IC manufacturers Texas Instruments

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Texas Instruments UCC28704 | Demoboard PMP20545

80V/50W PSR Flyback Reference Design

Overview

TopologyFlyback Converter
Input voltage85-265 V
Output 112 V
Output 280 V / 0.62 A
IC revisionA

Description

This reference design is a universal line 85-265VAC input to 80V/50W power supply in a small form-factor, cost-effective design. It uses the UCC28704 controller. The design features an optional FET-startup circuit for low standby power and achieves over 91% efficiency. The PMP20545 Board is a 4-layer, 1-oz copper weight per layer, 80mm x 60mm board with 24mm max component height. This design is Non-isolated.

Features

Remark: BOM and test-result PDF are added.

Features85VAC-265VAC input to 80V/50W outputOver 91% efficiency at full loadOptional FET startup circuit enables lower standby powerGood thermal perfomance given small transformer size1oz, 4-layer board measuring 80mm x 60mm x 24mm size

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesApplicationCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples
890324024002SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-FTX2 Film Capacitors Across the mains220 nF X2 240 0.130 GΩ -40 °C up to +105 °C 12.5 Bulk 275 15 7 12.5 Boxed THT
744821201SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMB Common Mode Power Line Choke -40 °C up to +125 °C 2 1 45 250 1500 MnZn 15 7.8 18 THT
Order Code Data­sheet Simu­lation
890324024002SPEC
744821201SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesApplicationCSafety ClassdV/dt
(V/µs)
DF @ 1 kHz
(%)
RISOOperating TemperaturePitch
(mm)
PackagingIR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Mount Samples