LTC4125EUFD_技术文档

DEMO MANUAL

DC2386A-A/DC2386A-B

LTC4125EUFD and

LTC4120EUD Wireless Power Transfer

Battery Charger Demonstration Kit

DESCRIPTION

Demonstration kit DC2386A is a kit of the DC2330A

LTC^®4125EUFD demonstration board, the DC2445A-A/

DC2445A-B LTC4120EUD demonstration board, and an

assortment of different length standoffs. The DC2330A

can deliver up to 1.68W to the receive board with up to

12mmspacingbetweenthetransmitandreceivecoils.The

DC2330A transmitter supports Foreign Object Detection

via the LTC4125.

Design files for this circuit board are available at

http://www.linear.com/demo/DC2386A

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.

CONTENTS

1 × DC2330A (LTC4125EUFD) Demo Board

1 × DC2445A-A/DC2445A-B (LTC4120EUD) Demo board (with 12.5mm (0.5") Nylon Standoffs, 8.25mm Gap), see Figure 3

4 × 6.25mm (0.25˝) Nylon Standoffs (2.0mm Gap)

4 × 9.5mm (0.375˝) Nylon Standoffs (5.25mm Gap)

4 × 15.9mm (0.625˝) Nylon Standoffs (11.65mm Gap)

Kit Build Options

KIT NUMBER

DC2386A-A

DC2386A-B

T BOARD

LTC T PART NUMBER

R BOARD

LTC R PART NUMBER

R OPTION

X

DC2330A

LTC4125EUFD

DC2445A-A

DC2445A-B

LTC4120EUD-4.2

LTC4120EUD

Fixed 4.2V Float Voltage

Adjustable Float Voltage

PERFORMANCE SUMMARY ^{Specifications are at T}_A^{= 25°C}

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

5.5

UNITS

V

IN

DC2330A Voltage Input

I

≤ 2.5A

= 5V

3

V

A

VIN

I

DC2330A V Current

V

IN

2.0

VIN

IN

V

DC2445A-A BAT Pin Voltage

DC2445A-B BAT Pin Voltage

DC2445A BAT Pin Current

4.15

4.2

4.25

V

BAT

R9 = 1.40MΩ, R10 = 1.05MΩ

V

I

V = 3.7V, DC2445A-A/DC2445A-B(R5) = 3.01kΩ

BAT

= 400mA (Figure 3)

370mA 385mA 400mA

8.25

A

AIR GAP

Separation Between LT and LR

I

mm

X

BAT

Figure 1. DC2330A Picture

Figure 2. DC2445A-A/DC2445A-B Picture

dc2386aabfa

1

DEMO MANUAL

DC2386A-A/DC2386A-B

QUICK START PROCEDURE

Refer to Figure 4 for the proper measurement equip-

ment setup and jumper settings, DC2445A mounting on

DC2330A, and follow the procedure below.

lighting up sequentially. When a valid load is found the

LED sweeping will freeze until the next search period,

≈ 3.7s later. Note that the last LED, the red LED, should

not normally be lit.

NOTE. When measuring the input or output voltage ripple,

care must be taken to avoid a long ground lead on the

oscilloscope probe. Measure the input or output voltage

Observe AM1 and AM2. AM2 should have increased

from ≈10mA RMS, 250mA peak to about 600mA. AM1

should be reading 380mA ~ 400mA of charge current

into the battery emulator. All the charge LEDs on the

DC2445A-X should now be lit.

ripple by touching the probe tip directly across the V

CC

or V and GND terminals. See Figure 5 for proper scope

IN

probe technique.

1. Place the DC2445A-A/DC2445A-B board atop the

DC2330A board, by aligning: (See Figure 4)

If the DC2445A-X board is receiving power, it will at-

tempt to charge the battery. Again this is evinced by

the green LEDs lighting. If all the green LEDs are lit,

the LTC4120EUD, on the DC2445A, is charging at the

full programmed battery charge current.

