Related Manuals for Texas Instruments LP8728EVM
Summary of Contents for Texas Instruments LP8728EVM
- Page 1 Using the LP8728EVM Evaluation Module User's Guide Literature Number: SNVU231 August 2013...
- Page 2 VIN and all four VOUT connections. Dual connectors are provided for easy four-wire connection. For evaluation purposes, the LP8728EVM has been tested over a 4.5 V to 5.5 V input range. Users are cautioned to evaluate their specific operating conditions and choose components with the appropriate voltage ratings before designing in LP8728 into a final product.
- Page 3 1.5µH PG_B4 FB_B3 Micro OUT3 10µF Controller EN_B1 SW_B3 EN_B2 EN_B3 VIN_B4 10µF EN_B4 1.5µH DEFSEL FB_B4 OUT4 SW_B4 10µF Figure 2-1. Typical Application SNVU231 – August 2013 Description of LP8728 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
- Page 4 LP8728EVM Setup Figure 3-1 shows the LP8728EVM with input and output connectors and main components on the board. Input power supply is connected to VIN connectors. Two connectors are provided for easy 4-wire connection. A force line should be connected to connector X1 terminals VIN and GND. Sense wires should be connected to connector X2 terminals VINS and GNDS.
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Page 5: Board Layout
Chapter 4 SNVU231 – August 2013 Board Layout Figure 4-1. Layer 1 Top (Signal) Figure 4-2. Layer 2 (GND) (Picture in reverse colors) SNVU231 – August 2013 Board Layout Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 6 Figure 4-3. Layer 2 (GND / VIN) Figure 4-4. Layer 4 Bottom (Signal) Board Layout SNVU231 – August 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
- Page 7 Figure 4-5. Close-up of the LP8728 and Main External Components SNVU231 – August 2013 Board Layout Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated...
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Page 8: Board Stackup
Core 0.7 mm • Ground plane Layer 3, 35 µm • Prepreg 0.1 mm • Bottom Layer 4 - copper, 35 µm • Surface finish immersion gold Board Stackup SNVU231 – August 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... - Page 9 LP8728EVM Control Interface Figure 6-1. LP8728EVM Control Pins All LP8728 digital input and out signals are routed to 20-pin connector (J3) pins. Pins closer to PCB edge go straight to the LP8728 digital pins. These pins can be used to connect LP8728 pins to any external source (signal generators, external controllers, etc).
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Page 10: Evaluation Board Schematic
Chapter 7 SNVU231 – August 2013 Evaluation Board Schematic Figure 7-1. Evaluation Board Schematic Evaluation Board Schematic SNVU231 – August 2013 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 11: Bill Of Materials
LP8728 Instruments X1, X2, X3, X4, Conn Term Block, 2POS, PhoenixContact_171 X5, X6, X7, X8, 1715721 Phoenix Contact 5.08mm, TH 5721 X9, X10, X11 SNVU231 – August 2013 Bill of Materials Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated... -
Page 12: Important Notice
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.