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Texas Instruments bq24072, User Manual

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Texas Instruments bq24072 User Manual Download Page 8

Copyright © 2016, Texas Instruments Incorporated

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www.ti.com

8

SLVU274E – November 2008 – Revised January 2017

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Copyright © 2008–2017, Texas Instruments Incorporated

bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion and Li-Polymer
Charge Management IC EVM

5

Schematic

The bq24072/3/4/5/9(T) and bq24230/2 EVM schematic is shown in

Figure 5

Figure 5. Schematic

Summary of Contents for bq24072

Page 1: ...sing a dc power supply The charger is programmed from the factory to deliver 0 9 A of charging current This EVM was designed as a stand alone evaluation module but it also can be interfaced with the system and host via the connectors and headers Contents 1 Introduction 2 2 Considerations When Testing and Using bq24072 3 4 5 9 T and bq24230 2 ICs 2 3 Performance Specification Summary 3 4 Test Summa...

Page 2: ...n internal threshold Sleep mode is entered when the supply is removed Vin drops to the battery voltage 2 Considerations When Testing and Using bq24072 3 4 5 9 T and bq24230 2 ICs Consider the following noteworthy items while testing and using the bq2403x ICs The bq24072 3 4 5 9 T series targets current above a nominal 500 mA 350 mA and the difference are listed in Table 1 Table 1 Ordering Informat...

Page 3: ...The HPA073 bq24072 3 4 5 9 T and bq24230 2 thermal design is optimized 8 vias 0 031 inch PCB 2 oz copper to give θJA 27 C W Table 2 Performance Specification Summary for bq24072 3 4 5 9 T and bq24230 2 EVMs SPECIFICATION TEST CONDITIONS MIN TYP MAX UNITS Input dc Voltage VI AC 4 75 5 6 5 Volts Battery Charge Current IO CHG 1 1 5 Amperes Power Dissipation bq24072 3 4 5 9 T and bq24230 2 IC 1 Cell P...

Page 4: ...tor to J2 OUT VSS Connect a fully discharged Vbat 2 8 V Battery to J3 BAT VSS to BAT and to VSS Apply the jumpers as per Table 3 For the bq2407xEVM adjust the potentiometers as follows measure resistance from TP to VSS R8 ILIM TP12 750 Ω 743 to 757 R11 ISET TP16 1 kΩ 0 98 kΩ to 1 02 kΩ and R16 TS TP1 7 5 kΩ 7 3 kΩ to 7 7 kΩ and for 74 003 R10 ITERM TP15 3 kΩ 2 98 kΩ to 3 02 kΩ For the bq2423xEVM a...

Page 5: ...24073 4 verify that VOUT is 4 4 Vdc Verify that bq24075 9 T is 5 5 Vdc for VIN 5 6 V and equal to VIN for Vin 5 6 V 7 Allow the battery to charge until VBAT is between 3 3 Vdc and 4 Vdc The charger delivers the programmed constant current to the battery unless the input cannot source the required current 8 Verify IBAT is 88 mV or 0 9 A for a 1 kΩ resistor on ISET 9 Verify VOUT bq24072 200 mV above...

Page 6: ...o charging or discharging of the battery 18 Adjust the R16 TS Pot up or down until the TS threshold is reached Verify that the charging current is disabled Return the TS resistance within the normal range and verify the continued charging operation 19 Allow the battery to continue to charge until the battery reaches voltage regulation 4 2 V 40 mV for bq24072 3 4 5 9 T and 4 1 V 4 mV for bq24079 T ...

Page 7: ...on www ti com Test Summary 7 SLVU274E November 2008 Revised January 2017 Submit Documentation Feedback Copyright 2008 2017 Texas Instruments Incorporated bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM Figure 3 Charger Profile With EN1 VSS and EN2 HI Programmed by ISET Figure 4 Charge Enabled Pulled High Then Low Disables Charge ...

Page 8: ...ised January 2017 Submit Documentation Feedback Copyright 2008 2017 Texas Instruments Incorporated bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM 5 Schematic The bq24072 3 4 5 9 T and bq24230 2 EVM schematic is shown in Figure 5 Figure 5 Schematic ...

Page 9: ...72 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM 6 Physical Layouts This section contains the board layout and assembly drawings for the EVM 6 1 Board Layout Figure 6 shows the top assembly view of the EVM Figure 7 shows the top etch layer of the EVM and Figure 8 shows the bottom etch layer Figure 6 Top Assembly View ...

Page 10: ...mber 2008 Revised January 2017 Submit Documentation Feedback Copyright 2008 2017 Texas Instruments Incorporated bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM Figure 7 Board Layout Top Etch Layer ...

Page 11: ...ber 2008 Revised January 2017 Submit Documentation Feedback Copyright 2008 2017 Texas Instruments Incorporated bq24072 3 4 5 9 T and bq24230 2 1 5 A Single Chip Li Ion and Li Polymer Charge Management IC EVM Figure 8 Board Layout Bottom Etch Layer ...

