Flyback Controller with Primary Side CV/CC Control For PoE
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- Parameters
- Features
- Description
| Part number |
SY23214AFAC |
| Channel(#) |
1 |
| Vin (min) (V) |
12 |
| Vin (max) (V) |
650 |
| Topology |
PSR flyback |
| Switching frequency (min)(kHz) |
|
| Switching frequency (max)(kHz) |
200 |
| Vout (min) (V) |
Programmable |
| Vout2 (min)(V) |
|
| Vout (max) (V) |
Programmable |
| Vout2 (max )(V) |
|
| Vref accuracy (±%) |
1.6 |
| Vout accuracy(±%) |
|
| Control mode |
Peak current mode |
| Duty cycle (max)(%) |
|
| Operation mode |
PWM/PFM |
| Iq (typ) (uA) |
350 |
| Features |
HV startup,PSR CV/CC,Auto-recovery SCP,Auto-recovery OVP,Auto-recovery OTP |
| Package |
SO8 |
| Operating temperature range(°C) |
-40 to 85 |
| Functional safety category |
|
- Tight Primary Side CV/CC Regulation
- HV Start-up Circuit Integrated
- PWM/PFM Control for Higher Average Efficiency
- Internal CC/CV Loop Compensation
- Maximum Switching Frequency Limitation 200kHz
- Driver Source/Sink Current:160mA/750mA
- Low Start-up Current: 3µA Maximum
- Reliable Protections for OVP, SCP, OTP
- RoHS Compliant and Halogen Free
- Compact Package: SO8
SY23214A is a single stage Flyback controller with HV start up circuit targeting at Constant Current/Constant Voltage (CC/CV) applications. Both the output current and voltage are sensed on the primary side, eliminating the opto-isolator and the secondary side feedback circuitry, and minimizing the overall system cost.
SY23214A adopts the quasi-resonant operation and the adaptive PWM/PFM control to achieve the highest average efficiency and the best EMI performance.
SY23214A provides reliable protections including VCC Over Voltage Protection, Short Circuit Protection (SCP), Over Temperature Protection (OTP), Output voltage OVP protection (OVP), and VSEN pin short protection.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SY23214AFAC is intended for evaluating a Flyback controller targeting with HV start up circuit at Constant Current/Constant Voltage (CC/CV) applications.
