FAIRCHILD SG6516SZ

SG6516
PC Power Supply Supervisors
Features
Description
ƒ
ƒ
Two 12V Sense Input Pins: VS12 and VS12B
The SG6516 is designed to provide the supply voltage,
current supervisor, remote on/off (PSON), power good
(PGO) indicator, and fault protection (FPO) functions for
switching power systems.
ƒ
Over-Current Protection (OCP) for 3.3V, 5V,
and two 12V
ƒ
Under-Voltage Protection (UVP) for 3.3V, 5V,
and two 12V
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
Open-Drain Output for PGO and FPO Pins
Over-Voltage Protection (OVP) for 3.3V, 5V,
and two 12V
For supervisory functions, it provides the over-voltage
protection (OVP) for 3.3V, 5V, and two 12V; overcurrent protection (OCP) for 3.3V, 5V, and two 12V;
under-voltage protection (UVP) for 3.3V, 5V, and two
12V. When 3.3V, 5V, or 12V voltage decreases to 2.3V,
3.5V, and 9V, respectively, the under-voltage protection
function is enabled. FPO is set HIGH to turn off the
PWM controller IC. The voltage difference across
external current shunt is used for OCP functions. An
external resistor can be used to adjust the protection
threshold. An additional protection input pin provides
the flexibility for designing protection circuits.
300ms Power-Good Delay
2.8ms PSON Control to FPO Turn-off Delay
48ms PSON Control Delay
No Lock-up During the Fast AC Power On/Off
Wide Supply Voltage Range: 4V to 15V
The power supply is turned on after a 48ms delay when
PSON signal is set from HIGH to LOW. To turn off the
power supply, the PSON signal is set from LOW to
HIGH with a delay of 48ms. The PGI circuitry provides a
power-down warning signal for PGO. When PGI input is
lower than the internal 1.25V reference voltage, the
PGO signal is pulled LOW.
Applications
ƒ
ƒ
ƒ
Switch-Mode Power Supplies with Active PFC
Servo System Power Supplies
PC-ATX Power Supplies
Ordering Information
Part Number
Operating Temperature Range
Package
SG6516DZ
-40°C to +85°C
16-pin Dual In-Line Package (DIP)
SG6516SZ
-40°C to +85°C
16-pin Small Outline Package (SOP)
Packing
Method
Rail
Tape & Reel
All packages are lead free per JEDEC: J-STD-020B standard.
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
SG6516 — PC Power Supply Supervisors
April 2008
SG6516 — PC Power Supply Supervisors
Application Diagram
Figure 1.
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
Typical Application
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2
SG6516 — PC Power Supply Supervisors
Block Diagram
Figure 2. Function Block Diagram
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
3
SG6516 — PC Power Supply Supervisors
Pin Configuration
Figure 3. Pin Configuration(Top View)
Pin Definitions
Pin #
Name
Description
1
PGI
Power Good Input. For ATX SMPS, it detects AC line voltage through the main transformer.
2
GND
Ground.
3
FPO
Fault Protection Output. Output signal to control the primary PWM IC through an optocoupler. When FPO is low, the PWM IC is enabled.
4
PSON
5
IS12
6
RI
7
VS12B
8
IS5
5V over-current protection sense input.
9
IS33
3.3V over-current protection sense input.
10
VS12
12V over/under-voltage control sense input.
11
VS33
3.3V over/under-voltage control sense input.
12
VS5
5V over/under-voltage control sense input.
13
VDD
Supply voltage: 4.2V ~ 15V. For ATX SMPS, it is connected to 5V-standby and 12V through
diodes, respectively.
14
PGO
Power-Good logic Output, 0 or 1 (open-drain). Power good=1 means that the power supply is
good for operation. The power-good delay is 300ms.
Remote on/off logic input from CPU or main board. The power supply is turned on/off after
a 48ms delay.
12V over-current protection sense input. For typical applications, this pin is connected to the
positive end of a current shunt through one resistor. When the voltage on IS12 is higher than
that of VS12 by 5mV, OCP is enabled.
Reference setting. One external resistor, RI, connected between the RI and GND pins,
determines a reference current, IREF=1.25/RI, for OCP programming.
