TPS54295_16 Datasheet, PDF (1/34 Pages) Texas Instruments – TPS54295 2-A Dual Channel Synchronous Step-Down Switcher With Integrated FET

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TPS54295
SLVSB01D – OCTOBER 2011 – REVISED AUGUST 2016
TPS54295 2-A Dual Channel Synchronous Step-Down Switcher With Integrated FET
1 Features
•1 D-CAP2™ Control Mode
– Fast Transient Response
– No External Parts Required For Loop
Compensation
– Compatible With Ceramic Output Capacitors
• Wide Input Voltage Range : 4.5 V to 18 V
• Output Voltage Range : 0.76 V to 7 V
• Highly Efficient Integrated FETs Optimized for
Low Duty Cycle Applications
– 150 mΩ (High-Side) and 100 mΩ (Low-Side)
• High Initial Reference Accuracy
• Low-Side r_DS(ON) Lossless Current Sensing
• Adjustable Soft Start
• Non-Sinking Prebiased Soft Start
• 700-kHz Switching Frequency
• Cycle-by-Cycle Overcurrent Limit Control
• OCL, OVP, UVP, UVLO, and TSD Protections
• Adaptive Gate Drivers With Integrated Boost
PMOS Switch
• OCP Constant Due to Thermally Compensated
r_DS(ON) With 4000 ppm/℃
• 16-Pin HTSSOP, 16-pin VQFN
• Auto-Skip Eco-mode™ for High Efficiency at Light
Load
2 Applications
• Point-of-Load Regulation in Low Power Systems
for Wide Range of Applications
– Digital TV Power Supplies
– Networking Home Terminals
– Digital Set Top Boxes (STB)
– DVD Players and Recorders
– Gaming Consoles and Other
3 Description
The TPS54295 is a dual, adaptive on-time D-CAP2
mode synchronous buck converter. The TPS54295
enables system designers to complete the suite of
various end-equipment power bus regulators with a
cost effective, low component count, and low standby
current solution. The main control loops of the
TPS54295 use the D-CAP2 mode control which
provides a very fast transient response with no
external compensation components. The adaptive on-
time control supports seamless transition between
PWM mode at higher load conditions and Eco-mode
operation at light loads. Eco-mode allows the
TPS54295 to maintain high efficiency during lighter
load conditions. The TPS54295 is able 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 18 V.
The TPS54295 is available in a 4.4 mm × 5 mm 16-
pin HTSSOP (PWP) package and 4 mm x 4 mm 16-
pin VQFN (RSA) package, designed to operate at an
ambient temperature range from –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS54295
HTSSOP (16)
VQFN (16)
5.00 mm × 4.40 mm
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Load Transient Response
V_O2 = 1.5 V (50 mV/div)
Iout (1 A/div)
t - Time - 100 ms/div
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.