TPS53114_15 Datasheet, PDF (1/30 Pages) Texas Instruments – TPS53114 Single Synchronous Step-down Controller for Low Voltage Power Rails

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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 R_DS(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
I_TRIP
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
DRVL 13
5 CER
TPS 53114 PW
(TSSOP1 6)
PGND 12
6 FSEL
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.