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Bill of Materials

8

Bill of Materials

Table 1. Bill of Materials for LM2745 POL EVB (Vin: 8V to 14V, Vout:3.3V, 19A)

Locatio

Part Number

Type

Size

Parameters

Qty

Vendo

n

r

U1

LM2745

Syn. Buck Controller

TSSOP-14

Vin: 4.5V - 5.5V

1

NSC

U2

LM27937IMP-5.0

Linear Regulator 5V,500mA

SOT-223

5V, 500mA

1

NSC

L1

SER2010-202ML

Inductor

2uH, 27A, 0.852mohm

1

Coilcraf

t

Q1-2

IRF6633

N-MOSFET

DirectFET-MP

20V, 16A, 4.1mohm,

2

Vishay

11nC

Q3

IRF6609

N-MOSFET

DirectFET-MT

20V, 150A, 2mohm,

1

Vishay

46nC

D1

SL22-E3/2C

Schottky Diode

SMB

20V, 2A

1

Vishay

D2

MBRS0520

Schottky Diode

SOD123

20V, 0.5A

1

Vishay

C1, 2

GRM32ER61C226KE20L

Ceramic Capacitor

1210

22µF, 25V, X7R, 5%

2

Murata

C3, 11

GRM319R71H104KA01B

Ceramic Capacitor

1206

100nF, 25V, X7R, 10%

2

Murata

C14

GRM319R71H474KA01B

Ceramic Capacitor

1206

470nF, 25V, X7R, 10%

1

Murata

C9

GRM1885C1H1210JA01

Ceramic Capacitor

0603

120pF, 50V, C0G, 5%

1

Murata

C6

GRM188R71H222KA01

Ceramic Capacitor

0603

2.2nF, 50V, X7R, 10%

1

Murata

C7

GRM1885C1H101JA01

Ceramic Capacitor

0603

100pF, 50V, C0G, 5%

1

Murata

C8

GRM188R71H332KA01

Ceramic Capacitor

0603

3.3nF, 50V, X7R, 10%

1

Murata

C10

GRM188R71H153KA01

Ceramic Capacitor

0603

15nF, 50V, X7R, 10%

1

Murata

C12

GRM40X7R472K25

Ceramic Capacitor

0805

470nF, 25V, X7R, 10%

1

Murata

C13

12066D226MAT

Ceramic Capacitor

1206

22µF, 6.3V, X5R, 20%

1

AVX

C4, 5

6SVPC220M

OS-CON

C6

220µF, 6.3V, 20%

2

Sanyo

R1,18

CRCW06030R00F

Chip Resistor

0603

0ohm

2

Vishay

R2

CRCW06032151F

Chip Resistor

0603

2.15k, 1%

1

Vishay

R3, R17

CRCW06031002F

Chip Resistor

0603

10k, 1%

2

Vishay

R4

CRCW06032211F

Chip Resistor

0603

2.21k, 1%

1

Vishay

R10, 11

CRCW06031003F

Chip Resistor

0603

100k, 1%

2

Vishay

R5, 6, 8

CRCW06032R21F

Chip Resistor

0603

2.21ohm, 1%

3

Vishay

R7, 9

CRCW06034702F

Chip Resistor

0603

47k, 1%

2

Vishay

R12

CRCW06038451F

Chip Resistor

0603

8.45k, 1%

1

Vishay

R15

CRCW06031821F

Chip Resistor

0603

1.82k, 1%

1

Vishay

R16

CRCW060310R0F

Chip Resistor

0603

10ohm, 1%

1

Vishay

-

-

F-Pin

8

-

-

Pin 90 deg., SIP, 6 way

Pitch: 2.54mm

1

7

SNVA213A – May 2007 – Revised May 2013

AN-1573 LM2745-19A Demonstration Board

Submit Documentation Feedback

Copyright © 2007–2013, Texas Instruments Incorporated

Содержание LM2745-19A

Страница 1: ...V to 3 3V at 19A with a switching frequency of 300 kHz Note the demo board is optimized for the above parameters thus for additional design modifications refer to the Design Consideration section of the LM2745 data sheet The PCB is designed on four layers the top and bottom layers are 2oz copper and the two inner layers are 1oz copper The board measures 2 19 in x 1 03 in x 0 41 in 56 mm x 26 2 mm ...

