Texas Instruments bq24740/1EVM User Manual Download | Manualshive

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Bill of Materials, Board Layout, and Schematics

Figure 7. Bottom Assembly

SLUU284A – June 2007 – Revised October 2008

bq24740/1EVM (HPA206) For Multicell Synchronous Notebook Charger

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Summary of Contents for bq24740/1EVM

Page 1: ...er to system power selector function User selectable 2 cell 3 cell or 4 cell Li ion battery voltage User programmable battery regulation voltage with external voltage source 4 2 cell by default User p...

Page 2: ...SLUS875 Jack Description J1 ACPWR AC adapter positive output J1 PGND AC adapter negative output J2 1 BYPASS BYPASS drive signal on EVM BYPASS_EX J2 2 Gate of Q2 J2 3 External BYPASS drive signal J3 1...

Page 3: ...cription Factory Setting J2 BYPASS drive setting Jumper on 1 2 1 2 Use onboard BYPASS drive 2 3 Use external BYPASS drive J3 ACDRV drive setting Jumper on 1 2 1 2 Use onboard ACDRV drive 2 3 Use exter...

Page 4: ...ils VXXX External voltage supply name VADP VBT VSBT LOADW External load name LOADR LOADI V TPyyy Voltage at HPA206 internal test point TPyyy For example V TP12 means the voltage at TP12 V Jxx Voltage...

Page 5: ...C 5 V 0 1 A current limit and then turn off supply B Connect the output of power supply 1 in series with a current meter multimeter to J1 ACPWR GND C Connect a voltage meter across J1 ACPWR GND D Set...

Page 6: ...TP VREF 0 1 V Measure V TP REGN 0 V 500 mV 4 Increase the output voltage of PS 1 until D7 EXTPWR is on but do not exceed 20 V Measure V TP ACDET 2 4 V 200 mV Measure V J1 POS 17 9 V 1 V Measure V J8...

Page 7: ...disable the output The setup is now like Figure 2 for HPA206 Ensure that Ibat 0 A 10 mA and Isys 0 A 10 mA Figure 2 Test Setup for HPA206 bq24740EVM 4 Uninstall J20 Enable the charging for bq24740 onl...

Page 8: ...placed close to Q4 drain and Q5 source bq24740 bq24741 RefDes Value Description Size Part Number MFR 001 002 0 0 C1 C3 C11 Open Capacitor Ceramic 0805 STD STD C18 0 0 C12 C25 Open Capacitor Ceramic 1...

Page 9: ...T Vishay Liteon Q10 Q13 115 mA 1 2 Ohms Q15 Q17 Q18 Q19 Q20 Q21 Q22 Q23 3 3 Q8 Q9 Q11 NDS0605 MOSFET P ch 60 V SOT 23 NDS0605 Vishay 180 mA 5 Ohms 1 1 R1 430K Resistor Chip 1 16W 1 0603 STD STD 2 2 R1...

Page 10: ...0 100 x 0 100 5002 Keystone TP7 TP8 Color Keyed inch TP9 TP10 TP13 TP15 TP16 TP17 TP18 2 2 TP6 TP26 5001 Test Point Black Thru Hole 0 100 x 0 100 5001 Keystone Color Keyed inch 1 0 U1 BQ24740RH IC Bat...

Page 11: ...w ti com Bill of Materials Board Layout and Schematics Figure 3 Top and Silk Layer SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 11 Submit Docu...

Page 12: ...Materials Board Layout and Schematics www ti com Figure 4 Second Layer bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 12 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Page 13: ...com Bill of Materials Board Layout and Schematics Figure 5 Third Layer SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 13 Submit Documentation Fe...

Page 14: ...Materials Board Layout and Schematics www ti com Figure 6 Bottom Layer bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 14 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Page 15: ...m Bill of Materials Board Layout and Schematics Figure 7 Bottom Assembly SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 15 Submit Documentation...

Page 16: ...Materials Board Layout and Schematics www ti com Figure 8 Top Assembly bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 16 SLUU284A June 2007 Revised October 2008 Submit Documentation F...

Page 17: ...Schematics www ti com Bill of Materials Board Layout and Schematics SLUU284A June 2007 Revised October 2008 bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 17 Submit Documentation Feedb...

Page 18: ...Bill of Materials Board Layout and Schematics www ti com bq24740 1EVM HPA206 For Multicell Synchronous Notebook Charger 18 SLUU284A June 2007 Revised October 2008 Submit Documentation Feedback...

Page 19: ...duct This notice contains important safety information about temperatures and voltages For additional information on TI s environmental and or safety programs please contact the TI application enginee...

Page 20: ...siness practice TI is not responsible or liable for any such statements TI products are not authorized for use in safety critical applications such as life support where a failure of the TI product wo...

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