PWM Controller. STR5A464S Datasheet

STR5A464S Controller. Datasheet pdf. Equivalent

STR5A464S Datasheet
Recommendation STR5A464S Datasheet
Part STR5A464S
Description Off-Line PWM Controller
Feature STR5A464S; For Non-Isolated Off-Line PWM Controllers with Integrated Power MOSFET STR5A460 Series Data Sheet .
Manufacture Sanken
Datasheet
Download STR5A464S Datasheet




Sanken STR5A464S
For Non-Isolated
Off-Line PWM Controllers with Integrated Power MOSFET
STR5A460 Series
Data Sheet
Description
The STR5A460 Series is power ICs for switching
power supplies, incorporating a MOSFET and a current
mode PWM controller IC for non-isolated Buck
converter and Inverting converter topologies.
The operation mode is automatically changed, in
response to load, to the fixed switching frequency, to the
switching frequency control, and to the burst oscillation
mode. Thus the power efficiency is improved.
The product achieves high cost-performance power
supply systems with few external components.
Features
Buck converter
Inverting converter
Current mode type PWM control
Automatically changed operation mode in response to
load conditions
Fixed switching frequency mode, 60 kHz (typ.)
Green mode, 23 kHz (typ.) to 60 kHz (typ.)
Burst oscillation mode
No need for current detection resistor, building in a
MOSFET used as current sense resistor
Built-in Startup Function
,reducing power consumption, and shortening the
startup time
Built-in Error Amplifier
Random Switching Function
Leading Edge Blanking Function
Soft Start Function
Protections
Overload Protection (OLP): Auto-restart
Overvoltage Protection (OVP): Auto-restart
Thermal Shutdown with hysteresis (TSD): Auto-restart
Typical Application (Buck Convertor, DIP8)
D1 D2
STR5A460D
1
FB
8
S/GND
R2 R3
R1
C4 C3
2
VCC
7
S/GND
L1
DR1
VAC
C1
4
D/ST
6
S/GND
5
S/GND
U1
C2
VOUT
(+)
L2
D3
C5 R4
DR2
(-)
TC_STR5A400_1_R2
Package
DIP8
FB 1
VCC 2
D/ST 4
8 S/GND
7 S/GND
6 S/GND
5 S/GND
SOIC8
VCC 1
FB 2
D/ST 4
8 S/GND
7 S/GND
6 S/GND
5 S/GND
Selection Guide
Electrical Characteristics
fOSC(AVG) = 60 kHz (typ.)
VD/ST = 700V (max.)
Part Number
STR5A464D
STR5A464S
RDS(ON)
(max.)
13.6 Ω
IDLIM
(typ.)
0.41 A
Not to scale
Package
DIP8
SOIC8
Recommended Operating Condition
Buck
Converter
Inverting
Converter
Input Voltage
AC 85 V to AC 265 V
D/ST Input
Voltage
≥ 40 V
Output Voltage
> 11 V
> 27.5 V
Range*
< 27.5 V
< 11 V
*Add a zener diode or a regulator to VCC pin when
target output voltage is high.
Applications
White goods
Auxiliary power supply (lighting equipment with
microcomputer, etc.)
Power supply for motor control (actuator, etc.)
Telecommunication equipment (convertible from
48VDC to 15VDC)
Other Switchung mode power supply, SMPS
STR5A460-DSE Rev.3.5
SANKEN ELECTRIC CO., LTD.
1
Aug. 21, 2018
https://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2013



