TPS61030EVM-208

User's Guide SLVU080B – January 2003 – Revised September 2016 TPS6103x EVM-208 For High Efficient Output Current Boost Converter 1 2 3 Contents Introduction ................................................................................................................... Setting Up the EVMs ........................................................................................................ 2.1 Introduction—Evaluation with the TPS6103x EVM ............................................................. 2.2 Enable (EN) Jumper ................................................................................................ 2.3 Power Save Mode Enable and Synchronization (SYNC) Jumper ............................................ 2.4 LBI/LBO Comparator ............................................................................................... Bill of Materials, PCB Layout, and Schematic ........................................................................... 3.1 Bill of Materials ...................................................................................................... 3.2 PCB Layout .......................................................................................................... 3.3 Schematic ............................................................................................................ 1 2 2 2 2 2 3 3 3 5 List of Figures 1 Component Placement ...................................................................................................... 4 2 PCB Top Layer ............................................................................................................... 4 3 PCB Bottom Layer ........................................................................................................... 5 4 TPS6103x EVM Circuit Diagram........................................................................................... 5 List of Tables 1 1 EVMs You Can Order ....................................................................................................... 1 2 TPS6103x EVM Bill of Materials ........................................................................................... 3 Introduction The Texas Instruments TPS61030, TPS61031, and TPS61032 evaluation modules (EVM) for highefficiency boost converters help designers evaluate the different operating modes and the performance of the device. See Table 1 for the various EVMs available in this family. If any other output voltage configuration is to be evaluated, the TPS61030 adjustable output voltage version can be set up to provide an output voltage between 2.5 V and 5.5 V at the output of the boost converter. Only the appropriate feedback resistor divider has to be adjusted. Also, other fixed output voltage device versions can be easily evaluated using the EVM. Refer to the SLUS534 data sheet for the fixed output voltage options available in the TPS6103x device family. The TPS6103x has an input voltage range between 1.8 V and 5.5 V. For proper operation the maximum input voltage should not exceed the output voltage. Table 1. EVMs You Can Order EVM Number Description TPS61030EVM-208 Adjustable boost output voltage, set to 5 V TPS61031EVM-208 Boost output voltage fixed at 3.3 V TPS61032EVM-208 Boost output voltage fixed at 5 V SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback TPS6103x EVM-208 For High Efficient Output Current Boost Converter Copyright © 2003–2016, Texas Instruments Incorporated 1 Setting Up the EVMs 2 www.ti.com Setting Up the EVMs It is important to establish all connections for the EVM before power is applied to the EVM. ❏ Connect a power supply (1.8 V to VOUT, depending on the output voltage of the EVM) to the INPUT header. ❏ Connect a voltmeter to the OUTPUT header. ❏ Verify that all jumpers are set to the correct value (EN, SYNC). Default value for EN for VBAT and SYNC for GND. ❏ Turn on the power supply and verify the output voltage is within limits described in the EVM Warnings and Restrictions section. It is important to operate this EVM within the input voltage range of 1.8 V to 5.0 V and the output voltage range of 2.5 V to 5.5 V at the dc-dc output. 2.1 Introduction—Evaluation with the TPS6103x EVM This section details the evaluation process and features of the EVM. For detailed evaluation, a load must be connected to the output terminal in order to adjust the load current between 0 mA and 1600 mA. CAUTION For accurate output voltage and input voltage measurements, it is important to measure the voltage on the input and output voltage terminals with Kelvin contacts or with a voltmeter connected directly to the input voltage or output voltage terminals. This eliminates any measurement errors related to voltage drops along the input and output terminal wires connected to the power supply or load. 2.2 Enable (EN) Jumper This jumper is used to enable the device. Connecting the enable pin (EN) to VBAT enables the part. The device is disabled when EN is set to GND. For more details about the Enable Jumper, refer to the SLUS534 data sheet. 