Second 12V over/under-voltage control sense input.
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
4
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only. All voltage values, except differential voltage, are
given with respect to GND pin.
Symbol
VDD
VIN
VOUT
TJ
TSTG
TL
ESD
Parameter
Min.
Max.
Unit
16
V
PSON, PGI, VS5, IS5, VS33, IS33
-0.3
7.0
V
VS12, VS12B, IS12
-0.3
15.0
V
FPO, PGO
DC Supply Voltage
Input Voltage
-0.3
8.0
V
Operating Junction Temperature
Output Voltage
-40
+125
°C
Storage Temperature Range
-55
+150
°C
+260
°C
Electrostatic Discharge Capability, Human Body Model
Lead Temperature (Soldering)
3.0
KV
Electrostatic Discharge Capability, Machine Model
200
V
SG6516 — PC Power Supply Supervisors
Absolute Maximum Ratings
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
TA
Parameter
Min.
Operating Ambient Temperature
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
-40
Typ.
Max.
Unit
+85
°C
www.fairchildsemi.com
5
VDD=5V, TA=25°C, unless otherwise noted.
Symbol
Parameter
Conditions
VDD Section
VDD
DC Supply Voltage
IDD1
Supply Current 1
PSON=LOW
IDD2
Supply Current 2
PSON=HIGH
tR
Supply Voltage Rising Time
VST
VDD Start Threshold Voltage
Over-Voltage (OVP) and Over-Current (OCP) Protections
VS33
VOVP
Over-Voltage Protection
VS5
VS12, VS12B
Ratio of Current-Sense Sink Current
RI=18.5kΩ ~ 75kΩ
IREF
to Current-Sense Setting Pin (RI)
Source Current
VOFFSET OCP Comparator Input Offset Voltage
ILKG-FPO Leakage Current (FPO)
FPO=5V
VOL-FPO Low Level Output Voltage (FPO)
ISINK 20mA
tOVP
OVP Delay Time
tOCP
OCP Delay Time
VRI
RI Pin Voltage
IRI
Output Current RI
0.6V < PGI < 1.25V;
tST-OCP
Start-up OCP / UVP Protection Time
FPO=Low
Under-Voltage Protection and PGI, PGO
VPGI_1
Input Threshold Voltage
PGI 1
VPGI_2
Input Threshold Voltage
PGI 2
VS33
VUVP
Under-Voltage Protection
VS5
VS12, VS12B
tOND
Under Voltage Turn-on Delay
PGI>0.6V
tUVP
UVP Delay
PGI>1.25V
ILKG-PGO Leakage Current (PGO)
PGO=5V
VOL-PGO Low Level Output Voltage (PGO)
VDD=12V; ISINK 10mA
tPG
Timing PG Delay
tND1
Noise Deglitch Time
PSON Control
IPSON
Input Pull-up Current
VIH
High-level Input Voltage
VIL
Low-level Input Voltage
tPSON
tPSOFF
Timing PSON to On/Off
Typ.
Max.
Units
1.7
1.0
15.0
2.6
1.5
V
mA
mA
ms
V
4.2
1
4.2
3.7
5.7
13.2
3.9
6.1
13.8
4.1
6.5
14.4
7.6
8.0
8.4
-3
3
5
0.4
110
27.5
1.01•Typ.
62.5
mV
µA
V
µs
ms
V
µA
75
20.0
1.25
49
75
114
ms
0.98•Typ.
0.96•Typ.
2.1
3.3
8.5
49
2.4
1.25
0.60
2.3
3.5
9.0
75
3.2
V
V
200
300
1.02•Typ.
1.03•Typ.
2.5
3.7
9.5
114
4.0
5
0.4
450
ms
ms
µA
V
ms
90
150
210
µs
0.8
µA
V
V
120
2
PSON LOW to FPO
LOW
PSON HIGH to PGO
LOW
V
33
12.5
0.98•Typ.
12.5
PSON=0V
Timing PGO LOW to FPO HIGH
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
Min.
