Berechnungstool
UCC24630
Synchroner Gleichrichtercontroller mit extrem niedrigem Standby-Strom
Datenblatt
UCC24630
- Secondary-Side SR Controller Optimized for 5-V to 24-V Flyback Systems
- Operating Frequency Up to 200 kHz
- Volt-Second Balance SR On-Time Control
- Minimize Effect of MOSFET Device and Layout Inductance
- CCM Operation Compatibility
- Compatible with PSR and SSR Control
- Auto Low-Power Detect and 110-µA Standby Mode Current
- Wide VDD Range from 3.6 V to 28 V
- Rail-to-Rail Gate Driver with 13-V Clamp
- Open and Short Pin Fault Protection
The UCC24630 SR controller is a high-performance controller and driver for N-channel MOSFET power devices used for secondary-side synchronous rectification.
The combination of controller and MOSFET emulates a near-ideal diode rectifier. This solution not only directly reduces power dissipation of the rectifier but also reduces primary-side losses as well, due to compounding of efficiency gains.
Utilizing a volt-second balancing control method, the UCC24630 is ideal for flyback power supplies over a wide-output voltage range since the device is not connected directly to the MOSFET drain. The SR drive turn-off threshold is not dependent on the MOSFET RDS(on) which allows optimizing for maximum conduction time. Also secondary current ringing due to device and layout inductance does not affect the SR turn-off threshold.
The UCC24630 controller offers a programmable false-trigger filter, a frequency detector to automatically switch to standby mode during low power conditions and pin fault protections. The UCC24630 is compatible with DCM, TM and CCM operation.
The wide VDD operating range, wide programming range of the VPC voltage and blanking time, allows use in a variety of flyback converter designs.
Technische Dokumentation
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Alle anzeigen 4 | Typ | Titel | Datum | ||
|---|---|---|---|---|
| * | Data sheet | UCC24630 Synchronous Rectifier Controller With Ultra-Low-Standby Current datasheet (Rev. A) | PDF | HTML | 30 Mär 2015 |
| Application note | UCC24630 and UCC24636 SR-Control Configurations Guide | 18 Dez 2017 | ||
| EVM User's guide | Using the UCC24630EVM-636 65-W AC-to-DC Adapter (Rev. B) | 12 Dez 2016 | ||
| Technical article | Achieving low standby power and high efficiency in flyback converters | PDF | HTML | 27 Jul 2015 |
Design und Entwicklung
Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.
Evaluierungsplatine
UCC24630EVM-636 — UCC24630 65 W, AC/DC-Adapter
This is a high efficiency 65W AC/DC design using UCC24630 Synchronous Rectification Controller for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI performance requirements for external power supplies.
Benutzerhandbuch: PDF
Referenzdesigns
TIDA-00702 — Hocheffiziente Stromversorgung für den industriellen Einsatz mit 60 W, 24 V und Präzisionsbegrenzer
The TIDA-00702 is a 60-W, industrial AC-DC power supply designed for use in industrial and instrumentation systems such as process controls, factory automation, and machinery control. This reference design is a Quasi-resonant (QR) flyback converter implemented using the UCC28740 CC-CV flyback (...)
Referenzdesigns
TIDA-00701 — 100 W, 24 V, hoher Wirkungsgrad, hoher PF, industrielle Stromversorgung mit Präzisionsstrom- und Lei
TIDA-00701 is a 100W, 24V, Industrial AC-DC power supply designed for use in Industrial & Instrumentation systems such as process controls, factory automation and machinery control. This reference design has front end Power Factor Correction (PFC) circuit designed using UCC28051 PFC controller, (...)
Referenzdesigns
TIDA-00519 — 65 W, Hocheffizienter CoC-5 Tier2/DOE Level VI-AC-Adapter
This is a high efficiency 65W AC/DC design for a Universal input (85Vac to 265Vac) to 19.5V @3.33A output exceeding CoC-5 Tier2 and DOE Level VI requirements for external power supplies using the LM5023 Quasi-Resontant Flyback Controller with UCC24630 Synchronous Rectification Controller and (...)
Schaltplan: PDF
Referenzdesigns
PMP11329 — Universal-Leitung bis 13 Volt bei 4,6 Ampere, Stromversorgung – Referenzdesign
Universal line to 13 volt at 60 watts power supply. This is a synchronous fly back operating in continuous conduction mode using TI's synchronous rectifier controller on the secondary.
Referenzdesigns
PMP10145 — Referenzdesign für synchronen 38-W-Offline-Flyback-Wandler mit AC/DC-Übergangsmodus
The PMP10145 reference design uses the UCC28610 flyback controller for the transition mode flyback topology. It generates an isolated output (9V@4.22A) from a wide AC input voltage range (80VAC - 291VAC). The controller maintains discontinuous mode operation and valley switching over the entire (...)
Referenzdesigns
PMP11281 — Referenzdesign für PSR-Flyback-Stromversorgung mit universellem AC-Eingang, 5 V/10 A/50 W, mit durch
PMP11281 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 88% average (...)
Referenzdesigns
PMP11232 — Referenzdesign für PSR-Flyback-Stromversorgung mit universellem AC-Eingang, 5 V/6 A/30 W, mit durchs
PMP11232 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 89.5% average (...)
Referenzdesigns
PMP10974 — Referenzdesign für PSR-Flyback-Stromversorgung mit universellem AC-Eingang, 5 V/10 A/50 W, mit durch
PMP10974 is a quasi-resonant Flyback power suppy based on the UCC28730 primary side regulation (PSR) controller. The elimination of optocoupler using PSR topology promises higher reliability and lower system cost. The design achieves less than 40mW standby power losses and over 89% average (...)
Referenzdesigns
PMP10164 — Referenzdesign für isolierten synchronen Flyback-Wandler mit universellem Wechselspannungseingang un
The PMP10164 reference design supplies 10.5V@1.8A from universal AC mains; the isolated Flyback topology is the most used for low power range due to single magnetic component. Since the load is a power line communication chip, a fixed frequency modulation has been chosen. The controller LM5021 (...)
Referenzdesigns
PMP11216 — Synchron-Gleichrichter-Controller-Tochterkarte – Referenzdesign
The UCC24630 SR controller is a high performance controller and driver for N-channel MOSFET power devices used in secondary side synchronous rectification. Using a volt-second balance control method, the UCC24630 is ideal for flyback power supplies over a wide output voltage range since the IC is (...)
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