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User's Guide

SLVU324–March 2010

TPS65720EVM

The TPS65720EVM-515 evaluation module is a fully assembled and tested circuit for evaluating the

TPS65720 two-channel power management integrated circuit..

Contents

1 Introduction .................................................................................................................. 2

1.1 Requirements ....................................................................................................... 2

1.2 1.2 Applications .................................................................................................... 2

1.3 Features ............................................................................................................. 2

2 TPS65720EVM Electrical Performance Specifications ................................................................ 3

3 TPS65720EVM Schematic ................................................................................................ 4

4 Connector and Test Point Descriptions .................................................................................. 5

4.1 Enable Jumpers/Switches ........................................................................................ 5

5 Setup ......................................................................................................................... 7

5.1 Software Setup ..................................................................................................... 7

5.2 Hardware Setup .................................................................................................... 7

5.3 Running the Software ............................................................................................. 7

6 TPS65720EVM Assembly Drawings and Layout ...................................................................... 13

7 Bill of Materials ............................................................................................................. 16

List of Figures

1 TPS65720EVM Schematic ................................................................................................ 4

2 Hardware Board Connection .............................................................................................. 7

3 Starting the Software ....................................................................................................... 8

4 Software Charger View..................................................................................................... 9

5 Software DCDC1/LDO1 View............................................................................................ 10

6 GPIO View.................................................................................................................. 11

7 INTERRUPTS VIEW ...................................................................................................... 12

8 TPS65720EVM Component Placement (Viewed From Top) ........................................................ 13

9 TPS65720EVM Top Copper (Viewed From Top) ..................................................................... 13

10 TPS65720EVM Bottom Copper (X-Ray View )........................................................................ 14

11 TPS65720EVM Internal 1 (X-Ray View From Top) ................................................................... 14

12 TPS65720VM Internal 2 (X-Ray View From Top)..................................................................... 15

List of Tables

1 TPS65720EVM Electrical and Performance Specifications ........................................................... 3

2 HPA515B Bill of Materials ................................................................................................ 16

SLVU324–March 2010 TPS65720EVM

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Summary of content (18 pages)

