TEA1566

Features:

Distinctive features
• High level of integration in 20 to 50 fewer components compared to a power supply with discrete components
• On-chip 600 V MOSFET
• On/off function replaces expensive mains switch with functional switch
• Direct off-line operation (90 to 276 VAC)
• On-chip 5% accurate oscillator.
Green features
• Low power consumption in off-mode (<100 mW)
• On-chip efficient start-up current source giving fast start-up
• Burst mode stand-by (<2 W) for overall improved system efficiency
• Low power operation mode with lower frequency to reduce switching losses.
Protection features
• Demagnetization protection
• Cycle by cycle current limitation with programmable current trip level
• Over voltage protection
• Over temperature protection
• Safe-restart mode with reduced power for system faultconditions.
Highly versatile
• Usable in Buck and flyback topology
• Interfaces both primary and secondary side feedback.



Pinout




Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
VI(max)	maximum DC input voltage		−	600	V
		during inductive turn-off; note 1	−	720	V
ID	supply current		−	7	A
VOOB	mode detect input voltage			+14	V
IOOB	mode detect input current			+2	mA
Idemag	demagnetization input current			±1	mA
Vctrl	feedback input voltage			+5	V
Vlsense	current sense input voltage			+5	V
Iref	reference input current			−1	mA
Vaux	auxiliary supply voltage			+18	V
Tj	operating junction temperature			+140	°C
Tstg	storage temperature			+150	°C
Ves	electrostatic handling voltage	class 2 human body model; note 3 machine model; note 4	− −	2500 250	V V

Description

The GreenChip, intended for off-line 90 to 276 VAC power supply applications, is a monolithic high voltage family of ICs that combines analog and digital circuits to implement all necessary control functions for a switched mode power supply. The functions include integrated high voltage start-up current source, voltage mode PWM control, 5% accurate trimmed oscillator, band gap derived reference voltages, comprehensive fault protection, and leading edge blanking. High level of integration leads to cost effective power supplies that are compact, weigh less,
and at the same time give higher efficiency, are more reliable and simple to design. Efficient green features lead to very low power operation modes and a novel on/off function helps replace the expensive mains switch with a low cost functional switch.