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TPS62162DSGR 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
WSON-8
描述:
3V- 17V 1A降压型转换器， DCS- ControlTM 3V-17V 1A Step-Down Converters with DCS-ControlTM
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P1P11P12
原理图在P1P7P8
封装尺寸在P26P28P29
标记信息在P26P27
封装信息在P25P26P27P28P29
技术参数、封装参数在P4
应用领域在P1P35
电气规格在P5P8P9
导航目录
TPS62162DSGR数据手册
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control logic
Soft
start
Thermal
Shtdwn
UVLO PG control
power
control
error
amplifier
gate
drive
HS lim
LS lim
VINPG
PGND
AGND
comp
comp
+
_
timer t
ON
DCS - Control
TM
direct control
&
compensation
comparator
ramp
SW
EN
*
VOS
FB
*
This pin is connected to a pull down resistor internally
(see Detailed Description section).
TPS62160
,
TPS62161
,
TPS62162
,
TPS62163
www.ti.com
SLVSAM2D –NOVEMBER 2011–REVISED NOVEMBER 2015
8 Detailed Description
8.1 Overview
The TPS6216x synchronous step-down DC/DC converters are based on DCS-Control™ (Direct Control with
Seamless transition into power save mode), an advanced regulation topology, that combines the advantages of
hysteretic, voltage mode and current mode control including an AC loop directly associated to the output voltage.
This control loop takes information about output voltage changes and feeds it directly to a fast comparator stage.
It sets the switching frequency, which is constant for steady state operating conditions, and provides immediate
response to dynamic load changes. To get accurate DC load regulation, a voltage feedback loop is used. The
internally compensated regulation network achieves fast and stable operation with small external components
and low ESR capacitors.
The DCS-Control
TM
topology supports pulse width modulation (PWM) mode for medium and heavy load
conditions and a power save mode at light loads. During PWM mode, it operates at its nominal switching
frequency in continuous conduction mode. This frequency is typically about 2.25 MHz with a controlled frequency
variation depending on the input voltage. If the load current decreases, the converter enters power save mode to
sustain high efficiency down to very light loads. In power save mode, the switching frequency decreases linearly
with the load current. Since DCS-Control
TM
supports both operation modes within one single building block, the
transition from PWM to power save mode is seamless without effects on the output voltage.
Fixed output voltage versions provide smallest solution size and lowest current consumption, requiring only 3
external components. An internal current limit supports nominal output currents of up to 1 A.
The TPS6216x family offers both excellent DC voltage and superior load transient regulation, combined with very
low output voltage ripple, minimizing interference with RF circuits.
8.2 Functional Block Diagrams
Figure 5. TPS62160 (Adjustable Output Voltage)
Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 7
Product Folder Links: TPS62160 TPS62161 TPS62162 TPS62163
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