Overview
The FSL206MRN is a Green Mode Power Switch integrated circuit designed by onsemi, specifically for high-performance offline Switched-Mode Power Supplies (SMPS). This device combines an avalanche-rugged SENSEFET with a Current-Mode PWM control block, minimizing the need for external components. It is optimized for applications requiring high efficiency and robust protection features.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Drain-Source Breakdown Voltage (VDS) | - | - | 650 | V |
| Operating Frequency (fOSC) | 61 | 67 | 73 | kHz |
| No-Load Power Consumption | - | - | < 150 mW (without bias winding), < 25 mW (with bias winding) | mW |
| Maximum Duty Cycle | 66 | 72 | 78 | % |
| Peak Current Limit | 0.54 | 0.60 | 0.66 | A |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Operating Ambient Temperature | -40 | - | 125 | °C |
Key Features
- Internal Avalanche-Rugged SENSEFET with 650 V rating
- Precision Fixed Operating Frequency: 67 kHz
- No need for auxiliary bias winding
- Frequency Modulation for EMI attenuation
- Ultra-Low Operating Current: 300 µA
- Built-in Soft-Start and Startup Circuit
- Various Protections: Overload Protection (OLP), Over-Voltage Protection (OVP), Thermal Shutdown (TSD), Abnormal Over-Current Protection (AOCP), Line Under-Voltage Protection (LUVP)
- Burst-Mode operation for low standby power consumption
- Leading Edge Blanking (LEB) and Auto-Restart Mode for all protections
Applications
- Switched-Mode Power Supplies (SMPS) for Set-Top Boxes (STB), DVD, and DVCD players
- Auxiliary power supplies in various consumer electronics
Q & A
- What is the primary function of the FSL206MRN?
The FSL206MRN is designed for high-performance offline Switched-Mode Power Supplies (SMPS), integrating a PWM controller and an avalanche-rugged SENSEFET.
- What is the operating frequency of the FSL206MRN?
The operating frequency is 67 kHz.
- Does the FSL206MRN require an auxiliary bias winding?
No, it does not require an auxiliary bias winding.
- What are the key protection features of the FSL206MRN?
The device includes Overload Protection (OLP), Over-Voltage Protection (OVP), Thermal Shutdown (TSD), Abnormal Over-Current Protection (AOCP), and Line Under-Voltage Protection (LUVP).
- How does the FSL206MRN manage standby power consumption?
The device enters Burst-Mode operation to minimize power dissipation in standby mode.
- What is the purpose of the soft-start feature in the FSL206MRN?
The soft-start feature slowly increases the feedback voltage and SENSEFET current during startup to prevent transformer saturation and reduce stress on the secondary diode.
- What is Leading Edge Blanking (LEB) in the FSL206MRN?
LEB is a feature that blanks the current sense signal at the instant the SENSEFET is turned on to prevent false triggering due to primary-side capacitance and secondary-side rectifier diode reverse recovery.
- What is the maximum drain-source breakdown voltage of the FSL206MRN?
The maximum drain-source breakdown voltage is 650 V.
- What is the typical soft-start time of the FSL206MRN?
The typical soft-start time is 15 ms.
- What are the common applications of the FSL206MRN?
Common applications include SMPS for Set-Top Boxes (STB), DVD, and DVCD players, as well as auxiliary power supplies in various consumer electronics.
