Flyback Regulator with Primary Side CV/CC Control for Adapters and Chargers
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- Parameters
- Features
- Description
| Part number | SY22852FAC |
|---|
| Channel(#) | 1 |
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| Vin (min) (V) | 18 |
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| Vin (max) (V) | 75 |
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| Topology | PSR flyback |
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| Switching frequency (min)(kHz) | |
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| Switching frequency (max)(kHz) | 120 |
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| Vout (min) (V) | Programmable |
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| Vout2 (min)(V) | |
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| Vout (max) (V) | Programmable |
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| Vout2 (max )(V) | |
|---|
| Vref accuracy (±%) | 1.5 |
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| Vout accuracy(±%) | |
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| Control mode | Peak current mode |
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| Duty cycle (max)(%) | |
|---|
| Operation mode | PWM/PFM |
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| Iq (typ) (uA) | 1000 |
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| Features | PSR CV/CC,QR Flyback |
|---|
| Package | SO8 |
|---|
| Operating temperature range(°C) | -40 to 125 |
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| Functional safety category | |
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- Integrated 200V MOSFET
- Primary side CV/CC control eliminates the opto-coupler
- Valley turn-on of the primary MOSFET to achieve low switching losses
- Low start up current: 15μA typical
- Maximum switching frequency limitation 120kHz
- Compact package: SO8
SY22852 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, SY22852 drives Flyback converters in the Quasi-Resonant mode.
Evaluation Board
Photo of evaluation board
Photo of evaluation board
The EVB_SY22852FAC is used to evaluate a PWM controller with several features to enhance performance of Flyback converters.
