sd6109
TRANSCRIPT
SD6109
VOLTAGE MODE PWM POWER SUPPLY WITH BUILT-IN SUPERVISOR, PROTECTION AND REGULATION FOR PCs
DESCRIPTION
The SD6109 is a power management IC for computers.
It integrates various monitoring functions and protections, such as
AC fail detection, over power protection, negative voltage protection,
over/under voltage protection and provides power down signal for
PG.
Built-in high precision oscillator provides accurate protection and
delay time for monitoring. And internal regulators TL431 are used for
stable output 3.3V and 5V, with few peripheral components.
Built-in soft-start decreases stress of transformer against saturation.
SD6109 used for pull-push or half-bridge power system with high
efficiency and stability.
FEATURES
* Advanced Bi-CMOS process.
*4KV HBM ESD protection
* Bipolar structure adopted in Shunt regulators TL431, with high
reliability
* Over voltage protection for 3.3V/5V/12V
* Under voltage protection for 3.3V/±5V/±12V
* Over power protection
* Short circuit protection
* AC-input under voltage protection
* PG Circuit
* PSON for remote control
* Delay time for PSON or PG signals
* Two bypass regulators for 3.3V and 5V- voltage stability
* Soft start and maximum 93% duty cycle
DIP-20-300-2.54
APPLICATIONS
* Switching mode power supply for
computers.
ORDERING INFORMATION
Part No. Package Marking
SD6109 DIP-20-300-2.54 SD6109
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SD6109
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATING
Characteristics Symbol Rating Unit
Supply Voltage(pin 20) VCC 12 V
Regulator Output At Pins FB1, FB2 Pins VFB 16 V
Output Current At Pins PG, FB1, FB2 Pins IOUT 30 mA
Power Dissipation(Tamb=25°C) PD 1.5 W
Power Dissipation(Tamb=90°C) PD 0.5 W
Thermal Resistance, Junction-To-Air RθJA 82.5 °C/W
Operating Temperature Range Tamb -30 ~ +125 °C
Storage Temperature Range Tstg -55~+155 °C
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SD6109
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ELECTRICAL CHARACTERISTICS (Unless otherwise stated, VCC=5V, Tamb=25°C)
Characteristics Symbol Test condition Min. Typ. Max. Unit
Supply Voltage VCC All functions are normal. 4.5 5.0 7.0 V
Supply Current ICC PG High -- 5 10 mA
Over-Voltage Protection 3.3V VOVP1 - 3.9 4.1 4.3 V
Over-Voltage Protection 5V VOVP2 - 5.8 6.1 6.5 V
Over-Voltage Protection 12V VOVP3 - 13.9 14.5 14.9 V
Under-Voltage Protection 3.3V VUVP1 - 2.0 2.6 2.8 V
Under-Voltage Protection 5V VUVP2 - 3.0 3.6 3.9 V
Under-Voltage Protection 12V VUVP3 - 6.0 7.2 8.0 V
Under-Voltage Sense 3.3V For PG Low VUVS1 - 2.5 2.8 3.0 V
Under-Voltage Sense 5V For PG Low VUVS2 - 4.0 4.3 4.5 V
Under-Voltage Sense 12V For PG Low VUVS3 - 9.4 10.1 10.4 V
Over-Power Protection. VOPPS VUVAC = 1.5V 2.02 2.4 2.66 V
Negative Voltage Protection: Voltage
Level VNVP - 1.9 2.05 2.2 V
Negative Voltage Protection: Source
Current INVP RI = 75KΩ 50 61 72 μA
Timing For Over-Voltage Protection tOVP RI = 75KΩ 0.5 0.7 1.3 ms
