TPS22914CEVM-078

User's Guide SLVUA84A – June 2014 – Revised August 2014 TPS22914/15EVM-078 2A Load Switch IC The TPS22914/15EVM-078 evaluation module (EVM) allows the user to connect power to and control the 4-pin YFP package load switch. Parameters such as the On-Resistance, rise time and output pull-down resistance can be easily evaluated. Table 1 lists a short description of the TPS22914/15 load switch performance specifications; for additional details on load switch performance, application notes, and the datasheet see www.ti.com/loadswitch. Table 1. TPS22914/15 Rise Time, Output Current Rating, Enable, and Output Discharge Characteristics 1 2 3 4 5 6 7 EVM Device Rise Time Typical VIN (V) Maximum Continuous Current Enable (ON Pin) Quick Output Discharge HVL078-001 TPS22915B 60μs 3.3 2A Active High Yes HVL078-002 TPS22914B 60μs 3.3 2A Active High No HVL078-003 TPS22915C 1000μs 3.3 2A Active High Yes HVL078-004 TPS22914C 1000μs 3.3 2A Active HIgh No Contents Introduction ................................................................................................................... 1.1 Description ........................................................................................................... 1.2 Features .............................................................................................................. Electrical Performance ...................................................................................................... Schematic ..................................................................................................................... Layout ......................................................................................................................... 4.1 Setup ................................................................................................................. Operation ..................................................................................................................... Test Configurations .......................................................................................................... 6.1 On-Resistance (RON) Test Setup ................................................................................ 6.2 Slew Rate Test Setup .............................................................................................. 6.3 VOUT Slew Rate Example ........................................................................................ Bill of Materials (BOM) ...................................................................................................... 2 2 2 2 2 3 4 5 6 6 7 8 9 List of Figures 1 2 3 4 5 6 7 ....................................................................................... TPS22914/15EVM-078 Top Assembly.................................................................................... TPS22914/15EVM-078 Top Layout ...................................................................................... TPS22914/15EVM-078 Bottom Layout ................................................................................... RON Setup ..................................................................................................................... Slew Rate Setup ............................................................................................................. TPS22914/15 Vout tR Example (VIN = 3.3V, RL = 10Ω) ................................................................. TPS22914/15EVM-078 Schematic 2 3 3 4 6 7 8 List of Tables 1 TPS22914/15 Rise Time, Output Current Rating, Enable, and Output Discharge Characteristics ............... 1 2 Bill of Materials TPS22914/15EVM ........................................................................................ 9 SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 1 Introduction www.ti.com 1 Introduction 1.1 Description The TPS22914/15EVM is a two sided PCB containing the TPS22914/15 load switch device. The VIN and VOUT connections to the device and the PCB layout routing are capable of handling high continuous currents and provide a low resistance pathway into and out of the device under test. Test point connections allow the EVM User to control the device with user defined test conditions and make accurate RON measurements. 1.2 Features • • • • • 2 VIN input voltage range: 1.05 V to 5.5 V. EVM allows access to the VIN, VOUT, GND, and ON pin of the TPS22914/15 Load Switch Device. On board CIN and COUT capacitors. 2 A max continuous current operation. 24 mm2 Load Switch solution size sampled on this EVM. Electrical Performance Refer to the datasheet SLVSCO0 for detailed electrical characteristics of the TPS22914/15. 3 Schematic VIN Sense VOUT Sense TP1 TP3 U1 J1 A2 1 VIN 1.05v - 5.5V VIN VOUT A1 2 C1 1µF B2 ON GND C2 0.1uF B1 2 VOUT 1 2A Max Output C urrent J2 JP3 JP2 TPS2291xBYFP 1 2 GND GND TP2 HI J3 JP1 1 GND 1 2 3 2 1 GND ON LO 2 2 1 GND GND J4 GND GND Figure 1. TPS22914/15EVM-078 Schematic 2 TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback Layout www.ti.com 4 Layout Figure 2. TPS22914/15EVM-078 Top Assembly Figure 3. TPS22914/15EVM-078 Top Layout SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 3 Layout www.ti.com Figure 4. TPS22914/15EVM-078 Bottom Layout 4.1 Setup This section describes the jumpers and connectors on the EVM as well as how to properly connect, set up, and use the EVM. 4.1.1 J1 – Input Connection This is the connection for the leads from the input source. Connect the positive lead to J1-1 or 2 (+) terminals and the negative lead to J3-1 or 2 (-) terminals (GND). 