Texas Instruments manual TPS40051EVM-001 SLUP195 List of Materials

Page 15

SLUU161 – April, 2003

8 List of Materials

Table 1 lists the parts values of the evaluation board. These values can be modified to meet the application requirements.

Table 1. TPS40051EVM–001 (SLUP195) List of Materials

REFERENCE

QTY

DESCRIPTION

 

 

 

SIZE

MFR

PART NUMBER

DESIGNATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1, C4

2

Capacitor, ceramic, 470 pF, 50 V, X7R, 10%

 

 

805

Vishay

VJ0805Y471KXAAT

 

 

 

 

 

 

 

 

C12, C14

2

Capacitor, ceramic, 22 µ F, 16 V, X5R, 20%

 

 

1812

TDK

C4532X5R1C226MT

C15

1

Capacitor, ceramic, 47 µ F, 6.3 V, X5R, 20%

 

 

1812

TDK

C4532X5R0J476MT

C16, C17(1)

2

Capacitor, POSCAP, 470 µ F, 4 V, 10 mΩ , 20%

 

 

7343 (D)

Sanyo

4TPD470M

C2, C8, C10,

5

Capacitor, ceramic, 0.1 µ F, 25 V, X7R, 10%

 

 

805

Vishay

VJ0805Y104KXXAT

C11, C18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3

1

Capacitor, ceramic, 2.2 nF, 50 V, X7R, 10%

 

 

805

Vishay

VJ0805Y222KXAAT

 

 

 

 

 

 

 

 

C5

1

Capacitor, ceramic, 5.6 nF, 50 V, X7R, 10%

 

 

805

Vishay

VJ0805Y562KXAAT

 

 

 

 

 

 

 

 

C6,C13

2

Capacitor, ceramic, 4.7 nF, 50 V, X7R, 10%

 

 

805

Vishay

VJ0805Y472KXAAT

 

 

 

 

 

 

 

 

C7

1

Capacitor, ceramic, 100 pF, 50 V, NPO, 10%

 

 

805

Vishay

VJ0805A101KXAAT

 

 

 

 

 

 

 

 

C9

1

Capacitor, ceramic, 1 µ F, 16–V, X5R, 10%

 

 

805

TDK

C2012X5R1C105KT

 

 

 

 

 

 

 

 

D1

1

Diode, switching, 10 mA, 85 V, 350 mW

 

 

SOT23

Vishay–Liteon

BAS16

 

 

 

 

 

 

 

 

 

 

D2

1

Diode, schottky, 3 A, 40 V

 

 

 

 

SMC

IR

30BQ040

 

 

 

 

 

 

 

 

 

J1, J2

2

Terminal block, 4-pin, 15 A, 5.1 mm

 

 

 

0.80 x 0.35

OST

ED2227

 

 

 

 

 

 

 

 

 

L1(1)

1

Inductor, SMT, 1.7–µ H, 22.3 A, 1.8 mΩ

 

 

 

0.512 x 0.512

Coiltronics

HC1–1R7

Q1(1)

1

MOSFET, N–channel, V

30 V, R

6 mΩ , I

D

30 A

LFPAK

Hitachi

HAT2168H

 

 

DS

DS

 

 

 

 

 

Q2(1)

1

MOSFET, N–channel, V

30 V, R

4.2 mΩ , I 40 A

LFPAK

Hitachi

HAT2167H

 

 

DS

DS

 

D

 

 

 

R1

1

Resistor, chip, 1 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

R10

1

Resistor, chip, 3.3 Ω , 1/10–W, 5%

 

 

 

805

Std

Std

R11

1

Resistor, chip, 0 Ω , 1/10–W, yy%

 

 

 

805

Std

Std

R12

1

Resistor, chip, 20 Ω , 1/10–W, 5%

 

 

 