2.3 Power Save Mode Enable and Synchronization (SYNC) Jumper This jumper enables the device to enter into power save mode at light load, when it is set to GND. The device automatically stops switching when the output voltage reached its upper threshold, and starts switching again, when the lower threshold of the output voltage is reached. When disabling the power save function by setting the jumper to VBAT, the device stays operating in fixed frequency mode, regardless of the load current value. In this mode, however reverse current flows back to the input during light load operation, increasing power losses. The operating frequency stays constant, which implies low output voltage ripple. To synchronize the operating frequency to an external frequency, a clock signal can be applied to the SYNC pin. The device then operates at the applied operating frequency, with no Power Save Mode. For more details about the applied frequency and synchronization frequency range, refer to the SLUS534 data sheet. 2.4 LBI/LBO Comparator The LBO terminal is an open drain output and has a pullup resistor, R6, connected to the output. The signal on this pins goes low as soon as the input voltage at LBI falls below the threshold of 500 mV. Refer to the more detailed description in the SLUS534 data sheet. The LBO output stays at high-impedance when the input voltage at LBI is above the appropriate threshold. A resistor divider (R1, R2) is used on the EVM to monitor the supply voltage. More details about setting the low battery threshold voltage can be found in the SLUS534 data sheet. 2 TPS6103x EVM-208 For High Efficient Output Current Boost Converter SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback Copyright © 2003–2016, Texas Instruments Incorporated Bill of Materials, PCB Layout, and Schematic www.ti.com 3 Bill of Materials, PCB Layout, and Schematic Section contents: • Section 3.1 Bill of Materials • Section 3.2 PCB Layout • Section 3.3 Schematic 3.1 Bill of Materials The TPS6103x EVM Bill of Materials is shown in Table 2 with adjustable and fixed output voltage versions. More details about the design and component selection for the dc-dc converter can be found in the SLUS534 data sheet. Table 2. TPS6103x EVM Bill of Materials Reference Description Manufacturer Comments C3, C4 100 μF 10 V, Low ESR tantalum size D Vishay 594D–107X0016C2T or 594D–107X0010C2T C1 10 μF X5R 6.3 V, capacitor SMD1206 TDK C3216X5R0J106M C2 2.2 μF X5R 10 V, capacitor SMD0805 TDK C2012X5R1A225M L1 6.8 μH, CDRH124-6R8 Sumida SUMIDA CDRH104R–7R0, CDRH104R–100, or R4 200 kΩ,1%, resistor SMD0805 TPS61030EVM, not used on the fixed output voltage versions R3 1.8 MΩ,1%, resistor SMD0805 TPS61030EVM, not used on the fixed output voltage versions R6 1 MΩ, 1%, resistor SMD0805 R1 560 kΩ, 1%, resistor SMD0805 R2 180 kΩ, 1%, resistor SMD0805 J1, J2 Header 1×4, 0.1" pitch J6, J7 Header 1×2, 0.1" pitch J5 Header 1×3, 0.1" pitch J4 Header 1×3, 0.1" pitch U1 TPS61030PW, TSSOP16 PowerPAD EPCOS B82464–G4682-M 3.2 With jumper set to VBAT With jumper set to GND TI TPS61030EVM–208 TPS61031PW, TSSOP16 PowerPAD TPS61031EVM–208 TPS61032PW, TSSOP16 PowerPAD TPS61032EVM–208 PCB Layout For all switch mode power supplies the PCB layout is a critical step in the power supply design process. Figure 1, Figure 2, Figure 3, and Figure 4 show the layout for the adjustable and fixed output voltage EVMs. Please refer to the SLUS534 data sheet for further layout guidelines. The required board area for the complete dc-to-dc converter solution takes up less than 494 mm2 (19 mm × 26 mm) on a double-sided PCB, as it is indicated by the Figure 1 component placement. SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback TPS6103x EVM-208 For High Efficient Output Current Boost Converter Copyright © 2003–2016, Texas Instruments Incorporated 3 Bill of Materials, PCB Layout, and Schematic www.ti.com Figure 1. Component Placement Figure 2. PCB Top Layer 4 TPS6103x EVM-208 For High Efficient Output Current Boost Converter SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback Copyright © 2003–2016, Texas Instruments Incorporated Bill of Materials, PCB Layout, and Schematic www.ti.com Figure 3. PCB Bottom Layer 3.3 Schematic Figure 4. TPS6103x EVM Circuit Diagram SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback TPS6103x EVM-208 For High Efficient Output Current Boost Converter Copyright © 2003–2016, Texas Instruments Incorporated 5 Revision History www.ti.com Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from A Revision (October 2007) to B Revision ............................................................................................... Page • 6 Deleted 1000 mA maximum output current statement in Introduction.............................................................. 1 Revision History SLVU080B – January 2003 – Revised September 2016 Submit Documentation Feedback Copyright © 2003–2016, Texas Instruments Incorporated STANDARD TERMS AND CONDITIONS FOR EVALUATION MODULES 1. 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