Timing For Under-Voltage Protection tUVP RI = 75KΩ 0.9 2.4 3.8 ms
Timing For Under-Voltage Sense for
PG Low tUVS RI = 75KΩ 0.5 1.2 1.9 ms
Timing for Over-Power-Protection tOPP RI = 75KΩ 4.0 7.0 10.0 ms
Timing for Negative Voltage Protection tNVP RI = 75KΩ 4.0 7.0 10.0 ms
Reference Voltage VREF IFB = 0.5mA, Tamb = 25°C 2.475 2.5 2.525 V
Line Regulation REGLI-FB 4 < VFB < 16V - 1 - MV/V
Bypass
Regulator
(FB1,VREF1,
FB2,VREF2) Output Sinking Current
Capability IOUT-FB VFB > 2V 10 - - mA
PG Delay tPG RI = 75KΩ 200 300 400 ms
UVAC Voltage Sense for
PG VUVAC - 0.65 0.7 0.75 V
PG Output Rising Time tR CL = 100pF - 1 - us
PG Falling Time tF CL = 100pF - 300 - ns
PG Output Saturation
Level VOL2 IPG = 5mA - - 0.5 V
PG
PG Leakage Current
Collector ION2 VPG = 5V - - 1 μA
SD6109
Characteristics Symbol Test condition Min. Typ. Max. Unit
PSON Input Threshold
Level VPSON - 1 1.4 2.0 V
Remote Input Driving
Current IPSON - - - 0.5 mA
Timing PSON to On/Off
On
Off (PS-off)
tPSON(ON)
tPSON(OFF)
RI = 75kΩ
20
10
40
20
50
30
ms
Remote
Control
Timing PG low to Power
Off tPSOFF RI = 75kΩ 2 4.8 6.5 ms
Reference Voltage V2.5 - 2.45 2.5 2.55 V
Input Bias Current IIB - - - 0.1 μA
Open-Loop Voltage Gain AVOL - 50 60 - dB
Unity Gain Bandwidth BW - 0.3 1 - MHz
Error
Amplifier
Power Supply Rejection
Ratio PSRR 50 - - dB
Oscillator PWM Frequency FOSC RI = 75kΩ 60 65 70 kHz
Charge Current ISS RI = 75kΩ 4.0 5.7 7.0 μA Soft-Start
Duty Cycle DC - 85 - 93 %
Output Voltage Low VOL Io = 5mA - - 0.5 V
Output Voltage High VOH V12 = 12V 4 - - V PWM
Output Output Impedance of
VOH RO - 1.5 - 3.3 kΩ
PIN CONFIGURATIONS
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FB2
VREF2
VREF1
FB1
SD
6109
1 20
2 19
3 18
4
5 16
6 15
7 14
8 13
9 12
10 11
17
SS
PG
OP1
OP2
V12
NVP
UVAC
OPP
V5
V33
PSON
COMP
IN
RI
VCC
GND
SD6109
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PIN DESCRIPTIONS
Pin No. Pin Name I/O Description
1 PSON I Remote switch input for CPU or controller. Control the PWM Output.
2 V33 I 3.3V over-voltage/under-voltage control sense input.
3 V5 I 5V over-voltage/under-voltage control sense input.
4 OPP I Over-power sense input.
5 UVAC I AC fail detection.
6 NVP I The protection input for negative output.
7 V12 I 12V over-voltage/under-voltage control sense input.
8 OP2 O The totem-pole output drivers of push-pull PWM. The maximum duty
cycle (OP1 or OP2) is 46%.
9 OP1 O The totem-pole output drivers of push-pull PWM.
10 PG O PG logic output, 0 or 1 (open-collector). PG=1 means that the power is
good for operation.
11 FB2 O Output of second converter regulation loop.
12 VREF2 I Reference comparison input for second converter regulation loop. 2.5V.
13 VREF1 I Reference comparison input for first converter regulation loop. 2.5V.
14 FB1 O Output of first converter regulation loop.
15 GND - Ground.
16 COMP I/O Error amplifier output and the input of the PWM comparator.
17 IN I The negative input of error amplifier. The positive input of error amplifier
is connected to 2.5V reference voltage.
