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RT9758 数据表(PDF) 53 Page - Richtek Technology Corporation

部件名 RT9758
功能描述  High Voltage Smart Cap Divider and Direct Charge Charger
PDF  61 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

RT9758 数据表(HTML) 53 Page - Richtek Technology Corporation

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RT9758
Copyright © 2023 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9758-03
May 2023
www.richtek.com
53
VBAT > 2V?
VBAT > 3V?
Yes
No
Yes
VBAT >
3.45V?
No
No
No
Yes
No
No
Yes
Input current
≤ I_TERM ?
VBAT
≥ CV
Yes
Yes
No
Switching charger in
trickle charge mode
Switching charger in
pre-charge mode
Switching charger in
fast-cahrge mode
Boot to kernel
Start other charging
algorithms
1. Set protections of RT9758 for DIV2 mode
2. Measure initial input current by switching charger
3. Disable switching charger
4. Set protections of RT9759
Calculate the resistance of the charging path
Increase input current according to VBAT
’s level and
set adapter/wireless power to CAL_V
No
Yes
No
Yes
Adapter plug in or
Wireless Power in
Adapter supports PD PPS
charging (20V Prog) or Wireless
Power supports HV charging?
1. Set input voltage/current limit to desired value
2.Enable RT9758_M
3. Set input voltage to CAL_V
4. Enable RT9759_M to start charging
5. Keep monitoring VBAT
Reach desired
charging level?
Yes
Input power allows both
of RT9758 to charge?
1. Set protection of RT9758 and RT9759 to parallel application
2. Disable RT9758_M and RT9759_M
3. Enable RT9758_S
4. Enable RT9758_M
5. Enable RT9759_S
6. Enable RT9759_M
Decrease input current and
set adapter/wireless power to CAL_V
RT9758_S is
enabled?
1. Disable RT9759_S
2. Disable RT9758_S
3. Disable RT9759_M
4. Disable RT9758_M
5. Set RT9758 protection for BYPASS mode
Terms :
CAL_V :
Voltage of input which is calculated according to requested
Input current, VBAT and resistance of the charging path.
I_TERM :
If Input current level is smaller than this value, terminate this
charging algorithm.
Wait for 10 seconds or
RT9759 VBAT_ALM
interrupt triggered
Figure 14. System Control Flow Chart with Parallel Charge System



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