Datasheet LT8491 (Analog Devices) - 79
| 制造商 | Analog Devices |
| 描述 | High Voltage Buck-Boost Battery Charge Controller with Maximum Power Point Tracking (MPPT) and I2C |
| 页数 / 页 | 82 / 79 — TYPICAL APPLICATIONS. VALUE. 2 C REG. I ADDR. REGISTER NAME. Figure 37. … |
| 文件格式/大小 | PDF / 2.1 Mb |
| 文件语言 | 英语 |
TYPICAL APPLICATIONS. VALUE. 2 C REG. I ADDR. REGISTER NAME. Figure 37. 24.6V Lithium-Ion Polymer Battery Charger
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文件文字版本
LT8491
TYPICAL APPLICATIONS
°C) (7mΩ) (60.4kΩ) (10mΩ) (134.1kΩ) (422kΩ) (20kΩ) (6.54kΩ) (3.24kΩ) (93.1kΩ) (0°C) (50
VALUE
→ → → → → → → → → → → x00 000b LOAD 2BC 24.6V Li-Ion POLYMER 10Ah
2 C REG
0x28 0x0 0x2E 0x3462 0x30 0x107C 0x32 0x07D0 0x34 0x028E 0x36 0x0144 0x38 0x03AE 0x40 0x00 0x41 0x32 0x42 0 0x43 0x00 0x44 0x00 0x45 0x00
I ADDR
0x2A 0x1798 0x2C 0x03E8 + – 0x4D
REGISTER NAME
CFG_RSENSE1 CFG_RIMON_OUT CFG_RSENSE2 CFG_RDACO CFG_RFBOUT1 CFG_RFBOUT2 CFG_RDACI CFG_RFBIN2 CFG_RFBIN1 CFG_TBAT_MIN CFG_TBAT_MAX CFG_TMR_S0 CFG_TMR_S1 CFG_TMR_S2 CFG_TMR_S3 CFG_CHRG_MISC [2:0] 100Ω 8491 F37 422k 20k C OUT1 150µF 100nF C CSPOUT 100nF 115k 1µF C OUT2 10µF ×2 18.2k 10k 10Ω 82nF ½W 10mΩ 4.7µF 470nF 200k C OUT4 1µF 19.1k CC DD C OUT3 10µF ×2 ´ TG2 DD FBOR V DD AV ECON AV EXTV FBOUT FBOW LDO33 SWEN EV CC CSPOUT CSNOUT SWENO SRVO_IIN 10k 10k D B2 GAT TEMPSENSE SRVO_FBIN SRVO_IOUT BOOST2 SRVO_FBOUT SCL M4 220nF SDA TO MASTER SW2 M3 2Ω BG2 DDAV 6mΩ GND 1.3k 100k L1 10µH CA : 2.2µF, 100V, AVX 12101C225KAT2A 10Ω 10Ω : 10µF, 35V, MURATA GRM32ER7YA106KA12 3.3nF 549Ω IN4 LT8491 M2 : CENTRAL SEMI CMMR1U-02 , C OUT3 : 100nF, 50V, AVX 08055C10 STATUS IN3 DS B2 : 150µF, 50V PANASONIC EEU-FR1H151 , C : 1µF, 50V, TDK CGA6L2X7R1H105K 3.3nF : 33µF, 63V, SUNCON 63HVH33M , C CSN , D
Figure 37. 24.6V Lithium-Ion Polymer Battery Charger
M1, M2: INFINEON BSC028N06NS M3, M4: INFINEON BSC059N04LSG L1: 10µH COILCRAFT SER2915H-103KL, 10µH WURTH 744 364 1000 D B1 C IN1 C IN2 C OUT1 C OUT2 C OUT4 C CSPOUT CSP CLKOUT 53.6k 68nF BG1 SW1 CLKDET ´ M1 220nF D B1 EV CC SYNC BOOST1 CC 220pF ) C IN3 2.2µF ×2 CC GAT S2 TG1 V C CSNIN CSPIN V IN GATEV INTV MODE SHDN VINR FBIR FBIN FBIW RT SS IIR IMON_IN IOW IOR IMON_OUT 2Ω ) 10k 8.2nF MAX 3.01k ½W 7mΩ 10Ω 1.05k 470nF 4Ω ×2 60.4k 4.7µF ´ 40.2k C IN2 2.2µF ×2 C IN4 2.2µF CC 0.82µF 10nF C IN1 33µF ×3 GATEV 21k 110k 35.7k 5.49k + – 215k 100nF 2 C ADDRESS: 0x10 10nF I 27.4V STAGE 2 (FLOAT) CHARGE VOLTAGE (V STAGE 3 DISABLED 5A CHARGING CURRENT LIMIT 2A TRICKLE CURRENT LIMIT 7.2A INPUT CURRENT LIMIT 53V MAXIMUM PANEL VOLTAGE (V NO TIMER LIMITS TEMPERATURE COMPENSATION DISABLED 202kHz SWITCHING FREQUENCY EXAMPLE SOLAR PANEL: SHARP NT-175UC1 175W 53V 196k 8.06k < SOLAR PANEL V OC 93.1k 3.24k Rev. 0 For