18 SS I/O The soft-start. It is settable through external capacitor. The current
source output at this pin is 5.7uA and the voltage is clamped at 2.5V.
19 RI I Connected to external resistor for the reference setting.
20 VCC - Supply voltage. It is connected to 5V-standby.
SD6109
FUNCTION DESCRIPTION
The SD6109 is a power management IC for computers. It integrates various monitoring functions and protections,
such as AC fail detection, over power protection, negative voltage protection, over/under voltage protection and
provides power down signal for PG. Built-in high precision oscillator provides accurate protection and delay time
for monitoring. And internal regulators TL431 are used for stable output 3.3V and 5V, with few peripheral
components. Built-in soft-start decreases stress of transformer against saturation. SD6109 used for pull-push or
half-bridge power system with high efficiency and stability.
1. TIMING DIAGRAM
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SD6109
2. Remote Switch Control (PSON)
The PC generates the remote switch control signal which is connected to PSON. When the control signal is low,
PC power is on. And when the control signal is high, PC power is off..
3. AC Fails Detection (UVAC)
The AC line voltage is coupled from the primary side to the secondary side through the main transformer, and
UVAC is connected to the secondary side by a resistor. When UVAC voltage drops below 0.7V and maintains
this situation over 200us, the PG signal will be pulled low , and it indicates that the AC line is power-down. The
voltage amplitude of the PWM switching signal from the secondary side is proportional to the AC line voltage.
Adjusting the ratio of the voltage divider can set the threshold for the power-down.
4. Over Power Protection (OPP)
The over power protection is designed to detect over power and short circuit.. When the voltage of OPP is higher
than 2.4V and maintain this situation over 7msec, PG will be pulled low and the power outputs will be locked
5. Negative Voltage Protection (NVP)
The negative voltage protection is designed to provide under voltage protection for negative voltage output.
Overload and short circuit can cause under voltage of negative voltage output.. When the voltage of NVP is
higher than 2.1V and this situation exists for longer than 7msec, the power outputs will be off and be locked.
Adjusting the resistor will set the threshold for locking the power outputs off. The threshold is determined by:
VNVP=INVP X (R1+R2)+V-12V
VNVP=INVP X R1+V-5V-0.7V
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SD6109
TYPICAL APPLICATION CIRCUIT
Note: The circuit and parameters are for reference only, please set the parameters of the real application
circuit based on the practical test.
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SD6109
DETAIL APPLICATION CIRCUIT
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D20
FR152
PFC
(SA
7257)
321
PS
ON
+3.3V+5V
POSN
V33
V5
OPP
UVAC
NVP
V12
OP2
OP1
PG FB2
VREF2
VREF1
FB1
GND
COMP
IN
SS
RI
VCC
IC1
SD
6109
R48
75K 1/8W
R49
100 1/8W
+12V
R43
15K
1/8WC
30103Z100V
VP1
10K1/10W
R44
1.5K
1/8W
