Texas Instruments BQ24196EVM Evaluation Module (2.5 A Maximum Charge Current) BQ24196EVM-021 BQ24196EVM-021 데이터 시트
제품 코드
BQ24196EVM-021
CHG Mode: VBUS = 5 V VBAT = 3.7 V
Vsw
Vsys_AC coupled
Vprnid_AC coupled
C2
C1
C3
Test Summary
2.3.2.3
Increase the Constant Voltage Load to 3.7 V
DC
Measure
→ V(J2(SYS), J2(GND)) = 3.75 V ±200 mV
Measure
→ IBAT = 500 mA ±200 mA
Measure
→ V(J2(BAT), J2(GND)) = 3.7 V ±200 mV
2.3.2.4
In the software, set Fast Charge Current, ICHG to 1.012 A
Measure
→ Iin = 500 mA ±200 mA
2.3.2.5
Verify Scope Measurements (See
– 500 ns/div)
C1 (AC coupled 20 mV/div): Vac_PMID (TP20 to GND) – Ripple excluding high frequency spikes < 10 mV
C2 (5 V/div): Vdc_SW (TP2) - Frequency between 1.25 MHz and 1.5 MHz, duty cycle between 73% and
81%
81%
C3 (AC coupled 20 mV/div): Vac_VSYS (TP3 to GND) - excluding high frequency spikes < 15 mV
Figure 4. CHG Mode Ripple and Duty Cycle: V
BUS
= 5 V, V
BAT
= 3.7 V
8
bq24190/2/2i/3/6 and bq24292i EVM (PWR021) User's Guide
SLUUA14C – October 2012 – Revised August 2013
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