DC2330A Mounting Hole

DC2445A-A/B MH

MH3

MH2

MH4

MH6

=>

MH1

MH2

MH3

MH4

=>

3. The LTC4125EUFD on the DC2330A, keeps the transmit

power at slightly more than the load requires for ≈ 3.7s,

then searches again. This is why the blue LEDs on the

DC2330A go out and start ramping up again.

This should result in the transmit antenna being directly

above the receive antenna, with the centers aligned.

The standoffs on the DC2445A-A/DC2445A-B are

0.5"(12.5mm) when shipped. This results in an air gap

of 8.25mm (See Figure 3). The DC2386A kit ships with

three additional standoff sizes. This allows the air gap

to be varied from 0.083" (~2.0mm) to 0.46" (~11.6mm).

4. When the system is operating correctly, slide a piece of

blank PCB*, or coin between the transmit and receive

coils. The transmit current should immediately drop to

0A. This is the Foreign Object Detection in operation,

preventing a foreign object from getting hot.

5. Please change the standoffs on the DC2445A-A/

DC2445A-B board to yield the air gap most appropriate

for your project.

2. Set PS1 = 3.7V, PS2 = 5V, and enable the power sup-

plies. The DC2330A should start sweeping the LT cur-

2

X

*Testing with a blank PCB of at least 10cm (1.5 IN ) of copper.

rent looking for a load. This is evinced by the blue LEDs

LR EMBEDDED

X

IN PCB

F01

DC2445 PCB

8.25mm

4×12.5mm (0.5 INCH)

12.5mm

STANDOFFS

LT

X

DC2330 PCB

4.25mm

Figure 3. As Shipped Demo Kit Air Gap

dc2386aabfa

2

DEMO MANUAL

DC2386A-A/DC2386A-B

QUICK START PROCEDURE

+

–

PS1

+

3.7V BIPOLAR SUPPLY

AM1

1A

–

CONNECTING THE DC2445A-A/DC2445A-B

+

–

+

–

PS2

5V SUPPLY

1A

AM2

CONNECTING THE DC2330A

+

–

+

–

PS2

5V SUPPLY

1A

AM2

+

–

PS1

+

3.7V BIPOLAR SUPPLY

AM1

1A

–

DC2445A-A/DC2445A-B MOUNTED ON TOP OF DC2330A

Figure 4. Equipment Setup for DC2386A–A/DC2386A–B Kit

Figure 5. Measuring Input or Output Ripple

Note: All connections from equipment should be Kelvin connected directly to the board pins which they are con-

nected on this diagram and any input or output leads should be twisted pair.

dc2386aabfa

3

DEMO MANUAL

DC2386A-A/DC2386A-B

THEORY OF OPERATION

The DC2386A kit demonstrates operation of a magneti-

cally coupled resonant Wireless Power Transfer (WPT)

system. The LTC4125EUFD transmitter searches for a

suitable load, and powers it until the next search period.

The LTC4120EUD battery charger uses DHC to control its

input power ensuring full power charging under a variety

of operating conditions.

SW pin is set to V , it increases the current flowing in

X IN

the transmitter series resonant LC circuit. The absolute

valueofthetankcurrentisdeterminedbytheresonanttank

components and also by the reflected load impedance.

The LTC4125EUFD sweeps the duty cycle by way of a 5

bit DAC that sets the PTH voltage, and hence duty cycle.

X

The FB pin is driven by the node forming the junction of

DC2330A – Wireless Power Transmitter Board

featuring the LTC4125EUFD

the transmit coil, LT , and the transmit capacitor, CT .

X X

The voltage at this node is proportional to the circulating

current in the transmitter resonant tank (see Figure 8).

TheDC2330AWirelessPowerTransmitterisusedtopower

a load wirelessly. In this kit, it is used in conjunction with

the DC2445A-X Wireless Power Receiver Board to charge

a Li-Ion battery.

The LTC4125EUFD monitors the FB pin and when a valid

exitconditionisfound, stopsincrementingthePTHVDAC.

The PTH VDAC is held at the detection level for the rest

of the sweep cycle. Some exit conditions are adjustable

by the user, and some are proprietary and not adjustable.

The LTC4125EUFD implements an AutoResonant drive of

the series resonant tank composed of LT (See LT Table 1

X

for a list of tested LT coils) and CT (See DC2330A Sche-

As load power requirements may change or foreign ob-

jects may enter the WPT transfer field, the LTC4125EUFD

periodicallyrepeatsthesweepasdescribedabove.Several

of the components of the sweep period are adjustable,

but the DC2330A sets the overall sweep period to about

3.7s (see Figure 9).

X

matic on page 12). The AutoResonant drive uses a zero

crossing detector to determine the resonant frequency

of the series LC circuit. All subsequent duty cycles dis-

cussed here use the resonant period determined by the

AutoResonant circuitry.

The SW1 and SW2 pins each have a half bridge drive. At

The AutoResonant detect circuity will shift the transmitter

frequency for some fault conditions, particularly Foreign

Object Detection (FOD).

zerocurrentcrossing,whicheverSW pinhascurrentflow-

X

ing out of the pin, is set to V for a duty cycle determined

IN

by the corresponding PTH pin (see Figure 10). When the

X

Table 1. Tested LTX Coils

Vendor

Part Number

760308100110

L4000T02

URL

http://www.we-online.com

Würth

Inter-Technical

Sunlord

http://www.inter-technical.com/index.php?page=products#

http://www.sunlordinc.com/

SWA50N50H35C05B

dc2386aabfa

4

DEMO MANUAL

DC2386A-A/DC2386A-B

THEORY OF OPERATION

Figure 6. Coil Side of Transmit Coil, LT_X

Figure 7. Backside of Transmit Coil, LT_X

Figure 8. FB ∝ I(LT_X), Lt. Blue = LTC4125.FB, Grn. = I(LT_X)

Figure 9. Dk. Blue = V(PTH), Lt. Blue = LTC4125.FB,

Pk. = V(PROG), Grn. = LTC4120.IN

dc2386aabfa

5

DEMO MANUAL

DC2386A-A/DC2386A-B

THEORY OF OPERATION

Figure 10. Dk. Blue = LTC4125.SW1,

Lt. Blue = LTC4125.SW2, Grn. = I(LT_X)

Figure 11. Dk. Blue = LTC4120.IN, Grn. = I(BAT)

TheLTC4125EUFDalsomonitorstheFBforfaultconditions

and terminates the sweep if one is detected.

ferrite shield temperature, especially on the distal surface

of the ferrite shield.

Figure 6 is a thermal image of the coil side of the Wurth

760308100110 transmit coil at 42.0°C, and Figure 7 is a

thermal image of the backside of the same coil at 41.7°C.

Figure 7 is was taken in free air, after heating the coil while

in contact with the DC2330A PCB. The NTC is located in

hole N, which is aligned with the ring of max temperature,

Thermal Shutdown

The LTC4125 needs to produce a large magnetic field in

LT , in order to transfer as much power as possible. The

X

magnetic field is proportional to the current flowing in

LT , and the RMS value of the current flowing in LT will

X

dissipate any power not transferred to the load.

on the backside of the transmit coil, LT .

X

The LTC4125 uses an NTC resistor to monitor the tem-

These thermal images are very specific to the Wurth

760308100110 transmit coil and PCB mount. This study

should be repeated for any application circuit, using a

different transmit coil to ensure proper NTC placement.

perature of LT and shut off the transmit power if the NTC

X

reports a temperature higher than ≈ 42°C. Please see the

applications section of the data sheet for more detailed

information.

DC2445A-A/DC2445A-B – Wireless Power Receiver

Board featuring the LTC4120EUD

Transmit coils are often quite large and bulky, composed

of the windings and a very usually a ferrite shield. It is

undesirable to place the temperature monitoring NTC

resistor on the windings. This is because the winding are

radiating power, and the NTC resistor and wires form a

loop. If this loop is immediately adjacent to the transmit

coil windings, it will pick up significant voltage and apply

it to the LTC4125 NTC pin.

