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reference designUCC256404 | Demoboard PMP31179

Texas Instruments UCC256404 | Demoboard PMP31179

400-W AC/DC reference design for avionics

Overview

TopologyLLC Resonant Converter
Input voltage200-260 V
Switching frequency0.4-0.8 kHz
Output 130 V / 13.3 A
IC revision1

Description

This is a compact, 30-V DC, 400-W reference design for avionics applications that works with mains frequency between 400 Hz and 800 Hz. A two-phase interleaved transition mode (TM) power factor correction (PFC) based on UCC28064A is used to correct power factor and minimizes harmonic content of input current. The DC/DC is implemented using the HB-LLC stage with UCC256404. Efficiency is further improved by using synchronous rectification on the secondary side.

Features

  • Overall efficiency of > 92% at full load with 92.8% peak efficiency
  • High power factor > 0.99, meets PFC regulations and current THD for DO-160 avionics requirements
  • ZCS avoidance feature and OVP sensing feature in LLC controller improve robustness and protect systems from overcurrent, short circuit and overvoltage to ensure safety
  • Board dimensions of 218.44 mm x 102.26 mm, height = 31.75 mm

Typical applications

  • Aircraft cockpit display
  • Power conversion system (PCS)

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
VR(V (DC))
Size
Qmin.
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
H(mm)
Fl(mm)
Packaging
Operating Temperature
Q
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
Pitch(mm)
Ø D(mm)
SamplesAvailability & Sample
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885012007048
SPECWCAP-CSGP MLCCs 50 V(DC), 3.3 pF, ±0.5pF
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance3.3 pF
Capacitance±0.5pF 
Rated Voltage50 V (DC)
Size0805 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length2 mm
Width1.25 mm
Height0.6 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor466 
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885012006051
SPECWCAP-CSGP MLCCs 50 V(DC), 10 pF, ±5%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance10 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor600 
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885012006054
SPECWCAP-CSGP MLCCs 50 V(DC), 33 pF, ±5%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance33 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885012006023
SPECWCAP-CSGP MLCCs 16 V(DC), 100 pF, ±5%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance100 pF
Capacitance±5% 
Rated Voltage16 V (DC)
Size0603 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885012006057
SPECWCAP-CSGP MLCCs 50 V(DC), 100 pF, ±5%
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance100 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885342006003
SPECWCAP-CSMH Mid and High Voltage, 100 pF, ±5%
Simu­lation
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Downloads8 files

RF & Microwave simulation models

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSMH Mid and High Voltage
Capacitance100 pF
Capacitance±5% 
Rated Voltage250 V (DC)
Size0603 
Q-Factor [1]1000 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885012008070
SPECWCAP-CSGP MLCCs 100 V(DC), 330 pF, ±5%
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
Capacitance330 pF
Capacitance±5% 
Rated Voltage100 V (DC)
Size1206 
Q-Factor [1]1000 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length3.2 mm
Width1.6 mm
Height0.8 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885012006061
SPECWCAP-CSGP MLCCs 50 V(DC), 470 pF, ±5%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance470 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor1000 
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885012206082
SPECWCAP-CSGP MLCCs 50 V(DC), 680 pF, ±10%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance680 pF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012206083
SPECWCAP-CSGP MLCCs 50 V(DC), 1 nF, ±10%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance1 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012206108
SPECWCAP-CSGP MLCCs 100 V(DC), 1 nF, ±10%
Simu­lation
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
Capacitance1 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012206040
SPECWCAP-CSGP MLCCs 16 V(DC), 10 nF, ±10%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
Capacitance10 nF
Capacitance±10% 
Rated Voltage16 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor3.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885342208009
SPECWCAP-CSMH Mid and High Voltage, 10 nF, ±10%
Simu­lation
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Downloads8 files