34
48
67
34
48
67
1.6
2.8
4.5
SG6516 — PC Power Supply Supervisors
Electrical Characteristics
V
ms
ms
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6
The SG6516 provides over-current protection for the
3.3V, 5V, and two 12V rails. Whenever an OCP
condition occurs at any of the voltage rails, PGO is
LOW and FPO is open. The internal OCP comparators
have a very small offset voltage ( ± 3mV). The sink
currents of IS33, IS5, and IS12 are eight times the
current at the RI pin. The current at the RI pin is VRI/RI.
The following example demonstrates how to set the
over-current protection. If I1×R1 > IRI × R2, OCP is active.
If R1=5mΩ, RI=30KΩ, and the OCP active level is 35A;
the R2 resistor is:
R2 =
I1 × R 1
= 525Ω
IRI × 8
(1)
Figure 4. OCP Set-up
where C is bypass noise, with a suggested value
between 1µF ~ 2.2µF
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
SG6516 — PC Power Supply Supervisors
Functional Description
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7
SG6516 — PC Power Supply Supervisors
Timing Chart
Figure 5. Timing Diagram
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
8
1.900
8.300
1.800
8.100
1.700
IREF
IDD1 (mA)
8.500
7.900
1.600
1.500
7.700
7.500
-40℃ -25℃ -10℃
5℃
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
1.400
-40℃ -25℃ -10℃
95℃ 110℃ 125℃
Figure 6. IREF vs. TA
5℃
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
95℃ 110℃ 125℃
Figure 7. IDD1 vs. TA
SG6516 — PC Power Supply Supervisors
Typical Performance Characteristics
28.000
2.000
26.000
1.200
TOCP (ms)
VOFFSET (mV)
24.000
0.400
-0.400
22.000
20.000
-1.200
18.000
-2.000
-40℃ -25℃ -10℃
5℃
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
16.000
-40℃ -25℃ -10℃
95℃ 110℃ 125℃
Figure 8. VOFFSET vs. TA
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
95℃ 110℃ 125℃
Figure 9. tOCP vs. TA
1.300
1.280
1.280
1.260
1.260
VRI (V)
VPGI (V)
1.300
1.240
1.220
1.200
-40℃
5℃
1.240
1.220
1.200
-25℃ -10℃
5℃
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
95℃
110℃ 125℃
-40℃
Figure 10. VRI vs. TA
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
-25℃ -10℃
5℃
20℃ 35℃ 50℃
Temperature (℃)
65℃
80℃
95℃
110℃ 125℃
Figure 11. VPGI vs. TA
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SG6516 — PC Power Supply Supervisors
Physical Dimensions
Figure 12. 14-PDIP
Symbol
Millimeter
Min.
Inch
Typ.
A
Max.
Min.
Typ.
5.334
A1
0.381
A2
3.175
0.210
0.015
3.302
3.429
0.125
0.130
b
1.524
0.060
b1
0.457
0.018
D
18.669
19.177
6.121
6.299
E
E1
L
19.685
0.735
0.755
6.477
0.241
0.248
7.620
e
Max.
0.135
0.775
0.300
2.540
0.255
0.100
2.921
3.302
3.810
0.115
0.130
0.150
eB
8.509
9.017
9.525
0.335
0.355
0.375
θ˚
0˚
7˚
15˚
0˚
7˚
15˚
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
10
SG6516 — PC Power Supply Supervisors
Physical Dimensions (Continued)
Figure 13. 14-SOIC
Symbol
Millimeter
Min.
Inch
Typ.
Max.
Min.
Typ.
Max.
A
1.346
1.753
0.053
0.069
A1
0.101
0.254
0.004
0.010
A2
1.244
1.499
0.049
0.059
b
0.406
0.016
c
0.203
0.008
D
9.804
10.008
0.386
0.394
E
3.810
3.988
0.150
0.157
e
1.270
0.050
H
5.791
6.198
0.228
0.244
L
0.406
1.270
0.016
0.050
F
0.381X45˚
y
θ˚
0.015X45˚
0.101
0˚
0.004
8˚
0˚
8˚
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify
or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions,
specifically the warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
11
SG6516 — PC Power Supply Supervisors
© 2007 Fairchild Semiconductor Corporation
SG6516 • Rev. 1.0.2
www.fairchildsemi.com
12