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Texas Instruments bq2425xEVM-150, Руководство пользователя

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Texas Instruments bq2425xEVM-150 Скачать руководство пользователя страница 17

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Layout and Bill of Materials

Figure 13. bq2425xEVM-150 Second Layer (Internal) Routine

17

SLUUA08A – March 2013 – Revised April 2013

bq2425xEVM-150, Single-Cell Li-Ion Switch-Mode Charger

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Copyright © 2013, Texas Instruments Incorporated

Содержание bq2425xEVM-150

Страница 1: ...Key Parameters Setting 6 5 Test Procedure 7 5 1 Definition 7 5 2 Recommended Test Equipment 7 5 3 Software 7 5 4 Recommended Test Equipment Set Up 8 5 5 Recommended Test Procedure 10 6 Test Results 1...

Страница 2: ...current limit and charge current limit Standalone mode also serves as the default settings when a DCP adapter is present They enter host mode while the I2 C registers are accessed and the watchdog ti...

Страница 3: ...A The bq24250 bq24251 and bq24257 devices also have complete system level protection such as input undervoltage lockout UVLO input over voltage protection OVP battery OVP sleep mode thermal regulatio...

Страница 4: ...C5 A1 BAT A2 CSIN SYS A3 PG ND A4 SW A5 IN B1 BAT B2 CSIN SYS B3 PG ND B4 SW B5 IN C1 BAT C2 CSIN SYS C3 PG ND C4 SW C5 IN D 1 ISET D 2 D EN2 D 3 D EN1 D 4 CE D 5 PM ID E1 PG INT E2 SCL E3 STAT E4 VD...

Страница 5: ...k J11 LDO Positive LDO terminal J13 GND Ground LDO terminal J12 LDO and GND LDO terminal block J8 CSIN SYS Positive system terminal J10 GND Negative system terminal J9 SYS CSIN and GND System terminal...

Страница 6: ...and Key Parameters Jumpers Description JP1 Shorting Jumper D EN1 and D EN2 JP2 2 3 D EN1 HI D EN1 to logic high 2 1 D EN1 LO D EN1 to logic low JP3 2 3 CE HI To place the battery charger in standby m...

Страница 7: ...roperly installed bq2425x evaluation software A HPA172 USB to I2C communication kit Three voltage meters VM Two equivalent current meters A able to measure 3 A current 5 3 Software Download BQ2425xSW...

Страница 8: ...short twisted pair wires of appropriate gauge wire for the amount of the current handles 3 A 2 Set power supply 1 PS 1 for 6 V 3 A current limit then turn off supply Figure 2 Original Test Setup 8 bq2...

Страница 9: ...the battery or battery emulator in series with the current meter to J5 and J7 or J6 BAT GND 5 Connect a voltmeter VM 2 across J8 and J10 SYS test point GND 6 Connect VM 3 across J5 and J7 BAT GND 7 C...

Страница 10: ...and PS 2 6 Enable PS 2 or equivalent battery and adjust PS 2 so that the voltage measured by VM 3 across BAT and GND measures 3 6 V 50 mV 7 Adjust the power supply so VM 1 still reads 6 V 100 mV and V...

Страница 11: ...Ensure that the recommended test setup is followed 2 Follow Section 6 for initial setup 3 Ensure the CE is low by shorting JP3 to GND and jumper shorting pin TS and Fix 4 Enable PS 2 or equivalent ba...

Страница 12: ...ut Regulation Ripple at ICHG 120 mA 6 2 Efficiency Data Figure 8 illustrates the efficiency when the device is regulating the battery voltage constant voltage charge region Here the charge current was...

Страница 13: ...between the SYS CSIN pin and PGND of the IC This minimizes the current path loop area from the SW pin through the LC filter and back to the PGND pin 5 Place all decoupling capacitors close to their r...

Страница 14: ...ww ti com 7 2 Layout Figure 10 bq2425xEVM 150 Top Assembly 14 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger SLUUA08A March 2013 Revised April 2013 Submit Documentation Feedback Copyright 2013...

Страница 15: ...of Materials Figure 11 bq2425xEVM 150 Top Silkscreen 15 SLUUA08A March 2013 Revised April 2013 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger Submit Documentation Feedback Copyright 2013 Texas...

Страница 16: ...rials www ti com Figure 12 bq2425xEVM 150 Top Layer 16 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger SLUUA08A March 2013 Revised April 2013 Submit Documentation Feedback Copyright 2013 Texas I...

Страница 17: ...erials Figure 13 bq2425xEVM 150 Second Layer Internal Routine 17 SLUUA08A March 2013 Revised April 2013 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger Submit Documentation Feedback Copyright 20...

Страница 18: ...ti com Figure 14 bq2425xEVM 150 Third Layer Internal Routine 18 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger SLUUA08A March 2013 Revised April 2013 Submit Documentation Feedback Copyright 201...

Страница 19: ...l of Materials Figure 15 bq2425xEVM 150 Bottom Layer 19 SLUUA08A March 2013 Revised April 2013 bq2425xEVM 150 Single Cell Li Ion Switch Mode Charger Submit Documentation Feedback Copyright 2013 Texas...

Страница 20: ...0603 STD STD 2 2 2 R5 6 20 0K Resistor Chip 1 16W 1 0603 STD STD 1 1 1 R7 100K Potentiometer 3 8 Cermet Twelve Turn 0 25x0 17 inch 3266W 1 104LF Bourns 1 1 1 R8 267 Resistor Chip 1 16W 1 0603 STD STD...

Страница 21: ...ncy energy and has not been tested for compliance with the limits of computing devices pursuant to part 15 of FCC or ICES 003 rules which are designed to provide reasonable protection against radio fr...

Страница 22: ...na type and its gain should be so chosen that the equivalent isotropically radiated power e i r p is not more than that necessary for successful communication This radio transmitter has been approved...

Страница 23: ...roduct only after you obtained the license of Test Radio Station as provided in Radio Law of Japan with respect to this product or 3 Use of this product only after you obtained the Technical Regulatio...

Страница 24: ...property damage personal injury or death If there are questions concerning these ratings please contact a TI field representative prior to connecting interface electronics including input power and in...

Страница 25: ...change without notice TI grants you permission to use these resources only for development of an application that uses the TI products described in the resource Other reproduction and display of thes...

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