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XR79106

更新时间： 2024-02-22 11:01:55
品牌 Logo 应用领域
艾科嘉 - EXAR /
页数 文件大小 规格书
19页 2295K
描述
22V, 6A Synchronous Step-Down

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XR79106 数据手册

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XR79106  
22V, 6A Synchronous Step-Down  
COT Power Module  
Description  
FEATURES  
The XR79106 is part of a family of 22V synchronous step-down  
power modules combining the controller, drivers, inductor, passive  
components and MOSFETs in a single package for point-of-load  
supplies. This module requires very few external components leading  
to ease of design and fast time to market. The XR79106 has load  
current rating of 6A. A wide 4.5V to 22V input voltage range allows  
for single supply operation from industry standard 5V, 12V and  
19.6V rails.  
ꢀ■  
ꢀ■  
ꢀ■  
6A step-down power module  
4.5V to 22V wide single input voltage  
≥0.6V adjustable output voltage  
Controller, drivers, inductor, passive  
components and MOSFETs integrated in  
one package  
Proprietary constant on-time control  
No loop compensation required  
Stable with ceramic output capacitors  
Programmable 100ns to1µs on-time  
Constant 600kHz to 800kHz frequency  
Selectable CCM or DCM/CCM  
operation  
With a proprietary emulated current mode Constant On-Time (COT)  
control scheme, the XR79106 provides extremely fast line and load  
transient response using ceramic output capacitors. It requires no  
loop compensation, simplifying circuit implementation and reducing  
overall component count. The control loop also provides 0.2% load  
and 0.2% line regulation and maintains constant operating frequency.  
A selectable power saving mode, allows the user to operate in  
Discontinuous Current Mode (DCM) at light current loads significantly  
increasing the converter efficiency.  
ꢀ■  
ꢀ■  
ꢀ■  
Precision enable and power-good flag  
Programmable soft-start  
8mm x 8mm x 4mm QFN package  
APPLICATIONS  
ꢀ■  
FPGA, DSP and processor supplies  
Distributed power architecture  
Point-of-load converters  
Power supply modules  
Base stations  
ꢀ■  
A host of protection features, including overcurrent, over temperature,  
short-circuit and UVLO, helps achieve safe operation under abnormal  
operating conditions.  
ꢀ■  
ꢀ■  
ꢀ■  
ꢀ■  
ꢀ■  
Switches and routers  
Servers  
The XR79106 is available in a RoHS-compliant, green/halogen-free  
space-saving 8mm x 8mm x 4mm QFN package.  
Typical Application  
100  
95  
90  
85  
80  
75  
70  
65  
V
IN  
800kHz  
VIN  
PVIN  
ENABLE/MODE  
EN/MODE  
PGOOD  
VCC  
V
POWER GOOD  
OUT  
VOUT  
SW  
C
IN  
XR79106  
R
600kHz  
PGOOD  
R
LIM  
SS  
ILIM  
FB  
5.0V  
3.3V  
2.5V  
1.8V  
1.5V  
1.2V  
1.0V  
R
R
FB1  
C
OUT  
TON  
AGND  
PGND  
C
C
R
VCC  
SS  
ON  
FB2  
0
1
2
3
4
5
6
I
(A)  
OUT  
Figure 1. Typical Application  
Figure 2. Efficiency, 12V  
IN  
REV1B  
1/19  
1234567...19

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