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參數資料
| 型號： | L6611 |
| 廠商： | 意法半導體 |
| 英文描述： | DIGITALLY PROGRAMMABLE SECONDARY HOUSEKEEPING CONTROLLER |
| 中文描述： | 數字可編程控制器二次內務管理 |
| 文件頁數： | 23/28頁 |
| 文件大?。?/td> | 609K |
| 代理商： | L6611 |
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L6611
threshold separately by properly choosing the resistors of the external divider. The following relationships can
be established for the ON (VB
(ON)
) and OFF (VB
(OFF)
) thresholds of the input voltage:
which, solved for R1 and R2, yields:
Both the ACsns threshold and the hysteresis current can be trimmed (see "On board trimming and mode oper-
ating" section).
Figure 21. ACsns circuit and timing diagram
6
In applications like desktop PC's, server or web server, the system usually consists of two converters (Main and
Auxiliary) that can be supplied directly from either the AC Mains or a PFC stage. The control and supervision at
the secondary side is usually entrusted to a housekeeping circuit.
The Auxiliary section supplies a stand-by voltage (5V typ.) through a flyback converter. The Main section, in
forward configuration, presents 4 standard outputs (3.3V, +5V, ±12V).
At the secondary side, the housekeeping circuitry governed by the L6611 checks the outputs and sends control
signals to the primary side through three optocouplers. It also generates power good information to the system
while managing all timings during power-up and power-down sequences. In fig. 22 a detailed circuit for the sec-
ondary side is presented; it is possible to note the very low number of external components required.
Simply connecting the power supply outputs to the L6611 relevant pins ensures the protection against over/un-
dervoltage in the Main section.
A crowbar on the auxiliary output is switched on through DFAULT in case of overvoltage.
The L6611 is supplied by the Auxiliary output; the signals sent to the primary side are:
– a "digital" ON/OFF signal through an optocoupler that drives the relevant pin of primary Main controller
to switch the Main converter ON and OFF;
– two analog signals that provide voltage feedback for both the Auxiliary and the Main section, driving the
primary controller pins responsible for the duty cycle modulation.
APPLICATION EXAMPLE
VB
---------------------------------
2.5
–
R
1
R
2
-------
50
μ
A
+
=
VB
OFF
(
)
R
+
R
1
R
2
--------------------
2.5
=
R
1
VB
--------------------–
VB
50
μ
A
)
=
R
2
R
1
VB
OFF
(
)
2.5
–
------------------------------------
=
+2.5V
GND
I
HYS=50
μ
A
_
+
AC_GOOD
R
1
R
2
C
1
R
F
B
L6611
ACsns
VB
AC_GOOD
V
ACsns
VB(on)
VB(off)
PW_OK
ON
=50
μ
A*R
1
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| L6611D | DIGITALLY PROGRAMMABLE SECONDARY HOUSEKEEPING CONTROLLER |
| L6611DTR | DIGITALLY PROGRAMMABLE SECONDARY HOUSEKEEPING CONTROLLER |
| L6611N | DIGITALLY PROGRAMMABLE SECONDARY HOUSEKEEPING CONTROLLER |
| L6615 | HIGH/LOW SIDE LOAD SHARE CONTROLLER |
| L6615D | HIGH/LOW SIDE LOAD SHARE CONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| L6611D | 功能描述:IC CTRLR HOUSEKEEPING BCD 20SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| L6611DTR | 功能描述:IC CTRLR HOUSEKEEPING 20SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| L6611N | 功能描述:IC CTRLR HOUSEKEEPING BCD 20-DIP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:- 應用:多相控制器 輸入電壓:- 電源電壓:9 V ~ 14 V 電流 - 電源:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應商設備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| L6615 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH/LOW SIDE LOAD SHARE CONTROLLER |
| L6615D | 功能描述:DC/DC 開關控制器 H/L Load Share Cont RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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