The DC2445A-A/DC2445A-B demo board implements

a series resonant LC circuit. The AC waveform on the

resonant circuit is rectified and applied to the IN pin

of the LTC4120EUD Wireless power receiver IC. The

Undervoltage Current limit (UVCL) of the LTC4120EUD

is at ≈ 12V. So, when V exceeds the UVCL threshold,

IN

the LTC4120EUD tries to charge a battery on its BAT

pin. The LTC4120EUD also has Dynamic Harmonization

Control (DHC), which can be used to tune or detune the

The ideal place for the NTC would be on the side of the

transmitcoildistaltothewindings.Thereforeitisnecessary

tostudytherelationshipbetweenwindingtemperatureand

dc2386aabfa

6

DEMO MANUAL

DC2386A-A/DC2386A-B

THEORY OF OPERATION

Figure 12. Power Transfer vs Axial Distance and Misalignment

dc2386aabfa

7

DEMO MANUAL

DC2386A-A/DC2386A-B

THEORY OF OPERATION

receive circuit to receive more or less power as needed.

The DC2445A-X is designed to work with the DC2330A

wireless power transmitter board. The LTC4125EUFD on

the DC2330A is already searching for an appropriate load

so the DHC loop has been repurposed on the DC2445A

demo board to provide presence detect.

The Battery Charger

The battery charger is a current mode buck regulator from

IN to BAT. The current in the switching inductor (L1) is

monitored by an on die current sense resistor between

the CHGSNS and BAT pins.

This current is used for cycle by cycle PWM duty cycle

determination, and averaged to indicate battery charge

current.

DHC

BecausetheLTC4125EUFDontheDC2330Awirelesspower

transmitter already searches for an appropriate load, the

DHC loop on the DC2445A has been repurposed. When

The charger is a full featured CC-CV charger, with low bat-

tery trickle charge (See Figure 11). The Charge Voltage is

fixedat4.2VfortheLTC4120EUD-4.2, andprogrammable

on the LTC4120EUD. The charge current is programmed

by the resistor on the PROG pin, R5 on the DC2445A-X.

V

is above 14V, the DHC pin is high impedance, and

IN

when it is below 14V it is grounded through a MOSFET.

The receive tank is tuned to a fixed 127kHz, and on the

DC2445A-X the DHC does not change this frequency. On

theDC2445A-XtheDHCpinisusedtoactivatea15Vclamp.

The assertion of this clamp signals the LTC4125, on the

DC2330A board, that it is transmitting sufficient power.

Summary

The DC2386A Wireless Power Transfer Battery Char-

ger Demonstration Kit allows full exploration of

the LTC4125EUFD Wireless Power Transmitter and

LTC4120EUD Wireless Power battery charger.

The DC2386A makes it possible to determine how the

LTC4125EUFD identifies a valid load or foreign object.

