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參數(shù)資料
| 型號： | ADM1041A |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Secondary-Side Controller with Current Share and Housekeeping |
| 中文描述： | 二次側(cè)電流控制器共享和管家 |
| 文件頁數(shù)： | 18/56頁 |
| 文件大?。?/td> | 991K |
| 代理商： | ADM1041A |
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ADM1041A
THEORY OF OPERATION
POWER MANAGEMENT
This block contains V
DD
undervoltage lockout circuitry and a
power-on/reset function. It also provides precision references
for internal use and a buffered reference voltage, V
REF
. Over-
loading, shorting to ground, or shorting to VDD do not effect
the internal references. See Figure 8.
Rev. 0 | Page 18 of 56
During power-on, V
REF
does not come up until V
DD
exceeds the
upper UVL threshold. Housekeeping components in this block
include reference voltage monitors, a V
DD
overvoltage monitor,
and a ground fault detector.
The ground fault detector monitors ADM1041A ground with
respect to the remote sense pin V
S
. If GND becomes positive
with respect to V
S
, an on-chip signal, V
DD
OK, goes false.
V
DD
OK is true only when all the following conditions are met:
ground is negative with respect to VS, INTREF and EXTREF
are operating normally, V
DD
> UVLHI, and V
DD
< V
DD
OVP
threshold.
GAIN TRIMMING AND CONFIGURATION
The various gain settings and configurations throughout the
ADM1041A are digitally set up via the SMBus after it has been
loaded onto its printed circuit board. There is no need for
external trim potentiometers. An initial adjustment process
should be carried out in a test system. Other adjustments such
as current sense and voltage calibration should be carried out in
the completed power supply.
POR
RESET
V
DD
OK
V
DD
OV
1.25V
2.5V
UVLLO
UVLHI
OVP
GNDOK
GROUND
MONITOR
300
μ
s
≥
500
μ
s
≥
700
μ
s
6.0V–6.5V
4.4V
4.0V
2.0V
V
DD
V
S
–
GND
0.2V
AUXILIARY
REFERENCE
EXTREFOK
REFERENCE
MONITOR
INTREFOK
INTERNAL
REFERENCE
gndok_dis
MAIN
BAND GAP
7
20
1
S
Q
R
Q
S
R
Q
0
Figure 8. Block Diagram of Power Management Section
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| ADM1041AARQZ | 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 標準包裝: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) |
| ADM1041AARQZ-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 標準包裝: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) |
| ADM1041AARQZ-REEL7 | 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 標準包裝: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) |
| ADM1041A-EVALZ | 功能描述:BOARD EVAL FOR ADM1041A RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - DC/DC 與 AC/DC（離線）SMPS 系列:- 標準包裝:1 系列:- 主要目的:DC/DC，步降 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:3.3V 電流 - 輸出:3A 輸入電壓:4.5 V ~ 28 V 穩(wěn)壓器拓撲結(jié)構(gòu):降壓 頻率 - 開關(guān):250kHz 板類型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名稱:497-12113STEVAL-ISA094V1-ND |
| ADM1041ARQ | 功能描述:IC PWR SUPP MON/LOAD SHAR 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 標準包裝: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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