- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄373995 > ADM1041ARQ-REEL7 (ANALOG DEVICES INC) Secondary-Side Controller with Current Share and Housekeeping PDF資料下載
參數(shù)資料
| 型號： | ADM1041ARQ-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Secondary-Side Controller with Current Share and Housekeeping |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| 封裝： | MO-137AE, QSOP-24 |
| 文件頁數(shù)： | 3/64頁 |
| 文件大小： | 1063K |
| 代理商： | ADM1041ARQ-REEL7 |
第1頁第2頁當(dāng)前第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁
ADM1041
GENERAL DESCRIPTION
The ADM1041 is a secondary-side and management IC specifi-
cally designed to minimize external component counts and to
eliminate the need for manual calibration or adjustment on the
secondary-side controller. The principle application of this IC is
to provide voltage control, current share, and housekeeping
functions for single output in N+1 server power supplies.
Rev. A | Page 3 of 64
The ADM1041 is manufactured with a 5 V CMOS process and
combines digital and analog circuitry. An internal EEPROM
provides added flexibility in the trimming of timing and voltage
and selection of various functions. Programming is done via an
SMBus serial port that also allows communication capability
with a microprocessor or microcontroller.
The usual configuration using this IC is on a one per output
basis. Outputs from the IC can be wire-ORed together or bused
in parallel and read by a microprocessor. A key feature on this
IC is support for an OrFET circuit when higher efficiency or
power density is required.
SAMPLE APPLICATION CIRCUIT DESCRIPTION
Figure 1 shows a sample application circuit using the ADM1041.
The primary side is not detailed and the focus is on the secon-
dary side of the power supply.
The ADM1041 controls the output voltage from the power
supply to the designed programmed value. This programmed
value is determined during power supply design and is digitally
adjusted via the serial interface. Digital adjustment of the
current sense and current limit is also calibrated via the serial
interface, as are all of the internal timing specifications.
The control loop consists of a number of elements, notably the
inputs to the loop and the output of the loop. The ADM1041
takes the loop inputs and determines what, if any, adjustments
are needed to maintain a stable output. To maintain a stable
loop, the ADM1041 uses three main inputs:
Remote voltage sense
Load current sense
Current sharing information
In this example, a resistor divider senses the output current as a
voltage drop across a sense resistor (RS) and feeds a portion
into the ADM1041. Remote local voltage sense is monitored via
V
S
+ and V
S
pins. Finally, current sharing information is fed
back via the share bus. These three elements are summed
together to generate a control signal (V
CMP
), which closes the
loop via an optocoupler to the primary side PWM controller.
Another key feature of the ADM1041 is its control of an OrFET.
The OrFET causes lower power dissipation across the ORing
diode. The main function of the OrFET is to disconnect the
power supply from the load in the event of a fault occurring
during steady state operation, for example, if a filter capacitor or
rectifier fails and causes a short. This eliminates the risk of
bringing down the load voltage that is supplied by the redun-
dant configuration of other power supplies. In the case of a
short, a reverse voltage is generated across the OrFET. This
reverse voltage is detected by the ADM1041 and the OrFET is
shut down via the F
G
pin. This intervention prevents any
interruption on the power supply bus. The ADM1041 can then
be interrogated via the serial interface to determine why the
power supply has shut down.
This application circuit also demonstrates how temperature can
be monitored within a power supply. A thermistor is connected
between the V
DD
and MON2 pins. The thermistor’s voltage varies
with temperature. The MON2 input can be programmed to trip
a flag at a voltage corresponding to an overheating power supply.
The resulting action may be to turn on an additional cooling
fan to help regulate the temperature within the power supply.
R
SENSE
ADM1041
PWM +
PRIMARY
DRIVER
OPTO-
COUPLER
AC PULSE
SENSE
DIFF CURRENT
SENSE
OrFET
CONTROL
ERROR
AMP
EEPROM AND
RAM AND TRIM
SMBus
CURRENT
SHARE
DIFF LOAD AND LOCAL
VOLTAGE SENSE
VOLT, TEMP MONITOR
AND FAULT DETECTION
SOFT
START
SHARE
BUS
μ
C
(
μ
C OR STANDALONE
OPERATION)
LOAD
0
Figure 2. Application Block Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADM1041 | Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041ARQ | Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041A | Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041AARQZ | Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041AARQZ-REEL | Secondary-Side Controller with Current Share and Housekeeping |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1041ARQZ | 功能描述:IC PWR SUPP MON/LOAD SHAR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)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(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041ARQZ-REEL | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)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(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041ARQZ-REEL7 | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)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(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041ARQZ-RL7 | 功能描述:IC SECONDARY SIDE CTRLR 24QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電源控制器，監(jiān)視器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 應(yīng)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(yīng)商設(shè)備封裝:40-TQFN-EP（5x5） 包裝:帶卷 (TR) |
| ADM1041-EVAL | 功能描述:BOARD EVALUATION ADM1041 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。