TPS65132WEVM-669

User's Guide SLVUAB3A – October 2014 – Revised February 2016 TPS65132W Evaluation Module This user's guide describes the characteristics, operation, and use of the TPS65132W evaluation module (EVM) and its software. It includes the EVM specifications, the recommended setup (hardware and software), the schematic diagram, the board layouts, and the bill of materials. All the measurements in the Application Performance section of the TPS65132W datasheet (SLVSBM1) were done with this EVM. 1 2 3 4 5 6 7 8 Contents Introduction ................................................................................................................... 2 Electrical Specifications ..................................................................................................... 3 Schematic ..................................................................................................................... 4 Connectors, Jumpers and Test Points .................................................................................... 5 Setup .......................................................................................................................... 6 Software Operation .......................................................................................................... 9 PCB Layout ................................................................................................................. 14 List of Materials ............................................................................................................. 16 List of Figures 1 Schematic ..................................................................................................................... 4 2 Hardware Setup – Full Functionality ...................................................................................... 6 3 Hardware Setup – Simplified ............................................................................................... 6 4 Two-Terminal Power Supply Connection ................................................................................. 7 5 Four-Terminal Power Supply Connection 6 7 8 9 10 11 12 13 14 15 16 17 ................................................................................ 7 Single-Ended Load Connections .......................................................................................... 7 Differential Load Connection ............................................................................................... 8 Ribbon Cable Connected to the Ten Middle Pins of the USB2ANY Interface Adapter............................. 8 Device Selection Window ................................................................................................... 9 Settings Window ............................................................................................................. 9 I2C Bus Internal Pullup Connection ...................................................................................... 10 I2C Bus External Pullup Connection ..................................................................................... 10 DAC Registers Window ................................................................................................... 12 Demo Mode Prompt with No EVM Connected ......................................................................... 13 Component Placement (Top View) ...................................................................................... 14 PCB Top Layer (Top View) ............................................................................................... 14 PCB Bottom Layer (Bottom View) ....................................................................................... 15 List of Tables 1 Electrical Specifications ..................................................................................................... 3 2 Connector Overview ......................................................................................................... 5 3 Jumper Overview ............................................................................................................ 5 4 Test Point Overview ......................................................................................................... 5 5 Bill of Materials ............................................................................................................. SLVUAB3A – October 2014 – Revised February 2016 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated TPS65132W Evaluation Module 16 1 Introduction 1 www.ti.com Introduction This EVM uses a TPS65132W to generate the positive and negative supply voltages needed by LCD panels in smartphones and tablet PCs. It can also be used as a general-purpose power supply in applications that need positive and negative supply rails (for example, op-amp or data acquisition circuits). For easy performance evaluation of the TPS65132W, this EVM has: • Software with a Graphical User Interface (GUI) for reading, writing, exporting, and importing the device configuration • A USB2ANY interface adapter to control the I2C bus • Test points for measuring the most important voltages • Jumpers for enabling and disabling the outputs • Input and output voltage sense terminals for making accurate four-terminal voltage measurements 1.1 Recommended Equipment In addition to the contents of the EVM box, some or all of the equipment described in the following subsections is required. 