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TPS53114 Datasheet Preview

TPS53114 Datasheet

Single Synchronous Step-down Controller

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TPS53114
SLVS887C – APRIL 2009 – REVISED AUGUST 2014
TPS53114 Single Synchronous Step-down Controller for Low Voltage Power Rails
1 Features
1 D-CAP2™ Mode Control
– Fast Transient Response
– No External Parts Required For Loop
Compensation
– Compatible with Ceramic Output Capacitors
• High Initial Reference Accuracy (±1%)
• Low Output Ripple
• Wide Input Voltage Range: 4.5 V to 24 V
• Output Voltage Range: 0.76 V to 5.5 V
• Low-Side RDS(on) Loss-Less Current Sensing
• Adaptive Gate Drivers with Integrated Boost Diode
• Adjustable Soft Start
• Pre-Biased Soft Start
• Selectable Switching Frequency
350 kHz / 700 kHz
• Cycle-By-Cycle Over Current Limiting Control
• Thermally Compensated OCP by 4000 ppm/°C at
ITRIP
2 Applications
• Point-of-Load Regulation in Low Power Systems
for Wide Range of Applications
– Digital TV Power Supply
– Networking Home Terminal
– Digital Set Top Box (STB)
– DVD Player / Recorder
– Gaming Consoles
3 Description
The TPS53114 is a single, adaptive on-time D-
CAP2™ mode synchronous buck controller. The
TPS53114 enables system designers to complete the
suite of various end equipment's power bus
regulators with cost effective low external component
count and low standby current solution. The main
control loop for the TPS53114 uses the D-CAP2™
mode control which provides a very fast transient
response with no external components. The
TPS53114 also has a circuit that enables the device
to adapt to both low equivalent series resistance
(ESR) output capacitors such as POSCAP or SP-
CAP and ultra-low ESR ceramic capacitors. The
device provides convenient and efficient operation
with input voltages from 4.5 V to 24 V and output
voltage from 0.76 V to 5.5 V.
The TPS53114 is available in the 16-pin TSSOP and
HTSSOP packages, and is specified from –40°C to
85°C ambient temperature range.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS53114
TSSOP (16)
5.00 mm x 4.40 mm
TPS53114
HTSSOP 916) 5.00 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
4 Simplified Schematics
VIN
1 VO
VBST 16
R1 C2
TPS53114PWP
0.1uF
2 VFB
DRVH 15
R2
SGND
C7
(TSSOP16)
3 SS
SW 14
SGND
SGND
4 GND
5 CER
THERMAL
PAD
DRVL 13
PGND 12
SGND
6 FSEL
7 EN
C6
8 V5FILT
1uF
TRIP 11
R3
VREG5 10
C5 4.7uF
VIN 9
C4
Q1
L1
Q2
VIN
PGND
C3
10uFx2
VO1
C1
PGND
VI N
1 VO
R1
2 VFB
R2
SG ND
C7
3 SS
VBST 16
DRVH 15
C2
0.1uF
SW 14
S GND
SG ND
SG ND
C6
1uF
4 GND
5 CER
TPS 53114 PW
(TSSOP1 6)
6 FSEL
DRVL 13
PGND 12
TRIP 11
R3
7 EN
VREG5 10
C5 4.7uF
8 V5FILT
VIN 9
C4
Q1
L1
Q2
V IN
PG ND
C3
10uFx2
V O1
C1
PG ND
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.




etcTI

TPS53114 Datasheet Preview

TPS53114 Datasheet

Single Synchronous Step-down Controller

No Preview Available !

TPS53114
SLVS887C – APRIL 2009 – REVISED AUGUST 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Schematics........................................... 1
5 Revision History..................................................... 2
6 Pin Configurations and Functions ....................... 3
7 Specifications......................................................... 4
7.1 Absolute Maximum Ratings ...................................... 4
7.2 Handling Ratings ...................................................... 4
7.3 Recommended Operating Conditions....................... 4
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 5
7.6 Timing Requirements ................................................ 6
7.7 Switching Characteristics .......................................... 6
7.8 Typical Characteristics .............................................. 7
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ......................................... 9
8.3 Feature Description................................................... 9
8.4 Device Functional Modes........................................ 11
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 350-kHz Operation Application .............................. 12
9.3 700 kHz Operation Application ............................... 16
10 Power Supply Recommendations ..................... 18
11 Layout................................................................... 18
11.1 Layout Guidelines ................................................. 18
11.2 Layout Example .................................................... 18
12 Device and Documentation Support ................. 20
12.1 Trademarks ........................................................... 20
12.2 Electrostatic Discharge Caution ............................ 20
12.3 Glossary ................................................................ 20
13 Mechanical, Packaging, and Orderable
Information ........................................................... 20
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision B (October 2010) to Revision C
Page
• Changed the datasheet to the new TI standard format.......................................................................................................... 1
• Added Thermal PWP information .......................................................................................................................................... 5
• Changed from 4.8 V to 4.6 V. ................................................................................................................................................ 5
• Changed from 8 to 12 Ω. ....................................................................................................................................................... 5
• Added Figures 8 and 9 .......................................................................................................................................................... 8
• Added "The TPS53114 enables system designers to complete the suite of various end equipment power bus
regulators with cost effective, low external component count and low standby current solution." ........................................ 9
• Changed Equation 1............................................................................................................................................................. 11
Changes from Revision A (August 2009) to Revision B
Page
• Changed From: IOCL + To: IOCL - .......................................................................................................................................... 14
• Added minus VOCLoff.............................................................................................................................................................. 14
2 Submit Documentation Feedback
Product Folder Links: TPS53114
Copyright © 2009–2014, Texas Instruments Incorporated


Part Number TPS53114
Description Single Synchronous Step-down Controller
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