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參數(shù)資料
| 型號： | ADM1041ARQ |
| 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)： | 27/64頁 |
| 文件大?。?/td> | 1063K |
| 代理商： | ADM1041ARQ |
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ADM1041
PULSE/AC
SENSE
2
When configured, PULSE and AC
SENSE
monitor the output of
the power main transformer. See Figure 16.
Rev. A | Page 27 of 64
PULSE
Providing the output of the pulse function (PULSE_OK) is
high, the FET in the ORing circuit can be turned on. If the
pulses stop for any reason, about 1 second later the PULSE_OK
goes low and the OrFET drive is disabled. This delay allows
passage of all expected pulse skipping modes that might occur
in no load or very light load situations. See Figure 16.
AC
SENSE
This is rarely used to measure directly the ac input to the supply.
AC
SENSE
1 or AC
SENSE
2 are usually used to indirectly measure the
voltage across the bulk capacitor so that the system can be
signaled that power is normal. Also if power is actually lost,
AC
SENSE
represents when just enough energy is left for an orderly
shutdown of the power supply. See Figure 16.
The ac sense function monitors the amplitude of the incoming
pulse and, if sufficiently high, generates a flag to indicate ac, or
strictly speaking, the voltage on the bulk capacitor, is okay. Since
the envelope of the pulse has a considerable amount of 100 Hz
ripple, hysteresis is available on this input pin. Internally there is
a 20 μA to 80 μA current sink. With a 909R external thevenin
resistance, this current range translates to a voltage hysteresis of
200 mV to 500 mV. The internal hysteresis current is turned off
when the voltage exceeds the reference on the comparator. This
form of hysteresis allows simple scaling to be implemented by
changing the source impedance of the pulse conditioning
circuit. Some trimming of hysteresis and threshold voltage is
provided. The ac sense function can be configured to be derived
from AC
SENSE
2 rather than AC
SENSE
1. This allows a separate dc
input from various locations to be used to generate AC_OK for
better flexibility or accuracy.
AC_OK
1.5V
0.525V
PULSE
AC
SENSE
1
AC
SENSE
2
SELECT
AC
SENSE
5.3k
5.3k
TRIM
HYSTERESIS
PULSEOK
TO OrFET SOURCE
TO CURRENT
SENSE RESISTOR
AND OrFET GATE
S
Q
R
S
Q
R
CLK
1 SEC
Q
R
10
9
0
CLK
1 mS
Q
R
Figure 16. Pulse In and AC Sense Circuit
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| ADM1041AARQZ-REEL | Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041AARQZ-REEL7 | Secondary-Side Controller with Current Share and Housekeeping |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| ADM1041ARQ-2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| ADM1041ARQ-REEL | 制造商:AD 制造商全稱:Analog Devices 功能描述:Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041ARQ-REEL7 | 功能描述:IC PWR SUP MON/LOAD SHARE 24QSOP RoHS:否 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 | 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) |
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