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| 型号： | ADM1041A-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/56页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADM1041A |
| 标准包装： | 1 |
| 主要目的： | AC/DC，次级 |
| 输出及类型： | 1，非隔离 |
| 功率 - 输出： | 24W |
| 输出电压： | 12V |
| 电流 - 输出： | 2A |
| 输入电压： | 85 ~ 132VAC |
| 板类型： | 完全填充 |
| 已供物品： | 板，线缆，软件 |
| 已用 IC / 零件： | ADM1041A |
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ADM1041A
PULSE/AC SENSE 2
When configured, PULSE and AC SENSE monitor the output of
PULSE
Providing the output of the pulse function (PULSE_OK) is
high, the FET in the OR’ing 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
AC SENSE
This is rarely used to measure the ac input to the supply
directly. AC SENSE 1 or AC SENSE 2 are usually used to measure,
indirectly, 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
The ac sense function monitors the amplitude of the incoming
pulse and, if sufficiently high, generates a flag to indicate that
the ac, or strictly speaking, the voltage on the bulk capacitor, is
okay. Because 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.
TO OrFET SOURCE
TO CURRENT-
SENSE RESISTOR
AND OrFET GATE
0.525V
S
Q
PULSEOK
PULSE
AC SENSE 1
9
5.3k Ω
R
CLK
1 SEC
Q
R
SELECT
AC SENSE
AC SENSE 2 10
5.3k Ω
1.5V
S
Q
AC_OK
R
TRIM
HYSTERESIS
Figure 16. Pulse In and AC SENSE Circuit
Rev. 0 | Page 24 of 56
CLK
1 mS
Q
R
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1041ARQ | 功能描述:IC PWR SUPP MON/LOAD SHAR 24QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| 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 制造商全称: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 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
| ADM1041ARQZ | 功能描述:IC PWR SUPP MON/LOAD SHAR 24QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 电源控制器，监视器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 应用:多相控制器 输入电压:- 电源电压:9 V ~ 14 V 电流 - 电源:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（5x5） 包装:带卷 (TR) |
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