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PDF L6590 Data sheet ( Hoja de datos )

Número de pieza L6590
Descripción FULLY INTEGRATED POWER SUPPLY FIPS
Fabricantes STMicroelectronics 
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No Preview Available ! L6590 Hoja de datos, Descripción, Manual

® L6590
FULLY INTEGRATED POWER SUPPLY FIPS
PRODUCT PREVIEW
Features
WIDE-RANGE MAINS OPERATION
”ON-CHIP” 700V BVDSS POWER MOS
65kHz INTERNAL OSCILLATOR
2.5V ±2% INTERNAL REFERENCE
STANDBY MODE FOR HIGH EFFICIENCY
AT LIGHT LOAD
OVERCURRENT AND LATCHED OVERVOL-
TAGE PROTECTION
NON DISSIPATIVE BUILT-IN START-UP CIR-
CUIT
ON-CHIP SOFT START AND THERMAL
SHUTDOWN
Main Applications
WALL PLUG POWER SUPPLY UP TO 15W
AC-DC ADAPTORS
AUXILIARY POWER SUPPLY:
- MONITORS (BLUE ANGEL)
- DESKTOPS/SERVERS
- FAX, TV, LASER PRINTERS
- HOME APPLIANCES/LIGHTING
LINE CARD, DC-DC CONVERTERS
TYPICAL APPLICATION CIRCUIT
Minidip
SO16W
DESCRIPTION
The L6590 is a monolithic switching regulator de-
signed in BCD OFF-LINE technology, able to op-
erate with wide range input voltage and delivering
an output power up to 13W. The internal switch.
is implemented by a lateral high voltage power
Mosfet with an Rdson of 13and a BVDss of
700V. The internal fixed oscillator frequency, non
dissipative start up and the internal soft start sys-
tem allow to minimize the components count. A
2.5V+/-2% internal reference in addition to a high
gain error amplifier make the device suitable for
low cost applications with primary control.
Internal protections like cycle by cycle current lim-
iting, output overvoltage protection and thermal
shutdown generate a ’robust’ design solution.
The device automatically reduces the frequency
from 65KHz to 22KHz under light load conditions
improving the efficiency.
AC LINE
85VAC to 265VAC
PO=15W
DRAIN
SUPPLY
& UVLO
VREF
OVER
VOLTAGE
+
-
VREF
+
-
OVER
CURRENT
L6590
OSC
100KHz
PWM
+
-
2.5V
GND
VCOMP
VCC
VFB
D98IN857
May 1999
This is preliminary information on a new product now in development. Details are subject to change without notice.
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L6590 pdf
APPLICATION EXAMPLE (continued)
Figure 4. Line Card Application. (Isolated bias winding feedback)
0
MINIMUM COMPONENTS COUNT
FULLY ISOLATED SOLUTION
L6590
-48V
GND
COMP
DRAIN
VCC
VFB
L6590
+5V
-5V
D98IN853
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