TPS6101xEVMĆ157 EVM User's Guide for HighĆEfficiency, Boost Converters User’s Guide October 2000 Power Management Products SLVU040
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Preface About This Manual This user’s guide describes the TPS6101xEVM-157 (SLVP157) evaluation module for high-efficiency boost converters. How to Use This Manual - Chapter 1 Introduction Chapter 2 Evaluation With the TPS6101xEVM-157 Chapter 3 Printed Circuit Board (PCB) Layout Information About Cautions and Warnings This book may contain cautions and warnings. This is an example of a caution statement. A caution statement describes a situation that could potentially damage your software or equipment.
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Running Title—Attribute Reference Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.1 SLVP157 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 SLVP157 EVMs Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 SLVP157 Bill of Materials . . . . . . . . . . . . .
Running Title—Attribute Reference Figures 1–1 3–1 3–2 3–3 SLVP157 EVM Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Component Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Bottom Layer . . . . . . . . . . . . . . . . . . . .
Chapter 1 Introduction The Texas Instruments TPS61010 to TPS61016 evaluation modules (EVM) helps designers evaluate the different operating modes and the performance of high-efficiency boost converters. Refer to Table 1–1 for the various EVMs available in this family. If any other output voltage is to be evaluated, the TPS61010 adjustable version can be set up to provide an output voltage between 1.5 V and 3.3 V. Only the feedback resistor divider has to be adjusted.
SLVP157 EVM Schematic 1.1 SLVP157 EVM Schematic Figure1–1 shows the SLVP157 EVM schematic diagram. Figure 1–1. SLVP157 EVM Schematic Diagram L1 SW INPUT C1 VBAT R5 LBI VOUT LBO R4 J1 EN GND TPS6101x J2 C4 C5 OUTPUT LBO FB R1 ADEN COMP R6 R2 R3 C2 C3 GND 1.2 SLVP157 EVMs Available Table 1–1 lists the various EVMs available in the TPS6101xEVM-157 family. Table 1–1. SLVP157 Orderable EVMs 1-2 EVM Number Description TPS61010EVM-157 Adjustable output voltage, set to 3.
SLVP157 Bill of Materials 1.3 SLVP157 Bill of Materials Table 1–2 lists materials required for the SLVP157 EVM. More details about the design and component selection for the dc-dc converter can be found in the data sheet (SLVS314). Table 1–2. SLVP157 EVM Bill of Materials Ref Des Qty Part Number Description MFG C1 1 Capacitor, 10 µF, X5R, 6.
Setup of the EVMs 1.4 Setup of the EVMs It is important to establish all connections to the EVM before the power supply connected to the EVM is turned on. 1) Connect a power supply (0.9 V to VO, depending on the output voltage of the EVM) to the INPUT header. 2) Connect a voltmeter to the OUTPUT header. 3) Verify that the jumper, J1, is set to EN. 4) Verify that the jumper, J2, is set to TBD. 5) Turn on the power supply and verify the output voltage.
Chapter 2 Evaluation With the TPS6101xEVM-157 This chapter details the evaluation process and features of the EVM. For this evaluation, a load is connected to the output terminal in order to adjust the load current between 0 mA and 250 mA. 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.
Enable (EN) Jumper 2.1 Enable (EN) Jumper This jumper is used to enable the device. Connecting the EN pin to VBAT (i.e. setting jumper to EN) will enable the part. 2.2 Auto Discharge Enable (ADEN) Jumper This jumper enables the device to discharge the output capacitor after the device is disabled by setting EN to GND. If ADEN is connected to VBAT (jumper set to ADEN), the capacitors connected to VOUT will be discharged by an internal switch with a resistance of 300 Ω.
Chapter 3 PCB Layout Just as for all switch mode power supplies, the PCB layout is a critical step in the power supply design process. The following figures show the layout for the adjustable and fixed output voltage EVMs. Refer to the data sheet (SLVS314) for further layout guidelines. The required board area for the complete dc-dc converter solution is less than 418 mm2 (19 mm x 21 mm) on a double-sided PCB, as indicated by the rectangle on the component placement figure. Topic 3.
PCB Layout of the TPS6101xEVM-157 (SLVP157) 3.1 PCB Layout of the TPS6101xEVM-157 (SLVP157) Figure 3–1. Component Placement Figure 3–2.
PCB Layout of the TPS6101xEVM-157 (SLVP157) Figure 3–3.
3-4 PCB Layout
