IC manufacturers Texas Instruments

IC manufacturers (96)

Texas Instruments UCC25800-Q1 | Demoboard PMP23240

3-W LLC bias supply with dual 18-V output reference design

Overview

TopologyLLC Resonant Converter
Input voltage11.4-12.6 V
Output 118 V / 0.09 A
IC revisionA

Description

This reference design uses a single UCC25800-Q1 to drive two LLC transformers with 600-kHz switching frequency. The transformer used in this design is 750319177 which is an off-the-shelf catalog transformer featuring low-interwinding capacitance of 0.68-pF typical which is beneficial for minimizing common-mode current in gate driver bias applications with high slew rates. This design generates two isolated 18-V rails. Each output can be loaded to 1.5 W.

Features

78.8% peak efficiencyCatalog, off-the-shelf transformer with 0.68-pF interwinding capacitanceSingle-sided assembly

Typical applications

  • Three phase UPS
  • Single phase online UPS

More information

Products

Order Code Data­sheet Downloads Product seriesVIN
(V)
VOut1
(V)
PO
(W)
CWW 1
(pF)
L
(µH)
∫Udt
(µVs)
fswitch
(kHz)
nVersionIC Reference Samples
750319177SPEC
7 files WE-AGDT Auxiliary Gate Drive Transformer 7.5 13 4.55 0.68 16.5 36 500 1:1.67 LLC UCC25800
Order Code Data­sheet
750319177SPEC
Samples
Order Code Data­sheet Downloads Product seriesVIN
(V)
VOut1
(V)
PO
(W)
CWW 1
(pF)
L
(µH)
∫Udt
(µVs)
fswitch
(kHz)
nVersionIC Reference Samples