IC manufacturers Texas Instruments

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Texas Instruments UCC28711 | Demoboard TIDA-00173

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

Overview

TopologyOther Topology
Switching frequency130 kHz

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 regulationProtection against input UV/OV, output overload, short-circuit and loss of feedbackLow-cost solution by implementing primary-side regulation (eliminates feedback loop) and use of 1000V rated MOSFETSsQuasi-resonant mode controller improves EMI performanceDesigned to comply to IEC 61800-5REMARK: Schematic,BOM and pdf is added

Typical applications

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

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT
(A)
fres
(MHz)
VersionMountZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples
7447462022SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-TI Radial Leaded Wire Wound Inductor 2.2 6.3 4.3 65 Heat Shrinking Tube THT 0.02
768772102SPEC
8 files Active i| Production is active. Expected lifetime: >10 years.WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) 1000 0.5 0.55 1.8 Standard THT 2.08
74279244SPEC
9 files Active i| Production is active. Expected lifetime: >10 years.WE-CBF SMT EMI Suppression Ferrite Bead 1 SMT SMT 850 1250 50 MHz 1500 0.1 High Current
Order Code Data­sheet Simu­lation
7447462022SPEC
768772102SPEC
74279244SPEC
Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)
IR
(A)
ISAT
(A)
fres
(MHz)
VersionMountZ @ 100 MHz
(Ω)
Zmax
(Ω)
Test Condition ZmaxIR 2
(mA)
RDC max.
(Ω)
Type Samples