dc2386aabfa

8

DEMO MANUAL

DC2386A-A/DC2386A-B

PARTS LIST

ITEM

QTY

REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

DC2330A Required Circuit Components

1

2

1

2

1

2

1

0

CT

CAP, CHIP, C0G, 0.1µF, 5%, 100V, 1206

CAP, CHIP, X7R, 0.01µF, 10%, 50V, 0402

CAP, CHIP, X7R, 4700pF, 10%, 50V, 0402

CAP, CHIP, C0G, 470pF, 10%, 50V, 0402

CAP, CHIP, X5R, 0.1μF, 10%, 25V, 0402

CAP, CHIP, X7R, 0.1µF, 10%, 100V, 0603

CAP, CHIP, X5R, 1µF, 10%, 16V, 0402

CAP, CHIP, X5R, 47µF, 20%, 6.3V, 0805

TDK, C3216C0G2A104J160AC

TDK, C1005X7R1H103K050BB

MURATA, GRM155R71H472KA01

KEMET, C0402C471K5GACTU

TDK, C1005X5R1E104K050BC

MURATA, GRM188R72A104KA35D

TDK, C1005X5R1C105K050BC

TDK, C2012X5R0J476M125AC

X

C4, C5

C6

3

4

C7

5

C8

6

C9

7

C10

C11, C12

D3

8

9

DIODE, SMT, SCHOTTKY, 30V, 200mA, 0.6mm × 1.0mm DFN2

DIODES INC., BAT54LP

DIODES INC., BAS521-7

10

11

12

13

14

15

D4

DIODE, SMT, 100V, 250mA, 50ns, SOD523

LT

x

Transmit Antenna, 24µH, 10%, 6A, 0.1Ω, Round, 50mm Diameter WURTH, 760308100110

NTC Assembly

NTC Resistor Assembly, 10k AT 25°C, 1%

RES, CHIP, 4 Terminal, 22mΩ, 1%, 1W, 3216T4

RES, CHIP, 12.4kΩ, 1%, 1/16W, 040+D20:D262

RES, CHIP, TBD, 1%, 1/16W, 0402

MURATA, FTN55XH103FD4B

SUSUMU, KRL3216T4-M-R022-F

VISHAY, CRCW040212K4FKED

TBD

R2

R3

R4-OPT, R7-OPT,

R11-OPT

16

17

18

19

20

21

22

23

24

2

1

R5, R6

R8

RES, CHIP, 100kΩ, 1%, 1/16W, 0402

RES, CHIP, 0Ω Jumper, 1/16W, 0402

RES, CHIP, 3.83kΩ, 1%, 1/16W, 0402

RES, CHIP, 59.0kΩ, 1%, 1/16W, 0402

RES, CHIP, 348kΩ, 1%, 1/16W, 0402

RES, CHIP, 5.23kΩ, 1%, 1/16W, 0402

RES, CHIP, 100kΩ, 1%, 1/8W, 350V, 0603

RES, CHIP, 10kΩ, 1%, 1/16W, 0402

VISHAY, CRCW0402100KFKED

VISHAY, CRCW04020000Z0ED

VISHAY, CRCW04023K83FKED

VISHAY, CRCW040259K0FKED

VISHAY, CRCW0402348KFKED

VISHAY, CRCW04025K23FKED

ROHM, KTR03EZPF1003

R9

R10

R14

R15

R16

R18

U1

VISHAY, CRCW040210K0FKED

IC, AutoResonant Wireless Power Transmitter, 4mm × 5mm QFN20 LINEAR TECH., LTC4125EUFD#PBF

