IC manufacturers Texas Instruments

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Texas Instruments UCC27517ADBVR | Demoboard TIDA-010015

94.5% Efficiency, 500W industrial AC-DC reference design

Overview

TopologyFlyback Converter
Input voltage85-265 V
Switching frequency1000 kHz
Output 124 V / 21 A
IC revisionE1

Description

This reference design is a compact, high efficiency, 24-V DC, 500-W reference design for industrial AC/DC power supplies. This design consists of a front-end, two-phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28064A. This minimizes the PFC inductor size and reduces EMI filter requirements. The DC-DC is implemented using the HB-LLC stage implemented using TI's UCC256301 device. For efficiency improvement, synchronous rectification is used at secondary which uses the UCC24612.

Features

  • Overall efficiency of 94.5% at full load with peak efficiency > 95%
  • Up to 330-W operation without forced cooling
  • High power factor > 0.99 and meets PFC regulations and current THD as per IEC 61000-3- 2 Class A
  • Meets requirements of conducted emissions standard (EN55011 Class B)
  • ZCS avoidance feature and OVP sensing feature in LLC controller improves robustness and protects systems from overcurrent, short circuit, and overvoltage to ensure safety
  • Small 160 mm × 80 mm × 35 mm PCB form factor

Typical applications

  • DIN rail power supply
  • Consumer AC/DC
  • Industrial AC/DC
  • Battery charger

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CSizeOperating TemperatureQRISOCeramic TypeFl
(mm)
IR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountPins (Value)
(pcs)
RowsG
(mm)
GenderTypePackaging Samples
885012006023SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WCAP-CSGP MLCCs 16 V(DC)100 pF ±5% 0603 -55 °C up to +125 °C 100010 GΩ NP0 Class I 0.4 16 1.6 0.8 0.8 7" Tape & Reel
7448031501SPEC
10 files Active i| Production is active. Expected lifetime: >10 years.WE-CMBNC Common Mode Power Line Choke Nanocrystalline M -55 °C up to +125 °C 15 1 3.2 300 2100 Nanocrystalline 24 17 25 THT 4 5
7447076SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WE-FI Leaded Toroidal Line Choke -40 °C up to +105 °C 6.1 0.15 45 27.5 13.6 THT 15
61300111121SPEC
6 files Active i| Production is active. Expected lifetime: >10 years.WR-PHD 2.54 mm THT Pin Header -40 °C up to +105 °C1000 MΩ 3 2.54 THT 1 Single Pin Header Straight Bag
Order Code Data­sheet Simu­lation
885012006023SPEC
7448031501SPEC
7447076SPEC
61300111121SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCTol. CSizeOperating TemperatureQRISOCeramic TypeFl
(mm)
IR
(A)
L
(mH)
RDC max.
(mΩ)
VR
(V (DC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
MountPins (Value)
(pcs)
RowsG
(mm)
GenderTypePackaging Samples