|
|
PDF SG6105 Data sheet ( Hoja de datos )
| Número de pieza | SG6105 | |
| Descripción | Power Supply Supervisor + Regulator + PWM | |
| Fabricantes | ETC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de SG6105 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
|
No Preview Available !
Power Supply Supervisor + Regulator + PWM
Product Specification
SG6105
FEATURES
PC half-bridge (or 494) power supply supervisor +
two 431 + PWM
High integration & few external components
Over-voltage protection for 3.3V, 5V and 12V
Under-voltage protection for 3.3V, 5V and 12V
Under-voltage protection for –12V and/or –5V
Over-power and short-circuit protection
Power-down warning circuitry
Power good circuitry
Delay time for PSON and PG signal
Remote ON/OFF function
On-chip oscillator and error amplifier
Two shunt regulator for 3.3V and 5V-Standby
Latching PWM for cycle-by-cycle switching
Push-pull PWM operation and totem pole outputs
Soft-start and maximum 93% duty cycle
APPLICATIONS
Switching mode power supply for Computers, such
as:
ATX
NLX
SFX (micro-ATX)
DESCRIPTION
SG6105 controller is designed for switching mode
power supply for desktop PCs. It provides all the
functions necessary to monitor and control the output of
the power supply. Remote ON/OFF control, power good
circuitry, some protection features against over-voltage
and over-power are implemented. It directly senses all the
output rails for OVP without the need of external dividers.
An innovated AC-signal sampling circuitry provides a
sufficient power-down warning signal for PG. A built-in
timer generates accuracy timing for control circuit
including the PS-off delay. The cycle-by-cycle PWM
switching prevents the power transformer from the
saturation and ensures the fastest response for the
short-circuit protection which greatly reduce the stress for
power transistors. Two internal precision TL431 shunt
regulators provide stable reference voltage and driver for
3.3V and 5V-standby regulation. Utilizing minimum
number of external components, the SG6105 includes all
of the functions for push-pull and/or half-bridge topology,
decreasing the production cost and PCB space, and
increasing the MTBF for power supply.
MARKING DIAGRAMS
PIN CONFIGURATION
20
SG6105T
XXXXXXXYYWWV
1
T: D = DIP
XXXXXXX: Wafer Lot
YY: Year; WW: Week
V: Assembly Location
PSON 1
20 VCC
V33 2
19 RI
V5 3 18 SS
OPP
4
17 IN
UVAC 5
16 COMP
NVP
6
15 GND
V12 7
14 FB1
OP2
8
13 VREF1
OP1
9
12 VREF2
PG 10 11 FB2
©System General Corp.
Version 2.3(IRO33.0011.B0)
-1-
www.sg.com.tw
June 19, 2003
1 page  
Power Supply Supervisor + Regulator + PWM
Product Specification
SG6105
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
VFB
IOUT
PD,25к
PD,90к
TSTG
RθJA
TJ,MAX
TA,MAX
TL
Parameter
DC Supply Voltage at Pin 20
Shunt Regulator Output at Fb1, Fb2 Pins
Output Current at PG, Fb1, Fb2 Pins
кPower Dissipation (TA=25 )
кPower Dissipation (TA=90 )
Storage Temperature Range
Thermal Resistance, Junction-To-Air
Operating Junction Temperature
Operating Ambient Temperature
Lead Temperature (Soldering, 10sec)
ESD Capability, HBM model
Value
16
16
30
1.5
0.5
-55 to +150
82.5
150
-30 to +125
260
3.0
Note: All voltage values, except differential voltage, are with respect to network ground terminal.