Страница 2: ... frequency synchronize range 250 kHz to 1 MHz Current Limit Protection Master power supply start up tracking function Start up with a pre biased output load Adjustable soft start Small size 2 19 in x 1 03 in x 0 41 in 56 mm x 26 2 mm x 10 3 mm 5 Performance Characteristics Efficiency Figure 2 Efficiency vs Load Current VOUT 3 3V fSW 300 kHz 2 AN 1573 LM2745 19A Demonstration Board SNVA213A May 200...

Страница 3: ...le Figure 3 VIN 8V VOUT 3 3V ILOAD 100 mA fSW 300 kHz 20 MHz Bandwidth Limit Figure 4 VIN 8V VOUT 3 3V ILOAD 19A fSW 300 kHz 20 MHz Bandwidth Limit 3 SNVA213A May 2007 Revised May 2013 AN 1573 LM2745 19A Demonstration Board Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 4: ...3 3V ILOAD 100 mA fSW 300 kHz 20 MHz Bandwidth Limit Figure 6 VIN 14V VOUT 3 3V ILOAD 19A fSW 300 kHz 20 MHz Bandwidth Limit 4 AN 1573 LM2745 19A Demonstration Board SNVA213A May 2007 Revised May 2013 Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 5: ...Transient Response Figure 7 VIN 14V VOUT 3 3V ILOAD 2A to 10A CH1 VOUT CH2 ILOAD Figure 8 VIN 14V VOUT 3 3V ILOAD 11A to 19A CH1 VOUT CH2 ILOAD 5 SNVA213A May 2007 Revised May 2013 AN 1573 LM2745 19A Demonstration Board Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 6: ...ti com Figure 9 VIN 8V VOUT 3 3V ILOAD 2A to 10A CH1 VOUT CH2 ILOAD Figure 10 VIN 8V VOUT 3 3V ILOAD 11A to 19A CH1 VOUT CH2 ILOAD 6 AN 1573 LM2745 19A Demonstration Board SNVA213A May 2007 Revised May 2013 Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 7: ... Murata C7 GRM1885C1H101JA01 Ceramic Capacitor 0603 100pF 50V C0G 5 1 Murata C8 GRM188R71H332KA01 Ceramic Capacitor 0603 3 3nF 50V X7R 10 1 Murata C10 GRM188R71H153KA01 Ceramic Capacitor 0603 15nF 50V X7R 10 1 Murata C12 GRM40X7R472K25 Ceramic Capacitor 0805 470nF 25V X7R 10 1 Murata C13 12066D226MAT Ceramic Capacitor 1206 22µF 6 3V X5R 20 1 AVX C4 5 6SVPC220M OS CON C6 220µF 6 3V 20 2 Sanyo R1 18...

Страница 8: ...N C13 VOUT GND C12 D1 Q2 SD R6 R5 R7 R8 R9 R18 U1 U2 C7 SYNC R14 R13 TRACK SJ2 PWGD SD TRIM SENSE SJ1 VCC ISEN PCB Layout www ti com Figure 11 300 kHz Demo Board Schematic 9 PCB Layout Figure 12 Top Silkscreen 8 AN 1573 LM2745 19A Demonstration Board SNVA213A May 2007 Revised May 2013 Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 9: ... Top Copper Layer Figure 14 Bottom Silkscreen Figure 15 Bottom Copper Layer 9 SNVA213A May 2007 Revised May 2013 AN 1573 LM2745 19A Demonstration Board Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 10: ...e 16 Internal Layer 1 GND Copper Figure 17 Internal Layer 2 GND Copper 10 AN 1573 LM2745 19A Demonstration Board SNVA213A May 2007 Revised May 2013 Submit Documentation Feedback Copyright 2007 2013 Texas Instruments Incorporated ...

Страница 11: ...esponsible for compliance with all legal regulatory and safety related requirements concerning its products and any use of TI components in its applications notwithstanding any applications related information or support that may be provided by TI Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards which anticipate dangerous consequences of failur...

Страница 12: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments LM2745 19AEVAL ...

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