Additional Demo Board Circuit Components

1

2

3

2

0

1

7

3

8

1

2

1

C1, C2, C3

C13, C15, C16

C14, C17

D1, D13

D2-OPT

D5

CAP, CHIP, X5R, 100μF, 20%, 6.3V, 1206

CAP, CHIP, X7R, 0.01µF, 10%, 50V, 0402

CAP, CHIP, X5R, 1µF, 10%, 16V, 0402

LED, RED, SMT, 0603

MURATA, GRM31CR60J107ME39L

TDK, C1005X7R1H103K050BB

TDK, C1005X5R1C105K050BC

LUMEX, SML-LX0603SIW-TR

DIODES INC., BAT54LP

3

4

5

DIODE, SMT, SCHOTTKY, 30V, 200mA, 0.6mm × 1.0mm DFN2

LED, GREEN, SMT, 0603

6

LUMEX, SML-LX0603SUGW-TR

LITE-ON, LTST-C193TBKT-5A

VISHAY, CRCW04022K20JNED

VISHAY, CRCW0402102KFKED

VISHAY, CRCW04020000Z0ED

VISHAY, CRCW040210K0JNED

VISHAY, CRCW0402432RFKED

VISHAY, CRCW040215K4FKED

VISHAY, CRCW040227K4FKED

VISHAY, CRCW0402340KFKED

7

D6 ~ D12

R1, R17, R41

R12, R24 ~ R30

R13

LED, BLUE, SMT, 0603

8

RES, CHIP, 2.2kΩ, 5%, 1/16W, 0402

RES, CHIP, 102kΩ, 1%, 1/16W, 0402

RES, CHIP, 0Ω jumper, 1/16W, 0402

RES, CHIP, 10kΩ, 5%, 1/16W, 0402

RES, CHIP, 432Ω, 1%, 1/16W, 0402

RES, CHIP, 15.4kΩ, 1%, 1/16W, 0402

RES, CHIP, 27.4kΩ, 1%, 1/16W, 0402

RES, CHIP, 340kΩ, 1%, 1/16W, 0402

9

10

11

12

13

14

15

R19

R20, R33

R21

R22

R23

dc2386aabfa

9

DEMO MANUAL

DC2386A-A/DC2386A-B

PARTS LIST

ITEM

QTY

REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

VISHAY, CRCW040211K3FKED

VISHAY, CRCW0402787KFKED

VISHAY, CRCW04026K20JNED

VISHAY, CRCW06031R00JNED

LINEAR TECH., LTC1445CDHD#PBF

16

1

R31

RES, CHIP, 11.3kΩ, 1%, 1/16W, 0402

RES, CHIP, 787kΩ, 1%, 1/16W, 0402

RES, CHIP, 6.20kΩ, 5%, 1/16W, 0402

RES, CHIP, 1Ω, 5%, 1/10W, 0603

17

1

R32

18

7

R34 ~ R40

R42-OPT, R43

U2, U3

19

1

20

2

IC, Ultralow Power Quad Comparators with Reference, 3mm ×

3mm DFN8

Hardware: For Demo Board Only

1

2

3

4

5

6

7

8

3

2

E1, E4, E5

E2, E3

TURRET, 0.09" DIA

MILL-MAX, 2501-2-00-80-00-00-07-0

KEYSTONE, 575-4

Vertical Nana Jack, 575-4

Micro-USB Receptacle

1

J1

WURTH, 629105136821

MURATA, MM5829-2700RJ4

Wurth, 62000311121

1

J2

JSC Connector for NTC Assembly

3 PIN JUMPER, 2mm

3

JP1, JP2, JP3

3

SHUNT, 2mm

SAMTEC, 2SN-KB-G

4

STAND - OFF, NYLON, 0.375" Tall (Snap on)

KEYSTONE, 8832 (SNAP ON)

3M, MMM109

0.01

SCOTCH, REMOVABLE POSTER TAPE W/DISPENSER, 0.75in.x

150in.

