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TI’s DCS-Control™ topology (Direct Control with Seamless Transition into Power Save Mode) is an advanced architecture that
combines the advantages of hysteretic and voltage mode control. The DCS-Control provides:
• High output-voltage accuracy throughout a seamless transition between PWM to Power Save Mode provided by a single
building block
• Minimized interference with RF or other noise-sensitive circuits achieved by excellent DC-voltage and load-transient regulation,
combined with low output voltage ripple
• Works with small (footprint and BOM count) and cost-competitive external components like low-ESR capacitors
• A robust design that tolerates large effective output capacitance
• Highest accuracy and smallest solution size combined with lowest quiescent current in versions with fixed output voltage
TI Power Solutions
DC/DC Converters with DCS-Control
™
Topology
2Q 2016www.ti.com/dcs-control
DCS-Control™ topology provides fast AC-line and load-transient
regulation, ensuring high DC accuracy with a single building block.
The DCS-Control
™
topology provides a seamless transition between
PWM and power-save modes with very low output-voltage ripple.
Time (100 µs/div)
I
LOAD
(500 mA/div)
Load Transient
V
OUT
(100 mV/div)
Time (200 µs/div)
I
LOAD
(500 mA/div)
Sine Wave
Load
V
OUT
(50 mV/div)
Other features supported on DCS-Control
™
topology
devices are:
• Adjustable soft start or tracking/sequencing
• Pin-selectable output voltage (margining)
• Pin-selectable switching frequency
• Power Good indicator
• Integrated bypass or load switch
• I
2
C interface for dynamic voltage scaling
• Differential Remote Sense
• Extended UVLO hysteresis
• Adjustable ENABLE threshold and hysteresis
• Start-up into prebiased load
• HICCUP overcurrent protection
• Output-capacitor discharge
• 100% duty cycle
Comparator
DCS-Control
™
Direct Control
&
Compensation
Timer t
ON
Error
Amplifier
Ramp
FB
VOS (V
OUT
)
+
-
Functional block diagram of the DCS-Control
™
topology.
Verzeichnis
- ・ Blockdiagramm on Seite 1
- ・ Anwendungsbereich on Seite 6 Seite 7
