TPS22962EVM-079

User's Guide SLVUAA0 – July 2014 TPS22962EVM-079 10A Load Switch IC The TPS22962EVM-079 evaluation module (EVM) allows the user to connect power to and control the 8pin SON package load switch. Parameters such as the On-resistance, output rise time and output discharge resistance can be easily evaluated. Table 1 lists a short description of the load switch performance specifications; refer to the datasheet SLVSCN3 for more details Table 1. TPS22962 Slew Rate, Output Current Rating, Enable, and Output Discharge Options EVM Device Slew Rate Typical VBIAS = 5V VIN (V) Max. Continuous Current Enable (ON Pin) Quick Output Discharge HVL079-003 TPS22962 2663 μs 5 10A Active High Yes 1 2 3 4 5 6 7 Contents Description .................................................................................................................... 2 Electrical Performance ...................................................................................................... 2 Schematic ..................................................................................................................... 2 Layout ......................................................................................................................... 3 Operation ..................................................................................................................... 6 Test Configurations .......................................................................................................... 7 Bill of Materials (BOM) ..................................................................................................... 10 1 TPS22962EVM-079 Schematic List of Figures 2 3 4 5 6 7 ........................................................................................... TPS22962EVM-079 Top Assembly ....................................................................................... TPS22962EVM-079 Top Layout .......................................................................................... TPS22962EVM-079 Bottom Layout ....................................................................................... RON Setup ..................................................................................................................... Slew Rate Setup ............................................................................................................. TPS22962 Vout tR Example (VBIAS = 5V, VIN = 5V, RL = 10Ω) .......................................................... 2 3 4 5 7 8 9 List of Tables 1 TPS22962 Slew Rate, Output Current Rating, Enable, and Output Discharge Options ........................... 1 2 Bill of Materials SLVUAA0 – July 2014 Submit Documentation Feedback ............................................................................................................. TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 10 1 Description 1 www.ti.com Description The TPS22962EVM is a two sided PCB containing the TPS22962 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. 1.1 Features • • • • • 2 VIN input voltage range: 0.8V to 5.5V. VBIAS voltage range: 2.5 to 5.5V EVM allows access to the VIN, VOUT and ON pin of the TPS22962 Load Switch Device. On board CIN and COUT capacitors. 10A max continuous current. Electrical Performance Refer to the datasheet SLVSCN3 for detailed electrical characteristics of the TPS22962. 3 Schematic TP1 VIN TP2 TP3 VIN SENSE VOUT SENSE VIN U1 J1 + 1 0.8V - 5.5V - 2 VIN 1 2 C1 1µF JP1 TP4 3 VBIAS 2.5V-5.5V AGND 4 VBIAS PAD VIN VOUT VIN VOUT VBIAS VOUT ON GND TP5 8 VOUT 7 J2 6 2 + 5 1 - C2 0.1µF TPS22962DNY VOUT AGND C3 0.01µF VIN AGND JP2 TP6 ON AGND JP3 1 2 3 High Low TP7 TP8 GND AGND AGND VBIAS AGND TP9 GND AGND AGND GND AGND Figure 1. TPS22962EVM-079 Schematic 2 TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUAA0 – July 2014 Submit Documentation Feedback Layout www.ti.com 4 Layout Figure 2. TPS22962EVM-079 Top Assembly SLVUAA0 – July 2014 Submit Documentation Feedback TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 3 Layout www.ti.com Figure 3. TPS22962EVM-079 Top Layout 4 TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUAA0 – July 2014 Submit Documentation Feedback Layout www.ti.com Figure 4. TPS22962EVM-079 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 (+) terminal and the negative lead to J1-2 (–) terminal (GND). TP1 is also available for connecting to the input. J1 Connector is rated for currents of 15A, use the J1 input connection point when operating the EVM in the High current mode (IIN > 3A). 4.1.2 J2 – Output Connection This is the connection for the output of the EVM. Connect the positive lead to J2-2 (+) terminal and the negative lead to J2-1 (–) terminal (GND). TP5 is also available for connecting to the output. J2 Connector is rated for currents of 15A, use the J2 input connection point when operating the EVM in the High current mode (IOUT > 3A). 4.1.3 JP3 – 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 TPS22962 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 TP6. Refer to the datasheet for proper ON and OFF voltage level settings. A switching signal may also be used and connected at this point. SLVUAA0 – July 2014 Submit Documentation Feedback TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 5 Operation 4.1.4 www.ti.com TP2 – 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 and then calculating the resistance. 4.1.5 TP4 - VBIAS This connection to the device is used for applying VBIAS voltage, VBIAS voltage range is from 2.5V to 5.5V, VBIAS voltage must be applied for the device to operate. 4.1.6 JP1 Input Capacitor During normal operation a shorting jumper is placed on JP1 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. 4.1.7 JP2 – Output Capacitor During normal operation a shorting jumper is placed on JP2 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. 4.1.8 TP7/TP8/TP9 – GND These are connections to GND. 5 Operation Connect the positive input of the VIN power supply to VIN at J1-1 for currents greater than 3A, or connect the positive input of the VIN power supply to VIN at TP1 for currents less than 3A. Connect the negative lead of the power supply to GND at J1-2. The input voltage range of the TPS22962EVM-079 is 0.8V to 5.5V. The VBIAS voltage range of the TPS22962EVM-079 is 2.5V to 5.5V. Connect the positive input of the VBIAS power supply to VBIAS at TP4. Connect the negative lead of the VBIAS power supply to GND at TP7, TP8 or TP9. External output loads can be applied to the switch by connecting between J2-2 VOUT and J2-1 GND for currents greater than 3A. For currents less than 3A, connect the output load between TP5 and GND (TP7, TP8 or TP9). The TPS22962EVM-079 is rated for a maximum continuous current of 10A. Configure JP3 as required. JP3 must be installed for proper operation. When the ON pin is asserted high, the output of the TPS22962 will be enabled. 6 TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUAA0 – July 2014 Submit Documentation Feedback 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 SLVUAA0 – July 2014 Submit Documentation Feedback TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 7 Test Configurations 6.2 www.ti.com Slew Rate Test Setup Figure 6 shows a test setup for measuring the Slew Rate of the Load Switch. Controlling the ON pin of the switch with a signal source and then measuring the VOUT with a scope shows the switches ability to have a controlled VOUT ramp. Figure 6. Slew Rate Setup 8 TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated SLVUAA0 – July 2014 Submit Documentation Feedback Test Configurations www.ti.com 6.3 VOUT Slew Rate Examples Figure 7. TPS22962 Vout tR Example (VBIAS = 5V, VIN = 5V, RL = 10Ω) SLVUAA0 – July 2014 Submit Documentation Feedback TPS22962EVM-079 10A Load Switch IC Copyright © 2014, Texas Instruments Incorporated 9 Bill of Materials (BOM) 7 www.ti.com Bill of Materials (BOM) Table 2. Bill of Materials Designator Quantity Value !PCB 1 C1 1 1uF C2 1 C3 1 FID1, FID2, FID3 3 J1, J2 2 JP1, JP2 Description Package Reference Printed Circuit Board Part Number Manufacturer HVL079 Any CAP, CERM, 1uF, 16V, +/-10%, X5R, 0603 0603 C0603C105K4PACTU Kemet 0.1uF CAP, CERM, 0.1uF, 50V, +/-10%, X7R, 0603 0603 GCM188R71H104KA5 7B MuRata 0.01uF CAP, CERM, 0.01uF, 50V, +/-5%, X7R, 0603 0603 C0603C103J5RACTU Kemet Fiducial mark. There is nothing to buy or mount. Fiducial N/A N/A Terminal Block, 2-pin, 15-A, 5.1mm 0.40 x 0.35 inch ED120/2DS OST 2 Header, 100mil, 2x1, Tin plated, TH Header, 2 PIN, 100mil, Tin PEC02SAAN Sullins Connector Solutions JP3 1 Header, 100mil, 3x1, Tin plated, TH Header, 3 PIN, 100mil, Tin PEC03SAAN Sullins Connector Solutions LBL1 1 Thermal Transfer Printable Labels, 0.650" W x 0.200" H - 10,000 per roll PCB Label 0.650"H x 0.200"W THT-14-423-10 Brady SH-JP1, SH-JP2, SHJP3 3 1x2 Shunt, 100mil, Gold plated, Black Shunt 969102-0000-DA 3M TP1, TP2, TP3, TP4, TP5 5 Red Test Point, Multipurpose, Red, TH Red Multipurpose Testpoint 5010 Keystone TP6 1 Yellow Test Point, Compact, Yellow, TH Yellow Compact Testpoint 5009 Keystone TP7, TP8, TP9 3 Black Test Point, Multipurpose, Black, TH Black Multipurpose Testpoint 5011 Keystone U1 1 IC,Ultra- Low On Resistance, 6A Single ChanLoad SW with Controlled Turn-On DNY0008A TPS22962DNY Texas Instruments ED120/2DS Alternate Part Number Manufac. - - SNT-100BK-G Samtec None Note: Unless otherwise noted in the Alternate Part Number and/or Alternate Manufacturer columns, all parts may be substituted with equivalents. 10 TPS22962EVM-079 10A Load Switch IC SLVUAA0 – July 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. 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