IC manufacturers Texas Instruments

IC manufacturers (103)

Texas Instruments UCC28720 | Demoboard PMP8678

High Voltage Input (184Vac…707Vac) to 12V@1A, 3.3V@100mA Non-isolated Flyback Reference Design

Overview

TopologyFlyback Converter
Input voltage184-275 V
Output 112 V / 1 A
IC revisionC

Description

The UCC28720 is a quasi resonant controller and is specialized to drive high voltage BJTs. When the drain voltage is higher than 1KV, BJTs are the best choice for low to mid power flyback converters. In this case two voltages are supplied: 12V@1A and 3.3V@100mA.

Features

  • Over 84% efficiency at full load
  • Over 70% efficiency at 10% load
  • Provides 12V and 3.3V outputs
  • Works continuously up to 440Vac input and survives 1KVpeak surge

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT(A)
RDC max.(Ω)
VT(V (AC))
Material
fres(MHz)
Version
Mount
Samples
WE-SPC SMT Power Inductor, 47 µH, 0.66 A
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance47 µH
Rated Current0.66 A
Saturation Current1 A
DC Resistance0.608 Ω
Self Resonant Frequency10 MHz
VersionSMT 
MountSMT 
WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage), 1000 µH, 0.5 A
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance1000 µH
Rated Current0.5 A
Saturation Current0.55 A
DC Resistance2.08 Ω
MaterialNiZn 
Self Resonant Frequency1.8 MHz
VersionStandard 
MountTHT 
750314382
Flyback Transformer, 4500 µH, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Product series Flyback Transformer
Inductance4500 µH
Saturation Current0.48 A
Insulation Test Voltage3300 V (AC)
MountTHT