поискавой системы для электроныых деталей
  Russian  ▼
ALLDATASHEETRU.COM

X  

SI3402-B датащи(PDF) 10 Page - Silicon Laboratories

номер детали SI3402-B
подробное описание детали  FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
производитель  SILABS [Silicon Laboratories]
домашняя страница  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI3402-B датащи(HTML) 10 Page - Silicon Laboratories

Back Button SI3402-B Datasheet HTML 6Page - Silicon Laboratories SI3402-B Datasheet HTML 7Page - Silicon Laboratories SI3402-B Datasheet HTML 8Page - Silicon Laboratories SI3402-B Datasheet HTML 9Page - Silicon Laboratories SI3402-B Datasheet HTML 10Page - Silicon Laboratories SI3402-B Datasheet HTML 11Page - Silicon Laboratories SI3402-B Datasheet HTML 12Page - Silicon Laboratories SI3402-B Datasheet HTML 13Page - Silicon Laboratories SI3402-B Datasheet HTML 14Page - Silicon Laboratories Next Button
Zoom Inzoom in Zoom Outzoom out
 10 / 21 page
background image
Si3402-B
10
Rev. 1.0
3. Functional Description
The Si3402 consists of two major functions: a hotswap
controller/interface
and
a
complete
pulse-width-
modulated switching regulator (controller and power
FET).
3.1. Overview
The hotswap interface of the Si3402 provides the
complete front end of an 802.3-compliant PD. The
Si3402 also includes two full diode bridges, a transient
voltage
surge
suppressor,
detection
circuit,
classification current source, and dual-level hotswap
current limiting switch. This high level of integration
enables direct connection to the RJ-45 connector,
simplifies system design, and provides significant
advantages for reliability and protection. The Si3402
requires
only
four
standard
external
components
(detection resistor, optional classification resistor, load
capacitor, and input capacitor) to create a fully 802.3-
compliant
interface.
For
more
information
about
supporting higher-power applications, see “AN313:
Using the Si3402 in High Power Applications” and
“AN314: Power Combining Circuit for PoE for up to
18.5 W Output”.
The
Si3402
integrates
a
complete
pulse-width
modulated
switching
regulator
that
includes
the
controller and power FET. The switching regulator
utilizes a constant frequency pulse-width modulated
controller optimized for all possible load conditions in
PoE applications. The regulator integrates a low on-
resistance
(Ron)
switching
power
MOSFET
that
minimizes power dissipation, increases overall regulator
efficiency, and simplifies system design. An integrated
error amplifier, precision reference, and soft-start
feature provide the flexibility of using a non-isolated
buck regulator topology or an isolated flyback regulator
topology.
The Si3402 is designed to operate with both 802.3-
compliant Power Sourcing Equipment (PSE) and pre-
standard (legacy) PSEs that do not adhere to the 802.3
specified inrush current limits. The Si3402 is compatible
with compliant and legacy PSEs because it uses two
levels for the hotswap current limits. By setting the initial
inrush current limit to a low level, a PD based on the
Si3402 minimizes the current drawn from either a
compliant or legacy PSE during startup. After powering
up, the Si3402 automatically switches to a higher-level
current limit, thereby allowing the PD to consume up to
12.95 W (the max power allowed by the 802.3
specification).
Excessive power cycling or short circuit faults will
engage the thermal overload protection to prevent the
on-chip power MOSFETs from exceeding their safe and
reliable operating ranges. By properly sizing the devices
and implementing on-chip thermal protection, the
Si3402 can go through multiple turn-on sequences
without overheating the package or damaging the
device. The switching regulator power MOSFET has
been designed and sized to withstand the high peak
currents created when converting a high-voltage, low-
current supply into a low-voltage, high-current supply.
3.2. PD Hotswap Controller
The Si3402 hotswap controller changes its mode of
operation based on the input voltage applied to the CT1
and CT2 pins or the SP1 and SP2 pins, the 802.3-
defined modes of operation, and internal controller
requirements. Table 9 defines the modes of operation
for the hotswap interface.
Figure 3. Hotswap Block Diagram
DIODE BRIDGES
AND PROTECTION
DETECTION
CONTROL
ON
OFF
VPOSF
VNEG
CT1/SP1
CT2/SP2
0 V
12 V
RDET
CLASSIFICATION
CONTROL
ON
OFF
12 V
22 V
RCL
CENTRAL BIAS
BANDGAP REF
10 V
5 V
1.23 V
CURRENT
LIMIT
HI/LO
HOTSWAP
CONTROL
ON
OFF
39 V
32 V
SWITCHER
STARTUP & BIAS
IABS
ITC
VREF
HSO
POWER LOSS
DETECTOR
PLOSS
SSFT
VPOSS
ISOSSFT


