IC-Hersteller Texas Instruments

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Texas Instruments UCC28730 | Demoboard TIDA-01560

15W Dual Isolated Output Bias Power Supply with 4mW Zero Standby Power Consumption Reference Design

Details

TopologieSperrwandler
Eingangsspannung85-265 V
Schaltfrequenz76-90 kHz
Ausgang 112 V / 1.12 A
Ausgang 23.3 V / 0.3 A
IC-RevisionE1

Beschreibung

This reference design is a 15-W bias power supply with two isolated outputs (12 V/1.125A and 3.3 V/0.3A) and a total standby power consumption of 4 mW under a 220-V AC input. The controller uses primary-side regulation (PSR) and detects a wake-up signal from the UCC24650 secondary-side voltage-droop monitor for improved transient response to large load steps. This reference design demonstrates how the UCC28730 can provide ultra-low standby power without sacrificing start-up time or output transient response with an internal 700-V start-up switch, dynamically controlled operating states, and a tailored modulation profile. The UCC28730 uses frequency modulation, peak primary current modulation, valley switching, and valley skipping in its control algorithm to maximize efficiency over the entire operating range.

Eigenschaften

Enables zero-power standby consumption: 3.1 mW at 115-V AC Input4.2 mW at 220-V AC InputAverage efficiency >84%, exceeds DoE VI and CoC tier 2 specificationsPrimary-side regulation (PSR) eliminates optocoupler and increase reliability of bias power supplyResonant-ring valley-switching operation for highest overall efficiencyUniversal input voltage range (85V to 270V AC) to address customer needs across all regionsDual isolated outputs of 12V and 3.3V is suitable for most industry applicationsFrequency-dither to ease EMI compliance

Typische Anwendungen

  • Standby and Auxiliary Power Supplies / Adapters and Chargers for Smart Phones, line ranges. / TV and Monitor Power Supplies

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieVinVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
Vaux
(V)
fswitch
(kHz)
NPRI : NSEC : NAUXISAT
(A)
Bauformfres
(MHz)
VersionIR
(A)
L
(µH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Montageart Muster
750343769SPEC
5 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.MID-OLTI Offline Flyback Transformers for Texas Instruments 85 - 265 V (AC) 12 1.125 3.3 0.3 12 50 16.8 : 2.4 : 1 : 2.4 EFD20 620 3000 21.5 29 12.4 THT
744821201SPEC
10 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-CMB Stromkompensierte Netzdrossel XS THT 2 1000 45 250 1500 MnZn 15 7.8 18 THT
7447462471SPEC
8 Dateien Aktiv i| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.WE-TI Tonneninduktivität 0.4 5075 3.4 Schrumpfschlauch 0.35 470 2400 6 6 8.5 THT
Artikel Nr. Daten­blatt Simu­lation
750343769SPEC
744821201SPEC
7447462471SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads Status ProduktserieVinVOut1
(V)
IOut1
(A)
VOut2
(V)
IOut2
(A)
Vaux
(V)
fswitch
(kHz)
NPRI : NSEC : NAUXISAT
(A)
Bauformfres
(MHz)
VersionIR
(A)
L
(µH)
RDC max.
(mΩ)
VR
(V (AC))
VT
(V (AC))
MaterialL
(mm)
W
(mm)
H
(mm)
Montageart Muster