more information www.analog.com 79 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Overview I2C Serial Interface I2C: START and STOP Conditions I2C: ACKnowledge I2C: Chip Addressing I2C: Clock Stretching I2C: Data Transfer Transactions I2C: Powering the Interface I2C Data Data: Memory Regions Data: Bytes, Words and Long Words Data: Min/Max Register Values Data: Access Permissions Startup Sequence Battery Charging Algorithm Stage 0: Trickle Charging Stage 1: Full Constant Current Stage 2: Constant Voltage Stage 3: (Optional) Reduced Constant Voltage Done Charging Charging Faults Maximum Power Point Tracking Telemetry Operation Telemetry: Configuration Settings Telemetry: Acquisition CRC Operation EEPROM Operation EEPROM: Startup EEPROM: Reading EEPROM: Writing I2C Register Map I2C Register Descriptions Telemetry Registers TELE_TBAT TELE_POUT TELE_PIN TELE_EFF TELE_IOUT TELE_IIN TELE_VBAT TELE_VIN TELE_VINR Status Registers STAT_CHARGER STAT_SYSTEM STAT_SUPPLY STAT_TSx_REMAIN STAT_CHRG_FAULTS STAT_VERSION STAT_BOOT_CRC STAT_CFG_CRC Control The EEPROM CTRL_WRT_TO_BOOT CTRL_EE_WRT_EN Control Other Functions CTRL_HALT_STARTUP CTRL_CHRG_EN CTRL_RESTART_CHIP CTRL_RESET_FLAG CTRL_UPDATE_TELEM Configure The Telemetry CFG_RSENSE1 CFG_RIMON_OUT CFG_RSENSE2 CFG_RDACO CFG_RFBOUT1 CFG_RFBOUT2 CFG_RDACI CFG_RFBIN2 CFG_RFBIN1 Configure Initial Charger Enable CFG_INIT_CHRG_EN Configure VBAT for Stages 0, 1 and 3 CFG_VS3_25C CFG_UV_S0 CFG_S0_UV CFG_S0_S1 CFG_S1_S0 Configure Temperature Fault Limits CFG_TBAT_MIN CFG_TBAT_MAX Configure Stage Timeout Limits CFG_TMR_S0 CFG_TMR_S1 CFG_TMR_S2 CFG_TMR_S3 Configure Automatic Restart CFG_RSTRT_IN_FLT CFG_RSTRT_IN_DONEA CFG_RSTRT_IN_DONEB CFG_RSTRT_IN_S3 Configure Charge Termination CFG_TERMINATE Configure Misc. CFG_SCAN_RATE_LP CFG_SCAN_RATE CFG_CHRG_MISC Configure Temperature Compensation CFG_TC3, CFG_TC2, CFG_TC1 Configure User Code CFG_USER_CODE Manufacturer Data MFR_DATA1 MFR_DATA2 MFR_DATA3 Applications Information Hardware Configuration HW Config: Input Voltage Sensing and Modulation HW Config: VINR Pin Connections HW Config: Solar Panel Powered Charging HW Config: DC Supply Powered Charging HW Config: VBAT in Stage 2 (VS2) HW Config: Input Current Sense and Limit HW Config: Output Current Sense and Limit HW Config: Current Sense Filtering HW Config: Battery Temperature and Disconnect Sensing HW Config: SHDN Pin Connections HW Config: MODE Pin – Current Conduction Mode HW Config: Driving an LED with the STATUS Pin HW Config: I2C Chip Address Pin In-Situ Battery Charging Hot-Plugging Considerations STATUS Indicator Pin Lithium-Ion Battery Charging Lead-Acid Battery Charging Optional Features Optional: Low Power Mode Optional: Output Feedback Resistor Disconnect Optional: EXTVCC Disconnect Optional: Remote Battery Voltage Sensing Optional: DC Supply Detection Circuit Board Layout Considerations Design Example Typical Applications Package Description Typical Application Related Parts