4.1.2 J2 – Output Connection This is the connection for the output of the EVM. Connect the positive lead to J2-1 or 2 (+) terminals and the negative lead to J4-1or 2 (-) terminals (GND). 4.1.3 JP1 – ON This is the enable input for the device. A shorting jumper must be installed on JP3 in either the High or Low position. The TPS22914/15 is active High. ON must not be left floating. An external enable source can be applied to the EVM by removing the shunt and connecting a signal to TP2. Refer to the datasheet for proper ON and OFF voltage level settings. A switching signal may also be used and connected at this point. 4.1.4 TP1 - VIN Sense, TP3 - VOUT Sense These two connections are used when very accurate measurements of the input or output are required. RON measurements should be made using these sense connections when measuring the voltage drop from VIN to VOUT to calculate the resistance. 4 TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback Operation www.ti.com 4.1.5 JP2 - Input Capacitor During normal operation a shorting jumper is placed on JP2 this connects C1 capacitor from the input of the device to ground. Refer to the Applications Section of the Datasheet for additional information on selecting the input capacitor. 4.1.6 JP3 - Output Capacitor During normal operation a shorting jumper is placed on JP3 this connects C2 capacitor from the output of the device to ground. Refer to the Applications Section of the Datasheet for additional information on selecting the output capacitor. 4.1.7 J3-J4 – GND These are connections to GND. 5 Operation Connect the positive input of the VIN power supply to VIN at J1. Connect the negative lead of the power supply to GND at J3. The input voltage range of the TPS22914/15EVM-078 is 1.05 V to 5.5 V. External output loads can be applied to the switch by using J2 VOUT and J4 GND. The TPS22914/15EVM-078 is rated for a maximum continuous current of 2A. Configure JP1 as required. JP1 must be installed for proper operation. When the ON pin is asserted high, the output of the TPS22914/15 will be enabled. SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 5 Test Configurations www.ti.com 6 Test Configurations 6.1 On-Resistance (RON) Test Setup Figure 5 shows a typical setup for measuring On-Resistance. The voltage drop across the switch is measured using the sense connections then divided by the current into the load yielding the RON resistance. Figure 5. RON Setup 6 TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback Test Configurations www.ti.com 6.2 Slew Rate Test Setup Figure 6 shows a test setup for measuring the Slew Rate of the Load Switch. Apply a square wave to the ON pin of the switch using a function generator and apply a voltage to the VIN terminal using a power supply. Observe waveform at VOUT with a scope to measure the slew rate and rise time of the switch with a given input voltage. Figure 6. Slew Rate Setup SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 7 Test Configurations 6.3 www.ti.com VOUT Slew Rate Example Figure 7. TPS22914/15 Vout tR Example (VIN = 3.3V, RL = 10Ω) 8 TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback Bill of Materials (BOM) www.ti.com 7 Bill of Materials (BOM) Table 2. Bill of Materials TPS22914/15EVM Qty Designator Value 1 !PCB1 1 C1 1uF 1 C2 0.1uF 4 J1, J2, J3, J4 1 JP1 2 Description Package Reference Printed Circuit Board Manufacturer Part Number Any HVL078 CAP, CERM, 1uF, 25V, +/-10%, X7R, 0603 0603 MuRata GRM188R71E105KA12D CAP, CERM, 0.1uF, 100V, +/-10%, X7R, 0603 0603 MuRata GRM188R72A104KA35D 0.100 inch x 2 Sullins PEC02SAAN Header, 100mil, 3x1, Tin plated, TH Header, 3 PIN, 100mil, Tin Sullins Connector Solutions PEC03SAAN JP2, JP3 Header, 100mil, 2x1, Tin plated, TH Header, 2 PIN, 100mil, Tin Sullins Connector Solutions PEC02SAAN 1 LBL1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll PCB Label 0.650"H x 0.200"W Brady THT-14-423-10 3 SH-J1, SH-J2, SH-J3 1x2 Shunt, 100mil, Gold plated, Black Shunt 3M, alternate: Samtec 969102-0000-DA, alternate: SNT100-BK-G 2 TP1, TP3 Red Test Point, Multipurpose, Red, TH Red Multipurpose Testpoint Keystone 5010 1 TP2 Test Point, Multipurpose, Yellow, TH Yellow Multipurpose Testpoint Keystone 5014 1 U1 Single Channel Ultra-Low Resistnace Load Switch YFP0004ABAB Texas Instruments TPS22915BYFP 1 U1 Single Channel Ultra-Low Resistnace Load Switch YFP0004ABAB Texas Instruments TPS22914BYFP 1 U1 Single Channel Ultra-Low Resistnace Load Switch YFP0004ABAB Texas Instruments TPS22915CYFP 1 U1 Single Channel Ultra-Low Resistnace Load Switch YFP0004ABAB Texas Instruments TPS22914CYFP 0 FID1, FID2, FID3 Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A PEC02S Header, Male 2-pin, 100mil spacing, AAN Yellow SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback TPS22914/15EVM-078 2A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 9 Revision History www.ti.com Revision History Changes from A Revision (July 2014) to B Revision ..................................................................................................... Page • 10 Added TPS22914C and TPS22915C to document. .................................................................................. 1 Revision History SLVUA84A – June 2014 – Revised August 2014 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All semiconductor products (also referred to herein as “components”) are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment. 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