Offline flyback switching regulator integrates a 900 V MOSFET for AC/DC power supplies. Peak-current-mode control supports transient response and loop compensation, while burst mode reduces standby power at light load. The switching frequency is externally programmable up to 300 kHz and includes frequency jittering for EMI reduction. Protection functions include VCC undervoltage lockout, VCC overvoltage protection, overload protection, short-circuit protection, and over-temperature protection. Package options include SOIC14-11 and PDIP8-7EP, and the device is lead-free, halogen-free, and RoHS compliant.
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| Product Type | Offline switching regulator |
| Topology | Flyback |
| Integrated MOSFET Voltage Rating | 900V |
| Maximum Programmable Switching Frequency | 300kHz |
| Typical Operating Frequency | 104kHz |
| Frequency Jittering Range | ±4% |
| VCC Operating Range | 10.1 to 24.5V |
| Operating Junction Temperature | -40 to 125°C |
| Drain Breakdown Voltage | 900 minV |
| On-State Resistance at 25°C | 17 typΩ |
| On-State Resistance at 125°C | 26 typΩ |
| VCC Switch-On Threshold | 13.0 typV |
| VCC Switch-Off Threshold | 9.4 typV |
| VCC Overvoltage Protection Level | 26.0 typV |
| Maximum Current Set Point | 0.97 typV |
| Short-Circuit Protection Set Point | 1.42 typV |
| Thermal Shutdown Threshold | 150°C |
| ESD Capability, Human Body Model | 2.0kV |
| Package Options | SOIC14-11, PDIP8-7EP |
| RoHS | Compliant |
| Lead Free | Yes |
| Halogen Free | Yes |
These are design resources that include the Monolithic Power Systems HF900
Reference design for the Monolithic Power Systems HF900, a high-voltage flyback regulator featuring an integrated 900V MOSFET for offline power supply applications.
