Overview
The FSL136MR, produced by onsemi, is an integrated Pulse Width Modulator (PWM) and SENSEFET® designed for high-performance offline Switch-Mode Power Supplies (SMPS). This device combines an avalanche-rugged SENSEFET with a current-mode PWM control block, making it ideal for applications requiring minimal external components. The FSL136MR enhances efficiency, productivity, and system reliability while reducing the total component count, design size, and weight compared to discrete MOSFET and controller solutions or RCC switching converters.
Key Specifications
| Parameter | Unit | Min | Typ | Max |
|---|---|---|---|---|
| Operating Temperature Range | °C | -40 | 105 | |
| Switching Frequency | kHz | 61 | 67 | 73 |
| Maximum Duty Cycle | % | 71 | 77 | 83 |
| UVLO Threshold Voltage | V | 11 | 12 | 13 |
| Peak Current Limit | A | 1.89 | 2.15 | 2.41 |
| Standby Power Consumption | mW | < 50 | ||
| Internal Soft-Start Time | ms | 10 | 15 | 20 |
| Junction-to-Ambient Thermal Resistance | °C/W | 80 |
Key Features
- Internal Avalanche-Rugged SENSEFET (650 V)
- Under 50 mW Standby Power Consumption at 265 Vac, No-load Condition with Burst Mode
- Precision Fixed Operating Frequency with Frequency Modulation for Attenuating EMI
- Internal Startup Circuit
- Built-in Soft-Start: 15 ms
- Pulse-by-Pulse Current Limit
- Various Protection: Over Voltage Protection (OVP), Overload Protection (OLP), Output-Short Protection (OSP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown Function with Hysteresis (TSD)
- Auto-Restart Mode
- Under-Voltage Lockout (UVLO)
- Low Operating Current: 1.8 mA
- Adjustable Peak Current Limit
Applications
- SMPS for VCR, STB, DVD & DVCD Players
- SMPS for Home Appliances
- Adapter Applications
Q & A
- What is the FSL136MR used for?
The FSL136MR is used for high-performance offline Switch-Mode Power Supplies (SMPS) with minimal external components.
- What are the key components integrated into the FSL136MR?
The FSL136MR integrates an avalanche-rugged SENSEFET with a current-mode PWM control block.
- What are the benefits of using the FSL136MR compared to discrete solutions?
The FSL136MR reduces total component count, design size, and weight while increasing efficiency, productivity, and system reliability.
- What is the operating temperature range of the FSL136MR?
The operating temperature range is -40°C to 105°C.
- What is the typical switching frequency of the FSL136MR?
The typical switching frequency is 67 kHz.
- Does the FSL136MR have built-in protection features?
- How does the FSL136MR manage standby power consumption?
The FSL136MR has a standby power consumption of under 50 mW at 265 Vac, no-load condition with burst mode.
- Can the peak current limit of the FSL136MR be adjusted?
- What is the purpose of the soft-start feature in the FSL136MR?
The soft-start feature helps in reducing the inrush current during startup, typically set to 15 ms.
- What are some common applications of the FSL136MR?
