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參數(shù)資料
| 型號： | MAX5941BCSE+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC IEEE 802.3AF-COMP POE 16-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 控制器類型： | 以太網(wǎng)供電控制器（POE） |
| 接口： | IEEE 802.3af |
| 電源電壓： | 48V |
| 電流 - 電源： | 1mA |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SOIC |
| 包裝： | 管件 |
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
16
______________________________________________________________________________________
to 2.4V, the internal voltage reference. Pull VSS_SHDN
below 0.25V to disable the controller.
Undervoltage lockout shuts down the controller when
VCC is less than 6.6V. The regulators for V+ and the ref-
erence remain on during shutdown.
Current-Sense Comparator
The current-sense (CS) comparator and its associated
logic limit the peak current through the MOSFET.
Current is sensed at CS as a voltage across a sense
resistor between the source of the MOSFET and GND.
To reduce switching noise, connect CS to the external
MOSFET source through a 100
resistor or an RC low-
pass filter (Figures 5, 6). Select the current-sense resis-
tor, RSENSE, according to the following equation:
where ILimPrimary is the maximum peak primary-side
current.
When VCS > 465mV, the power MOSFET switches off.
The propagation delay from the time the switch current
reaches the trip level to the driver turn-off time is 170ns.
RI
SENSE
LimPrimary
= 0 465
./
V
MAX5941B
VDD
UVLO
RCL
V+
GND
SS_SHDN
PGOOD
GATE
VEE
NDRV
CS
V-
VCC
OPTO
VIN
(30V TO 72V)
VOUT
OPTOCOUPLER
CDD
47
F
CSS
0.1
F
RDISC
25.5k
3k
4.75k
CCC
10
F
100
RSENSE
100m
20
R1
25.5k
R2
8.25k
COUT
3
× 560F
0.1
F
CIN
3
× 0.47F
L1
4.7
H
0.1
F
240k
NT
NR
NP
NS
M1
IRF640N
4.7nF
250VAC
TLV431
1N4148
6
CMHD2003
14
5
1nF
SBL204OCT
5V/10A
220
14
RCL
OUT
Figure 5. Forward Converter
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5941BCSE+ | 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX5941BCSE+T | 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
| MAX5941BCSE-T | 功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6 |
| MAX5941BESE | 功能描述:電源開關(guān) IC - POE / LAN RoHS:否 制造商:Fairchild Semiconductor 開關(guān)數(shù)量:Single 開關(guān)配置:SPST 開啟電阻（最大值）:7.3 Ohms 串話: 帶寬: 開啟時(shí)間（最大值）:13 ns 關(guān)閉時(shí)間（最大值）:20 ns 切換電壓（最大）: 工作電源電壓:8 V to 26 V 最大工作溫度:+ 125 C 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220F-6 |
| MAX5941BESE+ | 功能描述:輸入/輸出控制器接口集成電路 IEEE 802.3af POE Int/PWM Controller RoHS:否 制造商:Silicon Labs 產(chǎn)品: 輸入/輸出端數(shù)量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray |
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