TYPICAL APPLICATIONS
°C) (7mΩ) (60.4kΩ) (10mΩ) (134.1kΩ) (422kΩ) (20kΩ) (6.54kΩ) (3.24kΩ) (93.1kΩ) (0°C) (50
VALUE
→ → → → → → → → → → → x00 000b LOAD 2BC 24.6V Li-Ion POLYMER 10Ah
2 C REG
0x28 0x0 0x2E 0x3462 0x30 0x107C 0x32 0x07D0 0x34 0x028E 0x36 0x0144 0x38 0x03AE 0x40 0x00 0x41 0x32 0x42 0 0x43 0x00 0x44 0x00 0x45 0x00
I ADDR
0x2A 0x1798 0x2C 0x03E8 + – 0x4D
REGISTER NAME
CFG_RSENSE1 CFG_RIMON_OUT CFG_RSENSE2 CFG_RDACO CFG_RFBOUT1 CFG_RFBOUT2 CFG_RDACI CFG_RFBIN2 CFG_RFBIN1 CFG_TBAT_MIN CFG_TBAT_MAX CFG_TMR_S0 CFG_TMR_S1 CFG_TMR_S2 CFG_TMR_S3 CFG_CHRG_MISC [2:0] 100Ω 8491 F37 422k 20k C OUT1 150µF 100nF C CSPOUT 100nF 115k 1µF C OUT2 10µF ×2 18.2k 10k 10Ω 82nF ½W 10mΩ 4.7µF 470nF 200k C OUT4 1µF 19.1k CC DD C OUT3 10µF ×2 ´ TG2 DD FBOR V DD AV ECON AV EXTV FBOUT FBOW LDO33 SWEN EV CC CSPOUT CSNOUT SWENO SRVO_IIN 10k 10k D B2 GAT TEMPSENSE SRVO_FBIN SRVO_IOUT BOOST2 SRVO_FBOUT SCL M4 220nF SDA TO MASTER SW2 M3 2Ω BG2 DDAV 6mΩ GND 1.3k 100k L1 10µH CA : 2.2µF, 100V, AVX 12101C225KAT2A 10Ω 10Ω : 10µF, 35V, MURATA GRM32ER7YA106KA12 3.3nF 549Ω IN4 LT8491 M2 : CENTRAL SEMI CMMR1U-02 , C OUT3 : 100nF, 50V, AVX 08055C10 STATUS IN3 DS B2 : 150µF, 50V PANASONIC EEU-FR1H151 , C : 1µF, 50V, TDK CGA6L2X7R1H105K 3.3nF : 33µF, 63V, SUNCON 63HVH33M , C CSN , D
Figure 37. 24.6V Lithium-Ion Polymer Battery Charger
M1, M2: INFINEON BSC028N06NS M3, M4: INFINEON BSC059N04LSG L1: 10µH COILCRAFT SER2915H-103KL, 10µH WURTH 744 364 1000 D B1 C IN1 C IN2 C OUT1 C OUT2 C OUT4 C CSPOUT CSP CLKOUT 53.6k 68nF BG1 SW1 CLKDET ´ M1 220nF D B1 EV CC SYNC BOOST1 CC 220pF ) C IN3 2.2µF ×2 CC GAT S2 TG1 V C CSNIN CSPIN V IN GATEV INTV MODE SHDN VINR FBIR FBIN FBIW RT SS IIR IMON_IN IOW IOR IMON_OUT 2Ω ) 10k 8.2nF MAX 3.01k ½W 7mΩ 10Ω 1.05k 470nF 4Ω ×2 60.4k 4.7µF ´ 40.2k C IN2 2.2µF ×2 C IN4 2.2µF CC 0.82µF 10nF C IN1 33µF ×3 GATEV 21k 110k 35.7k 5.49k + – 215k 100nF 2 C ADDRESS: 0x10 10nF I 27.4V STAGE 2 (FLOAT) CHARGE VOLTAGE (V STAGE 3 DISABLED 5A CHARGING CURRENT LIMIT 2A TRICKLE CURRENT LIMIT 7.2A INPUT CURRENT LIMIT 53V MAXIMUM PANEL VOLTAGE (V NO TIMER LIMITS TEMPERATURE COMPENSATION DISABLED 202kHz SWITCHING FREQUENCY EXAMPLE SOLAR PANEL: SHARP NT-175UC1 175W 53V 196k 8.06k < SOLAR PANEL V OC 93.1k 3.24k Rev. 0 For more information www.analog.com 79 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Overview I2C Serial Interface I2C: START and STOP Conditions I2C: ACKnowledge I2C: Chip Addressing I2C: Clock Stretching I2C: Data Transfer Transactions I2C: