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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. As such, the goods being provided may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective considerations, including product safety measures typically found in the end product incorporating the goods.
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These types of devices can be identified using the EVM schematic located in the EVM User’s Guide. When placing measurement probes near these devices during operation, please be aware that these devices may be very warm to the touch. Copyright 2004, Texas Instruments Incorporated Mailing Address: Texas Instruments...
About This Manual This user’s guide provides the information needed to set up and operate the TPS60230EVM-047 evaluation module. For a more detailed description of the TPS60230, please refer to the product data sheet available from the Texas In- struments web site at http://www.ti.com. Additional support documents are listed in the sections of this guide entitled Related Documentation from Texas Instruments.
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If you have questions regarding either the use of this evaluation module or the information contained in the accompanying documentation, please contact your local TI sales representative, the Texas Instruments Product Information Center at (972) 644−5580, or visit the TI Semiconductor Online Technical Sup- port pages at http://www.ti.com.
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TPS60230EVM 047 This user’s guide describes the characteristics, operation, and use of the TPS60230EVM-047 LED charge-pump current-source evaluation module (EVM). This EVM features a high-efficiency charge-pump-based white LED driver designed to operate off a single cell Li-Ion battery and drive up to five white LEDs with up to 20mA each.
(SLVS516) for more information on adjusting the LED current. Initial Configuration This section describes the jumpers and connectors on the EVM, as well as how to properly connect, set up, and use the TPS60230EVM-047. Input/Output Connector Descriptions 2.1.1 J1: VIN This is the positive connection to the input power supply or battery.
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LED forward voltage. Figure 1. Efficiency vs VIN Input/Output Connector Descriptions JP2 (EN1) LED CURRENT Full (20mA for R1 = 7.87kΩ) EN2 and EN1 = On = 20mA Input Voltage (V) TPS60230EVM-047 1/3 full 2/3 full 6.3 6.5...
Printed Circuit Board (PCB) Layout PCB layout is critical for all switch-mode power supplies. Figure 2, Figure 3, and Figure 4 show the board layout for the TPS60230EVM-047 PWB. The nodes with high switching frequencies and currents are short and are isolated from the noise-sensitive feedback circuitry.
PCB, 1.55 in x 1.195 in x 0.062 in −− Shunt, 100mil, black Schematic Size Part Number C1608X5R0J105KT C1608X5R1A474KT 1210 Lumex SML−LX2832UWC−TR 0.100 x 2 Sullins PTC36SAAN 0.100 x 3 Sullins PTC36SAAN 0.80 x 0.80 TPS60230RGT HPA047 0.100 929950−00 TPS60230EVM-047...