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Texas Instruments UCC28704 | Demoboard UCC28704EVM-724

UCC28704 5V/10W Off-Line Power Supply With PSR for USB Wall Adapters Evaluation Module

Overview

TopologyFlyback Converter
Input voltage85-265 V
Output 15 V / 2 A

Description

The UCC28704EVM-724 is a 10-W off-line isolated power supply providing 5-V output on a USB-A port. The converter output voltage and current are regulated to 5% accuracy without using an optocoupler or secondary-side feedback circuits. The EVM demonstrates a low-cost solution to comply with global external power-supply efficiency standards (Department of Energy Level VI, EU Code of Conduct V5 Tier-2, etc.) without adding a secondary-side synchronous rectifier.

Features

Universal AC input range (85-V to 265-V AC), 5-V/2-A isolated output5% output voltage (CV) and current (CC) accuracy with primary-side regulation (PSR)83% average efficiency and <60-mW standby power performance exceeds DoE Level VI and EU CoC V5 Tier-2 EPS standards80-mV p-p output voltage ripple at end of 0.15-Ω cableFault protections: output overvoltage, overcurrent, and load short circuit

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesVINVOut1
(V)
IOut1
(A)
Vaux
(V)
Vaux 2
(V)
fswitch
(kHz)
L
(µH)
NPRI : NSEC : NAUXVT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MountSizeZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
750315841SPEC
4 files Active i| Production is active. Expected lifetime: >10 years.MID-OLTI Offline Flyback Transformers for Texas Instruments 85 - 265 V (AC) 5 2 11 16 60 750 13:1:2.25:3.25 3750 17.65 16.64 13.21 THT RM6
742792121SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 3.2 1.6 1.1 SMT 1206 300 330 110 MHz 3000 0.06 High Current
Order Code Data­sheet Simu­lation
750315841SPEC
742792121SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesVINVOut1
(V)
IOut1
(A)
Vaux
(V)
Vaux 2
(V)
fswitch
(kHz)
L
(µH)
NPRI : NSEC : NAUXVT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MountSizeZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples