Texas Instruments BQ24190EVM Evaluation Module (D+D- Protection) BQ24190EVM-021 BQ24190EVM-021 데이터 시트
제품 코드
BQ24190EVM-021
Boost Mode: Vbat = 3.7 V
Vsw
Vprnid_AC coupled
C2
C1
Test Summary
2.3.2.6
Switch to Boost Mode
1. Turn off and disconnect PS#1
2. If the constant voltage load connected from BAT+ to GND is not a four-quadrant supply (sources
current) remove the load and use the power source disconnected in step one, set to 3.7 V and 2 A
current limit and connect between BAT+ and GND
current limit and connect between BAT+ and GND
3. Apply 10
Ω (5 W or greater) across J5 (PMID(+) to GND(–)
4. Uncheck the OTG Low box in the GUI
5. Select OTG in the Configuration drop-down window
6. Verify V
PMID
to GND on J5 is between 4.9 V and 5.3 V
7. Verify scope measurement (See Figure 6)
C1 (AC coupled 20 mV/div): Vac_PMID (TP20 to GND) – Ripple excluding high frequency spikes
C2 (5 V/div): Vdc_SW (TP2) - Frequency between 1.2 MHz and 1.7 MHz, Duty cycle between 67%
and 74%
C2 (5 V/div): Vdc_SW (TP2) - Frequency between 1.2 MHz and 1.7 MHz, Duty cycle between 67%
and 74%
Figure 5. Boost Mode Ripple and Duty Cycle; V
BAT
= 3.7 V
2.3.2.7
Verify Device ID JEITA shown in software matches
Table 5. Device ID JEITA Settings
Assembly Number
EVM Part Number
Device ID
JEITA
PWR021-001
bq24190EVM-021
100
Disabled
PWR021-003
bq24192EVM-021
101
Disabled
PWR021-004
bq24192iEVM-021
011
Disabled
PWR021-005
bq24193EVM-021
101
Enabled
PWR021-006
bq24196EVM-021
101
Disabled
PWR021-007
bq24292iEVM-021
011
Disabled
9
SLUUA14C – October 2012 – Revised August 2013
bq24190/2/2i/3/6 and bq24292i EVM (PWR021) User's Guide
Copyright © 2012–2013, Texas Instruments Incorporated