ISL9241 Operation Modes
Abstract
The
ISL9241
is a Buck-Boost battery charger that supports Narrow Voltage Direct Charging (NVDC) and Hybrid
Power Buck-Boost (HPBB/Bypass) operation modes. It also has special features such as Supplemental mode
(Intel Vmin Active Protection), USB On-the-Go (OTG), and USB PD operation modes (by operating the charger in
reverse direction). All modes are configurable by firmware. This document explains how to configure the ISL9241
to operate and transition between the different modes through SMBus and I
Contents
1.
ISL9241 Operation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1
1.1.1
NVDC Turbo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
1.3
1.4
Battery Only Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5
2.
2.1
2.2
2.3
2.4
Adapter Removal Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5
Calculating Wait Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.5.1
2.5.2
2.5.3
3.
Transitioning to OTG Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.
4.1
Entering Supplemental Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2
4.3
5.
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
R16AN0002EU0300 Rev.3.00
Jan 6, 2022
Application Note
2
C communication.
© 2018 Renesas Electronics
Page 1
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