TPS55340_15 Datasheet, PDF (1/41 Pages) Texas Instruments – TPS55340 Integrated 5-A Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator

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TPS55340
SLVSBD4C – MAY 2012 – REVISED JANUARY 2015
TPS55340 Integrated 5-A Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator
1 Features
•1 Internal 5-A, 40-V Low-Side MOSFET Switch
• 2.9-V to 32-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) and HTSSOP-14
Packages With PowerPAD™
• Wide –40°C to 150°C Operating T_J Range
2 Applications
• 3.3-V, 5-V, 12-V, 24-V Power Conversion
• Boost, SEPIC, and Flyback Topologies
• Thunderbolt Port, USB Type-C Power Delivery,
Power Docking for Tablets and Portable PCs
• Industrial Power Systems
• ADSL Modems
3 Description
The TPS55340 is a monolithic, nonsynchronous,
switching regulator with integrated 5-A, 40-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, 12-V, and 24-V power rails.
The TPS55340 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 TPS55340 is available in a small 3-mm × 3-mm
16-pin QFN as well as 14-pin HTSSOP packages
with PowerPAD for enhanced thermal performance.
The 5-A, 40-V TPS55340 boost converter in the
HTSSOP-14 package is pin-to-pin compatible with
the 3-A, 40-V TPS61175 and it extends the maximum
input voltage from 18 V to 32 V.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS55340
HTSSOP (14)
WQFN (16)
5.00 mm × 4.40 mm
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
TPS55340
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
65
60
55
50
0
V_OUT = 24 V
f_SW = 600 kHz
V_IN = 15 V
V_IN = 12 V
V_IN = 5 V
0.4
0.8
1.2
1.6
2
2.4
Output Current (A)
G031
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.