Overview
The FSFR2100XS is a highly integrated power switch designed by onsemi for high-efficiency half-bridge resonant converters. This component simplifies the design process while enhancing productivity and performance. It combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current controlled oscillator, a frequency limit circuit, soft-start, and built-in protection functions. The high-side gate-drive circuit features common-mode noise cancellation, ensuring stable operation with excellent noise immunity. The use of zero-voltage-switching (ZVS) technique significantly reduces switching losses and improves efficiency, also minimizing switching noise and allowing for a smaller EMI filter.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VDS Maximum Drain-to-Source Voltage | - | - | 500 | V |
| LVCC Low-Side Supply Voltage | -0.3 | - | 25.0 | V |
| HVCC High-Side Floating Supply Voltage | -0.3 | - | 525.0 | V |
| RDS(ON) On-State Resistance | - | 0.41 | 0.51 | Ω |
| IDM Drain Current Pulsed | - | - | 32 | A |
| TJ Maximum Junction Temperature | - | - | 150 | °C |
| PD Total Power Dissipation | - | - | 12.0 | W |
| Operating Frequency | - | - | 300 kHz | - |
Key Features
- Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topology
- High Efficiency through Zero Voltage Switching (ZVS)
- Internal UniFET™ with Fast-Recovery Body Diode
- Fixed Dead Time (350 ns) Optimized for MOSFETs
- Up to 300 kHz Operating Frequency
- Auto-Restart Operation for All Protections with External LVCC
- Protection Functions: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD)
Applications
- PDP and LCD TVs
- Desktop PCs and Servers
- Adapters
- Telecom Power Supplies
Q & A
- What is the FSFR2100XS used for?
The FSFR2100XS is used for high-efficiency half-bridge resonant converters, simplifying designs and improving productivity and performance.
- What are the key components of the FSFR2100XS?
The FSFR2100XS combines power MOSFETs with fast-recovery type body diodes, a high-side gate-drive circuit, an accurate current controlled oscillator, a frequency limit circuit, soft-start, and built-in protection functions.
- What is the maximum operating frequency of the FSFR2100XS?
The maximum operating frequency of the FSFR2100XS is up to 300 kHz.
- What protection functions does the FSFR2100XS have?
The FSFR2100XS includes Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over-Current Protection (AOCP), and Internal Thermal Shutdown (TSD).
- What is the maximum junction temperature of the FSFR2100XS?
The maximum junction temperature of the FSFR2100XS is 150°C.
- What is the total power dissipation of the FSFR2100XS?
The total power dissipation of the FSFR2100XS is 12.0 W.
- What are the typical applications of the FSFR2100XS?
The FSFR2100XS is typically used in PDP and LCD TVs, desktop PCs and servers, adapters, and telecom power supplies.
- How does the FSFR2100XS improve efficiency?
The FSFR2100XS improves efficiency through the use of zero-voltage-switching (ZVS) technique, which reduces switching losses and minimizes switching noise.
- What is the significance of the fast-recovery body diode in the FSFR2100XS?
The fast-recovery body diode improves reliability against abnormal operation conditions and minimizes the effect of reverse recovery.
- Is the FSFR2100XS still in production?
No, the FSFR2100XS is obsolete and no longer manufactured. Recommended substitutes include the NCP13992ACDR2G.
