| Part number | SY22851FAC |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 18 |
| Vin (max) (V) | 75 |
| Topology | PSR flyback |
| Switching frequency (min)(kHz) | |
| Switching frequency (max)(kHz) | 120 |
| Vout (min) (V) | Programmable |
| Vout2 (min)(V) | |
| Vout (max) (V) | Programmable |
| Vout2 (max )(V) | |
| Vref accuracy (±%) | 1.5 |
| Vout accuracy(±%) | |
| Control mode | Peak current mode |
| Duty cycle (max)(%) | |
| Operation mode | PWM/PFM |
| Iq (typ) (uA) | 1000 |
| Features | PSR CV/CC,QR Flyback |
| Package | SO8 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
SY22851 is a PWM controller with several features to enhance performance of Flyback converters. It integrates a 200V MOSFET to decrease physical volume. Both current and voltage regulation are achieved by primary side control technology for low cost application. To achieve higher efficiency and better EMI performance, SY22851 drives Flyback converters in the Quasi-Resonant mode.
Photo of evaluation board
Photo of evaluation board
The EVB_SY22851FAC is used to evaluate a PWM controller with several features to enhance performance of Flyback converters.
| Title | Date |
|---|---|
| Automotive_Solutions_Q2_2026 | 2026-06-12 |
| Silergy_Catalog_Q2_2026 | 2026-06-12 |
| SO8 | 2022-05-20 |
