FSL126MR Green-Mode Power Switch Description The FSL126MR integrated Pulse Width Modulator (PWM) and SENSEFET is specifically designed for highperformance offline Switch Mode Power Supplies (SMPS) with minimal external www.onsemi.com components. FSL126MR includes integrated highvoltage power switching regulators that combine an avalancherugged SENSEFET with a currentmode PWM control block. The integrated PWM controller includes: UnderVoltage Lockout (UVLO) protection, LeadingEdge Blanking (LEB), a frequency generator for EMI attenuation, an optimized gate turnon / turnoff driver, Thermal Shutdown (TSD) protection, and temperature compensated precision current sources for loop compensation and PDIP8 9.42x6.38, 2.54P CASE 646CM fault protection circuitry. The FSL126MR offers good softstart performance. When compared to a discrete MOSFET and controller or RCC switching converter solution, the FSL126MR reduces total MARKING DIAGRAM component count, design size, and weight while increasing efficiency, Y&E&Z&2&K productivity, and system reliability. This device provides a basic FSL126MR platform that is well suited for the design of costeffective flyback converters. Features Y = ON Semiconductor Logo &E = Designates Space Internal AvalancheRugged SENSEFET (650 V) &Z = Assembly Plant Code Under 50 mW Standby Power Consumption at 265 V , Noload AC &2 = 2Digit Date Code Format Condition with Burst Mode &K = 2Digit Lot Run Tracebility Code FSL126MR = Specific Device Code Data Precision Fixed Operating Frequency with Frequency Modulation for Attenuating EMI ORDERING INFORMATION Internal Startup Circuit See detailed ordering and shipping information on page 2 of Builtin SoftStart: 15 ms this data sheet. PulsebyPulse Current Limiting Various Protections: OverVoltage Protection (OVP), Overload Protection (OLP), OutputShort Protection (OSP), Abnormal OverCurrent Protection (AOCP), Internal Thermal Shutdown Function with Hysteresis (TSD) AutoRestart Mode UnderVoltage Lockout (UVLO) Low Operating Current: 1.8 mA Adjustable Peak Current Limit This is a PbFree Device Applications SMPS for VCR, STB, DVD, & DVCD Players SMPS for Home Appliance Adapter Semiconductor Components Industries, LLC, 2019 1 Publication Order Number: July, 2019 Rev. 2 FSL126MR/DFSL126MR Related Resources Table 1. MAXIMUM OUTPUT POWER AN4137 Design Guidelines for Offline Flyback Maximum Output Power (Note 1) Converters Using Power Switch 230V 15% (Note 2) 85 265 V AC AC AN4141 Troubleshooting and Design Tips for Power Adapter Adapter Switch Flyback Applications (Note 3) (Note 3) Open Frame Open Frame AN4147 Design Guidelines for RCD Snubber of 15 W 21 W 12 W 17 W Flyback 1. The junction temperature can limit the maximum output power. Evaluation Board: FEBFSL126MR H432v1 2. 230 V or 100 / 115 V with doubler. AC AC Power Supply WebDesigner Flyback Design & 3. Typical continuous power in a nonventilated enclosed adapter measured at 50C ambient. Simulation In Minutes at No Expense ORDERING INFORMATION Part Number Operating Temperature Range Top Mark Package Shipping FSL126MR 40 to 105C FSL126MR 8Lead, Dual Inline Package (DIP) 3000 Units / Tube (PbFree) Application Diagram AC IN DC OUT V STR Drain I PK PWM V V FB CC Source Figure 1. Typical Application www.onsemi.com 2