Texas Instruments TPS63806EVM User manual

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TPS63806EVM
User's Guide
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TPS63806EVM
This user’s guide describes the operation, and use of the TPS63806EVM evaluation module (EVM). The
TPS63806EVM is designed to help the users easily evaluate and test the operation and functionality of the
TPS63806 buck-boost converter. The TPS63806EVM has the output voltage set to 3.3 V. The EVM
operates from 1.3 V to 5.5 V input voltage. Output current can go up to 2 A in buck mode and boost mode.
This document includes setup instructions for the hardware, a schematic diagram, a bill of materials
(BOM), and printed-circuit board (PCB) layout drawings for the evaluation module. Throughout this
document, the abbreviations EVM, TPS63806EVM, and the term evaluation module are synonymous with
the TPS63806, unless otherwise noted.
Figure 1. TPS63806 EVM Picture
Trademarks
All trademarks are the property of their respective owners.

Introduction www.ti.com
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1 Introduction
The Texas Instruments TPS63806 is a highly efficient, single-inductor, internally compensated, buck-boost
converter in a 15-pin, 2.3-mm × 1.4-mm BGA package.
1.1 Background
The TPS63806EVM uses the TPS63806 integrated circuit (IC) and is set to a 3.3 V output and operates
with an input voltage between 1.3 V and 5.5 V.
1.2 Performance Specification
Table 1 provides a summary of the TPS63806EVM performance specifications. All specifications are given
for an ambient temperature of 25°C.
Table 1. Performance Specification Summary
Specification Test Conditions Min Typ Max Unit
Input voltage 1.3 5.5 V
Start-up input voltage 1.8 5.5 V
Output voltage 1.8 5.2 V
Output current VI≥2.2 V , VO= 3.3 V 0 2 A
1.3 Modifications
The printed-circuit board (PCB) for this EVM is designed to accommodate the TPS63806. Extra positions
are available for additional input and output capacitor and feed forward capacitor.
1.3.1 IC U1 Operation
U1 is configured for evaluation of the adjustable-output version. This EVM is set to 3.3 V. Resistors R1
and R2 can be used to set the output voltage between 1.8 V and 5.0 V. See the datasheet for
recommended values.

www.ti.com Setup
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2 Setup
This section describes how to properly use the TPS63806EVM.
2.1 Input/Output Connector and Header Descriptions
2.1.1 J1, Pin 1 and 2 – VIN
Positive input connection from the input supply for the EVM.
2.1.2 J1, Pin 3 and 4 – S+/S-
Input voltage sense connections. Measure the input voltage at this point.
2.1.3 J1, Pin 5 and 6 – GND
Vin GND return connection from the input supply for the EVM, common with J2, pin 5 and 6.
2.1.4 J2, Pin 1 and 2 – VOUT
Output voltage connection.
2.1.5 J2, Pin 3 and 4 – S+/S-
Vout Sense and GND Sense low-current sense lines for sampling the output voltage at the output
capacitor.
2.1.6 J2, Pin 5 and 6 – GND
Vout GND return connection for the output voltage, common with J1 pin 5 and 6.
2.1.7 J3 – PG GND
Power Good (PG) test point and GND connection.
2.1.8 JP1 – MODE
Shorting jumper between the center pin MODE and PFM enables automatic transition to power-saving
mode at light-load currents as described in the data sheet; shorting jumper between the center pin MODE
and PWM enables forced PWM mode.
2.1.9 JP2 – ENABLE
Shorting jumper between the center pin EN and ON turns on the unit. Shorting jumper between the center
pin EN and OFF turns the unit off.
2.2 Setup
To operate the EVM, connect an input supply with the positive lead to J1, pins 1 and 2 and negative lead
to J1, pins 5 and 6; connect a load with the positive lead to J2, pins 1 and 2 and the negative lead to J2,
pins 5 and 6; short EN and ON (pins 2 and 3) of JP2 with a shorting jumper.

Board Layout www.ti.com
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3 Board Layout
This section provides the TPS63806EVM board layout and illustrations.
3.1 Layout
Figure 2 through Figure 6 show the board layout for the TPS63806EVM PCB.
Figure 2. Assembly Layer

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Figure 3. Top Layer Routing

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Figure 4. Signal layer 1

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Figure 5. Signal Layer 2

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Figure 6. Bottom Layer Routing

www.ti.com Schematic and Bill of Materials
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4 Schematic and Bill of Materials
This section provides the TPS63806EVM schematic and bill of materials.
4.1 Schematic
Figure 7. Schematic

Schematic and Bill of Materials www.ti.com
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4.2 Bill of Materials
Table 2. TPS63806EVM Bill of Materials
Count RefDes Value Description Size Part Number MFR
1 C1 10 µF CAP, CERM, 10 µF, 6.3 V, +/- 20%, X5R, 0603 603 GRM188R60J106ME84 Murata
1 C5 150 µF CAP, TA, 150 µF, 10 V, +/- 20%, 0.005ohm 7343-31 T530D157M010ATE005 Kemet
2 C6, C7 47 uF CAP, CERM, 47 uF, 6.3 V, +/- 20%, X5R, 0603 603 GRM188R60J476ME15D Murata
1 L1 470 nH Inductor, Shielded, Composite, 470 nH, 3.5 A,
7.6 mOhm 4x4x1.5mm XFL4015-471MEC Coilcraft
1 R1 511 k RES, 511 k, 1%, 0.1 W, 0603 603 Std Std
1 R2 91.0 k RES, 91.0 k, 1%, 0.1 W, 0603 603 Std Std
1 R5 100 k RES, 100 k, 1%, 0.1 W, 0603 603 Std Std
2 R4, R6 1 M RES, 1.00 M, 1%, 0.1 W, AEC-Q200 Grade 0,
0603 603 Std Std
1 U1 - IC, Single Inductor Buck-Boost Converter 2.3x1.4x0.625mm TPS63806YFF TI