BQ24190_15 Datasheet, PDF (40/52 Pages) Texas Instruments – bq2419x I2C Controlled 4.5-A Single Cell USB/Adapter Charger with Narrow VDC Power Path Management and USB OTG

bq24190, bq24192, bq24192I
SLUSAW5B – JANUARY 2012 – REVISED DECEMBER 2014
SYS
3.4V offset
200mV/div
ISYS
5A/div
IIN
1A/div
IBAT
2A/div
2ms/div
VBUS 9 V, IIN 1.5 A, VBAT 3.8 V
Figure 46. Load Transient During Supplement Mode
SYS
3.4V offset
100mV/div
SW
5V/div
IL
1A/div
4us/div
VBUS 9 V, No Battery, ISYS 10 mA, Charge Disable
Figure 48. PFM Switching Waveform
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SW
5V/div
IL
1A/div
0
400ns/div
VBUS 12 V, VBAT 3.8 V, ICHG 3 A
Figure 47. PWM Switching Waveform
SW
5V/div
IL
1A/div
VBAT 3.8 V, ILOAD 1 A
400ns/div
Figure 49. Boost Mode Switching Waveform
VBUS
5V offset
200mV/div
IBAT
500mA/div
IVBUS
500mA/div
4ms/div
VBAT 3.8 V
Figure 50. Boost Mode Load Transient
40
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