Typical Application; Related Parts - Analog Devices LINEAR LT8491 Manual

LT8491

TYPICAL APPLICATION

+
C
IN2
2.2µF
SOLAR
×2
PANEL
V < 53V
OC
–
C
IN1
33µF
×3
C
IN4
2.2µF
GATEV ´
CC
196k
110k
8.06k 35.7k
93.1k
1µF
3.24k 5.49k
249k
32.4k
21k
100nF
8.2nF
4.7nF
2
I C ADDRESS: 0x10
14.27V STAGE 2 (ABSORPTION) CHARGE VOLTAGE (V
13.87V STAGE 3 (FLOAT) CHARGE VOLTAGE (V
10A CHARGING CURRENT LIMIT
2.5A TRICKLE CURRENT LIMIT
7.2A INPUT CURRENT LIMIT
53V MAXIMUM PANEL VOLTAGE (V
NO TIMER LIMITS
TEMPERATURE COMPENSATION ENABLED
–20°C TO 50°C BATTERY TEMPERATURE RANGE
175kHz SWITCHING FREQUENCY
EXAMPLE SOLAR PANEL: SHARP NT-175UC1 175W

RELATED PARTS

PART NUMBER DESCRIPTION
LT8490 High Voltage, High Current Buck-Boost Battery Charger with MPPT
LT3652/LT3652HV Power Tracking 2A Battery Charger for Solar Power
LTC4000-1 High Voltage, High Current Controller for Battery Charger with MPPC
LTC4200 55V V /V
IN OUT
82
14.2V Flooded Lead-Acid Battery Charger
½W
7m
M1
C
IN3
2.2µF
×2
GATEV ´
CC
10
D
B1
3.3nF
220nF
470nF 2
TG1 BOOST1 SW1 BG1 CSP CSN
CSNIN
CSPIN
V
4 IN
GATEV
CC
INTV
CC
4.7µF
×2
MODE
SHDN
VINR
FBIR
FBIN
FBIW
1.05k
RT
SS
IIR
IMON_IN
IOW
3.01k
IOR
IMON_OUT
V SYNC CLKDET CLKOUT
C
97.6k
8.45k 53.6k
10nF 68nF
220pF
549
M1, M2: INFINEON BSC028N06NS
) AT 25°C M3, M4: INFINEON BSC042N03LSG
S2
) AT 25°C L1: 15µH COILCRAFT SER2915H-153KL,
S3
15µH WURTH 744 364 1500
D , D
B1 B2
C : 33µF, 63V, SUNCON 63HVH33M
IN1
) C , C
MAX IN2
C : 150µF, 25V SUNCON 25HVH 150M
OUT1
C , C
OUT2
C : 1µF, 25V AVX 12063C105KAT2A
OUT4
Buck-Boost Multi-Chemistry Battery Charging Controller Li-Ion and Lead-Acid Algorithms, MPPC
L1
15µH
M4
C
OUT3
10µF
M2 M3
×2
10
GATEV ´
CC
5m
D
10
B2
220nF
3.3nF
2
GND BG2 SW2 BOOST2 TG2
EXTV
CC
CSPOUT
CSNOUT
FBOR
FBOUT
FBOW
TEMPSENSE
AV
DD
LT8491
V
DD
LDO33
SRVO_IIN
SRVO_FBIN
SRVO_FBOUT
SRVO_IOUT
ECON
SWEN
SWENO
STATUS CA SDA SCL
AV AV
DD
1.3k 10k
100k 10k
DS
TO MASTER
: CENTRAL SEMI CMMR1U-02
, C : 2.2µF, 100V, AVX 12101C225KAT2A
IN3 IN4
: 10µF, 35V, MURATA GRM32ER7YA106KA2L
OUT3
COMMENTS
V Range = 6V to 80V, V
IN
V Range = 4.95V to 32V (LT3652), 4.95V to 34V (HV), MPPC
IN
V and V
IN
½W
5m V
BAT
C
OUT2
10µF
×2
C
OUT1
10
150µF
C
OUT4
1µF
470nF
274k
0.082µF
26.1k 124k
23.2k
1µF
+
–
18.2k
4.7µF
10k
AT 25°C
ß = 3380
NTC
100nF
DD
200k
2
REGISTER NAME I C REG ADDR
CFG_RSENSE1 0x28
CFG_RIMON_OUT 0x2A
CFG_RSENSE2 0x2C
CFG_RDACO 0x2E
CFG_RFBOUT1 0x30
CFG_RFBOUT2 0x32
CFG_RDACI 0x34
CFG_RFBIN2 0x36
CFG_RFBIN1 0x38
CFG_VS3_25C 0x3B
CFG_TBAT_MIN 0x40
CFG_TBAT_MAX 0x41
CFG_TMR_S0 0x42
CFG_TMR_S1 0x43
CFG_TMR_S2 0x44
CFG_TMR_S3 0x45
CFG_RSTRT_IN_S3 [0] 0x49
CFG_CHRG_MISC [2:0] 0x4D
Range = 1.3V to 80V
BAT
Range = 3V to 60V, MPPC
OUT
 ANALOG DEVICES, INC. 2020
LOAD
14.2V
FLOODED
LEAD
ACID
8491 TA03
VALUE
0x02BC → (7m )
0x2620 → (97.6k )
0x01FA → (5m )
0x3AA2 → (150.1k )
0x0AB4 → (274k )
0x0910 → (23.2k )
0x028E → (6.54k )
0x0144 → (3.24k )
0x03AE → (93.1k )
0x7A → (97.2%)
0xEC → (–20°C)
0x32 → (50°C)
0x00
0x00
0x00
0x00
1b
111b
Rev. 0
01/20
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