TPS55330_15 Datasheet, PDF (1/32 Pages) Texas Instruments – TPS55330 Integrated 5-A, 24-V Boost/SEPIC/Flyback DC-DC Regulator

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TPS55330
SLVSBX8A – MAY 2013 – REVISED DECEMBER 2014
TPS55330 Integrated 5-A, 24-V Boost/SEPIC/Flyback DC-DC Regulator
1 Features
•1 Internal 5-A, 24-V Low-Side MOSFET Switch
• 2.9-V to 16-V Input Voltage Range
• ±0.7% Reference Voltage
• 0.5-mA Operating Quiescent Current
• 2.7-µA Shutdown Supply Current
• Fixed-Frequency-Current-Mode PWM Control
• Frequency Adjustable From 100 kHz to 1.2 MHz
• Synchronization Capability to External Clock
• Adjustable Soft-Start Time
• Pulse-Skipping for Higher Efficiency at Light
Loads
• Cycle-by-Cycle Current Limit, Thermal Shutdown,
and UVLO Protection
• QFN-16 (3 mm × 3 mm) With PowerPAD™
• Wide –40°C to +150°C Operating T_J Range
2 Applications
• 3.3-V, 5-V, 12-V Power Conversion
• Boost, SEPIC, and Flyback Topologies
• Thunderbolt Port, Power Docking for Tablets and
Portable PCs
• Industrial Power Systems
• ADSL Modems
3 Description
The TPS55330 is a monolithic nonsynchronous
switching regulator with integrated 5-A, 24-V power
switch. The device can be configured in several
standard switching-regulator topologies, including
boost, SEPIC, and isolated flyback. The device has a
wide input voltage range to support applications with
input voltage from multicell batteries or regulated 3.3-
V, 5-V, and 12-V power rails.
The TPS55330 regulates the output voltage with
current mode PWM (pulse width modulation) control,
and has an internal oscillator. The switching
frequency of PWM is set by either an external resistor
or by synchronizing to an external clock signal. The
user can program the switching frequency from
100 kHz to 1.2 MHz.
The device features a programmable soft-start
function to limit inrush current during start up and has
other built-in protection features including cycle-by-
cycle overcurrent limit and thermal shutdown.
The TPS55330 is available in a small 3-mm × 3-mm
16-pin QFN with PowerPAD for enhanced thermal
performance.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
TPS55330
WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application (Boost)
VIN
L
D
RFREQ
CSS
CI
RC
CC
TPS55330
VIN
SW
EN
SW
FREQ
SW
SS
FB
COMP PGND
SYNC PGND
AGND PGND
RSH
RSL
VOUT
CO
Efficiency vs Output Current
100
95
90
85
80
75
70
f_SW = 600 kHz
V_OUT = 5 V
65
60
V_IN = 2.9 V
55
V_IN = 3.6 V
V_IN = 4.2 V
50
0
0.5
1
1.5
2
2.5
3
Output Current (A)
G017
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.