IEEE 802.3 af/at-Compatible PoE
Power Device Interface with
13W High-frequency PSR Flyback Converter
![]()
- Parameters
- Features
- Description
| Part Number | SY23212ATQQ |
|---|
| Description | POE PD+PSR Flyback convertor |
|---|
| Vin_min (V) | |
|---|
| Vin_max (V) | |
|---|
| Po_max (W) | 13 |
|---|
| Integrated FETs | |
|---|
| BV (V) | |
|---|
| Application | Isolation |
|---|
| No Load Loss | |
|---|
| Package | QFN4X5-28 |
|---|
- Supports the IEEE 802.3 af/at Standard
- 100V, 0.45Ω Hot-swap Switch
- Adaptor ORing Support Power up to 13W(Input) PDs
- Primary Side Control and Internal Current Sense to Minimize Components Number
- QR-mode Operation and PWM/PFM Control for High Efficiency
- Integrate 180V,0.65Ω MOSFET for Converter
- RoHS Compliant and Halogen Free
- Compact Package: QFN4x5-28
The SY23212A is a combined Power over Ethernet (PoE) powered device (PD) solution with PD interface and optimized PSR Flyback converter integrated.
The SY23212A supports the IEEE 802.3 af/at Standard as a 13W powered device. It includes detection and classification modes, a 100V hot-swap switch, as well as the maintain power signature function. To achieve higher efficiency and better EMI performance, the SY23212A drives Flyback converters in Quasi-Resonant mode and adaptive PWM/PFM control, the maximum switching frequency is up to 600 kHz. The internal 180V, 0.65Ω MOSFET achieves good thermal performance in compact package, QFN4X5-28.
The SY23212A provides comprehensive and reliable protections including OLP, VCC OVP, cycle by cycle peak current limit, internal OTP, etc.
Evaluation Board
Photo of evaluation board
Photo of evaluation board
The EVB_SY23212ATQQ is intended for evaluating IEEE 802.3 af/at-Compatible PoE Power Device Interface with 13W High-frequency PSR Flyback Converter
