Texas Instruments Evaluation Module for TPS54528 TPS54528EVM-052 TPS54528EVM-052 数据表
产品代码
TPS54528EVM-052
t - Time - 100
s/div
m
Vout (50 mV/div)
Iout (2 A/div)
TPS54528
SLVSAY4C – JULY 2011 – REVISED MARCH 2014
TPS54528 4.5-V To 18-V Input, 5-A Synchronous Step-Down Converter With Eco-Mode™
1 Features
3 Description
The TPS54528 is an adaptive on-time D-CAP2™
1
•
D-CAP2™ Mode Enables Fast Transient
mode synchronous buck converter. The TPS54528
Response
enables system designers to complete the suite of
•
Low Output Ripple and Allows Ceramic Output
various end-equipment power bus regulators with a
Capacitor
cost effective, low component count, low standby
current solution. The main control loop for the
current solution. The main control loop for the
•
Wide V
IN
Input Voltage Range: 4.5 V to 18 V
TPS54528 uses the D-CAP2™ mode control that
•
Output Voltage Range: 0.76 V to 6 V
provides a fast transient response with no external
•
Highly Efficient Integrated FETs Optimized
compensation components. The adaptive on-time
for Lower Duty Cycle Applications
control supports seamless transition between PWM
– 65 m
Ω (High Side) and 36 mΩ (Low Side)
mode at higher load conditions and Eco-mode™
operation at light loads. Eco-mode™ allows the
operation at light loads. Eco-mode™ allows the
•
High Efficiency, less than 10
μA at shutdown
TPS54528 to maintain high efficiency during lighter
•
High Initial Bandgap Reference Accuracy
load conditions. The TPS54528 also has a proprietary
•
Adjustable Soft Start
circuit that enables the device to adopt to both low
•
Pre-Biased Soft Start
equivalent series resistance (ESR) output capacitors,
such as POSCAP or SP-CAP, and ultra-low ESR
such as POSCAP or SP-CAP, and ultra-low ESR
•
650-kHz Switching Frequency (f
SW
)
ceramic capacitors. The device operates from 4.5-V
•
Cycle By Cycle Over Current Limit
to 18-V VIN input. The output voltage can be
•
Auto-Skip Eco-mode™ for High Efficiency at Light
programmed between 0.76 V and 6 V. The device
Load
also features an adjustable soft start time. The
TPS54528
TPS54528
is
available
in
the
8-terminal
DDA
package, and designed to operate from –40°C to
2 Applications
85°C.
•
Wide Range of Applications for Low Voltage
System
System
Device Information
–
Digital TV Power Supply
ORDER NUMBER
PACKAGE
BODY SIZE
–
High Definition Blu-ray Disc™ Players
TPS54528DDA
HSOP (8)
4,89 mm × 3,9 mm
–
Networking Home Terminal
–
Digital Set Top Box (STB)
4 Simplified Schematic
1.05-V, Load Transient Response
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.
intellectual property matters and other important disclaimers. PRODUCTION DATA.