IC manufacturers Analog Devices

IC manufacturers (96)

Analog Devices LT4276 | Demoboard DC2262A-A

LT4276, LT4321 PoE with Synchronous Forward and Ideal Diode Bridge

Overview

TopologyForward Converter
Input voltage37-57 V
Output 15 V / 13 A
IC revisionA

Description

Demonstration circuit 2262 is a PoE Powered Device (PD) with a synchronous forward isolated power supply featuring the LT®4276 and an ideal diode bridge controller (LT4321).The LT4276 provides IEEE802.3af (PoE, Type 1), IEEE802.3at (PoE+, Type 2), and LTPoE++ PD interfacing and power supply control. When the PD is connected to a PSE, the LT4276 turns on an external, low-resistance, high-power N-channel Hot Swap™ FET. The LT4276 controls a high-power, small-sized power supply that utilizes a highly efficient, synchronously rectified, active clamp forward topology. The LT4321 provides further efficiency improvement by minimizing bridge losses.

Products

Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
VersionVINVOut1
(V)
IOut1
(A)
Vaux
(V)
nSizeIR
(A)
L1
(mH)
RDC max.
(Ω)
VR
(V (AC))
VT
(V (DC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples
744314490SPEC
8 files WE-HCI SMT Flat Wire High Current Inductor 4.9 8.3 2.2 6.5 14.5 56 SMT 7050 Superflux 7 6.9 4.8 SMT
750313095SPEC
9 files WE-PoE++ Power over Ethernet Plus Plus Transformer 175 Forward 40 - 57 V (DC) 5 17 10.75 3.5:1:2.25 EFD20 2400 23.11 29.08 11.43 SMT
749022016SPEC
10/100/1000 Base-T SMT Transformer 350 1500 18.16 16 10.16 SMT
7446632002SPEC
8 files WE-LF SMT Common Mode Power Line Choke 2200 SMT SH 2.75 2.2 0.1 250 1500 MnZn 23.3 18.5 11.5
Order Code Data­sheet Simu­lation
744314490SPEC
750313095SPEC
749022016SPEC
7446632002SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Product seriesL
(µH)
IRP,40K
(A)
ISAT,10%
(A)
ISAT,30%
(A)
RDC
(mΩ)
fres
(MHz)
VersionVINVOut1
(V)
IOut1
(A)
Vaux
(V)
nSizeIR
(A)
L1
(mH)
RDC max.
(Ω)
VR
(V (AC))
VT
(V (DC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples