Overview
The FSL116HR is an integrated Pulse Width Modulator (PWM) and SENSEFET® designed by onsemi for high-performance offline Switched-Mode Power Supplies (SMPS). This component is optimized for minimal external components, reducing the total component count, design size, and weight compared to discrete MOSFET and controller or RCC switching converter solutions. The FSL116HR combines an avalanche-rugged SENSEFET with a Current-Mode PWM control block, offering robust protective functions and efficient operation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | 105 | °C | |
| Drain-Source Breakdown Voltage (BVDSS) | 650 | V | ||
| Drain-Source On-State Resistance (RDS(ON)) | 7.3 | 10.0 | Ω | |
| Switching Frequency (fOSC) | 90 | 100 | 110 | KHz |
| Maximum Duty Cycle (DMAX) | 71 | 77 | 83 | % |
| UVLO Threshold Voltage (VSTART) | 11 | 12 | 13 | V |
| Thermal Shutdown (TSD) Temperature | 125 | 137 | 150 | °C |
| Maximum Output Power (Typical Continuous Power) | 11 W (Open Frame Adapter at 50°C ambient) | W | ||
| Package Type | 8-Lead, Dual Inline Package (DIP) |
Key Features
- Integrated Pulse Width Modulator (PWM) and SENSEFET® for high-performance offline SMPS.
- Avalanche-rugged SENSEFET and Current-Mode PWM control block.
- Protective functions include Overload Protection (OLP), Over-Voltage Protection (OVP), Output-Short Protection (OSP), and Thermal Shutdown (TSD).
- Leading-Edge Blanking (LEB) and frequency generator for EMI attenuation.
- Optimized gate turn-on/turn-off driver and temperature-compensated precision current sources for loop compensation and fault-protection circuitry.
- Good soft-start performance and auto-restart capability.
- Burst-Mode operation for reduced switching loss in Standby Mode.
Applications
- Offline Switched-Mode Power Supplies (SMPS) for home appliances.
- Adapters and open-frame adapters.
- High-efficiency power supplies requiring minimal external components.
Q & A
- What is the FSL116HR designed for?
The FSL116HR is designed for high-performance offline Switched-Mode Power Supplies (SMPS) with minimal external components.
- What protective functions does the FSL116HR include?
The FSL116HR includes Overload Protection (OLP), Over-Voltage Protection (OVP), Output-Short Protection (OSP), and Thermal Shutdown (TSD).
- What is the operating temperature range of the FSL116HR?
The operating temperature range is -40°C to 105°C.
- What is the typical switching frequency of the FSL116HR?
The typical switching frequency is 100 KHz.
- How does the Burst-Mode operation work in the FSL116HR?
Burst-Mode operation alternately enables and disables switching of the SENSEFET to reduce switching loss in Standby Mode.
- What is the maximum duty cycle of the FSL116HR?
The maximum duty cycle is 77% (typical).
- How does the Over-Voltage Protection (OVP) work in the FSL116HR?
OVP is activated if VCC exceeds 24 V, terminating the switching operation to prevent over-voltage conditions.
- What package type is the FSL116HR available in?
The FSL116HR is available in an 8-Lead, Dual Inline Package (DIP).
- What are some common applications of the FSL116HR?
Common applications include offline SMPS for home appliances and adapters.
- How does the auto-restart feature work in the FSL116HR?
The auto-restart feature alternately enables and disables the switching of the power SENSEFET until the fault condition is eliminated.
