TPS55330 Datasheet, PDF (1/27 Pages) Texas Instruments – Integrated 5-A 24-V Boost/SEPIC/Flyback DC-DC Regulator

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TPS55330
SLVSBX8 – MAY 2013
Integrated 5-A 24-V Boost/SEPIC/Flyback DC-DC Regulator
Check for Samples: TPS55330
FEATURES
1
•2 Internal 5-A, 24-V Low-Side MOSFET Switch
• 2.9-V to 16-V Input Voltage Range
• ±0.7% Reference Voltage
• 0.5mA Operating Quiescent Current
• 2.7µA Shutdown Supply Current
• Fixed Frequency Current Mode PWM Control
• Frequency Adjustable from 100kHz to 1.2MHz
• 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 (3mmx3mm) with PowerPad™
• Wide –40°C to 150°C Operating T_J Range
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
DESCRIPTION
The TPS55330 is a monolithic non-synchronous
switching regulator with integrated 5-A, 24-V power
switch. It 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 multi-cell 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 over current limit and thermal shutdown.
The TPS55330 is available in a small 3mm x 3mm
16-pin QFN with PowerPad™ for enhanced thermal
performance.
TYPICAL APPLICATION (BOOST)
VIN
L
D
VOUT
RFREQ
CSS
CI
RC
CC
TPS55330
VIN
SW
EN
SW
FREQ
SW
SS
FB
COMP PGND
SYNC PGND
AGND PGND
CO
RSH
RSL
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
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPad is a trademark of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated