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

(ACTIVE) TIDA-00173

Description & Features

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Key Document

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

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  




Parametrics
 TIDA-00173.1
(Output Voltage 1)
Vin (Min) (V)400
Vin (Max) (V)1200
Vout (Nom) (V)24
Iout (Max) (A)2
Output Power (W)48
Isolated/Non-IsolatedIsolated
Input TypeDC
TopologyFlyback- Quasi Resonant

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
LMS33460  Ultra Low Power Space Saving 3V Under Voltage Detector  Power Management  Sample & Buy Not Available
UCC28711  Constant-Voltage, Constant-Current PWM Controller with Primary-Side Regulation  Offline and Isolated DC/DC Controllers and Converters  Sample & Buy View Design Kits & Evaluation Modules

Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 6374 06 Nov 2014 631
Design files (6)
Title Abstract Type Size (KB) Date Views
ZIP 2305 09 Oct 2014 137
ZIP 904 09 Oct 2014 266
ZIP 795 09 Oct 2014 93
ZIP 233 09 Oct 2014 102
PDF 133 09 Oct 2014 136
PDF 338 09 Oct 2014 954


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