IC manufacturers Texas Instruments

IC manufacturers (99)

Texas Instruments UCC28740 | Demoboard PMP31140

Offline supercapacitor backup power supply with passive cell balancing reference design

Overview

TopologyFlyback Converter
Input voltage195-480 V
IC revisionB

Description

This reference design introduces an offline single-stage supercapacitor charger. Isolated constant-voltage constant-current flyback controller UCC28740 charges three supercapacitors in series directly from a wide input (195 VAC to 480 VAC). The supercapacitor output voltage is limited to 6.5 V.

Features

  • Resonant-ring valley-switching operation
  • Super capacitor voltage limit of 6.5 V
  • Wide input voltage range of 195 VAC to 480 VAC
  • Output over-voltage and over-current protection
  • Complete tested design with available design files and test report

Typical applications

  • Polyphase electricity meter

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesCVR
(V (DC))
Endurance
(h)
Operating TemperatureIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Pitch
(mm)
Ø D
(mm)
L
(mm)
Packaging Samples
860010678024SPEC
7 files Active i| Production is active. Expected lifetime: >10 years.WCAP-ATG8 Aluminum Electrolytic Capacitors1000 µF 50 2000 -40 °C up to +85 °C 1485 500 10 5 13 25 Ammopack
750319952SPEC
Active i| Production is active. Expected lifetime: >10 years. Offline Transformer
Order Code Data­sheet Simu­lation
860010678024SPEC
750319952SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesCVR
(V (DC))
Endurance
(h)
Operating TemperatureIRIPPLE
(mA)
ILeak
(µA)
DF
(%)
Pitch
(mm)
Ø D
(mm)
L
(mm)
Packaging Samples