Unit
V
V
mA
W
W
к
к/W
к
к
к
kV
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter
VCC
VFB
TOPER
DC Supply Voltage at Pin 20
Shunt Regulator Output at Fb1, Fb2 Pins
Operating Ambient Temperature Range
Value
4.5 to 5.5
4 to 16
-25 to +85
Unit
V
V
к
ELECTRICAL CHARACTERISTICS (VCC = 5V, TA = 25°C)
Symbol Parameter
Test Condition
ICC Total Supply Current
PG High
VOVP1
Over-Voltage Protection 3.3V
-
VOVP2
Over-Voltage Protection 5V
-
VOVP3
Over-Voltage Protection 12V
-
VUVP1
Under-Voltage Protection 3.3V
-
VUVP2
Under-Voltage Protection 5V
-
VUVP3
Under-Voltage Protection 12V
-
VUVS1
Under-Voltage Sense 3.3V for PG Low
-
VUVS2
Under-Voltage Sense 5V for PG Low
-
VUVS3
VOPPS* 1
Under-Voltage Sense 12V for PG Low
Over-Power Protection.
-
VUVAC = 1.5V
VNVP
Negative Voltage Protection: Voltage Level
-
INVP
Negative Voltage Protection: Source Current
RI = 75kΩ
tOVP Timing for Over-Voltage Protection
RI = 75kΩ
tUVP Timing for Under-Voltage Protection
RI = 75kΩ
tUVS
Timing for Under-Voltage Sense for PG Low
RI = 75kΩ
tOPP Timing for Over-Power-Protection
RI = 75kΩ
tNVP Timing for Negative Voltage Protection
RI = 75kΩ
Note *1: VOPPS = (2/3) x VOPP + (1/3) x VUVAC ;
Min.
-
3.9
5.8
13.9
2.0
3.0
6.0
2.5
4.0
9.4
2.02
2.0
57
0.37
0.8
0.37
3.3
3.3
Typ.
5
4.1
6.1
14.5
2.6
3.6
7.2
2.8
4.3
10.1
2.4
2.1
64
0.7
2.4
1.2
7
7
Max.
10
4.3
6.5
14.9
2.8
3.9
8.0
3.0
4.5
10.4
2.66
2.2
72
1.35
3.75
1.88
11.3
10.2
Unit
mA
V
V
V
V
V
V
V
V
V
V
V
uA
ms
ms
ms
ms
ms
©System General Corp.
Version 2.3(IRO33.0011.B0)
-5-
www.sg.com.tw
June 19, 2003
5 Page 
Power Supply Supervisor + Regulator + PWM
Product Specification
SG6105
PWM switching signal in the secondary power
transformer is proportional to the AC line voltage. Adjust
the ratio of resistor divider to decide the threshold of
power-down warning. A small capacitor is connected
from UVAC to ground for filtering the switching noise.
VS
Vo
Vin
R1
R2 C1
+
0.7V
UVAC
Over Power Protection (OPP)
The OPP (over power protection) is used for
detecting over power and/or short-circuit conditions.
When OPPS voltage (p.4, Note-1) is higher than 2.1V and
this situation existed for longer than 7 msec, 6105 will
pull the PG low and lock off the power outputs.
OP1
Vdd
Negative Voltage Protection
The NVP provides an UVP (under voltage protection)
for negative voltage outputs. An under-voltage represents
the phenomenal of the overload condition in negative
voltage output. For example, the –12V output may drop
to –10V during the overload situation. A resistor
determining the threshold of the protection is connected
from pin NVP to the negative voltage output. Via this
resistor, NVP outputs a 64uA constant current to the
negative voltage output. When the NVP voltage is over
2.1V and the situation kept for longer than 7 msec, 6105
will lock the power outputs off.
VNVP = 64 uA × (R1 + R2) – V-12V
The power outputs will be locked off when VNVP ≥
2.1V.
64uA
R1
2.1V
R2
-12V
-5V
R1 R2
OP2
OPP
C1 R3
©System General Corp.
Version 2.3(IRO33.0011.B0)
- 11 -
www.sg.com.tw
June 19, 2003
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet SG6105.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SG6100 | DIODE ARRAY CIRCUITS |  LINFINITY |
| SG6100F | Diode ( Rectifier ) |  American Microsemiconductor |
| SG6100J | Diode ( Rectifier ) | American Microsemiconductor |
| SG6101 | DIODE ARRAY CIRCUITS | LINFINITY |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |