TPS55340-EP_15 Datasheet, PDF (1/38 Pages) Texas Instruments – TPS55340-EP Integrated 5-A, 40-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator

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TPS55340-EP Integrated 5-A, 40-V Wide Input Range
Boost/SEPIC/Flyback DC-DC Regulator
TPS55340-EP
SLVSCG7 – JULY 2014
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
• Supports Defense, Aerospace, and Medical
Applications
– Controlled Baseline
– One Assembly and Test Site
– One Fabrication Site
– Available in Military (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability
2 Applications
• 3.3-V, 5-V, 12-V, 24-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 TPS55340-EP is a monolithic, non-synchronous
switching regulator with integrated 5-A, 40-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-, 5-,
12-, and 24-V power rails.
The TPS55340-EP regulates the output voltage with
current mode pulse width modulation (PWM) 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.
Device Information⁽¹⁾
ORDER NUMBER
PACKAGE
BODY SIZE (NOM)
TPS55340MRTETEP WQFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Typical Application (Boost)
VIN
L
D
VOUT
RFREQ
CSS
CI
RC
CC
TPS55340
VIN
SW
EN
SW
FREQ
SW
SS
FB
COMP PGND
SYNC PGND
AGND PGND
CO
RSH
RSL
1
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
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.