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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： | 40/64页 |
| 文件大小： | 1063K |
| 代理商： | ADM1041 |
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ADM1041
EXTENDED SMBus ADDRESSING
A potential problem exists when using more than three
ADM1041s in a single power supply. The first time the device is
powered up, Bit 1 of Configuration Register 1 (ADD1) is 0. This
means that only three device addresses are initially available
defined by ADD0; if there are more than three devices in a
system, two or more of them will have duplicate addresses. See
Figure 38.
Rev. A | Page 40 of 64
To overcome this problem, the ICT pin has additional function-
ality. Taking ICT below GND temporarily disables the SMBus
function of the device. Thus, if the ICT pin of all devices in
which ADD1 is to remain 0 are taken negative, the ADD1 bits of
all other devices can be set to 1 via the SMBus. Each device then
has a unique address. Internal diodes clamp the negative voltage
to about 0.6 V, and care should be taken to limit the current to
less than approximately 5 mA on each ICT input to prevent the
possibility of damage or latch-up. The suggested current is
3 mA. One example of a suitable circuit is given in Figure 38. The
ADM1041s can then be configured and trimmed. If required,
AC_OKLink and PS
ON
LINK must be configured last. If ICT is
used for its intended purpose as a current transformer input,
care must be taken with the circuit design to allow the extended
SMBus addressing to work.
BACKDOOR ACCESS
After SCL and SDA have been configured as AC_OKLink and
PS
ON
LINK, it may be desired to recover the SMBus access to the
ADM1041. Changes may be necessary to the internal configura-
tion or trim bits. This is achieved by holding the SCL and SDA
pins at 0 V (ground) while cycling V
DD
. SCL and SDA then
revert to SMBus operation. See Figure 38.
ADD1 = 1
ADD1 = 0
2.4mA
8
13
14
15
8
13
14
15
8
13
14
15
8
13
14
15
8
13
14
15
8
13
14
15
V
DD
–12V
EXTENDED
SMBus
ADDRESSING
BACKDOOR
DEVICE 0
DEVICE 1
DEVICE 2
DEVICE 3
DEVICE 4
DEVICE 5
V
DD
N/C
4k
4k
4k
N/C
PS
ON
Link
AC_OKLink
V
DD
ICT
SCL
SDA
ADD0
ICT
SCL
SDA
ADD0
ICT
SCL
SDA
ADD0
ICT
SCL
SDA
ADD0
ICT
SCL
SDA
ADD0
ICT
SCL
SDA
ADD0
0
Figure 38. Extended SMBus Addressing and Backdoor Access
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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