TEA1654T NXP Semiconductors, TEA1654T Datasheet - Page 15

• Manufacturer Part Number: TEA1654T
• Manufacturer: NXP Semiconductors

Specifications of TEA1654T

• Operating Temperature (max): 145C
• Operating Temperature (min): -20C
• Pin Count: 14
• Mounting: Surface Mount
• Package Type: SO
• Screening Level: Commercial
• Lead Free Status / Rohs Status: Compliant

Philips Semiconductors
APPLICATION INFORMATION
A converter with the TEA1654 consists of an input filter, a transformer with a third winding (auxiliary), and an output stage
with a feedback circuit.
Capacitor C
during start-up and via the auxiliary winding during operation.
A sense resistor converts the primary current into a voltage at pin I
maximum primary peak current.
2003 May 12
handbook, full pagewidth
GreenChip II SMPS control IC
The LOCK pin is used in this example for an additional external overtemperature protection.
If this pin is not used, it must be tied to ground.
VCC
(at pin V
C CTRL
R CTRL
C VCC
t
CC
) buffers the supply voltage of the IC, which is powered via the high voltage rectified mains
V CC(5V)
LOCK
CTRL
GND
DEM
V CC
n.c.
V mains
8
9
10
11
12
13
14
TEA1654T
Fig.11 Configuration with controlled PFC.
R DEM
7
6
5
4
3
2
1
DRAIN
HVS
HVS
DRIVER
STDBY
I sense
VCOadj
15
R s2
PFC
C SS
R SS
sense
. The value of this sense resistor defines the
R sense
MOSFET
power
N aux
N p
V i
MDB214
N s
D o
C o
R reg1
R reg2
V o
Product specification
TEA1654