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reference designUCC28711D | Demoboard TIDA-00173

Texas Instruments UCC28711D | Demoboard TIDA-00173

400-V to 690-V AC Input, 50-W Flyback Isolated Power Supply Reference Design for Motor Drives

Overview

TopologyFlyback Converter
Input voltage400-690 V
Output 124 V
Output 216 V
Output 36 V
IC revisionE2

Description

This reference design provides isolated +24V (45W), ±16 V (4.5W), and +6V (0.5W) outputs to power the control electronics in variable speed drives. The power supply can be either powered directly from 3-phase AC mains (380Vac to 690Vac) or can be powered from the DC-link voltage (400Vdc to 1200Vdc). This design uses a quasi-resonant flyback topology and is rated for 50-Watt total output power. The line and load regulation of the power supply is designed to be within 5% using primary-side regulation (eliminating costly feedback components). The power supply is designed to meet the clearance, creepage, and isolation test voltages as per IEC61800-5 requirements.

Features

  • Versatile input: can be either 400V-1200V DC or 380V-690V AC
  • <5% line and load regulation.
  • Protection against input UV/OV, output overload, short-circuit and loss of feedback
  • Low-cost solution by implementing primary-side regulation (eliminates feedback loop) and use of 1000V rated MOSFETSs
  • Quasi-resonant mode controller improves EMI performance
  • Designed to comply to IEC 61800-5

Typical applications

  • Solar Inverters
  • Servo Drives
  • UPS Systems
  • Industrial Inverters
  • Variable Speed ac and dc Drives

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT,10%(A)
fres(MHz)
Version
ISAT(A)
Mount
VIN
VOut1(V)
IOut1(A)
VOut2(V)
IOut2(A)
VOut3(V)
IOut3(A)
Vaux(V)
fswitch(kHz)
NPRI : NSEC : NAUX
VT(V (AC))
Size
L(mm)
W(mm)
H(mm)
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
SamplesAvailability & Sample
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7447462022
SPECWE-TI Radial Leaded Wire Wound Inductor, 2.2 µH, 6.3 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TI Radial Leaded Wire Wound Inductor
Inductance2.2 µH
Rated Current6.3 A
Saturation Current @ 10%5.7 A
Self Resonant Frequency65 MHz
VersionHeat Shrinking Tube 
Saturation Current4.3 A
MountTHT 
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Size5075 
Length6 mm
Width6 mm
Height8.5 mm
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DC Resistance0.02 Ω
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–Check availability
768772102
SPECWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage), 1000 µH, 0.5 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-TI HV Radial Leaded Wire Wound Inductor (High Voltage)
Inductance1000 µH
Rated Current0.5 A
Saturation Current @ 10%0.55 A
Self Resonant Frequency1.8 MHz
VersionStandard 
Saturation Current0.55 A
MountTHT 
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Size8095 
Length7.8 mm
Width7.8 mm
Height9.5 mm
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DC Resistance2.08 Ω
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750342585
SPECWE-OLTI Offline Flyback Transformers, 2500 µH, –

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
Availability
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Downloads11 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-OLTI Offline Flyback Transformers
Inductance2500 µH
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Saturation Current0.0062 A
MountTHT 
Input Voltage 400 - 690 V (AC)
Output Voltage 124 V
Output Current 12 A
Output Voltage 216 V
Output Current 20.14 A
Output Voltage 316 V
Output Current 30.14 A
Auxiliary Voltage16 V
Switching Frequency 68
Turns Ratio35.5:1:2:2:0.75:2 
Insulation Test Voltage3800 V (AC)
SizeETD29 
Length35.56 mm
Width24.38 mm
Height44.2 mm
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74279244
SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, 1 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-CBF SMT EMI Suppression Ferrite Bead
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Rated Current1 A
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VersionSMT 
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MountSMT 
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Size1806 
Length4.5 mm
Width1.6 mm
Height1.6 mm
Impedance @ 100 MHz850 Ω
Maximum Impedance1250 Ω
Maximum Impedance50 MHz 
Rated Current 21500 mA
DC Resistance0.1 Ω
TypeHigh Current 
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