| Not recommended for new design as of 17-Feb-2011 |
The FSFR-US series are a highly integrated power switches designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFRUS series simplifies designs and improves productivity, while improving performance. The FSFR-US series combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current controlled oscillator, frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit has a common-mode noise cancellation capability, which guarantees stable operation with excellent noise immunity. The fast-recovery body diode of the MOSFETs improves reliability against abnormal operation conditions, while minimizing the effect of the reverse recovery. Using the zero-voltage-switching (ZVS) technique dramatically reduces the switching losses and efficiency is significantly improved. The ZVS also reduces the switching noise noticeably, which allows a small-sized Electromagnetic Interference (EMI) filter.
The FSFR-US series can be applied to various resonant converter topologies such as series resonant, parallel resonant, and LLC resonant converters.
• Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topology• High Efficiency through Zero Voltage Switching (ZVS)• Internal UniFETs with Fast-Recovery Type Body Diode• Fixed Dead Time (350ns) Optimized for MOSFETs• Up to 300kHz Operating Frequency• Auto-Restart Operation for All Protections with An External LVCC• Protection Functions: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)
| Product | Product & Eco Status | Replacement Part Number | Packaging & Packing Info | **Package Marking Convention | Qualification Support | Compliance Certificates |
|---|---|---|---|---|---|---|
| FSFR1800US |
Not recommended for new design as of 17-Feb-2011 Green as of Jun 2010 |
FSFR1800XS |
SIP 9L Details RAIL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &E (Space) &E (Space) &3 (3-Digit Date Code) &K
Line 2:FSFR1800US
|
FIT :
7.6
RƟJC : 10.44 °C/W Moisture Sensitivity Level (MSL) : NA Show more... |
|
| FSFR1800USL |
Not recommended for new design as of 17-Feb-2011 Green as of Apr 2010 |
FSFR1800XSL |
SIP 9L Details RAIL |
Line 1:$Y (Fairchild logo) &Z (Plant Code) &E (Space) &E (Space) &E (Space) &3 (3-Digit Date Code) &K
Line 2:FSFR1800USL
|
FIT :
7.6
RƟJC : 10.44 °C/W Moisture Sensitivity Level (MSL) : NA Show more... |
| Application Note | Description |
|---|---|
| AN-4151 | Half-Bridge LLC Resonant Converter Design Using FSFR-Series Fairchild Power Switch (FPS™)(1,113 K) 15-May-2012 |
| AN-4148 | Audible Noise Reduction Techniques for FPS™ Applications(220 K) 17-Jun-2011 |
| AN-4141 | Troubleshooting and Design Tips for Fairchild Power Switch (FPS™) Flyback Applications(200 K) 26-Jan-2012 |
| AN-4140 | Transformer Design Consideration for Offline Flyback Converters Using Fairchild Power Switch (FPS™)(1,116 K) 17-Apr-2013 |
FSFR2100 Demo - Fairchild Power Switch (FPS™) for Half-Bridge Resonant Converters
FSFR2100 - LLC Resonant Converter Solutions