SFA0002 Datasheet, PDF (1/12 Pages) Sanken electric – PWM Controller for Automotive Applications

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
( V_FB = 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 V_CC = 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
C2 _R2
R1
C1
R11
D1
D2
C7
SFA0002
C5
C3
5
FREQ
4
SS
6
3
Q1 _R4
COMP GND
R3
7 _DRIVE
FB ²
R7 R8
8 _OCP
1
VCC
R5
C10
R10
C8
R6
C6
C4
R9
D3
VOUT(+)
C9
VOUT(-)
SFA0002-DSE Rev.1.0
SANKEN ELECTRIC CO., LTD
1
Nov. 17, 2016
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016