Datasheet

Disable boost
-----------------
CH_EN[1:0] = 00
BST32SI =1
Reset and start
32min timer
32s timer
expired?
CH_EN[1:0]
= 10?
YES
YES
32m timer
expired?
NO
NO
CH_EN[1: 0] != 00
Disable charger
-----------------
CH_EN[1:0] = 00
CH32MI = 1
YES
CHSTAT[ 2:0] = 010?
(Charge done)
NO
Any I2C
action?
NO
YES
NOYES
DISABLED Any stateCH_EN[1:0] = 00
TPS65200
SLVSA48 APRIL 2010
www.ti.com
Figure 54. Timer Flow Chart for TPS65200 Charger
Input Voltage Protection in Charge Mode
Input Over-Voltage Protection (VBUSOVPI)
The TPS65200 provides a built-in input over-voltage protection to protect the device and other components
against damage if the input voltage (voltage from VBUS to PGND) gets too high. When an input over-voltage
condition is detected, the TPS65200 turns off the PWM converter, sets the VBUSOVPI bit in the INT1 register
and issues an interrupt. Once V
VBUS
drops below the input over-voltage exit threshold, the fault is cleared and
charge process resumes.
Reverse Current Protection (CHRVPI)
The TPS65200 charger enters HiZ state if the voltage on VBUS pin falls below V
CSOUT
+ V
REV
, and V
BUS
is still
higher than the poor source detection threshold, V
IN(MIN)
. The CHRVPI bit is set in the INT2 register and an
interrupt is issued. This feature prevents draining the battery during the absence of V
BUS
. In HiZ mode, both the
reverse blocking switch Q1 and PWM are turned off.
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Product Folder Link(s): TPS65200