UCC24630 UCC24630 同期整流コントローラ、低消費電力待機付き | TIJ.co.jp

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UCC24630 同期整流コントローラ、低消費電力待機付き



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.


  • 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


他の製品と比較 同期整流(SR)コントローラ メール Excelへダウンロード
Part number オーダー・オプション Frequency (Max) (kHz) UVLO thresholds on/off (V) Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
UCC24630 ご注文 200     4/3.6     Compatible with CCM     -40 to 125     SOT-23 | 6     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
UCC24610 ご注文 600     4.4/4.2     SYNC pin for CCM     -40 to 125     SOIC | 8
SON | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8SON: 9 mm2: 3 x 3 (SON | 8)    
UCC24612 ご注文 1000     4.5/4     Proportional gate drive     -40 to 125     SOT-23 | 5     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
UCC24624 ご注文 700     4.5/4     Proportional gate drive     -40 to 125     SOIC | 8     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)    
UCC24636 ご注文 130     4/3.6     USB Type-C Compatible     -40 to 125     SOT-23 | 6     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)