Datasheet

Anti-
Ringing
Gate
Control
PGND
Regulator
PGND
Control Logic
Oscillator
Temperature
Control
VOUT
PGND
FB
SW
VBAT
EN
SYNC
GND
LBI
LBO
_
+
100 kW
10 pF
_
+
V
REF
= 0.5 V
GND
Error Amplifier
_
+
_
+
GND
V
REF
= 0.5 V
Low Battery Comparator
TPS61030 , TPS61031 , TPS61032
www.ti.com SLUS534G –SEPTEMBER 2002–REVISED MARCH 2015
10 Detailed Description
10.1 Overview
The TPS6103x synchronous step-up converter typically operates at a 600 kHz frequency pulse width modulation
(PWM) at moderate to heavy load currents. The converter enters Power Save mode at low load currents to
maintain a high efficiency over a wide load. The Power Save mode can also be disabled, forcing the converter to
operate at a fixed switching frequency. The TPS6103x family is based on a fixed frequency with multiple feed
forward controller topology. Input voltage, output voltage, and voltage drop on the NMOS switch are monitored
and forwarded to the regulator. The peak current of the NMOS switch is also sensed to limit the maximum
current flowing through the switch and the inductor. It can also operate synchronized to an external clock signal
that is applied to the SYNC pin. Additionally, TPS6103x integrated the low-battery detector circuit typically used
to supervise the battery voltage and to generate an error flag when the battery voltage drops below a user-set
threshold voltage.
10.2 Functional Block Diagram
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Product Folder Links: TPS61030 TPS61031 TPS61032