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RS2112 - Primary-Side Regulation PWM Power Switch

Download the RS2112 datasheet PDF. This datasheet also covers the RS2111 variant, as both devices belong to the same primary-side regulation pwm power switch family and are provided as variant models within a single manufacturer datasheet.

General Description

RS2111/RS2112 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.

Key Features

  • including Cycle-by-Cycle current limiting, VDD over-voltage clamp and UVLO, fail-safe protection for open loop fault condition. Excellent EMI performance is achieved with Orister proprietary frequency Jiggling technique together with soft switching control at the totem pole gate drive output with No-Y Cap design. Features.
  • Primary-side Sensing and Regulation With No 431 and Opto-coupler.
  • Multi-mode operation for High Efficiency.
  • Programmable CV and CC Regulation.
  • Adjustable.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (RS2111-Orister.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number RS2112
Manufacturer Orister
File Size 286.93 KB
Description Primary-Side Regulation PWM Power Switch
Datasheet download datasheet RS2112 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
Page No. : 1/9 RS2111/RS2112 Primary-Side Regulation PWM Power Switch Description RS2111/RS2112 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. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the figure below. V0 8-Lead Plastic DIP-8 Package Code: P  8-Lead Plastic SOP-8 Package Code: S I0 Fig1. Typical CC/CV Curve In CC control, the current and output power setting can be adjusted externally by the sense resistor Rs at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency.