TEA1501 Philips Semiconductors, TEA1501 Datasheet - Page 2

• Manufacturer Part Number: TEA1501
• Description: Greeny; GreenChip
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
Green features
Protection features
BASIC FLYBACK CONFIGURATION
1998 Aug 19
handbook, full pagewidth
Direct off-line operation (90 to 276 V AC)
Low external component count
Integrated high voltage startup current source for a fast
startup within 0.25 s
Integrated power switch: 650 V, 40 , 0.25 A
Programmable primary peak current
Data transfer from isolated secondary side to
non-isolated primary side via the transformer
On/Off function replaces expensive mains switch by a
functional switch.
Low current consumption in Off mode, typical 40 A
Efficient burst mode operation, for 0.1 to 3 W output
power.
Cycle-by-cycle current control with programmable
primary peak current
Over-voltage protection
Greeny; GreenChip
(1) The secondary earthing point is isolated from the primary earthing points.
R Src
C Bt
OOD
Ref
Src
Bt
R Ref
Fig.1 Basic flyback configuration.
TEA1501
on/off
Drn
n.c.
Gnd
Vaux
2
V in
GENERAL DESCRIPTION
The TEA1501 (Greeny) is the low power member of the
GreenChip family and is especially designed for standby
switched mode power supply applications. Greeny
incorporates all the necessary functions for an efficient
and low cost power supply for 90 to 276 V AC universal
input. Greeny is a monolithic integrated circuit and is
available in a DIP8 package. The design is made in the
BCD_PowerLogic750 process and includes the high
voltage switching device. Using only 7 functional pins,
Greeny contains extensive control functions to form a
flexible and a reliable power supply with a minimum of
external components. Greeny operates in a flyback
topology (see Fig.1) with a fixed switching frequency,
constant primary peak current control and regulates the
output voltage in burst mode.
Applications include low power supplies and standby
power supplies as used in television, monitor, lighting
electronics and domestic appliances with an output power
from 0.1 to 3 W.
Under-voltage lockout
Over-temperature protection.
V zener
n p
n a
MGM823
n s
(1)
V out
load
Preliminary specification
TEA1501