SLVUBX2B August   2020  – May 2021

 

  1.   Trademarks
  2. 1Introduction
    1. 1.1 Performance Specification
    2. 1.2 Modifications
      1. 1.2.1 Input and Output Capacitors
      2. 1.2.2 Configurable Enable Threshold Voltage
      3. 1.2.3 NR/SS Capacitor
      4. 1.2.4 Feedforward Capacitor
      5. 1.2.5 S-CONF Resistor
      6. 1.2.6 Loop Response Measurement
      7. 1.2.7 Single LC Filter Operation
  3. 2Setup
    1. 2.1 Input/Output Connector Descriptions
    2. 2.2 Ripple Measurement Setup
  4. 3 Test Results
  5. 4 Board Layout
  6. 5Schematic and Bill of Materials
    1. 5.1 Schematic
  7. 6Bill of Materials
  8.   A Ripple Measurements With Mis-oriented Inductor
  9.   Revision History

6 Bill of Materials

Table 6-1 lists the BOM for this EVM.

Table 6-1 TPS6291xEVM-077 Bill of Materials

-002

-003

Reference Designator

Value

Description

Package

Part Number

Manufacturer

1

1

C1

2200pF

CAP, CERM, 2200 pF, 50 V, +/- 10%, X7R

0402

GRM155R71H222KA01D

muRata

2

2

C2, C3

10µF

CAP, CERM, 10µF, 25 V, +/- 10%, X7S

0805

C2012X7S1E106K125AC

TDK

5

5

C4, C5, C6, C7, C8

22µF

CAP, CERM, 22 µF, 10 V, +/- 20%, X7S

0805

C2012X7S1A226M125AC

TDK

1

1

C9

0.47µF

CAP, CERM, 0.47 µF, 25 V, +/- 10%, X7R

0603

C1608X7R1E474K080AE

TDK

1

1

C10

47µF

CAP, TA, 47 µF, 35 V, +/- 10%, 0.3 Ω

7343-43

T495X476K035ATE300

Kemet

2

2

C11, C12

470pF

CAP, CERM, 470 pF, 50 V, +/- 5%, C0G/NP0

0402

GRM1555C1H471JA01D

muRata

1

1

FB1

Ferrite bead, 8.5-Ω at 100 MHz, 4mΩ DCR, 8A

0603

BLE18PS080SN1

muRata

1

1

L1

2.2µH

Inductor Power Shielded Wirewound 2.2µH 20% Composite 8.7A 13.5mΩ DCR

4 x 4 mm

XGL4030-222MEC

Coilcraft

0

1

R1

2.43kΩ

RES, 2.43 kΩ, 1%, 0.1 W

0603

Std

Std

1

0

R1

15.4kΩ

RES, 15.4 kΩ, 1%, 0.1 W

0603

Std

Std

1

1

R2

4.87kΩ

RES, 4.87 kΩ, 1%, 0.1 W

0603

Std

Std

1

1

R3

10.0kΩ

RES, 10.0 kΩ, 1%, 0.1 W

0603

Std

Std

1

0

R4

27.4kΩ

RES, 27.4 kΩ, 1%, 0.1 W

0603

Std

Std

0

1

R4

52.3kΩ

RES, 52.3 kΩ, 1%, 0.1 W

0603

Std

Std

1

0

U1

TPS629121

3V to 17V, 2A Low Noise (20 µVRMS) and Low Ripple (200 µVPP) buck converter

2 x 2 mm

TPS62912RPUR

Texas Instruments

0

1

U1

TPS629131

3V to 17V, 3A Low Noise (20 µVRMS) and Low Ripple (200 µVPP) buck converter

2 x 2 mm

TPS62913RPUR

Texas Instruments

  1. The TPS6291xEVM-077 may be populated with TPS6291x (U1) devices that do not contain the correct top-side markings on the top of the device itself. These devices are still fully-tested TPS6291x devices.