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reference designUCC25800 | Demoboard UCC25800EVM-1

Texas Instruments UCC25800 | Demoboard UCC25800EVM-1

UCC25800 evaluation module for 2-W LLC converter with 6-V to 26-V DC input and 18-V and 5-V outputs

Overview

TopologyLLC Resonant Converter
Input voltage6-26 V
Output 1-5 V / 0.09 A
Output 218 V / 0.09 A

Description

This isolated open-loop LLC transformer driver converter is based on the device UCC25800 and has a pair of outputs, +18-V and -5-V, and provides output power up to 2 W from 6-V to 26-V DC input to provide isolated bias power to SiC MOSFET or IGBT gate drivers for traction inverter and industrial inverter applications. The LLC topology allows the transformer to have significant leakage inductance, but much smaller primary-to-secondary capacitance, which significantly reduces common-mode current injection through the bias transformer. The LLC converter based on UCC25800 offers a high level of integration, low cost and high efficiency in a compact form factor.

Features

  • UCC25800 2-W LLC converter with 6-V to 26-V dc input and 18-V and 5-V outputs
  • Provide isolated bias power to SiC MOSFET or IGBT gate drivers for traction inverter and industry inverter applications
  • Allow transformer with significant leakage inductance but much less primary-to secondary capacitance to reduce common-mode current injection
  • Offer a high level of integration, low cost and high efficiency in a compact form factor

Typical applications

  • UPS
  • Industrial motors, elevators and escalators
  • EV charging station, DC fast charging station, Automotive DC/DC converter, Automotive traction inverter & motor control, Automotive on-board charger (OBC)
  • solar inverter

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Winding Style
Number of windings
L1(µH)
Z(Ω)
IR(mA)
RDC max.(Ω)
VR(V)
Application
L1(µH)
L2(µH)
IR(A)
IR 2(A)
ISAT(A)
RDC1 typ(Ω)
RDC2 typ(Ω)
RDC1 max(Ω)
RDC2 max(Ω)
fres(MHz)
Type
Pins
PCB/Cable/Panel
Modularity
Wire Section
SamplesAvailability & Sample
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744273102
SPECWE-SL5 HC SMT Common Mode Line Filter, sectional, 2
Simu­lation
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Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-SL5 HC SMT Common Mode Line Filter
Winding Stylesectional 
Number of windings2 
Inductance [1]11 µH
Impedance1000 Ω
Rated Current2500 mA
DC Resistance [1]0.03 Ω
Rated Voltage80 V
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Pins4 
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7448700015
SPECWE-DD SMT Shielded Coupled Inductor, –, –
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-DD SMT Shielded Coupled Inductor
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Inductance 11.5 µH
Inductance 21.5 µH
Rated Current8.6 A
Rated Current 28.6 A
Saturation Current17.5 A
DC Resistance 10.012 Ω
DC Resistance 20.012 Ω
DC Resistance 10.016 Ω
DC Resistance 20.016 Ω
Self Resonant Frequency60 MHz
TypeCrossed 
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691313710002
SPECWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header, –, –
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header
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ApplicationPCB Header 
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TypeClosed Horizontal Plug entry 
Pins2 
PCB/Cable/PanelPCB 
ModularityNo 
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691313710003
SPECWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header, –, –
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 3137 - 5.00 mm Close Horizontal PCB Header
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ApplicationPCB Header 
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TypeClosed Horizontal Plug entry 
Pins3 
PCB/Cable/PanelPCB 
ModularityNo 
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691352710002
SPECWR-TBL Series 3527 - 5.00 mm Vertical, –, –
Simu­lation–
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Downloads3 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 3527 - 5.00 mm Vertical
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ApplicationPlug with Rising Cage Clamp 
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TypeVertical Cable Entry 
Pins2 
PCB/Cable/PanelCable 
ModularityNo 
Wire Section 28 to 12 (AWG) 0.2 to 2.5 (mm²)
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691352710003
SPECWR-TBL Series 3527 - 5.00 mm Vertical, –, –
Simu­lation–
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Downloads3 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 3527 - 5.00 mm Vertical
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ApplicationPlug with Rising Cage Clamp 
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TypeVertical Cable Entry 
Pins3 
PCB/Cable/PanelCable 
ModularityNo 
Wire Section 28 to 12 (AWG) 0.2 to 2.5 (mm²)
–Check availability