Topology | Flyback Converter |
Input voltage | 85-560 V |
Switching frequency | 21-53 kHz |
Output 1 | 24 V / 0.2 A |
Output 2 | 3.3 V / 0.3 A |
Output 3 | 5 V / 0.3 A |
IC revision | 2.1 |
The TEA1721 is a small and low cost module Switched Mode Power Supply (SMPS) controller IC for low power applications (up to 5 W) and operates directly from the rectified universal mains input. The device includes a high voltage power switch (700 V) and has been optimized for flyback converter topologies to provide high-efficiency over the entire load range with ultra-low power consumption in the no-load condition. It provides a circuitfor start-up directly from the rectified mains voltage without any external bleeder circuits.The converter operates as a regulated voltage source from no-load up to the maximum output current and operates as current source that delivers the maximum current over a broad output voltage range. Using the TEA1721, a low power converter can be built at minimum cost and with the minimum number of external components.The controller regulates the output voltage with primary-side sensing which eliminates the need for an additional secondary feedback circuitry and simplifies the design. At higher power levels, a frequency and current control mode is used. It operates with burst mode control at low power levels and no-load condition. The burst mode minimizes audiblenoise and provides an energy saver state which reduces the power consumption in no-load condition. The Burst mode frequency of 905 Hz enables no-load power consumption below < 20 mW at high mains input.
Order Code | Datasheet | Simulation | Downloads | Status | Product series | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
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744862250 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TFC Common Mode Power Line Choke | 0.25 | 25 | 3.6 | 300 | 2500 | MnZn | 17 | 11.5 | 17 | THT |
Samples |
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Order Code | Datasheet | Simulation | Downloads | Status | Product series | IR (A) | L (mH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
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