User’s Guide July 2004 PMP Systems Power SLVU113
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.
EVM IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION PURPOSES ONLY and is not considered by TI to be fit for commercial use.
EVM WARNINGS AND RESTRICTIONS It is important to operate this EVM within the input voltage range of 1.6 V and 3.6 V and the output voltage range of 1.6 V and 3.6 V. Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there are questions concerning the input range, please contact a TI field representative prior to connecting the input power.
Related Documentation From Texas Instruments Preface About This Manual This user’s guide describes the TPS2231 HPA074 evaluation module (EVM). This guide contains the EVM schematic, bill of materials, assembly drawing and top and bottom board layouts.
Contents the user at his own expense will be required to take whatever measures may be required to correct this interference.
Contents 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 2 Hardware Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 3 EVM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 Setup . . . . . . . . . . . . . .
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Chapter 1 This User’s Guide describes the setup and operation of the TPS2231 evaluation module (EVM) HPA074. Information and instruction presented throughout this document assumes user familiarity with the data sheet of the TPS2231 ExpressCard power-interface switch.
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Chapter 2 The HPA074 EVM features the TPS2231 made by Texas Instruments Incorporated. The EVM has been designed to be simple and straight-forward for users to evaluate the TPS2231 device with all the necessary external components and test points. An ExpressCard compliant socket is installed for insertion of an ExpressCard card.
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Chapter 3 This chapter describes the setup and configuration of the TPS2231 EVM. Topic Page 3.1 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.2 Slide Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.3 Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2 3.4 Features . . . . . . . .
Setup 3.1 Setup The HPA074 EVM is designed to allow evaluation of the TPS2231 device. Test points and slide switches are provided to facilitate various tests and configurations. 3.2 Slide Switches On the HPA074 EVM, 6 slide switches (S1 through S6) are provided to set the logic levels on the TPS2231 logic inputs. When the handle of a switch is placed on position 1, the respective TPS2231 input will be pulled up to the AUXIN for S1 to S5 or Hi-Z for S6.
Features 3.4 Features In order to easily evaluate the TPS2231 PD controller, the EVM features are described in this section. 3.4.1 Input and Output Capacitors The input capacitances of the TPS2231 voltage inputs are recommended to be at least 4.7 µF. The output capacitances are at least 0.1 µF but greater output capacitance will improve system performance during transients. The ExpressCard specifications defines the total host and card capacitance to be less than 100 µF. The EVM has one 0.
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Chapter 4 This chapter contains the bill of materials for the TPS2231EVM. Topic 4.1 Page Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bill of Materials 4.1 Bill of Materials COUNT 3 RefDes C1, C2, C3 Description Capacitor, ceramic, 4.7−µF, 10−V, X7R, 10% Value 4.7 µF Size 1206 Part Number STD MFR Taiyo Yuden 6 C4, C5, C6, C7, C9, C11 Capacitor, ceramic, 0.1−µF, 16−V, X7R, 10% 0.
Chapter 5 ! " # This chapter contains the schematic and layout for the TPS2231EVM. Topic Page 5.1 Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 5.2 Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Schematic 5.1 Schematic Figure 5−1.
Layout 5.2 Layout Figure 5−2. Top Assembly Layer Figure 5−3.
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