SI3402 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > SI3402

Preview

SI3402: DescriptionOPTIMIZED CLASS 1 PD DESIGNS USING; File Size1MB，10 Pages; ManufacturerSILABS; Websitehttp://www.silabs.com

Download Datasheet Compare View All

SI3402 Overview

OPTIMIZED CLASS 1 PD DESIGNS USING

Preview

Download Datasheet

View All

AN525

PTIMIZED

LAS S

1 PD D

ESIGNS

SING

1. Introduction

The Si3402 is designed to support up to 20 W of input power with over 15 W of power delivered to the load. For this

reason, the standard reference designs have been optimized for high-power situations.

The IEEE standard for PoE (802.3 clause 33) specifies the PD classes as listed in Table 1.

THE

Si3402

Table 1. PD Classes

PD Classification

Class 0 or Class 3

Class 1

Class 2

Class 4

Input Power Maximum

13 W

3.84 W

6.49 W

25.5 W

Output Power Allowing for 80%

Conversion Efficiency

10.4 W

3.07 W

5.19 W

20.4 W

Even the 3 W of output power that can realistically be derived from a Class 1 interface is adequate for many

applications. This application note shows how the standard reference design is modified and simplified to support

lower power situations.

2. Optimized Reference Designs

Figure 1 shows the completed schematic of the Class 1 reference design for the isolated case, and Figure 2 shows

the reference design for the non-isolated case. Tables 2 and 3 are the bills of materials corresponding to Figures 1

and 2.

Rev. 0.2 7/11

AN525

SI3402 Related Products

	SI3402	AN525
Description	OPTIMIZED CLASS 1 PD DESIGNS USING	OPTIMIZED CLASS 1 PD DESIGNS USING

Recommended Resources

Homemade high-fidelity fever HI-FI amplifier 04

Typical two-stage low-pass filter circuit

MC145027 (general) infrared, ultrasonic or radio frequency remote control receiving and decoding circuit

LAS6350 switching boost voltage regulator circuit diagram

Single IC AM Modulator

Charge protection circuit for nickel-cadmium batteries

Subsequent development of drone somatosensory remote control: [i=s] This post was last edited by Brother Xuerui on 2017-8-24 22:15[/i] [align=center] [size=7]First, here are the pictures[/size][/align][size=5] For comparison, the left side is the entry for the c...; 雪瑞哥哥 MEMS sensors

【Low power consumption】Low power consumption system design using FPGA: ...; 常见泽1 FPGA/CPLD

How to quickly evaluate and develop industrial drive and servo control?: Industrial servo solutions are an application that many forum users are interested in. Let’s take a look at the leap forward that TI DesignDRIVE can bring! [b][size=3]System Solution[/size][/b] [url=h...; soso Microcontroller MCU

【Qinheng Trial】VI. PWM: This experiment uses the PWM module of CH549 to output 4 PWM waves with different duty cycles on pins P22, P23, P24, and P25, and uses a logic analyzer to detect the duty cycle. 1. Experimental resour...; lising DIY/Open Source Hardware

Here comes TI's new document "Tradeoffs and technologies required to increase power density": [i=s]This post was last edited by qwqwqw2088 on 2020-8-25 11:39[/i]Given limited space, the key to a successful design is often to reduce the size of the power supply !There is a constant challenge to...; qwqwqw2088 Analogue and Mixed Signal

How New Test Instruments Reduce Rack Space: Andrew Armutat Product Marketing Keithley InstrumentsReduce rack space . The new Keithley SMU uses a 2U [1] half-rack design, which greatly improves rack density. In actual situations, the capacity of...; Jack_ma Test/Measurement

Shortcut: S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SX SY SZ T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 TA TB TC TD TE TF TG TH TI TJ TK TL TM TN TO TP TQ TR TS TT TU TV TW TX TY TZ U0 U1 U2 U3 U4 U6 U7 U8 UA UB UC UD UE UF UG UH UI UJ UK UL UM UN UP UQ UR US UT UU UV UW UX UZ V0 V1 V2 V3 V4 V5 V6 V7 V8 V9 VA VB VC VD VE VF VG VH VI VJ VK VL VM VN VO VP VQ VR VS VT VU VV VW VX VY VZ W0 W1 W2 W3 W4 W5 W6 W7 W8 W9 WA WB WC WD WE WF WG WH WI WJ WK WL WM WN WO WP WR WS WT WU WV WW WY X0 X1 X2 X3 X4 X5 X7 X8 X9 XA XB XC XD XE XF XG XH XK XL XM XN XO XP XQ XR XS XT XU XV XW XX XY XZ Y0 Y1 Y2 Y4 Y5 Y6 Y9 YA YB YC YD YE YF YG YH YK YL YM YN YP YQ YR YS YT YX Z0 Z1 Z2 Z3 Z4 Z5 Z6 Z8 ZA ZB ZC ZD ZE ZF ZG ZH ZJ ZL ZM ZN ZP ZR ZS ZT ZU ZV ZW ZX ZY

Popular Components