Sanken STR5A464S
STR5A460 Series
Contents
Description ------------------------------------------------------------------------------------------------------ 1
Contents --------------------------------------------------------------------------------------------------------- 2
1. Absolute Maximum Ratings----------------------------------------------------------------------------- 3
2. Electrical Characteristics -------------------------------------------------------------------------------- 3
3. Performance Curves -------------------------------------------------------------------------------------- 5
4. Block Diagram --------------------------------------------------------------------------------------------- 6
5. Pin Configuration Definitions--------------------------------------------------------------------------- 6
6. Typical Application --------------------------------------------------------------------------------------- 7
7. Physical Dimensions and Marking Diagrams-------------------------------------------------------- 8
7.1 DIP8---------------------------------------------------------------------------------------------------- 8
7.2 SOIC8-------------------------------------------------------------------------------------------------- 9
8. Operational Description ------------------------------------------------------------------------------- 10
8.1 Startup Operation of IC ------------------------------------------------------------------------- 10
8.2 Undervoltage Lockout (UVLO) ---------------------------------------------------------------- 10
8.3 Power Supply Startup and Soft Start Function --------------------------------------------- 10
8.4 Constant Voltage (CV) Control----------------------------------------------------------------- 11
8.4.1 Buck Converter Operation ---------------------------------------------------------------- 12
8.4.2 Inverting Converter Operation ----------------------------------------------------------- 12
8.5 Leading Edge Blanking Function -------------------------------------------------------------- 13
8.6 Random Switching Function -------------------------------------------------------------------- 13
8.7 Operation Mode ----------------------------------------------------------------------------------- 13
8.8 Overload Protection (OLP)---------------------------------------------------------------------- 14
8.9 Overvoltage Protection (OVP) ------------------------------------------------------------------ 14
8.10 Thermal Shutdown (TSD) ----------------------------------------------------------------------- 14
9. Design Notes ---------------------------------------------------------------------------------------------- 15
9.1 External Components ---------------------------------------------------------------------------- 15
9.1.1 Input and Output Electrolytic Capacitor ----------------------------------------------- 15
9.1.2 Inductor --------------------------------------------------------------------------------------- 15
9.1.3 VCC Pin Peripheral Circuit--------------------------------------------------------------- 15
9.1.4 FB Pin Peripheral Circuit ----------------------------------------------------------------- 15
9.1.5 Freewheeling diode-------------------------------------------------------------------------- 16
9.1.6 Bleeder resistance --------------------------------------------------------------------------- 16
9.2 D/ST Pin--------------------------------------------------------------------------------------------- 16
9.3 Inductance Calculation--------------------------------------------------------------------------- 17
9.3.1 Parameter Definition ----------------------------------------------------------------------- 17
9.3.2 Buck Convertor ------------------------------------------------------------------------------ 18
9.3.3 Inverting Convertor ------------------------------------------------------------------------ 22
9.4 PCB Trace Layout -------------------------------------------------------------------------------- 26
10. Pattern Layout Example ------------------------------------------------------------------------------- 28
10.1 Buck Converter ------------------------------------------------------------------------------------ 28
10.2 Inverting Converter------------------------------------------------------------------------------- 29
11. Reference Design of Power Supply ------------------------------------------------------------------ 30
11.1 Buck Converter ------------------------------------------------------------------------------------ 30
11.2 Inverting Converter------------------------------------------------------------------------------- 31
Important Notes---------------------------------------------------------------------------------------------- 32
STR5A460-DSE Rev.3.5
SANKEN ELECTRIC CO., LTD.
2
Aug. 21, 2018
https://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2013



Sanken STR5A464S
STR5A460 Series
1. Absolute Maximum Ratings
● The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
Unless otherwise specified, TA = 25 °C, all S/GND pins (5 pin to 8pin) are shorted.
The pin number of SOIC8 package products is shown in bracket.
Parameter
FB Pin Voltage
VCC Pin Voltage
D/ST Pin Voltage
Drain Peak Current
Maximum Switching Current(1)
MOSFET Power Dissipation
Operating Ambient Temperature
Storage Temperature
Junction Temperature
Symbol
VFB
VCC
VD/ST
IDP
IDMAX
PD1
TOP
Tstg
Tj
Test Conditions
Single pulse,
Within 500 ns pulse
width,
VD/ST 400 V
Negative: Within 2 μs
pulse width
Pins
15
(2 5)
25
(1 5)
45
45
45
(2)
Rating
0.3 to 7
0.3 to 32
0.3 to 700
1.7
0.2 to 0.97
0.2 to 0.91
1.55
1.51
40 to 125
40 to 125
150
Units Remarks
V
V
V
A
5A464D
A
5A464S
5A464D
W
5A464S
°C
°C
°C
(1) Refer to MOS FET Ta-PD curve.
(2) When embedding this hybrid IC onto the printed circuit board (cupper area in a 15mm×15mm)
2. Electrical Characteristics
● The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
Unless otherwise specified, TA = 25 °C, all S/GND pins (5 pin to 8pin) are shorted.
The pin number of SOIC8 package products is shown in bracket.
Parameter
Symbol
Power Supply Startup Operation
Operation Start Voltage
VCC(ON)
Operation Stop Voltage
VCC(OFF)
Circuit Current in Operation
Startup Circuit Operation Voltage
Startup Current
PWM Operation
Average PWM Switching
Frequency
Switching Frequency Modulation
Deviation
ICC(ON)
VST(ON)
ICC(ST)
fOSC(AVG)
Δf
Test
Conditions
Pins
VCC = 12 V
VCC = 13.5 V
VCC = 13.5 V
VD/ST = 100 V
25
(1 5)
25
(1 5)
25
(1 5)
45
25
(1 5)
VFB= 2.44 V
45
45
Min.
13.6
7.3
19
2.7
53
Typ.
15.0
8.0
29
1.5
60
2.8
Max.
16.6
8.7
2.0
39
0.5
67
Units Remarks
V
V
mA
V
mA
kHz
kHz
STR5A460-DSE Rev.3.5
SANKEN ELECTRIC CO., LTD.
3
Aug. 21, 2018
https://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2013





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)