- 您现在的位置：买卖IC网 > PDF目录17367 > ADM1041-EVAL (Analog Devices Inc)BOARD EVALUATION ADM1041 PDF资料下载
参数资料
| 型号： | ADM1041-EVAL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 17/64页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION ADM1041 |
| 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： | ADM1041 |
| 相关产品： | ADM1041AARQZ-REEL7-ND - IC SECONDARY SIDE CTRLR 24QSOP ADM1041ARQZ-REEL7TR-ND - IC SECONDARY SIDE CTRLR 24QSOP ADM1041AARQZ-REEL-ND - IC SECONDARY SIDE CTRLR 24QSOP ADM1041ARQZ-REEL-ND - IC SECONDARY SIDE CTRLR 24QSOP ADM1041AARQZ-ND - IC SECONDARY SIDE CTRLR 24QSOP ADM1041ARQZ-ND - IC PWR SUPP MON/LOAD SHAR 24QSOP ADM1041ARQ-REEL7-ND - IC PWR SUP MON/LOAD SHARE 24QSOP ADM1041ARQ-ND - IC PWR SUPP MON/LOAD SHAR 24QSOP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页
ADM1041
TERMINOLOGY
Table 5.
Mnemonic
POR
UVL
CVMode
CCMode
UVP
OVP
OCP
OTP
UVB
DC_OK
AC_OK
DC_OKondelay
DC_OKoffdelay
Debounce Digital Noise Filter
AC SENSE 1
Description
Power-On Reset. When V DD is initially applied to the ASIC, the POR function clears all latches and puts
the logic into a state that allows a clean start-up.
Undervoltage Lockout. This is used on V DD to prevent spurious modes of operation that might occur if
V DD is below a specific voltage.
Constant Voltage Mode. This is the normal mode of operation of the power supply main output. The
output voltage remains constant over the whole range of current specified.
Constant Current Mode. This mode of operation occurs when the output is overloaded until or unless
a shutdown event is triggered. The output current control level remains constant down to 0 V.
Undervoltage Protection. If the output being monitored is detected as going under voltage, the UVP
function sends a fault signal. After a delay, PEN goes false, the output is disabled, and either latch-off
or an auto-restart occurs, depending on the mode selected. The DC_OK output also goes false
immediately to show that the output is out of tolerance.
Overvoltage Protection. If the output being monitored is detected as going over voltage, the OVP
function latches and sends a fault signal, PEN goes false, and CBD goes true. The DC_OK output also
goes false immediately. OVP faults are always latching and require the cycling of PSON or V DD or
SMBus command to reset the latch.
Overcurrent Protection. If the output being monitored is detected as going over current for a certain
time, the OCP function sends out a fault signal that triggers a shutdown that can be latched or
allowed to auto-restart, depending on the mode selected. Prior to shutting down, the DC_OK output
goes false warning the system that output will be lost. The latch is the same one used for OVP. For
auto-restart, the OCP time out period is configurable.
Overtemperature Protection. If the temperature being sensed is detected as going over the selected
limit, the OTP function sends out a fault signal that triggers a shutdown that can be latched or allowed
to auto-restart depending on the mode selected. Prior to shutting down, the DC_OK output goes false
warning the system that output will be lost. The latch is the same one used for OVP.
Undervoltage Blanking. The UVP function is blanked (disabled) during power-up or if the AC SENSE
function is false (ac line voltage is low). When in constant current mode, UVB is disabled. The status of
AC SENSE must be known to the IC, either by virtue of the on-board AC SENSE or communicated by the
SMBus with the help of an external microprocessor or by using AC_OKLink. When in constant current
mode, due to an overload, UVB is applied for the overcurrent ride through period.
The DC_OK function advises the system on the status of the power supply. When it is false, the system
is assured of at least 1 ms of operation if ac power is lost for any reason. Other turn-off modes provide
more warning time. This pin is an open-drain output. It can be configured as a P-channel pull-up or an
N-channel pull-down. It may also be configured as positive or negative (inverted) logic.
The AC_OK function advises the system whether or not sufficient bulk voltage is present to allow
reliable operation. The system may choose to shut down if this pin is false. The power supply normally
tries to maintain normal operation as long as possible, although DC_OK goes false when only a
millisecond or so of operation time is left. This pin is an open-drain output. It can be configured as a
P-channel pull-up or an N-channel pull-down. It may also be configured as positive or negative
(inverted) logic.
The DC_OK output is kept false for typically 100 ms to 900 ms during power-up.
When the system is to be shut down in response to PSON going low, or in response to an OCP or OTP
event, a signal is first sent to the DC_OK output to go false as a warning that power is about to be lost.
PEN is signaled false typically 2 ms later (configurable).
All of the inputs to the logic core are first debounced or digitally filtered to improve noise immunity.
The debounce period for OV events is in the order of 16 μs, for UV events it is 450 μs, and for PSON it is
typically 80 ms (configurable).
A voltage from the secondary of the power transformer, which can provide an analog of the bulk
supply, is rectified and lightly filtered and measured by the ac sense function. At start-up, if this
voltage is adequate, this function signals the end user system that it is okay to start. If a brown-out
occurs or ac power is removed, this function can provide early warning that power is about to be lost
and allow the system to shut down in an orderly manner. While AC SENSE is low, UVB is enabled, which
means undervoltage protection is not initiated. If ac power is so low that the converter cannot
continue to operate, other protection circuits on the primary side normally shut down the converter.
When an adequate voltage level is resumed, a power-up cycle is initiated.
Rev. A | Page 17 of 64
相关PDF资料 |
PDF描述 |
|---|---|
| TDC225K025NSE-F | CAP TANT 2.2UF 25V 10% RADIAL |
| MIC59P50BWM | IC DRVR LATCH 8BIT PAR IN 24SOIC |
| A9AAT-0906F | FLEX CABLE - AFE09T/AF09/AFE09T |
| ISL85033EVAL2Z | EVAL BOARD2 FOR ISL85033 |
| MIC5891BWM | IC DRVR LATCH 8BIT SER IN 16SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM10470J | 制造商: 功能描述: 制造商:undefined 功能描述: |
| ADM1051 | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Dual Voltage Regulator Controllers |
| ADM1051A | 制造商:AD 制造商全称:Analog Devices 功能描述:Precision Dual Voltage Regulator Controllers |
| ADM1051AJR | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Step Down 12V Input 8-Pin SOIC N 制造商:Analog Devices 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 12V 8SOIC - Bulk 制造商:Rochester Electronics LLC 功能描述:ENHANCED DUAL BUS TERMINATOR - Bulk |
| ADM1051AJR-REEL | 制造商:Analog Devices 功能描述:DC DC Cntrlr Dual-OUT Step Down 12V Input 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 12V 8SOIC N - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:ENHANCED DUAL BUS TERMINATOR - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。