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reference designUCC256304 | Demoboard PMP21251

Texas Instruments UCC256304 | Demoboard PMP21251

Less than 90mW Ultra-low Standby Power Auxless AC-DC Power Supply Reference Design

Overview

TopologyPower Factor Correction
Input voltage90-264 V
Switching frequency35-1000 kHz
Output 112 V / 10.8 A
IC revisionB

Description

The PMP21251 reference design uses UCC28056 CRM/DCM PFC controller and UCC256304 enhanced LLC controller with integrated driver to provide 12V/10.8A output (continuous, 14.4A peak) from universal AC input. This design achieves 92.4% peak efficiency at 115VAC input and 94.0% peak efficiency at 230VAC input. The efficiency and power factor numbers also meet both 115V and 230V internal 80 PLUS gold specifications and DoE level VI requirement. In addition, the design is able to achieve as low as 89mW power consumption at 230VAC input and no load without turning off PFC.

Features

  • Hybrid Hysteretic Control (HHC)– Best-in-Class Transient Response– Easy Compensation Design
  • Optimized Low Power Features Enable 75 mWStandby Power Design with PFC on– Advanced Burst Mode
  • Opto-Coupler Low Power Operation– Helps Enable Compliance to CoC Tier IIStandard
  • Fast Exit from Burst Mode
  • Improved Capacitive Region Avoidance Scheme
  • Adaptive Dead-Time
  • Internal High-Side Gate Drivers (0.6-A and 1.2-A Capability)
  • Robust Soft Start with No Hard Switching
  • Over Temperature, Output Over Voltage, InputOver and Under Voltage Protection withThree Levels of Over Current Protections
  • Wide Operating Frequency Range(35 kHz to 1 MHz)
  • Nemko Certification for X Cap Discharge Function
  • Wide DC Input Range
  • Enables Wide AC Input Range
  • PFC Startup Not Required For LLC Startup

Typical applications

  • AC-DC Adapter / Merchant DC-to-DC / High Power Battery Charging / ATX Power Supply
  • Multi-Axis Servo
  • Multi-Functional Printers / Projectors
  • LED Lighting Applications
  • High Power Battery Charging
  • Digital TV SMPS / Appliances

More information

Products

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Order Code
Data­sheet
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Product series
Application
C
Safety Class
dV/dt(V/µs)
DF @ 1 kHz(%)
RISO
Pitch(mm)
Packaging
Tol. C
Operating Temperature
DF(%)
Ceramic Type
Fl(mm)
IR(A)
L(mH)
RDC max.(mΩ)
VR(V (AC))
VT(V (AC))
Material
L(mm)
W(mm)
H(mm)
Mount
VIN
VOut1(V)
IOut1(A)
Vaux(V)
fswitch(kHz)
n
LS(µH)
ISAT(A)
IR(A)
RDC 1(mΩ)
RDC 2(mΩ)
RDC 3(mΩ)
RDC 4(mΩ)
Size
SamplesAvailability & Sample
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890324023023CS
SPECWCAP-FTX2 Film Capacitors, Across the mains, 100 nF
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTX2 Film Capacitors
ApplicationAcross the mains 
Capacitance100 nF
Safety ClassX2 
Rate of Voltage Rise300 V/µs
Dissipation Factor0.1 %
Insulation Resistance30 GΩ
Pitch10 mm
PackagingCarton 
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
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Rated Voltage275 V (AC)
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Length13 mm
Width7 mm
Height13 mm
MountBoxed THT 
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890324023028CS
SPECWCAP-FTX2 Film Capacitors, Across the mains, 220 nF
Simu­lation
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTX2 Film Capacitors
ApplicationAcross the mains 
Capacitance220 nF
Safety ClassX2 
Rate of Voltage Rise300 V/µs
Dissipation Factor0.1 %
Insulation Resistance30 GΩ
Pitch10 mm
PackagingCarton 
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
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Rated Voltage275 V (AC)
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Length13 mm
Width8 mm
Height14 mm
MountBoxed THT 
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890324024005
SPECWCAP-FTX2 Film Capacitors, Across the mains, 470 nF
Simu­lation
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-FTX2 Film Capacitors
ApplicationAcross the mains 
Capacitance470 nF
Safety ClassX2 
Rate of Voltage Rise280 V/µs
Dissipation Factor0.1 %
Insulation Resistance21.28 GΩ
Pitch12.5 mm
PackagingBulk 
Capacitance±10% 
Operating Temperature -40 °C up to +105 °C
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Rated Voltage275 V (AC)
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Length15 mm
Width10 mm
Height16 mm
MountBoxed THT 
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SizePitch: 12.5 mm 
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744821201
SPECWE-CMB Common Mode Power Line Choke, –, –
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Downloads11 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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Operating Temperature -40 °C up to +125 °C
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Rated Current2 A
Inductance1 mH
DC Resistance45 mΩ
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length15 mm
Width7.8 mm
Height18 mm
MountTHT 
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Rated Current2 A
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SizeXS 
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744823210
SPECWE-CMB Common Mode Power Line Choke, –, –
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Downloads11 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CMB Common Mode Power Line Choke
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Operating Temperature -40 °C up to +125 °C
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Rated Current2 A
Inductance10 mH
DC Resistance125 mΩ
Rated Voltage250 V (AC)
Insulation Test Voltage1500 V (AC)
MaterialMnZn 
Length23 mm
Width13.8 mm
Height26.5 mm
MountTHT 
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Rated Current2 A
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SizeM 
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7447021
SPECWE-FI Leaded Toroidal Line Choke, –, –
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-FI Leaded Toroidal Line Choke
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Operating Temperature -40 °C up to +105 °C
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Rated Current2.5 A
Inductance0.1 mH
DC Resistance80 mΩ
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Length16.5 mm
Width9.7 mm
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MountTHT 
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760895431
SPECWE-LLCR Resonant Converter, –, –
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LLCR Resonant Converter
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Operating Temperature -40 °C up to +125 °C
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Inductance0.6 mH
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Insulation Test Voltage4000 V (AC)
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Length36 mm
Width36 mm
Height26 mm
MountTHT 
Input Voltage 360 - 400 V (DC)
Output Voltage 112 V
Output Current 112.5 A
Auxiliary Voltage18 V
Switching Frequency 70 - 120
Turns Ratio35:2:2:3 
Leakage Inductance100 µH
Saturation Current2 A
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DC Resistance 1260 mΩ
DC Resistance 23.1 mΩ
DC Resistance 33.1 mΩ
DC Resistance 4144 mΩ
SizeETD34 
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885012206040
SPECWCAP-CSGP MLCCs 16 V(DC), –, 10 nF
Simu­lation
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
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Capacitance10 nF
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Insulation Resistance10 GΩ
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Packaging7" Tape & Reel 
Capacitance±10% 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor3.5 %
Ceramic TypeX7R Class II 
Pad Dimension0.4 mm
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Rated Voltage16 V (AC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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885012106018
SPECWCAP-CSGP MLCCs 16 V(DC), –, 2.2 µF
Simu­lation
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 16 V(DC)
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Capacitance2.2 µF
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Insulation Resistance0.05 GΩ
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Packaging7" Tape & Reel 
Capacitance±20% 
Operating Temperature -55 °C up to +85 °C
Dissipation Factor10 %
Ceramic TypeX5R Class II 
Pad Dimension0.4 mm
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Rated Voltage16 V (AC)
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Length1.6 mm
Width0.8 mm
Height0.8 mm
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750316570
SPECPFC Inductor, –, –
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Status Activei| Production is active. Expected lifetime: >10 years.
Product series PFC Inductor
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