OB2211 Overview
OB2211/OB2212 is an offline PWM Power switch for low power AC/DC charger and adaptor applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TL431 could be eliminated from design.
OB2211 Key Features
- Primary-side Sensing and Regulation With No TL431 and Opto-coupler
- Multi-mode Operation for High Efficiency
- Programmable CV and CC Regulation
- Adjustable Constant Current and Output Power setting
- Frequency Shuffling and Adjustable Gate Drive Greatly Improving EMI
- Power on Soft-start Time (4ms)
- Built-in Leading Edge Blanking (LEB)
- Cycle-by-Cycle Current Limiting
- VDD Under Voltage Lockout with Hysteresis (UVLO)