1.1.1 Power Supply To evaluate the full performance of the TPS65132W, a dc power supply capable of delivering 1.2 A from 2.5 V to 5.5 V is required. 1.1.2 Host Computer To change the output voltages or configuration of the TPS65132W, a personal computer (PC) with the following minimum specifications is needed: • Microsoft® Windows® 7 operating system • One free USB port • A minimum of 280MB of free hard disk space (610MB recommended) • A minimum of 512MB of RAM 1.1.3 Software You can download the latest version of the EVM software from the TI website at http://www.ti.com/product/tps65132 (see also Section 5.2). 1.2 Applications The TPS65132W device is suitable for use in any applications that need positive and negative output voltages in the range ±4 V to ±6 V and output currents less than ±80 mA. Typical applications include: • Smartphone displays • Tablet displays • Split-rail power supply applications Microsoft, Windows are registered trademarks of Microsoft Corporation. 2 TPS65132W Evaluation Module SLVUAB3A – October 2014 – Revised February 2016 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated Introduction www.ti.com 1.3 Features • • • • • • • • • • 2 Efficiency greater than 85% at IO > 10 mA Input voltage range of 2.5 V to 5.5 V Positive output voltage range of 4.0 V to 6.0 V (0.1-V steps) Negative output voltage range of –4.0 V to –6.0 V (0.1-V steps) Output voltage accuracy of better than 1% Programmable active discharge during shutdown Excellent line regulation Advanced power-save mode for light-load efficiency Thermal shutdown Two-layer PCB with all components on top side Electrical Specifications Table 1 gives an overview of the electrical specifications of the TPS65132W EVM. Table 1. Electrical Specifications Parameter Notes and Conditions MIN TYP MAX Unit Input Characteristics VIN Input voltage 2.5 Input current 5.5 VIN = 3.7 V, IPOS = INEG = 40 mA 680 VIN = 3.7 V, IPOS = INEG = 0 mA 0.1 1 5.4 5.45 V mA mA Output Characteristics VPOS Positive output voltage VIN = 3.7 V, IPOS = 40 mA 5.35 V ΔVPOS(ΔVIN) Line regulation (VPOS) VIN = 2.5 V to 5.5 V, IPOS = 40 mA 5 mV ΔVPOS(ΔIO) Load regulation (VPOS) IPOS = 10 mA to 40 mA, VI = 3.7 V –7 mV VNEG Default negative output voltage VIN = 3.7 V, INEG = 40 mA ΔVNEG(ΔVIN) Line regulation (VNEG) VIN = 2.5 V to 5.5 V, IO = 40 mA (1) ΔVNEG(ΔIO) Load regulation (VNEG) INEG = 10 mA to 40 mA, VIN = 3.7 V VPOS(PP) Output voltage ripple (VPOS) VIN = 3.7 V, IO = 40 mA (1) VNEG(PP) Output voltage ripple NEG VIN = 3.7 V, IO = 40 mA (1) –5.45 –5.4 –5.35 V 5 mV –12 mV 5 mV 40 mV 1.6 MHz System Characteristics Switching frequency Peak efficiency (1) VIN = 3.7 V 89% IO means that the load is connected from VPOS to VNEG. SLVUAB3A – October 2014 – Revised February 2016 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated TPS65132W Evaluation Module 3 Schematic 3 www.ti.com Schematic VIN Figure 1 is for reference only; see the bill of materials in Section 8 for specific values. J1 2.5V to.5.5V VIN GND L1 VIN 1 2 3 4 5 6 S+ S- TP1 1269AS-H-2R2 C1 4.7µF TP2 TP4 J2 PGND OUTP U1 J5 REG 1 2 3 4 REG GND 4 TP7 14 18 C3 10µF 5 6 PGND JP2 1 2 3 on ENP off 7 8 VIN 10 on ENN off C2 4.7µF AGND 1 2 3 SW SW REG REG OUTP OUTP ENP OUTN ENN AGND AGND PGND 13 JP1 VIN SDA SCL PGND PGND PGND PGND CFLY1 CFLY2 20 19 C4 4.7µF SW 1 2 3 4 5 6 VPOS GND 16 15 PGND 9 TP6 3 17 TP3 1 2 11 12 AGND J3 OUTN 1 2 3 4 5 6 C5 10µF PAD TPS65132W VNEG GND PGND VIN PGND TP5 NT1 J6 AGND J4 2 4 AGND 6 8 10 SDA AGND 1 2 3 4 5 6 Net-Tie 1 3 5 7 9 PGND AGND TP8 TP9 SCL N2510-6002-RB AGND Figure 1. Schematic 4 TPS65132W Evaluation Module SLVUAB3A – October 2014 – Revised February 2016 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated Connectors, Jumpers and Test Points www.ti.com 4 Connectors, Jumpers and Test Points Table 2, Table 3, and Table 4 give an overview of the connector, jumper, and test point connections of the EVM. Table 2. Connector Overview Connector J1 J2 J3 J4 Input Supply Positive Output Negative Output I2C Bus J5 Boost Output J6 Ground Signal Pin Description VIN 1, 2 Input Supply S+ 3 Input Supply Sense S– 4 Ground Sense PGND 5, 6 Ground OUTP 1, 2 Positive Output S+ 3 Positive Output Sense S– 4 Ground Sense PGND 5, 6 Ground VNEG 1, 2 Negative Output Negative Output Sense S– 3 S+ 4 PGND 5, 6 Ground SCL 9 Clock SDA 10 Data Remarks Connect a 2.5-V to 5.5-V dc power supply to J1. Use two-terminal (Figure 4) or fourterminal (Figure 5) connections. To minimize parasitic inductance, use a short (