RF & Microwave simulation models

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSMH Mid and High Voltage
Capacitance10 nF
Capacitance±10% 
Rated Voltage500 V (DC)
Size1206 
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Height1.25 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
Q-Factor600 
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885012206069
SPECWCAP-CSGP MLCCs 25 V(DC), 47 nF, ±10%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance47 nF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor3.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012206095
SPECWCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance100 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor3 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012207128
SPECWCAP-CSGP MLCCs 100 V(DC), 100 nF, ±10%
Simu­lation
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 100 V(DC)
Capacitance100 nF
Capacitance±10% 
Rated Voltage100 V (DC)
Size0805 
Q-Factor [1]600 
Dissipation Factor2.5 %
Insulation Resistance1 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012207102
SPECWCAP-CSGP MLCCs 50 V(DC), 470 nF, ±10%
Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Capacitance470 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0805 
Q-Factor [1]600 
Dissipation Factor3 %
Insulation Resistance1.1 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012206076
SPECWCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance1 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0603 
Q-Factor [1]600 
Dissipation Factor10 %
Insulation Resistance0.5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012207078
SPECWCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10%
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance1 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0805 
Q-Factor [1]600 
Dissipation Factor5 %
Insulation Resistance0.5 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012208064
SPECWCAP-CSGP MLCCs 25 V(DC), 1 µF, ±10%
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance1 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size1206 
Q-Factor [1]600 
Dissipation Factor3.5 %
Insulation Resistance0.5 GΩ
Ceramic TypeX7R Class II 
Length3.2 mm
Width1.6 mm
Height1.15 mm
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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885012207079
SPECWCAP-CSGP MLCCs 25 V(DC), 2.2 µF, ±10%
Simu­lation
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 25 V(DC)
Capacitance2.2 µF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0805 
Q-Factor [1]600 
Dissipation Factor10 %
Insulation Resistance0.05 GΩ
Ceramic TypeX7R Class II 
Length2 mm
Width1.25 mm
Height1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Operating Temperature -55 °C up to +125 °C
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861011385023
SPECWCAP-AIG8 Aluminum Electrolytic Capacitors, 330 µF, ±20%
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-AIG8 Aluminum Electrolytic Capacitors
Capacitance330 µF
Capacitance±20% 
Rated Voltage400 V (DC)
Size30.0 x 30.0 
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Dissipation Factor20 %
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Length30 mm
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PackagingTray 
Operating Temperature -25 °C up to +85 °C
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Endurance 2000
Ripple Current2050 mA
Leakage Current2640 µA
Pitch10 mm
Diameter30 mm
–Check availability
860080678021
SPECWCAP-ATLI Aluminum Electrolytic Capacitors, 680 µF, ±20%
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors
Capacitance680 µF
Capacitance±20% 
Rated Voltage50 V (DC)
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Dissipation Factor8 %
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Length25 mm
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PackagingAmmopack 
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Endurance 5000
Ripple Current2490 mA
Leakage Current340 µA
Pitch5 mm
Diameter13 mm
–Check availability
860160575031
SPECWCAP-ATLL Aluminum Electrolytic Capacitors, 1000 µF, ±20%
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-ATLL Aluminum Electrolytic Capacitors
Capacitance1000 µF
Capacitance±20% 
Rated Voltage35 V (DC)
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Dissipation Factor12 %
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Length30 mm
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PackagingAmmopack 
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Endurance 6000
Ripple Current2136 mA
Leakage Current350 µA
Pitch5 mm
Diameter10 mm
–Check availability
7443081030
SPECWE-HCM SMT High Current Flat Wire Inductor, –, –

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
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Size1078 
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Length9.4 mm
Width6.2 mm
Height7.8 mm
Pad Dimension1.8 mm
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Operating Temperature -40 °C up to +125 °C
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Inductance300 nH
Rated Inductance140 nH
Rated Current38 A
Saturation Current @ 10%28.9 A
Saturation Current @ 30%34.6 A
DC Resistance0.29 mΩ
Self Resonant Frequency33 MHz
MaterialMnZn 
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750318984
SPECHalf-Bridge Transformer, –, –
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Product series Half-Bridge Transformer
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750318974
SPECPower Inductor, –, –
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iProduction is active. Expected lifetime: >10 years.
Product series Power Inductor
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