Overview
The FAN602FMX is an advanced offline quasi-resonant PWM controller developed by onsemi. This integrated circuit is designed to achieve high power density in universal input range AC/DC flyback isolated power supplies, targeting applications that require high efficiency and low standby power consumption. The FAN602FMX incorporates quasi-resonant (QR) control with proprietary Valley Switching, which reduces switching losses and enhances system efficiency across a wide range of input and output conditions.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40°C | 125°C | ||
| Package | 10-Lead SOIC, JEDEC MS-012 | |||
| Voltage-Sense Section - Maximum VS Source Current Capability | 3 mA | |||
| VS Sampling Blanking Time 1 after GATE Pin Pull-Low | 0.9 μs | 1.1 μs | 1.37 μs | |
| VS Sampling Blanking Time 2 after GATE Pin Pull-Low | 1.6 μs | 1.8 μs | 2.1 μs | |
| GATE Output Turn-Off Delay | 100 ns | 200 ns | ||
| Leading-Edge Blanking Time | 150 ns | 200 ns | ||
| Maximum On Time | 18 μs | 20 μs | 23 μs | |
| Gate Output Clamping Voltage | 6.8 V | 7.5 V | 8.2 V |
Key Features
- High Efficiency: Achieves high efficiency across wide input and output conditions through quasi-resonant switching and Valley Switching with limited frequency variation.
- Low Standby Power: Features mWSaver® technology for ultra-low standby power consumption (<20 mW).
- Programmable Burst Mode: User-configurable burst mode entry and exit to maximize light-load efficiency and minimize audible noise.
- Protection Features: Built-in and user-configurable Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), and Over-Temperature Protection (OTP).
- High-Voltage Startup: Built-in high-voltage startup to reduce external components.
- EMI Reduction: Forced and inherent frequency modulation of valley switching for low EMI emissions and common mode noise.
- Precise Output Current Regulation: Programmable line compensation for precise constant output current regulation.
- Adaptive Burst Mode: Adaptive burst mode entry level for adaptive charger applications.
Applications
- Battery Chargers: Suitable for battery chargers for smartphones, feature phones, and tablet PCs.
- AC-DC Adapters: Ideal for AC-DC adapters for portable devices that require CV/CC control.
Q & A
- What is the operating temperature range of the FAN602FMX?
The operating temperature range of the FAN602FMX is -40°C to +125°C.
- What type of package does the FAN602FMX come in?
The FAN602FMX comes in a 10-Lead SOIC (Small Outline Integrated Circuit) package, JEDEC MS-012.
- What is the maximum VS source current capability of the FAN602FMX?
The maximum VS source current capability is 3 mA.
- How does the FAN602FMX reduce switching losses?
The FAN602FMX reduces switching losses through quasi-resonant switching and Valley Switching with limited frequency variation.
- What is the purpose of the mWSaver® technology in the FAN602FMX?
The mWSaver® technology is used to achieve ultra-low standby power consumption (<20 mW).
- Can the burst mode entry and exit be configured in the FAN602FMX?
Yes, the burst mode entry and exit can be user-configured to maximize light-load efficiency and minimize audible noise.
- What protection features are built into the FAN602FMX?
The FAN602FMX includes built-in and user-configurable Over-Voltage Protection (OVP), Under-Voltage Protection (UVP), and Over-Temperature Protection (OTP).
- How does the FAN602FMX reduce EMI emissions?
The FAN602FMX reduces EMI emissions through forced and inherent frequency modulation of valley switching.
- What is the purpose of the high-voltage startup feature in the FAN602FMX?
The high-voltage startup feature reduces the need for external components.
- Is the FAN602FMX still in production?
No, the FAN602FMX is scheduled for obsolescence and will be discontinued by the manufacturer once stock is depleted.