R45
27K
1/8W
C31
401K50V
R51
47K 1/2W
R50
4.7K 1/8W
PG
+5V
Uvac
-12V
-5V
R46
24K 1/8WR
47
100K 1/8W
D25
IN4148
D19
IN4148
R42
330 1/8W
Q6
2SC
945
C29
1F/50V
D21FR152
D22FR152
Q7
2SC945
C36
473/50V
T2A
TEE119 T8P2T2
D18
FR152
R41
1.5K 1/4W
R60
10 1/2W 5VS
BR59
75K
1/8W
C35473/50V
VR2
1K1/10W
R57
2K 1/8W
R54
24K
1/8W
C32
103Z/100V
Fb1
Vref1
Vref2
Fb2
R56
15.8K 1/8W
C34
104Z/50V
C33
104Z/50V
R55
12K 1/8W
R54
12K 1/8W
R53
6.25K 1/8W
+5V
+12V
AC3P
F15A
/ 630V
VZ1
471
RTH
I SD
15
CX
1471nF/275AC
LF1
9mH
CX2
222nF/275AC
BD
1
KBU
606
C1680
D23
IN4148
D24
IN4148
F/200VC2
680 F/200V
R1330K/1/2W
R2330K/1/2W
ZNR1TVR07241KS
ZNR2TVR07241KS
C6
1F/50V
D3
FR152
R6
39 1/2W
R5
2.2 1/2W
D4 FR
152R
9 39 1/2W
R8
22 1/2W
Q1
2SC3320
Q2
2SC3320
D1
FR107
D2
FR107
C3
105K/250V
ATE
ER35T1
R3
47 5WC
4222Z/1K
V
D5
FR107
R11
4.7 2WR
10100K
1/2W
C7
103V/1KV
T1
R244.7 1/2W
R254.7 1/2W
C15
103Z/200VC
16103Z/200V
C5
1F/50V
L
L3
D11 FR
152S
D3A
F16C20C
FD2A
F16C20C
SD
1A S
BL3040PT
SD
2A S
BL3040PT
Uvac
D9 FR
152SD
2B
SBL3040PT
D10 FR
152FD
2B F16C
20CFD
3B F16C
20CD
12 FR152
D14 IN
4148
SD
1B S
BL3040PT
L10P
L4LT
C19
2200F/16V
C21
680F/16V
C17
2200F/10V L51.6#5.5TSL6
1.6#5.5TS
C18
2200F/10V
C20
2200F/16V
C22
680F/16V
C23
2200F/10V
C24
2200F/10V
L71.6#5TS
R27
47 1WR
28100
1/2W
D15
FR152
R29
270 1W
D13
FR152
D16
FR152
R30
1 2W
R26
150 2W
+12V
+5V
-5V
-12V
+3.3V
R39
15 2W
R38
10 1/8W
C28
104Z/50V
+3.3VS
+5VS
B
Vref1
R35
51 1/8WR
341K 1/8W
R37
620 1/8WC
26103Z/100V
C27
105Z/50VR
361.8K
1/8W
Fb1
C25
0.47F/50V
R32
100 1/8WR
314.7 1/2W
R33
22 1/8W
Q5
KS
A928A
R12
1.5M 1/4W1 2 3 4
5678P
GN
D
VC
C
FBN
CD D D
SD
484
C10
104K/50VC
8104K
/50V
D7 IN
4148R
161K
1/8W
C922 3K/50V
U1
KPC
817
T3ATE
EL19T7P
7
D17
FR152
FD1
SB
302
FD5
SB
302
C14
47F/50V
R18
47 1/8W
R19
510 1/8W
Fb2
C13
104K/ 50V R
2210K
1/8WVref2 R20251K 1/8W
C11
1000F/10V
SGN
D
D26
FR152
R21
24K 1/8W
L1R
4*20
C12
680F/16V
R23
100 1/2W
SD6109
PACKAGE OUTLINE
DIP-20-300-2.54 UNIT: mm
MOS DEVICES OPERATE NOTES:
Electrostatic charges may exist in many things. Please take following preventive measures to prevent effectively
the MOS electric circuit as a result of the damage which is caused by discharge:
The operator must put on wrist strap which should be earthed to against electrostatic.
Equipment cases should be earthed.
All tools used during assembly, including soldering tools and solder baths, must be earthed.
MOS devices should be packed in antistatic/conductive containers for transportation.
Disclaimer:
• Silan reserves the right to make changes to the information herein for the improvement of the design and performance without further notice!
• All semiconductor products malfunction or fail with some probability under special conditions. When using Silan products in system design or complete machine manufacturing, it is the responsibility of the buyer to comply with the safety standards strictly and take essential measures to avoid situations in which a malfunction or failure of such Silan products could cause loss of body injury or damage to property.
• Silan will supply the best possible product for customers!
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