BQ24296_15 Datasheet, PDF (44/55 Pages) Texas Instruments – bq2429x I2C Controlled 3-A Single Cell USB Charger With Narrow VDC Power Path Management and Adjustable Voltage USB OTG

bq24296, bq24297
SLUSBP6B – SEPTEMBER 2013 – REVISED NOVEMBER 2014
SYS3p7
100mV/div
SYS3p5
500mV/div
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SW
2V/div
IL
1A/div
4ms/div
VBUS = 5 V, VBAT = 3.6 V, ICHG = 2.5 A
ISYS
2A/div
IVBUS
2A/div
2ms/div
VBUS = 5 V, IIN = 3 A, No Battery, Charge Disable
Figure 48. PFM Switching in Buck Mode
SYS3p8
500mV/div
ISYS
2A/div
IBAT
2A/div
IVBUS
2A/div
20ms/div
VBUS = 5 V, IIN = 1.5 A, VBAT = 3.8 V
Figure 49. Input Current DPM Response without Battery
SW
2V/div
IL
1A/div
400ns/div
VBAT = 3.8 V, ILOAD = 1 A
Figure 50. Load Transient During Supplement Mode
VBUS
200mV/div
IBAT
1A/div
Figure 51. Boost Mode Switching
IVBUS
1A/div
4ms/div
VBAT = 3.8 V
Figure 52. Boost Mode Load Transient
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