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PDF SFA0002 Data sheet ( Hoja de datos )
| Número de pieza | SFA0002 | |
| Descripción | PWM Controller | |
| Fabricantes | Sanken | |
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Primary Side Regulation
PWM Controller for Automotive Applications
SFA0002
Data Sheet
Description
The SFA0002 is the switching power supply IC for
flyback circuit and has high accuracy error amplifier.
When the load of the power supply circuit becomes
light, the operation of IC becomes the burst oscillation
mode in order to improve the circuit efficiency.
By employing the primary side regulation, the IC
realizes low component counts and design-friendliness,
leading to downsizing and standardization of the power
supply circuit.
Features
● AEC-Q100 Qualified
● Current Mode Type PWM Control
(Swithing frequency can be adjusted by external
capacitor)
● Reducing External Component Count by Primary Side
Regulation
● Built-in High Accuracy Error Amplifier
( VFB = 2.5 V ± 2%, −40°C to 125°C)
● Operation Mode
Normal Operation: PWM Mode
Light Load Operation: Burst Oscillation
● Soft Start Function
(Startup time can be adjusted by external capacitor)
● Drive Output Stop Function
● Protections:
Overcurrent Protection (OCP): Pulse-by-Pulse
Overload Protection (OLP): Auto-restart
Thermal Shutdown Protection (TSD) with hysteresis:
Auto-restart
Package
SOP8
Not to scale
Specifications
● Power Supply Voltage is VCC = 36 V (max.)
● Adjustable Swithing Frequency (20 kHz to 200 kHz)
Applications
For following Isolation auxiliary power supply:
● Inverter
● On-board Charger (OBC)
● Battery Management System (BMS), etc.
Typical Application
T1
R1 C1
C2 R2
D1
R11
C3
Q1 R4
R3
R5
R6 C6
SFA0002
5
FREQ
4
SS
63
COMP GND
7 DRIVE
FB 2
8 OCP
1
VCC
C4
C5
C10
C7
R7 R8
R10
R9
D2
C8
D3 VOUT(+)
C9
VOUT(-)
SFA0002-DSE Rev.1.0
SANKEN ELECTRIC CO., LTD
Nov. 17, 2016
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016
1
1 page  
SFA0002
Parameter
Minimum Drive Voltage
Minimum On Time
Protection Function
Leading Edge Blanking
Time*
OCP Threshold Voltage
OLP Delay Time
Drive Stop Threshold Voltage
Thermal Shutdown Operating
Temperature*
Thermal Shutdown Release
Temperature *
Symbol
VDRIVE(MIN)
tON(MIN)
tBW
VOCP
tOLP
VST
TJH(TSD)
TJL(TSD)
Conditions
VCC ≥ 6 V,
FREQ = 3 V,
one pulse
OCP = 1 V,
DRIVE = 680 pF
SS = 10 nF
Min. Typ. Max. Unit
4 —— V
— 170 —
ns
— 100 —
0.46 0.5 0.54
32 42 52
3.5 4.0 4.5
150 165 —
— 150 —
ns
V
ms
V
°C
°C
Remarks
* Design assurance.
SFA0002-DSE Rev.1.0
SANKEN ELECTRIC CO., LTD
Nov. 17, 2016
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016
5
5 Page 
SFA0002
VCC(ON)
tOLP
tOLP × 8
VCC(OFF)
VST
DRIVE
VOCP
Limited by overcurrent
protection
VOCP
Overcurrent status
When overcurrent status is released,
the overload protection is also released.
Figure 10-2. Protection Function
When the drive stop signal is input to the
SS pin, and then the SS pin voltage
becomes VST or more, the IC stops the
DRIVE pin output signal.
SFA0002-DSE Rev.1.0
SANKEN ELECTRIC CO., LTD
Nov. 17, 2016
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet SFA0002.PDF ] | |
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