Related Manuals for Texas Instruments bq25010
Summary of Contents for Texas Instruments bq25010
- Page 1 (bqHYBRID) for Single-Chip Charger and DC-DC Converter for Bluetooth Headsets and Other Portable Applications User's Guide June 2007 SLUU214A...
- Page 2 (bqHYBRID) EVM for Single-Chip Charger and DC-DC Converter for Bluetooth Headsets and Other Portable Applications User's Guide Literature Number: SLUU214A December 2004 – Revised June 2007...
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Page 3: Evm Features
• The output voltage of an integrated 1-MHz synchronized buck converter is either adjustable from 0.7 V to VBAT (bq25010/15), fixed at 3.3 V (bq25011), or fixed at 1.8 V (bq25012/17), and is capable of delivering up to 150 mA (bq25010/11/12) or 300 mA (bq25015/17) of load current. -
Page 4: Recommended Operating Conditions
www.ti.com I/O Description I/O Description Jack Description J1-POS AC adapter, positive output J1-GND AC adapter, negative output USB B-connector socket J3-SYS-OUT Positive output to system J3-DC– Negative output to system J4-BAT+ Positive output to battery J4-BAT– Negative output to battery J5-STAT1 STAT1 pin output voltage (when J7-2 and -3 are shorted) J5-STAT2... - Page 5 For bq25010, the output voltage is variable over a wide range. It may require a higher inductance for the worst case to maintain 30% current ripple. Depending on specific applications, an inductance with up to 60% current ripple may be acceptable.
- Page 6 Introduction SLUU214A – December 2004 – Revised June 2007 Submit Documentation Feedback...
- Page 7 Chapter 2 SLUU214A – December 2004 – Revised June 2007 Basic Functions Evaluation Equipment 2.1.1 POWER SUPPLIES Two power supplies capable of supplying 6 V at 1 A are required. 2.1.2 METERS Three Fluke 75 (equivalent or better) or Two equivalent voltmeters and an equivalent ammeter 2.1.3 OSCILLOSCOPE An oscilloscope and a single voltage probe are required.
- Page 8 www.ti.com PROCEDURE Current Meter bqHYBRID BAT+ Power (J1) (J4) Power Supply #1 Supply #2 50 W BAT– Computer (J3) 0.5 W B0235-01 Figure 2-1. Original Test Setup (Setup A) PROCEDURE 1. Make sure the Equipment Setup steps are followed. Turn on power supply #2. Then turn on the computer.
- Page 9 www.ti.com PROCEDURE voltage of power supply #2 slowly to 4.2 V. Disconnect J6 pin 1 (EN) from pin 2 (DC–). Make J6 pin 1 (EN) open. Verify the voltage across R (SYS to DC–) is regulated between 1.75 V and 1.85 V. Verify the voltage at the SW pin, or terminal 1 of L1, is like that shown in Figure 2-3.
- Page 10 www.ti.com PROCEDURE G002 Figure 2-5. Waveform at Pin SW 11. Converter Enable and Disable. Disconnect the current meter, the 5-Ω, 50-W resistor, and power supply #2 from J4. Short J6 pin 1 (EN) and pin 2 (DC–). Verify the voltage of SYS (J3) is below 100 12.
- Page 11 www.ti.com PROCEDURE G003 Figure 2-7. BAT+ Waveform at No Load 13. No Battery; Charger Connected to System Directly. Connect the 500-Ω, 0.25-W resistor across J4 (BAT+ and BAT–). Make sure the test setup has been changed to setup E, as shown in Fig. 8. Verify the red LED (D3) and green LED (D4) are on and the green LED (D2) is off.
- Page 12 Basic Functions Evaluation SLUU214A – December 2004 – Revised June 2007 Submit Documentation Feedback...
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Page 13: Bill Of Materials
Chapter 3 SLUU214A – December 2004 – Revised June 2007 Bill of Materials, Board Layout, and Schematic Bill of Materials bq2501x RefDes DESCRIPTION SIZE Part Number x = 0 x = 1 x = 2 x = 5 x = 7 -001 -002 -003... -
Page 14: Board Layout
www.ti.com Board Layout bq2501x RefDes DESCRIPTION SIZE Part Number x = 0 x = 1 x = 2 x = 5 x = 7 -001 -002 -003 -004 -005 R4, R5, Resistor, chip, 1.5-kΩ, 1/16-W, 603 Resistor, chip, 1.62-kΩ, 1/16-W, 1% R8, R9 Resistor, chip, 1-kΩ, 1/16-W, QFN-20... - Page 15 www.ti.com Board Layout 2.210" (56.134 mm) 1.520" (38.608 mm) K003 Figure 3-2. Layer 1 2.210" (56.134 mm) 1.520" (38.608 mm) K004 Figure 3-3. Layer 2 SLUU214A – December 2004 – Revised June 2007 Bill of Materials, Board Layout, and Schematic Submit Documentation Feedback...
- Page 16 www.ti.com Board Layout Figure 3-4. Mask 1 Figure 3-5. Mask 2 2.210" (56.134 mm) 1.520" (38.608 mm) K002 Figure 3-6. Silkscreen Bill of Materials, Board Layout, and Schematic SLUU214A – December 2004 – Revised June 2007 Submit Documentation Feedback...
- Page 17 www.ti.com Schematic Schematic Figure 3-7. Schematic Diagram SLUU214A – December 2004 – Revised June 2007 Bill of Materials, Board Layout, and Schematic Submit Documentation Feedback...
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Page 18: Evaluation Board/Kit Important Notice
Schematic EVALUATION BOARD/KIT IMPORTANT NOTICE Texas Instruments (TI) provides the enclosed product(s) under the following conditions: This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR EVALUATION PURPOSES ONLY and is not considered by TI to be a finished end-product fit for general consumer use. - Page 19 Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265 Copyright 2007, Texas Instruments Incorporated SLUU214A – December 2004 – Revised June 2007...
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Page 20: Important Notice
TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, TI will not be responsible for any failure to meet such requirements. Following are URLs where you can obtain information on other Texas Instruments products and application solutions: Products... -
Page 21: Texas Instruments
Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Texas Instruments BQ25010EVM BQ25015EVM BQ25017EVM...
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