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User's Guide SLVU324 – March 2010 TPS65720EVM The TPS65720EVM-515 evaluation module is a fully assembled and tested circuit for evaluating the TPS65720 two-channel power management integrated circuit.. 1 2 3 4 5 6 7 Contents Introduction .................................................................................................................. 2 1.1 Requirements ....................................................................................................... 2 1.2 1.2 Applications .......
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Introduction 1 Introduction 1.1 Requirements www.ti.com In order to operate this evaluation module (EVM), the following components must be connected and properly configured. All components and connectors are supplied in the EVM except for the host computer and the DC power supply. Software must be downloaded from the TI Web site at www.ti.com. 1.1.1 Software To download the software that is necessary to operate the TPS65720EVM, check the TPS65720 product folder on the TI Web site. 1.1.
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TPS65720EVM Electrical Performance Specifications www.ti.com 2 TPS65720EVM Electrical Performance Specifications Table 1. TPS65720EVM Electrical and Performance Specifications Parameter Symbol Notes and Conditions Min Typ Max Unit Input Characteristics Input Voltage AC VAC 4.35 28 V Input Voltage DCDC1 VIN_DCDC1 2.1 5.6 V Input Voltage LDO1 VIN_LDO1 1.8 6.
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TPS65720EVM Schematic 3 www.ti.com TPS65720EVM Schematic For Reference Only, See Table 2 for specific values. Figure 1.
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Connector and Test Point Descriptions www.ti.com 4 Connector and Test Point Descriptions 4.1 Enable Jumpers/Switches 4.1.1 J1 – VIN This header is the positive connection to the input power supply. The power supply must be connected between J1 and J2 (GND). The leads to the input supply must be twisted and kept as short as possible. The input voltage has to be between 4.35 V and 6 V. 4.1.2 J2 – GND This header is the return connection to the input power supply.
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Connector and Test Point Descriptions 4.1.11 www.ti.com J11 /INT / RESET / GND J11 pin 1 is connected to the open-drain output /INT. J11 pin 2 is connected to the open-drain output RESET. All open-drain outputs are pulled up with a resistor to the pullup voltage PULLUP. Pullup is connected to VLDO1 with R10 on the EVM. Pullup also can be connected to VIN and VDCDC1 with the resistors R20 and R21. J13 pin 3 is connected to GND. 4.1.
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Setup www.ti.com 5 Setup 5.1 Software Setup To download the software, go the TPS65720 product folder on the TI Web site (www.ti.com). Download the software, and execute it to install the software. 5.2 Hardware Setup Host Computer USB to GPIO Interface TS TPS65720EVM-515 + J3 J13 Lithium Ion Battery J1 + J2 - DC Power Supply Figure 2. Hardware Board Connection 5.3 Running the Software Click on the TPS65720_1EVM icon to start the software.
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Setup www.ti.com Figure 3. Starting the Software Once the used device is selected, the software starts up (see Figure 4). By clicking on the Tabs CHARGER , DCDC1/LDO1, GPIO, and INTERRUPTS, the user can navigate through the different Views The window that first appears allows control of all charger settings and shows all the charger status Flags.
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Setup www.ti.com Figure 4. Software Charger View The DCDC1/LDO1 control window (see Figure 5) allows control of operating mode (PWM/PFM) for the DC/DC converter, output voltage of LDO1 (TPS65720 only) and shows the Status Flags related to DCDC1 and LDO1. In the lower right corner of the window, all DCDC1/LDO1-related User Registers are displayed. See the TPS65720 data sheet for detailed description on these registers.
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Setup www.ti.com Figure 5. Software DCDC1/LDO1 View The GPIO control window (see Figure 6) allows control of the fours GPIOs of the TPS65720/1. The GPIOs can be configured as input or output. In addition, GPIO2 and GPIO3 can be configured as current sink to drive an external LED. In the lower right corner of the window, all GPIO-related User Registers are displayed. See the TPS65720 data sheet for detailed description on these registers.
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Setup www.ti.com Figure 6. GPIO View The INTERRUPT control window allows the user to configure and mask interrupts. In the default setup, all interrupts are masked. If an event is masked, it is ignored and no interrupt is generated. If an event is not masked, an interrupt is generated based on that event. If any interrupt is pending, the INT pin is driven low. In the lower right corner of the window, all INTERRUPT-related User Registers are displayed.
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Setup www.ti.com Figure 7.
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TPS65720EVM Assembly Drawings and Layout www.ti.com 6 TPS65720EVM Assembly Drawings and Layout The following figures (Figure 8 through Figure 12) show the design of the TPS65720EVM printed-circuit board. TEXAS INSTRUMENTS Figure 8. TPS65720EVM Component Placement (Viewed From Top) Figure 9.
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TPS65720EVM Assembly Drawings and Layout www.ti.com Figure 10. TPS65720EVM Bottom Copper (X-Ray View ) Figure 11.
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TPS65720EVM Assembly Drawings and Layout www.ti.com Figure 12.
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Bill of Materials 7 www.ti.com Bill of Materials Table 2. HPA515B Bill of Materials Count RefDes Value Description Size Part Number MFR 0 C1 open Capacitor, Ceramic, 35V, X5R, 10% 0603 GMK107BJ105K Taiyo Yuden 1 C10 2.2µF Capacitor, Ceramic, 6.3V, X5R, 10% 0805 GRM155R60J22ME15D Murata 1 C11 22µF Capacitor, Ceramic, 50V, COG, 5% 0603 GRM1885C1H220JA01D Murata 1 C2 1µF Capacitor, Ceramic, 35V, X5R, 10% 0603 GMK107BJ105K Taiyo Yuden 1 C3 1µF Capacitor, Ceramic, 6.
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Evaluation Board/Kit Important Notice Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. Persons handling the product(s) must have electronics training and observe good engineering practice standards.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.