Page 12: ...stor Chip 1 16W 1 0603 Std Std 2 2 2 2 R18 R20 604 Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R2 1k Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R3 10k Resistor Chip 1 16W 1 0603 Std Std 1 1 1 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 2 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 1 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 Std Std 0 0 ...

Page 13: ...0 17 3266W 503LF Bourns 1 1 R17 1k Resistor Chip 1 16W 1 0603 Std Std 2 2 R18 R20 604 Resistor Chip 1 16W 1 0603 Std Std 0 0 R2 1k Resistor Chip 1 16W 1 0603 Std Std 0 0 R3 10k Resistor Chip 1 16W 1 0603 Std Std 1 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 1 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 0 R22 23 7K Resistor Chip 1 16W 1 0603 S...

Page 14: ...p Adjust 0 25x0 17 3266W 503LF Bourns 1 R17 1k Resistor Chip 1 16W 1 0603 Std Std 2 R18 R20 604 Resistor Chip 1 16W 1 0603 Std Std 0 R2 1k Resistor Chip 1 16W 1 0603 Std Std 0 R3 10k Resistor Chip 1 16W 1 0603 Std Std 1 R4 49 9k Resistor Chip 1 16W 1 0603 Std Std 2 R5 R6 1 5K Resistor Chip 1 16W 1 0603 Std Std 0 R21 1 5K Resistor Chip 1 16W 1 0603 Std Std 1 R22 23 7K Resistor Chip 1 16W 1 0603 Std...

Page 15: ... R4 49 9k Resistor Chip 1 16 W 1 0603 Std Std 2 2 R5 R6 1 5K Resistor Chip 1 16 W 1 0603 Std Std 0 0 R21 1 5K Resistor Chip 1 16 W 1 0603 Std Std 0 1 R22 2 7K Resistor Chip 1 16 W 1 0603 Std Std 0 1 R23 11K Resistor Chip 1 16 W 1 0603 Std Std 0 1 R7 100k Resistor Chip 1 16 W 1 0603 Std Std 1 0 R7 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R19 0 Resistor Chip 1 16 W 1 0603 Std Std 1 1 R8 5k Potentio...

Page 16: ... History Changes from C Revision May 2010 to D Revision Page Changed the orientation of Figure 6 9 Revision History Changes from B Revision February 2010 to C Revision Page Added devices bq24072TRGTR and bq24072TRGTT in the Ordering Information table 2 Revision History Changes from A Revision July 2009 to B Revision Page Changed Figure 6 9 Changed Figure 7 10 Changed Figure 8 11 Changed the Bill o...

Page 17: ... set forth above or credit User s account for such EVM TI s liability under this warranty shall be limited to EVMs that are returned during the warranty period to the address designated by TI and that are determined by TI not to conform to such warranty If TI elects to repair or replace such EVM TI shall have a reasonable time to repair such EVM or provide replacements Repaired EVMs shall be warra...

Page 18: ...the user guide with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device Concernant les EVMs avec antennes détachables Conformément à la réglementation d Industrie Canada le présent émetteur radio peut fo...

Page 19: ...er guide prior to connecting any load to the EVM output If there is uncertainty as to the load specification please contact a TI field representative During normal operation even with the inputs and outputs kept within the specified allowable ranges some circuit components may have elevated case temperatures These components include but are not limited to linear regulators switching transistors pa...

Page 20: ...COST OF REMOVAL OR REINSTALLATION ANCILLARY COSTS TO THE PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES RETESTING OUTSIDE COMPUTER TIME LABOR COSTS LOSS OF GOODWILL LOSS OF PROFITS LOSS OF SAVINGS LOSS OF USE LOSS OF DATA OR BUSINESS INTERRUPTION NO CLAIM SUIT OR ACTION SHALL BE BROUGHT AGAINST TI MORE THAN TWELVE 12 MONTHS AFTER THE EVENT THAT GAVE RISE TO THE CAUSE OF ACTION HAS OCCURRED 8 2 Specif...

Page 21: ... TI Resource NO OTHER LICENSE EXPRESS OR IMPLIED BY ESTOPPEL OR OTHERWISE TO ANY OTHER TI INTELLECTUAL PROPERTY RIGHT AND NO LICENSE TO ANY TECHNOLOGY OR INTELLECTUAL PROPERTY RIGHT OF TI OR ANY THIRD PARTY IS GRANTED HEREIN including but not limited to any patent right copyright mask work right or other intellectual property right relating to any combination machine or process in which TI product...

Page 22: ...tronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Texas Instruments BQ24073EVM BQ24232EVM BQ24074EVM BQ24075EVM BQ24230EVM BQ24072EVM BQ24079TEVM BQ24075TEVM BQ24072TEVM ...

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