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TPS54295PWPR
4.5V to 18V Input, Dual 2A Output, Synchronous Step-Down Converter
V = 1.5 V (50 mV/div)O2
Iout (1 A/div)
t - Time - 100 s/divm
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TPS54295SLVSB01D –OCTOBER 2011–REVISED AUGUST 2016
TPS54295 2-A Dual Channel Synchronous Step-Down Switcher With Integrated FET Features D-CAP2™ Control Mode Fast Transient Response No External Parts Required For Loop
Compensation Compatible With Ceramic Output Capacitors Wide Input Voltage Range: 4.5Vto 18V Output Voltage Range: 0.76Vto7V Highly Efficient Integrated FETs Optimizedfor
Low Duty Cycle Applications 150 mΩ (High-Side) and 100 mΩ (Low-Side) High Initial Reference Accuracy Low-Side rDS(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 Dueto Thermally Compensated
rDS(ON) With 4000 ppm/℃ 16-Pin HTSSOP, 16-pin VQFN Auto-Skip Eco-mode™ for High Efficiencyat Light
Load
Applications Point-of-Load Regulationin Low Power Systems
for Wide Rangeof Applications Digital TV Power Supplies Networking Home Terminals Digital Set Top Boxes (STB) DVD Players and Recorders and Other
DescriptionThe TPS54295isa dual, adaptive on-time D-CAP2
mode synchronous buck converter. The TPS54295
enables system designersto complete the suiteof
various end-equipment power bus regulators witha
cost effective, low component count, and low standby
current solution. The main control loops of the
TPS54295 use the D-CAP2 mode control which
providesa very fast transient response with no
external compensation components. The adaptive on-
time control supports seamless transition between
PWM modeat higher load conditions and Eco-mode
operation at light loads. Eco-mode allows the
TPS54295to maintain high efficiency during lighter
load conditions. The TPS54295is ableto adaptto
both low equivalent series resistance (ESR) output
capacitors such as POSCAPor SP-CAP, and ultra-
low ESR ceramic capacitors. The device provides
convenient and efficient operation with input voltages
from 4.5Vto18V.
The TPS54295is availableina 4.4 mm×5 mm 16-
pin HTSSOP (PWP) package and4 mmx4 mm 16-
pin VQFN (RSA) package, designedto operateat an
ambient temperature range from –40°Cto 85°C.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Load Transient Response
