FLS6617 Series

Primary-Side-Regulation PWM with POWER MOSFET Integrated

Catalog

Primary-Side-Regulation PWM with POWER MOSFET Integrated

Part	Frequency - Switching	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Output Isolation	Voltage - Breakdown	Mounting Type	Duty Cycle	Supplier Device Package	Fault Protection	Topology	Operating Temperature [Min]	Operating Temperature [Max]	Internal Switch(s)	Package / Case [custom]	Package / Case	Package / Case [custom]	Package / Case	Voltage - Start Up
ON Semiconductor FLS6617MX	50 kHz	5 V	30 V	Isolated	900 V	Surface Mount	75 %	7-SOIC	Current Limiting Over Temperature Over Voltage	Flyback	-40 °C	125 °C		7	8-SOIC	3.9 mm	0.154 in	16 V

Catalog

Primary-Side-Regulation PWM with POWER MOSFET Integrated

Key Features

• Low Standby Power under 30 mW

• High-Voltage Startup

• Fewest External Component Counts

• Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry

• Green-Mode: Linearly Decreasing PWM Frequency with Cycle Skipping

• Fixed PWM Frequency at 50 kHz with Proprietary Frequency Hopping to Solve EMI Problem

• Peak-Current-Mode Control in CV Mode

• Cycle-by-Cycle Current Limiting

• VDDOver-Voltage Protection with Auto Restart

• VDDUnder-Voltage Lockout (UVLO)

• Gate Output Maximum Voltage Clamped at 15 V

• Fixed Over-Temperature Protection with Auto Restart

• Available in the 7-Lead SOP Package

Description

This third-generation Primary Side Regulation (PSR) and highly integrated PWM controller provides several features to enhance the performance of low-power flyback converters. The proprietary TRUECURRENT® technology of FLS6617 enables precise CC regulation and simplified circuit design for battery-charger applications leading to lower-cost, smaller, and lighter chargers, compared to a conventional design or a linear transformer.To minimize standby power consumption, the proprietary green mode provides off-time modulation to linearly decrease PWM frequency under light-load conditions. Green mode assists the power supply in meeting power conservation requirements.By using the FLS6617, a charger can be implemented with few external components and minimized cost.