9

0.0004

Heat Cure Thermal Epoxy, 30CC tube

ELLSWORTH ADH. 3-6752 TC Adhesive

75G

DC2445A-A/DC2445A-B Required Circuit Components

1

2

1

2

1

0

1

2

1

2

1

C2S1

C1

CAP, CHIP, C0G, 0.033µF, 5%, 50V, 1206/0805

CAP, CHIP, X5R. 4.7μF, 10%, 25V, 0805

CAP, CHIP, X5R, 47µF, 10%, 16V, 1210

CAP, CHIP, X7R, 0.01µF, 10%, 50V, 0402

CAP, CHIP, X5R, 2.2µF, 20%, 6.3V, 0402

CAP, CHIP, X7S, 10µF, 20%, 50V, 1210

CAP, CHIP, X5R, 47μF, 20%, 6.3V, 0805

DIODE, SCHOTTKY, 40V, 2A, PowerDI123

DIODE, ZENER, 13V, 5%, 150mW, SOD-523

DIODE, Zener, 39V, 5%, 1W, PowerDI123

25mm Ferrite Disc

TDK, C2012C0G1H333J125AA

TDK, C2012X5R1E475K

3

C2

MURATA, GRM32ER61C476KE15L

TDK, C1005X7R1H103R050BB

MURATA, GRM155R60J225ME15D

TDK, C3225X7S1H106M

4

C3

5

C4

6

C5

7

C11

D1, D2

D3

TDK, C2012X5R0J476M

8

DIODES, DFLS240L

9

DIODES, BZT52C13T-7

10

11

12

13

14

15

16

17

18

19

20

21

26

22

23

D4

DIODES, DFLZ39

FD1

LRx

L1

ELNA MAGNETICS, B67410-A0223-X195

EMBEDDED

IND, EMBEDDED, 47µH, 43 Turns

IND, SMT, 15µH, 260mΩ, 20%, 0.86A, 4mm × 4mm

MOSFET, SMT, 60V, 72mΩ, PowerPAK1212-8

MOSFET, SMT, 30V, 75mΩ, SOT23

LPS4018-153ML

M1

VISHAY, Si7308DN-T1-GE3

VISHAY, Si2343CDS-T1-GE3

Diodes Inc, MMBT3904-7-F

VISHAY, CRCW04021M40FKED

VISHAY, CRCW0402412KFKED

VISHAY, CRCW040210K0FKED

VISHAY, CRCW04023K01FKED

VISHAY, CRCW04020000Z0ED

VISHAY, CRCW04025K10JNED

VISHAY, CRCW04021K00JNED

VISHAY, CRCW040224K9FKED

M2

Q1

NPN, SMT, 40V, SOT23

R1

RES, CHIP, 1.40M, 1%, 1/16W, 0402

RES, CHIP, 412kΩ, 1%, 1/16W, 0402

RES, CHIP, 10kΩ, 1%, 1/16W, 0402

RES, CHIP, 3.01kΩ, 1, 1/16W, 0402

RES, CHIP, 0Ω Jumper, 1/16W, 0402

RES, CHIP, 5.1kΩ, 5%, 1/16W, 0402

RES, CHIP, 1kΩ, 5%, 1/16W, 0402

RES, CHIP, 24.9kΩ, 1%, 1/16W, 0402

R2

R3, R7

R5

R6, R8

R12

R36

R37

dc2386aabfa

10

DEMO MANUAL

DC2386A-A/DC2386A-B

SCHEMATIC DIAGRAM

ITEM

QTY

REFERENCE

PART DESCRIPTION

MANUFACTURER/PART NUMBER

VISHAY, CRCW0402470KJNED

VISHAY, CRCW040251K0JNED

24

1

R38

RES, CHIP, 470kΩ, 5%, 1/16W, 0402

RES, CHIP, 51kΩ, 5%, 1/16W, 0402

25

1

R39

Additional Demo Board Circuit Components

1

2

1

2

3

8

1

2

1

7

1

8

1

2

C2S2-OPT

C7, C10

C6, C8, C9

D5 ~ D12

R4

CAP, CHIP, C0G,TBD, 5%, 50V, 0603

CAP, CHIP, X5R, 1µF, 10%, 16V, 0402

CAP, CHIP, X7R, 0.01µF, 10%, 25V, 0402

DIODE, LED, GREEN, 0603

TBD

TDK, C1005X5R1C105K

3

TDK, C1005X7R1E103K

4

LITE-ON, LTST-C193KGKT-5A

VISHAY, CRCW04022K00JNED

VISHAY, CRCW0402100KJNED

VISHAY, CRCW040210K0JNED

VISHAY, CRCW0402432RFKED

VISHAY, CRCW040222K6FKED

VISHAY, CRCW040234K8FKED

VISHAY, CRCW0402100KFKED

VISHAY, CRCW040249K9FKED

VISHAY, CRCW04021K00JNED

VISHAY, CRCW0402787KFKED

5

RES, CHIP, 2kΩ, 5%, 1/16W, 0402

RES, CHIP, 100kΩ, 5%, 1/16W, 0402

RES, CHIP, 10kΩ, 5%, 1/16W, 0402

RES, CHIP, 432Ω, 1%, 1/16W, 0402

RES, CHIP, 22.6kΩ, 1%, 1/16W, 0402

RES, CHIP, 34.8kΩ, 1%, 1/16W, 0402

RES, CHIP, 100kΩ, 1%, 1/16W, 0402

RES, CHIP, 49.9kΩ, 1%, 1/16W, 0402

RES, CHIP, 1kΩ, 5%, 1/16W, 0402

RES, CHIP, 787kΩ, 1%, 1/16W, 0402

6

R11

7

R13

8

R14, R35

R15, R33

R16

9

10

11

12

13

14

15

R17 ~ R23

R24

R25 ~ R32

R34

U2, U3

Ultralow Power Quad Comparators with Reference, 5mm × 4mm

DFN16

LINEAR TECH., LTC1445CDHD

Hardware: For Demo Board Only

1

6

E1, E2, E5, E6, E9, TURRET, 0.091"

