參數(shù)資料
型號(hào)： CS5127
廠商： ZF Electronics Corporation
英文描述： Dual Output Nonsynchronous Buck Controller with Sync Function and Second Channel Enable
中文描述： 非同步雙輸出同步降壓控制器的功能及第二通道啟用
文件頁(yè)數(shù)： 15/24頁(yè)
文件大?。?/td> 293K
代理商： CS5127
ENABLE 1
SIGNAL
5V
R2
1k
R1
6.3K
Q4
FMMT2222ACT
Q2
FMMT2907ACT
Q3
FMMT2907ACT
Q1
FMMT2907ACT
R3
1K
TO V
FFB1
TO COMP1
15
5V
V
OUT
OVP OUT
R1
24K
R2
5K
R4
10K
R3
10K
Q1
FMMT2222ACT
Q2
FMMT2907ACT
V
OUT
5V
PGOOD OUT
R3
10K
Q1
FMMT2222ACT
R1
18K
R2
5K
Q2
FMMT2222ACT
Figure 12: Example external over voltage protection circuit. If V
OUT
exceeds V
OVP
, OVP out goes high. Resistor values shown above pro-
vide a +10% tolerance for a 3.3V output.
Figure 13: Example external Power GOOD circuit. P
GOOD(OUT)
is low
until V
OUT
exceeds V
PGOOD
. V
PGOOD
is typically chosen to be 10%
below nominal V
OUT
. Resistor values above provide a -10% tolerance
on V
OUT
=3.3V.
Figure 14: An external circuit can be built to provide an enable func-
tion for channel 1. The circuit shown above connects to the V
FB1
and
COMP1 pins as indicated. If the ENABLE1 signal is left floating or is
pulled high, channel 1 is enabled. If the ENABLE1 pin is pulled
below 1V, Q1 will conduct, and mirror Q3 pulls V
FFB1
up at the same
time as Q2 and Q4 pull COMP1 low. This will force GATE1 to go low
and turn off the switch FET. The circuit above will provide about
1mA of additional drive to the V
FFB1
pin components. This additional
current must be sufficient to pull V
FFB1
up to about 1V in order to
guarantee GATE1 is held low.
Additional Application Circuits
V
OVP
=
(R1 + R2)(0.65V)
R2
V
PGOOD
=
(R1 + R2)(0.65V)
R2
C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CS-5127 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual Output Non-Synchronous Buck Controller with Sync Function and Secon
CS-5127DW16 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
CS-5127DWR16 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller
CS5127GDW16 制造商:Rochester Electronics LLC 功能描述:- Bulk
CS5127GDWR16 制造商:Rochester Electronics LLC 功能描述:- Bulk
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