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参数资料
| 型号： | SI3460-E02-GMR |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC POWER MANAGEMENT CTLR 11VQFN |
| 标准包装： | 500 |
| 应用： | 供电设备（PSE） |
| 电流 - 电源： | 500mA |
| 电源电压： | 2.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 11-QFN（3x3） |
| 包装： | 带卷 (TR) |
Si3460
4. Si3460-EVB Functional Description
In combination with low-cost external components, the Si3460 controller provides a complete PSE solution for
embedded PoE applications. Included in the Si3460-EVB reference design is a digital PWM controller-based dc-dc
converter that simplifies overall system design by generating the –48 V PSE supply voltage. An isolated 11 to 16 V
input dc supply is all that is needed to supply the Si3460-EVB reference design. Refer to the Si3460-EVB User ’s
Guide and schematics for descriptions in the following sections.
4.1. Reset State
At powerup or if reset is held low, the Si3460 is in an inactive state with the PWM turned off (the switcher FET, M1,
is off) and the pass FET, M2, is off.
4.2. Operating Mode Configuration
At powerup, the Si3460 reads the voltage on the STATUS pin, which is set by a resistor divider from V EE to chip
ground. The STATUS pin voltage level configures all of the Si3460's operating modes as summarized in Table 8.
Table 8. Operating Modes
Operating Mode
STATUS
Pin Voltage
Pin voltage at V EE
(no resistors populated)
3.0 V
2.75 V
2.5 V
2.25 V
2.0 V
1.75 V
1.5 V
1.25 V
1.0 V
0.5 V
< 0.25 V
(pullup resistor only)
Power Level
Supported (W)
15.4
7.0
4.0
15.4
7.0
4.0
4.0
7.0
15.4
4.0
7.0
15.4
Classes Supported
All class levels
Class 1 or 2
Class 1
All class levels
Class 1 or 2
Class 1
Class 1
Class 1 or 2
All class levels
Class 1
Class 1 or 2
All class levels
Midspan/
Endpoint
Endpoint
Endpoint
Endpoint
Endpoint
Endpoint
Endpoint
Midspan
Midspan
Midspan
Midspan
Midspan
Midspan
Restart Action on
Fault or Overload
Event Condition
Auto restart after 2 s
Auto restart after 2 s
Auto restart after 2 s
Restart on RST
Restart on RST
Restart on RST
Restart on RST
Restart on RST
Restart on RST
Auto restart after 2 s
Auto restart after 2 s
Auto restart after 2 s
After powerup, the STATUS pin drives the base of a PNP transistor that controls an LED. To maintain an accurate
voltage level at the transistor base, it is recommended that the parallel resistance setting the pin voltage be less
than 1 k ? .
Rev. 1.2
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| Si3460-E03-GM | 功能描述:热插拔功率分布 Single-port PoE PSE I/F w/DC-DC ctrlr RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| SI3460-E03-GMR | 功能描述:PMIC 解决方案 Single-port PoE PSE I-face DC-DC Ctrlr RoHS:否 制造商:Texas Instruments 安装风格:SMD/SMT 封装 / 箱体:QFN-24 封装:Reel |
| Si3460-EVB | 功能描述:电源管理IC开发工具 Si3460 PSE Eval Brd and Ref Design Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SI3460-XYY-GM | 制造商:SILABS 制造商全称:SILABS 功能描述:IEEE 802.3af PSE INTERFACE AND DC-DC CONTROLLER |
| SI3461 | 制造商:SILABS 制造商全称:SILABS 功能描述:SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE |
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