E10

MILL-MAX, 2501-2-00-80-00-00-07-0

2

3

4

5

6

7

8

4

E3, E4, E7, E8

J1-OPT

TURRET, 0.061"

MILL-MAX, 2308-2-00-80-00-00-07-0

HIROSE, DF3-3P-2DSA

SAMTEC, TMM-103-02-L-S

SAMTEC, TMM-104-02-L-S

SAMTEC, 2SN-BK-G

0

CONN, 3 Pin Polarized

HEADER, 3 PIN JUMPER, 2mm

HEADER, 4 PIN JUMPER, 2mm

SHUNT, 2mm

4

JP1, JP3-JP5

JP2

1

5

JP1-JP5

4

Clear 0.085" × 0.335" bumper

KEYSTONE, 784-C

0.005

SCOTCH, REMOVABLE POSTER TAPE W/DISPENSER, 0.75in. ×

0.75in.

3M, MMM109

9

4

STAND-OFF, NYLON, 0.375"

KEYSTONE, 8832

DC2445A-A Required Circuit Components

1

2

3

0

1

R9

No Load. SMD 0402

R10

U1

RES, CHIP, 0Ω Jumper, 1/16W, 0402

VISHAY, CRCW04020000Z0ED

400mA Wireless Synchronous Buck Battery Charger, 3mm × 3mm LINEAR TECH., LTC4120EUD-4.2

QFN16

DC2445A-B Required Circuit Components

1

2

3

1

R9

RES, CHIP, 1.40M, 1%, 1/16W, 0402

RES, CHIP, 1.05M, 1%, 1/16W, 0402

VISHAY, CRCW04021M40FKED

VISHAY, CRCW04021M05FKED

R10

U1

400mA Wireless Synchronous Buck Battery Charger, 3mm × 3mm LINEAR TECH., LTC4120EUD

QFN16

dc2386aabfa

11

DEMO MANUAL

DC2386A-A/DC2386A-B

SCHEMATIC DIAGRAM

2

1

D

G N

6

7

8

9

dc2386aabfa

12

DEMO MANUAL

DC2386A-A/DC2386A-B

SCHEMATIC DIAGRAM

F E R -

V

8

9

F E R -

V

8

9

dc2386aabfa

13

DEMO MANUAL

DC2386A-A/DC2386A-B

SCHEMATIC DIAGRAM

dc2386aabfa

14

DEMO MANUAL

DC2386A-A/DC2386A-B

SCHEMATIC DIAGRAM

F E R -

V

8

9

F E R -

V

8

9

dc2386aabfa

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.

15

DEMO MANUAL

DC2386A-A/DC2386A-B

DEMONSTRATION BOARD IMPORTANT NOTICE

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

Thisdemonstrationboard(DEMOBOARD)kitbeingsoldorprovidedbyLinearTechnologyisintendedforuseforENGINEERINGDEVELOPMENT

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.

Thisnoticecontainsimportantsafetyinformationabouttemperaturesandvoltages. Forfurthersafetyconcerns, pleasecontactaLTCapplication

engineer.

Mailing Address:

Linear Technology

1630 McCarthy Blvd.

Milpitas, CA 95035

dc2386aabfa

LT 0316 REV A • PRINTED IN USA

LinearTechnology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

16

●

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


型号：	LTC4125EUFD
厂家：	Linear
描述：	Wireless Power Transfer Battery Charger Demonstration Kit 电池无线
文件：	总16页 (文件大小：1301K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

LTC4125EUFD [Linear]

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