CTL1

STJ2

VIN2

S2A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

Si7463ADP (OPT)

Q13B

OPT (SiA921EDJ)

4 3

U4 LTC4412HVIS6 (OPT)

VIN

CTL

3STAT 4

SENSE 6

GND

2GATE 5

Q12B

OPT (SiA921EDJ)

Si7463ADP (OPT)

Q13A

OPT (SiA921EDJ)

Q12A

OPT (SiA921EDJ)

Si7463ADP (OPT)

U3 LTC4414EMS8 (OPT)

VIN

CTL

2STAT 1

SENSE 6

GND

NC 5

GATE 8

dc1635afc

DEMO MANUAL DC1635A

SCHEMATIC DIAGRAMS

D D

C C

B B

A A

DUAL PKG

ISOLATED

DUAL PKG DUAL PKG

OPTIONAL CIRCUIT

DUAL PKG

OPTIONAL CIRCUIT

NOTE FOR ALL CIRCUITS:

THE DEMO BOARD AS SHIPPED SHOWS THE MOST COMMON FUNCTIONS FOR TWO

ELECTRICALLY ISOLATED CIRCUITS. THIS DEMO BOARD WAS DESIGNED TO SHOW CASE THE

MAXIMUM NUMBER OF EVALUATION OPTIONS THAT CORRESPOND TO THE CIRCUITS IN THE

DATA SHEETS BOTH ICs. HOWEVER, THERE ARE SOME IMPORTANT RULES TO ALWAYS

FOLOW:

1. NEVER INSTALL U1 (TOP LAYER) AND U3 (BOTTOM LAYER) AT THE SAME TIME. INSTALL ONE

OR THE OTHER, BUT NOT BOTH.

2. NEVER INSTALL U2 (TOP LAYER) AND U4 (BOTTOM LAYER) AT THE SAME TIME. SAME AS 1.

3. JMP1-4 ARE MEANT FOR SIMPLE DIODE-OR OPERATION. THEY MUST BE REMOVED FOR

PROPER BACK-TO-BACK ISOLATION.

THERE ARE MORE GUIDELINES SPECIFICALLY FOR CERTAIN CIRCUITS. PLEASE SEE THE QUICK

START GUIDE FOR MORE APPLICATIONS AND INFORMATION.

DUAL PKG

STJ1

GTJ1

VIN1

S1B

S2B

S2A

VAUX1

STJ1

STJ2

GTJ2

STAT2 STJ2

GATE2 GTJ2

GTJ1

S2B

VOUT1

GATE2

GATE1

S1B

VIN1

S1A

VOUT2

S1A

S2A

S2B

VOUT1

GATE1

VOUT2

VAUX1

VAUX2

VIN2

STAT1

VOUT1

S1B

STAT2

GTJ2

STJ2

STJ1

GTJ1

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

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

Thursday, March 17, 2016

DUAL LOW LOSS 36V POWERPATH CONTROLLERS

JOSH Y.

N/A

LTC4412HVIS6 & LTC4414EMS8

DEMO CIRCUIT 1635A

Q14

Si7463ADP

Q19B

Si7905DN

3 5

Q18A

Si7905DN

Q6A

SiA921EDJ

JMP6 0

JMP7 0

Q16B

Si7905DN

JMP8 0

Q17A

Si7905DN

Q19A

Si7905DN

Q6B

SiA921EDJ

4 3

Q15

Si7463ADP

JMP5 0

Q16A

Si7905DN

Q18B

Si7905DN

Q17B

Si7905DN

3 5

dc1635afc

DEMO MANUAL DC1635A

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 representa-

tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.

PARTS LIST

ITEM QTY REFERENCE PART DESCRIPTION MANUFACTURER/PART NUMBER

Required Circuit Components

1 4 COUT1, CIN1, COUT2, CIN2 CAP., X7R, 0.1µF, 50V, 10% 0805 AVX, 08055C104KAT2A

2 1 Q1 DUAL P-CHAN., 20V/4.5A VISHAY, SiA921EDJ-T1-GE3

3 2 Q2, Q3 MOSFET P-CHAN., 40V/10A VISHAY, Si7463DP-T1-GE3

4 1 R1 RES., CHIP, 690k, 1%, 0603 VISHAY, CRCW0603690KFKEA

5 1 R3 RES., CHIP, 100k, 1%, 0603 VISHAY, CRCW0603100KFKEA

6 2 R5, R6 RES., CHIP, 0Ω, 0603 VISHAY, CRCW06030000Z0EA

7 1 U1 I.C., LTC4412HVIS6 LINEAR TECH., LTC4412HVIS6#PBF

8 1 U2 I.C., LTC4414EMS8 LINEAR TECH., LTC4414EMS8#PBF

Additional Circuit Components

1 0 Q6, Q12, Q13 OPT VISHAY, SiA921EDJ-T1-GE3

2 0 Q4, Q5, Q7, Q8, Q14, Q15 OPT VISHAY, Si7463DP-T1-GE3

3 0 Q16, Q17, Q18, Q19 OPT VISHAY, Si7905DN-T1-E3

4 4 JMP1, JMP2, JMP3, JMP4 JUMPER, 1206 TEPRO, RN6087

5 2 R2, R4 RES., CHIP, 560k, 1%, 0603 VISHAY, CRCW0603560KFKEA

6 0 JMP5, JMP6, JMP7, JMP8 RES., 0603 OPT

7 0 U3 I.C., LTC4414EMS8 OPT LINEAR TECH., LTC4414EMS8#PBF

8 0 U4 I.C., LTC4412HVIS6 OPT LINEAR TECH., LTC4412HVIS6#PBF

Hardware-For Demo Board Only

1 18 E1, E2, E3, E4, E5, E6, E7, E8, E9, E10 TEST POINT, TURRET, 0.095" MILL-MAX, 2501-2-00-80-00-00-07-0

E11, E12, E13, E14, E15, E16, E17, E18 TEST POINT, TURRET, 0.095" MILL-MAX, 2501-2-00-80-00-00-07-0

2 12 J1, J2, J3, J4, J5, J6, J7, J8, J10, J11, J12 BANANA JACK KEYSTONE, 575-4

3 4 (STAND OFF) STAND OFF, NYLON 0.25" KEYSTONE, 8831 (SNAP ON)

dc1635afc

DEMO MANUAL DC1635A

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

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

 LINEAR TECHNOLOGY CORPORATION 2011

LT 0316 REV C • PRINTED IN USA

DEMONSTRATION BOARD IMPORTANT NOTICE

Linear Technology Corporation (LTC) 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 LTC 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. LTC assumes no liability for applications assistance,

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

LTC 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 LTC applica-

tion engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

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