参数资料
| 型号： | ADM1041AARQZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/56页 |
| 文件大小： | 0K |
| 描述： | IC SECONDARY SIDE CTRLR 24QSOP |
| 产品变化通告： | Product Discontinuance 27/Oct/2011 |
| 标准包装： | 56 |
| 应用： | 次级侧控制器 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 6mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 24-QSOP |
| 包装： | 管件 |
| 配用： | ADM1041-EVAL-ND - BOARD EVALUATION ADM1041 |
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ADM1041A
DIFFERENTIAL REMOTE SENSE AMPLIFIER
This amplifier senses the load voltage and is the main voltage
feedback input. A differential input is used to compensate for
the voltage drop on the negative output cable of the power
supply. An external voltage divider should be designed to set the
VS+ pin to approximately 2.0 V with respect to VS–. The
SET LOAD VOLTAGE
The load voltage may be trimmed via the SMBus by a trim stage
at the output of the differential remote sense amplifier. The
voltage at the output of the trimmer is 1.50 V when the voltage
LOAD OVERVOLTAGE (OV)
A comparator at the output of the load voltage trim stage
detects load overvoltage. The load OV threshold can be
trimmed via the SMBus. The main purpose is to turn off the
OrFET when the load voltage rises to an intermediate over-
voltage level that is below the local OVP level. This circuit is
LOCAL VOLTAGE SENSE
This amplifier senses the output voltage of the power supply just
before the OrFET. Its input is derived from one of the pins used
for current sensing and is set to 2.0 V by an external voltage
LOCAL OVERVOLTAGE PROTECTION (OVP)
This is the main overvoltage detection for the power supply. It is
detected locally so that only the faulty power supply shuts down
in the event of an OVP condition in an N + 1 redundant power
system. This occurs only after a load OV event. The local OVP
LOCAL UNDERVOLTAGE PROTECTION (UVP)
This is the main undervoltage detection for the power supply. It
is also detected locally so that a faulty power supply can be
detected in an N+1 redundant power system. The local UVP
FALSE UV CLAMP
If a faulty power supply causes an OVP condition on the system
bus, the control loop in the good power supplies is driven to
zero output. Therefore, a clamp is required to prevent the good
power supplies from indicating an undervoltage, and to ensure
they must recover quickly after the faulty power supply has shut
down. The false UV clamp achieves this by clamping the output
voltage just above the local UVP threshold. It may be trimmed
via the SMBus. The OCPF signal disables the clamp during
V S –
21
REMOTE
SENSE
FROM
35k Ω
35k Ω
LOAD
V S +
20
35k Ω
3 5k Ω
SET LOAD
VOLTAGE
25k Ω
CURRENT LIMIT
DIFF. VOLTAGE SENSE
CURRENT SHARE
70 μ A
VOLTAGE
ERROR AMP
1V
3V
CAPTURE
5
V CMP
SET LOAD
OVERVOLTAGE
V LS 2
× 1.3
1.25V
LOADVOK
V REF
1.5V
OCPF
SET UV CLAMP
THRESHOLD
FALSE UV
CLAMP
SOFT-
START
RAMP UP
SET OVP
THRESHOLD
1.5V
OVP
UVP
TO
GENERAL
LOGIC
TO
GENERAL
NOTE:
SET UVP
THRESHOLD
LOGIC
ALL POTENTIOMETERS (
) ARE DIGITALLY PROGRAMMABLE THROUGH REGISTERS.
Figure 9. Block Diagram of Voltage-Sense Amplifier
Rev. 0 | Page 19 of 56
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| 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: |
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