Аналогичный номер детали - SI3402-B

производительномер деталидатащиподробное описание детали
logo
Skyworks Solutions Inc.
SI3402-B SKYWORKS-SI3402-B Datasheet
1Mb / 22P
   FULLY-INTEGRATED IEEE 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Rev. 1.1
logo
Silicon Laboratories
Si3402-B-GM SILABS-Si3402-B-GM Datasheet
65Kb / 1P
   This change is considered a minor change which does not affect form, fit, function, quality, or reliability.
logo
Skyworks Solutions Inc.
SI3402-B-GM SKYWORKS-SI3402-B-GM Datasheet
1Mb / 22P
   FULLY-INTEGRATED IEEE 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Rev. 1.1
logo
Silicon Laboratories
Si3402-B-GMR SILABS-Si3402-B-GMR Datasheet
65Kb / 1P
   This change is considered a minor change which does not affect form, fit, function, quality, or reliability.
More results

Аналогичное описание - SI3402-B

производительномер деталидатащиподробное описание детали
logo
Skyworks Solutions Inc.
SI3402-B SKYWORKS-SI3402-B Datasheet
1Mb / 22P
   FULLY-INTEGRATED IEEE 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Rev. 1.1
logo
List of Unclassifed Man...
SI3402 ETC2-SI3402 Datasheet
261Kb / 22P
   FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE
logo
Skyworks Solutions Inc.
SI3402-C SKYWORKS-SI3402-C Datasheet
1Mb / 21P
   FULLY-INTEGRATED IEEE 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Revision 0.4 to Revision 1.0
logo
Silicon Laboratories
SI3402-C SILABS-SI3402-C Datasheet
596Kb / 21P
   FULLY-INTEGRATED IEEE 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
SI3400 SILABS-SI3400 Datasheet
447Kb / 20P
   FULLY-INTEGRATED 802.3-COMPLIANT PD INTERFACE AND SWITCHING REGULATOR
logo
List of Unclassifed Man...
SI3400-GM ETC2-SI3400-GM Datasheet
458Kb / 20P
   FULLY-INTEGRATED 802.3-COMPLIANT PD INTERFACE AND SWITCHING REGULATOR
logo
Skyworks Solutions Inc.
SI3404 SKYWORKS-SI3404 Datasheet
474Kb / 26P
   Fully-Integrated IEEE 802.3 Type 1-Compliant POE PD Interface and High-Efficiency Switching Regulator with Compact Footprint
Revision 0.5 February, 2018
SI3406X SKYWORKS-SI3406X Datasheet
920Kb / 37P
   Fully-Integrated IEEE 802.3-Compliant POE PD Interface and High-Efficiency Switching Regulators with Sleep, Wake, and LED Drive
Revision 1.1 July, 2022
logo
STMicroelectronics
PM8803TR STMICROELECTRONICS-PM8803TR Datasheet
836Kb / 34P
   High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller
PM8801 STMICROELECTRONICS-PM8801 Datasheet
1Mb / 37P
   High-efficiency, IEEE 802.3at compliant, integrated PoE-PD interface and PWM controller
July 2013 Rev 2
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


датащи скачать

Go To PDF Page


ссылки URL




Конфиденциальность
ALLDATASHEETRU.COM
Вашему бизинису помогли Аллдатащит?  [ DONATE ] 

Что такое Аллдатащит   |   реклама   |   контакт   |   Конфиденциальность   |   обмен ссыками   |   поиск по производителю
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com