Low voltage start-up flyback controller suitable for fixed frequency/CCM

Overview

The TEA1733/38 family of IC´s are low cost Switched Mode Power Supply (SMPS) controller IC intended for flyback topologies. They operate in fixed frequency mode. To reduce ElectroMagnetic Interference (EMI), frequency jitter has been implemented. Slope compensation is integrated for Continuous Conduction Mode (CCM) operation.

Features

SMPS controller IC enabling low-cost applications
Large input voltage range (12 V to 30 V)
Very low supply current during start-up and restart (typically 10 μA)
Low supply current during normal operation (typically 0.5 mA without load)
Overpower or high/low line compensation
Adjustable overpower time-out
Adjustable overpower restart timer
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current
Slope compensation for CCM operation
Low and adjustable OverCurrent Protection (OCP) trip level
Adjustable soft start operation
Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP)
IC overtemperature protection

Target Applications

All applications requiring efficient and cost-effective PSU solutions up to 75 W

Features

SMPS controller IC enabling low-cost applications
Large input voltage range (12 V to 30 V)
Very low supply current during start-up and restart (typically 10 μA)
Low supply current during normal operation (typically 0.5 mA without load)
Overpower or high/low line compensation
Adjustable overpower time-out
Adjustable overpower restart timer
Fixed switching frequency with frequency jitter to reduce EMI
Frequency reduction with fixed minimum peak current
Slope compensation for CCM operation
Low and adjustable OverCurrent Protection (OCP) trip level
Adjustable soft start operation
Two protection inputs (e.g. for input UVP and OVP, OTP and output OVP)
IC overtemperature protection

Target Applications

All applications requiring efficient and cost-effective PSU solutions up to 75 W

TEA1733DB:TEA1733T 65W 19.5V Notebook adapter

Evaluation and Development Boards

TEA1733AT: Low voltage start-up flyback controller suitable for fixed frequency/CCM ARCHIVED

Overview

Features

Target Applications

Features

Target Applications

S08 Package

S08 Package

Development Boards and Designs

Development Boards and Designs