805

Std

Std

R2

1

Resistor, chip, 165 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

R3

1

Resistor, chip, 5.49 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R4

1

Resistor, chip, 243 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R5

1

Resistor, chip, 10 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R6

1

Resistor, chip, 71.5 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R7

1

Resistor, chip, 8.66 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R8

1

Resistor, chip, 226 Ω , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

R9

1

Resistor, chip, 16.2 kΩ , 1/10–W, 1%

 

 

 

805

Std

Std

 

 

 

 

 

 

 

 

 

 

TP1, TP4,

5

JACK, test point, red

 

 

 

 

 

Farnell

240–345

TP5, TP7, TP9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TP2, TP3,

4

JACK, test point, black

 

 

 

 

 

Farnell

240–333

TP6, TP10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TP8

1

Adaptor, 3.5 mm probe clip

 

 

 

 

0.2

Tektronix

131–4244–00 or

 

 

 

 

131–5031–00

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U1(1)

1

Wide input synchronous buck controller

 

 

PWP16

TI

TPS40051PWP

––

1

PCB, 2.85” x 2” x .062 In

 

 

 

 

 

Std

SLUP195

 

 

 

 

 

 

 

 

 

 

(1)Should not be substituted.

TPS40051-Based Design Converts 12-V Bus to 1.8 V at 15 A (SLUP195)

15

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Contents User’s Guide EVM Important Notice Dynamic Warnings and Restrictions Introduction FeaturesTPS40051EVM-001 SLUP195 Schematic Schematic+ R2 + f 17.82 10 *6 * 23 k Component SelectionTPS40051 Device Selection Frequency of OperationUvlo Circuitry Inductance ValueInput capacitor selection Mosfet selection Output Capacitor SelectionShort Circuit Protection Snubber Component SelectionCompensation Components Oscilloscope Probe Test Jacks Test SetupDC Input Source Output LoadEfficiency and Power Loss Test Results / Performance DataClosed Loop Performance Output Ripple and Transient Response EVM Assembly Drawing and PCB LayoutTop Side Copper Internal Layer 2 Copper TPS40051EVM-001 SLUP195 List of Materials List of MaterialsReferences Important Notice

TPS40051 specifications

Texas Instruments TPS40051 is a highly integrated, synchronous step-down (buck) switching regulator designed to deliver power efficiently and effectively to various applications. This device is particularly well-suited for powering FPGAs, DSPs, microcontrollers, and other digital devices that require a stable voltage supply with high efficiency.

One of the main features of the TPS40051 is its ability to operate from a wide input voltage range of 4.5V to 17V. This flexibility makes it suitable for a variety of power sources, including battery-operated systems and traditional AC/DC power supplies. The output voltage can be adjusted from 0.8V to 85% of the input voltage, making it adaptable to different load requirements and application scenarios.

The TPS40051 employs a constant frequency, voltage mode control scheme, which results in improved transient response and stability. The device operates with a fixed switching frequency that can be set between 100kHz and 1MHz, allowing designers to optimize their designs for efficiency or minimize electromagnetic interference (EMI). The low RDS(on) of the integrated MOSFETs reduces conduction losses, contributing to the overall high efficiency of the solution, often exceeding 90%.

In terms of protection features, the TPS40051 includes overcurrent protection, thermal shutdown, and under-voltage lockout, which enhance the reliability of the system. These features allow the device to maintain safe operating conditions in various scenarios, protecting both the regulator and the load.

Another significant characteristic of the TPS40051 is its ability to operate in a Power Good mode. This feature provides feedback to the system regarding the status of the output voltage, allowing for better system monitoring and control. Additionally, it has an adjustable soft-start feature, which helps prevent inrush current during power-up, further protecting sensitive loads.

The TPS40051’s compact package options and its integration of features make it a flexible choice for designers looking to implement efficient power management solutions. Whether used in industrial, automotive, or consumer electronics applications, the TPS40051’s robust performance and adaptability make it an excellent choice for modern power supply designs.
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