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reference designUCC28740 | Demoboard PMP30285_REVB

Texas Instruments UCC28740 | Demoboard PMP30285_REVB

Overview

TopologyFlyback Converter
Input voltage120-437 V
Output 15 V / 2 A
Output 28 V / 0.3 A
IC revisionB

Description

The PMP30285 reference design uses the UCC28740 flyback controller to generate two outputs (5V @ 2A / 8V @ 0.3A) from an 120VAC to 437VAC input. The negative terminal of the 5V output is connected to the primary side (LINE). A transformer with a common mode cancellation winding is used to lower the EMI. The UCC28740 uses an optical coupler to regulate the output and to improve transient response. The valley-switching technique reduces switching losses and keeps the efficiency high.

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Parts approved by Texas Instruments

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Order Code
Data­sheet
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Downloads
Status
Product series
ISAT(A)
fres(MHz)
IR(A)
L(µH)
RDC max.(Ω)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
SamplesAvailability & Sample
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768772681
SPECWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage), 0.76 A, 2.5 MHz
Simu­lation
Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage)
Saturation Current0.76 A
Self Resonant Frequency2.5 MHz
Rated Current0.52 A
Inductance680 µH
DC Resistance1.68 Ω
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Length7.8 mm
Width7.8 mm
Height9.5 mm
MountTHT 
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750317049
SPECTransformer, 0.95 A, –
Simu­lation
Availability
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Downloads4 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product series Transformer
Saturation Current0.95 A
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Inductance1100 µH
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Insulation Test Voltage4000 V (AC)
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Length22.2 mm
Width25 mm
Height16 mm
MountTHT 
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744822110
SPECWE-CMB Common Mode Power Line Choke, –, –
Simu­lation
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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Rated Current1 A
Inductance10000 µH
DC Resistance0.36 Ω
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length17.5 mm
Width13 mm
Height22 mm
MountTHT 
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