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Texas Instruments UCC28720 | Demoboard PMP8678

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

Details

TopologieSperrwandler
Eingangsspannung184-275 V
Ausgang 112 V / 1 A
IC-RevisionC

Beschreibung

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.

Eigenschaften

  • 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

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVinVOut1
(V)
IOut1
(A)
fswitch
(kHz)
L
(mH)
NPRI : NSEC : NAUXISAT
(mA)
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC max.
(Ω)
fres
(MHz)
Version Muster
750314382SPEC
4 Dateien MID-OLTI Offline Flyback Transformers for Texas Instruments 113 - 707 V (AC) 12 1.8 50 4.5 15:1 480 3300 22.25 14.4 23.24 THT EE20/10/6
74408942470SPEC
8 Dateien WE-SPC SMT-Speicherdrossel 0.047 1000 4.8 4.8 2.8 SMT 4828 0.66 0.608 10 SMT
768772102SPEC
8 Dateien WE-TI HV Tonneninduktivität (High Voltage) 1 550 7.8 7.8 9.5 THT 8095 0.5 2.08 1.8 Standard
Artikel Nr. Daten­blatt Simu­lation
750314382SPEC
74408942470SPEC
768772102SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieVinVOut1
(V)
IOut1
(A)
fswitch
(kHz)
L
(mH)
NPRI : NSEC : NAUXISAT
(mA)
VT
(V (AC))
L
(mm)
W
(mm)
H
(mm)
MontageartBauformIR
(A)
RDC max.
(Ω)
fres
(MHz)
Version Muster