Powering the Interface I2C Data Data: Memory Regions Data: Bytes, Words and Long Words Data: Min/Max Register Values Data: Access Permissions Startup Sequence Battery Charging Algorithm Stage 0: Trickle Charging Stage 1: Full Constant Current Stage 2: Constant Voltage Stage 3: (Optional) Reduced Constant Voltage Done Charging Charging Faults Maximum Power Point Tracking Telemetry Operation Telemetry: Configuration Settings Telemetry: Acquisition CRC Operation EEPROM Operation EEPROM: Startup EEPROM: Reading EEPROM: Writing I2C Register Map I2C Register Descriptions Telemetry Registers TELE_TBAT TELE_POUT TELE_PIN TELE_EFF TELE_IOUT TELE_IIN TELE_VBAT TELE_VIN TELE_VINR Status Registers STAT_CHARGER STAT_SYSTEM STAT_SUPPLY STAT_TSx_REMAIN STAT_CHRG_FAULTS STAT_VERSION STAT_BOOT_CRC STAT_CFG_CRC Control The EEPROM CTRL_WRT_TO_BOOT CTRL_EE_WRT_EN Control Other Functions CTRL_HALT_STARTUP CTRL_CHRG_EN CTRL_RESTART_CHIP CTRL_RESET_FLAG CTRL_UPDATE_TELEM Configure The Telemetry CFG_RSENSE1 CFG_RIMON_OUT CFG_RSENSE2 CFG_RDACO CFG_RFBOUT1 CFG_RFBOUT2 CFG_RDACI CFG_RFBIN2 CFG_RFBIN1 Configure Initial Charger Enable CFG_INIT_CHRG_EN Configure VBAT for Stages 0, 1 and 3 CFG_VS3_25C CFG_UV_S0 CFG_S0_UV CFG_S0_S1 CFG_S1_S0 Configure Temperature Fault Limits CFG_TBAT_MIN CFG_TBAT_MAX Configure Stage Timeout Limits CFG_TMR_S0 CFG_TMR_S1 CFG_TMR_S2 CFG_TMR_S3 Configure Automatic Restart CFG_RSTRT_IN_FLT CFG_RSTRT_IN_DONEA CFG_RSTRT_IN_DONEB CFG_RSTRT_IN_S3 Configure Charge Termination CFG_TERMINATE Configure Misc. CFG_SCAN_RATE_LP CFG_SCAN_RATE CFG_CHRG_MISC Configure Temperature Compensation CFG_TC3, CFG_TC2, CFG_TC1 Configure User Code CFG_USER_CODE Manufacturer Data MFR_DATA1 MFR_DATA2 MFR_DATA3 Applications Information Hardware Configuration HW Config: Input Voltage Sensing and Modulation HW Config: VINR Pin Connections HW Config: Solar Panel Powered Charging HW Config: DC Supply Powered Charging HW Config: VBAT in Stage 2 (VS2) HW Config: Input Current Sense and Limit HW Config: Output Current Sense and Limit HW Config: Current Sense Filtering HW Config: Battery Temperature and Disconnect Sensing HW Config: SHDN Pin Connections HW Config: MODE Pin – Current Conduction Mode HW Config: Driving an LED with the STATUS Pin HW Config: I2C Chip Address Pin In-Situ Battery Charging Hot-Plugging Considerations STATUS Indicator Pin Lithium-Ion Battery Charging Lead-Acid Battery Charging Optional Features Optional: Low Power Mode Optional: Output Feedback Resistor Disconnect Optional: EXTVCC Disconnect Optional: Remote Battery Voltage Sensing Optional: DC Supply Detection Circuit Board Layout Considerations Design Example Typical Applications Package Description Typical Application Related Parts