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参数资料
| 型号： | ADM1041 |
| 厂商： | Analog Devices, Inc. |
| 英文描述： | Secondary-Side Controller with Current Share and Housekeeping |
| 中文描述： | 二次侧电流控制器共享和管家 |
| 文件页数： | 18/64页 |
| 文件大小： | 1063K |
| 代理商： | ADM1041 |
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ADM1041
Mnemonic
Pulse_OK
Rev. A | Page 18 of 64
Description
As well as providing ac sense, the preceding connection to the transformer is used to gate the
operation of the OrFET circuit. If the output of the transformer is good and has no problems, the
OrFET circuit allows gate drive to the OrFET.
AC Sense Hysteresis. Configurable voltage on the ac sense input allows the ac sense upper and lower
threshold to be adjusted to suit different amounts of low frequency ripple present on the bulk
capacitor.
An alternate form of ac sense can be accepted by the ASIC. This may in the form of an opto-coupled
signal from the primary side where the actual level sensing might be done. As with the above, while
ac is low and UVB is disabled, AC_OK is false and DC_OK is true. Any brownout protection that might
be required on the primary is done on the primary side.
At start-up, the voltage reference to the voltage error amplifier is brought up slowly in approximately
127 steps to provide a controlled rate of rise of the output voltage.
An OVP fault on the auxiliary supply to the ASIC causes a standard OVP operation (see the OVP
function).
A UVL fault on the auxiliary supply to the IC causes a standard UVP operation (see the UVP function).
In this mode, the housekeeping circuit attempts to restart the supply after an undervoltage event at
about 1 second intervals. No other fault can initiate auto-restart.
The internal precision reference is monitored by a separate reference for overvoltage and allows truly
redundant OVP. The externally available reference is also monitored for an undervoltage that would
indicate a short on the pin.
The internal ASIC ground is constantly monitored against the remote sense negative pin. If the chip
ground goes positive with respect to this pin, it indicates that the chip ground is open-circuit either
inside the ASIC or the external wiring. The ASIC would be latched off, similar to an OV event.
AC Hysteresis
AC
SENSE
2
Soft-start
V
DD
–OVP
V
DD
–UVL
AutoRestart Mode
V
REF
–MON
GND–MON
相关PDF资料 |
PDF描述 |
|---|---|
| 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 |
| ADM1041AARQZ-REEL7 | Secondary-Side Controller with Current Share and Housekeeping |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1041A | 制造商:AD 制造商全称:Analog Devices 功能描述:Secondary-Side Controller with Current Share and Housekeeping |
| ADM1041AARQZ | 功能描述:IC SECONDARY SIDE CTRLR 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) |
| ADM1041AARQZ-REEL | 功能描述:IC SECONDARY SIDE CTRLR 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) |
| ADM1041AARQZ-REEL7 | 功能描述:IC SECONDARY SIDE CTRLR 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) |
| ADM1041A-EVALZ | 功能描述:BOARD EVAL FOR ADM1041A RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
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