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Comset Semiconductor - CONTROL CIRCUIT FOR SMPS

Numéro de référence TDA1060N
Description CONTROL CIRCUIT FOR SMPS
Fabricant Comset Semiconductor 
Logo Comset Semiconductor 





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TDA1060N fiche technique
TDA1060N
CONTROL CIRCUIT FOR SMPS
GENERAL DESCRIPTION
The TDA1060N is a bipolar integrated circuit intended for the control of a switched-mode
power supply.
QUICK REFERENCE DATA
Symbol
Ratings
VCC
ICC
-I14
I15
Tamb
Supply voltage (voltage source)
Supply current (current source)
Output current
Output current
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Operating ambiant temperature range
Value
< 18
<30
<40
<40
-25 to 85
Unit
V
mA
mA
mA
°C
FUNCTIONAL DESCRIPTION
The TDA1060N contains the control loop for a fixed-frequency pulse-duration regulated
SMPS. The device works as follows. The output voltage Vo of the SMPS is sensed via a
feedback network and compared with an internal reference voltage Vref. Any difference
between Vo and Vref is amplified and fed to a pulse-width modulator (PWM), where it is
compared with the instantaneous level of a ramp waveform (sawtooth) from an oscillator.
The output from the PWM is a rectangular waveform synchronized with the oscillator
waveform ; its duty factor depends on the difference between Vo and Vref. This signal drives
the base of the SMPS power switching transistor so that its conduction period and hence the
amount of energy transferred from the input to the output of the SMPS is controlled, resulting
in a constant output voltage.
29/10/2012
COMSET SEMICONDUCTORS
1|3
Datasheet pdf - http://www.DataSheet4U.co.kr/

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