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reference designUCC28065 | Demoboard PMP31276

Texas Instruments UCC28065 | Demoboard PMP31276

288W PFC, LLC and bidirectional battery charger reference design

Overview

TopologyPower Factor Correction
Input voltage85-265 V
Output 124 V / 12 A
IC revisionJULY 2026

Description

This reference design is an AC/DC battery-backup charger with two outputs: system and battery. A 4-SW bidirectional buck-boost charges the battery and supplies system load. An optional microcontroller disables main power sections, reducing stand-by power while collecting parameters for telemetry.

Features

Cycle-by-cycle overcurrent protectionDiscontinuous conduction mode (DCM) and continuous conduction mode (CCM) operationLow standby powerUltra-wide input range

Typical applications

  • Fire Alarm control panel

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
C
Tol. C
Size
Operating Temperature
Safety Class
VIMP(V (DC))
DF(%)
RISO
Ceramic Type
Fl(mm)
Packaging
Application
dV/dt(V/µs)
DF @ 1 kHz(%)
Pitch(mm)
Qmin.
Q
L(mH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(Ω)
fres(MHz)
Wire Type
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
Ø D(mm)
IR(A)
L1(mH)
RDC max.(Ω)
VR(V (DC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
SamplesAvailability & Sample
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885012006054
SPECWCAP-CSGP MLCCs 50 V(DC), 33 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)
Capacitance33 pF
Capacitance±5% 
Size0603 
Operating Temperature -55 °C up to +125 °C
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Q-Factor1000 
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Rated Voltage50 V (DC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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–Check availability
885012206083
SPECWCAP-CSGP MLCCs 50 V(DC), 1 nF, ±10%
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)
Capacitance1 nF
Capacitance±10% 
Size0603 
Operating Temperature -55 °C up to +125 °C
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–
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Q-Factor [1]600 
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Rated Voltage50 V (DC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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–Check availability
8853522130151
SPECWCAP-CSSA Interference Suppression, 2.2 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-CSSA Interference Suppression
Capacitance2.2 nF
Capacitance±10% 
Size2211 
Operating Temperature -55 °C up to +125 °C
Safety ClassX1 / Y2 
Impulse Voltage5000 V (DC)
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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Rated Voltage250 V (DC)
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Length5.7 mm
Width2.8 mm
Height2.5 mm
MountSMT-Chip 
–Check availability
885012206087
SPECWCAP-CSGP MLCCs 50 V(DC), 4.7 nF, ±10%
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)
Capacitance4.7 nF
Capacitance±10% 
Size0603 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Q-Factor [1]600 
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Rated Voltage50 V (DC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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–Check availability
885342208009
SPECWCAP-CSMH Mid and High Voltage, 10 nF, ±10%
Simu­lation
Availability
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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% 
Size1206 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.6 mm
Packaging7" Tape & Reel 
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Q-Factor600 
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Rated Voltage500 V (DC)
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Length3.2 mm
Width1.6 mm
Height1.25 mm
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–Check availability
885012206095
SPECWCAP-CSGP MLCCs 50 V(DC), 100 nF, ±10%
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 nF
Capacitance±10% 
Size0603 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor3 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Q-Factor [1]600 
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Rated Voltage50 V (DC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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–Check availability
885012206125
SPECWCAP-CSGP MLCCs 50 V(DC), 220 nF, ±5%
Simu­lation
Availability
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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 50 V(DC)
Capacitance220 nF
Capacitance±5% 
Size0603 
Operating Temperature -55 °C up to +125 °C
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Dissipation Factor10 %
Insulation Resistance2.3 GΩ
Ceramic TypeX7R Class II 
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Q-Factor [1]600 
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Rated Voltage50 V (DC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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–Check availability
890334024003
SPECWCAP-FTXX Film Capacitors, 330 nF, ±10%
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-FTXX Film Capacitors
Capacitance330 nF
Capacitance±10% 
SizePitch: 12.5 mm 
Operating Temperature -40 °C up to +105 °C
Safety ClassX2 
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Insulation Resistance30 GΩ
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PackagingBulk 
ApplicationAcross the mains 
Rate of Voltage Rise260 V/µs
Dissipation Factor0.1 %
Pitch12.5 mm
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Rated Voltage310 V (DC)
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Length15 mm
Width8.5 mm
Height14 mm
MountBoxed THT 
–Check availability
861141484010
SPECWCAP-AI3H Aluminum Electrolytic Capacitors, 120 µF, ±20
Simu­lation
Availability
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Downloads8 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-AI3H Aluminum Electrolytic Capacitors
Capacitance120 µF
Capacitance±20 
Size25.0 x 30.0 
Operating Temperature -25 °C up to +105 °C
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Dissipation Factor20 %
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PackagingTray 
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Pitch10 mm
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Endurance 3000
Ripple Current840 mA
Leakage Current697 µA
Diameter25 mm
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Rated Voltage450 V (DC)
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Length30 mm
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MountSnap-In 
–Check availability
74466340007
SPECWE-LF SMD Common Mode Power Line Choke in SMT, –, –
Simu­lation
Availability
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Downloads11 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LF SMD Common Mode Power Line Choke in SMT
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SizeSH 
Operating Temperature -40 °C up to +125 °C
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Pad Dimension2.1 mm
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Inductance0.7 mH
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DC Resistance0.03 Ω
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Rated Current5.25 A
Inductance [1]0.7 mH
DC Resistance [1]0.03 Ω
Rated Voltage250 V (DC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length23.3 mm
Width18.5 mm
Height11.5 mm
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–Check availability
750314724
SPECPower Inductor, –, –
Simu­lation–
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product series Power Inductor
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74437529203221
SPECWE-HCF SMT High Current Inductor, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCF SMT High Current Inductor
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Size2920 
Operating Temperature -40 °C up to +125 °C
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Inductance0.22 mH
Performance Rated Current8.15 A
Saturation Current @ 10%4.1 A
Saturation Current @ 30%5.3 A
DC Resistance0.0401 Ω
Self Resonant Frequency2.8 MHz
Wire TypeRound 
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MaterialMnZn 
Length25 mm
Width28 mm
Height20.5 mm
MountSMT 
–Check availability