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PDF STR-W6753 Data sheet ( Hoja de datos )
| Número de pieza | STR-W6753 | |
| Descripción | Quasi-Resonant Topology Primary Switching Regulator | |
| Fabricantes | Sanken | |
| Logotipo |  |
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 1. - Switching Regulator - Allegro  Hay una vista previa y un enlace de descarga de STR-W6753 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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STR-W6753
Quasi-Resonant Topology
Primary Switching Regulators
Features and Benefits
▪ Quasi-resonant topology IC Low EMI noise and soft
switching
▪ Bottom-skip mode Improved system efficiency over
the entire output load by avoiding increase of switching
frequency
▪ Auto-Standby mode Lowers input power at very light
output load condition
▪ Avalanche-guaranteed MOSFET Improves system-level
reliability and does not require VDSS derating
▪ 650 V / 1.70 Ω
▪ Various protections Improved system-level reliability
Continued on the next page…
Package: 6-pin TO-220
Not to scale
Description
The STR-W6753 is a quasi-resonant topology IC designed for
SMPS applications. It shows lower EMI noise characteristics
than conventional PWM solutions, especially at greater than
2 MHz. It also provides a soft-switching mode to turn on the
internal MOSFET at close to zero voltage (VDS bottom point)
by use of the resonant characteristic of primary inductance
and a resonant capacitor.
The package is a fully molded TO-220, which contains the
controller chip (MIC) and MOSFET, enabling output power up
to 58 W with universal input or 120 W with a 230 VAC input.
The bottom-skip mode skips the first bottom of VDS and turns
on the MOSFET at the second bottom point, to minimize an
increase of operating frequency at light output load, improving
system-level efficiency over the entire load range.
There are two standby modes available to reduce the input power
under very light load conditions. The first is Auto-Standby
mode, which is internally triggered by periodic sensing, and
the other is a manual standby mode, which is executed by
clamping the secondary output. In general applications, the
manual standby mode reduces the input power further compared
to Auto-Standby mode.
The soft-start mode minimizes surge voltage and reduces
power stress to the MOSFET and to the secondary rectifying
Continued on the next page…
Typical Application Diagram
P S1
+B
ErrAmp A
D
1
4
STR-W6753
VCC
Controller
(MIC)
6
FB
37
S/GND OCP/BD
5
SS /OLP
ROCP
RX
CX
D
S2
B SI
GND
Standby
ON/OFF
LowB
Standby
Out
GND
A For ErrAmp, Sanken SE series device recommended
B For SI, Sanken linear regulator IC recommended
28103.31
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
1 page  
STR-W6753
Quasi-Resonant Topology
Primary Switching Regulators
ELECTRICAL CHARACTERISTICS
Characteristic
Symbol
Test Conditions
Min. Typ.
ELECTRICAL CHARACTERISTICS for Controller (MIC)1, valid at TA = 25°C, VCC = 20 V, unless otherwise specified
Max. Units
Power Supply Start-up Operation
Operation Start Voltage
Operation Stop Voltage
Circuit Current In Operation
Circuit Current In Non-Operation
Oscillation Frequency
Soft Start Operation Stop Voltage
Soft Start Operation Charging Current
VCC(ON)
VCC(OFF)
ICC(ON)
ICC(OFF)
fosc
VSSOLP(SS)
ISSOLP(SS)
VCC = 0→20 V
VCC = 20→8.8 V
VCC = 15 V
VSS/OLP increasing
VSS/OLP = 0 V
16.3
8.8
–
–
19
1.1
–710
18.2
9.7
–
–
22
1.2
–550
19.9
10.6
6
100
25
1.4
–390
V
V
mA
μA
kHz
V
μA
Normal Operation
Bottom-Skip Operation Threshold Voltage 1
Bottom-Skip Operation Threshold Voltage 2
Overcurrent Detection Threshold Voltage
OCP/BD Terminal Outflow Current
Quasi-Resonant Operation Threshold Voltage 1
Quasi-Resonant Operation Threshold Voltage 2
FB Terminal Threshold Voltage
FB Terminal Inflow Current (Normal Operation)
VOCPBD(BS1)
VOCPBD(BS2)
VOCPBD(LIM) VOCP/BD falling
IOCPBD VOCP/BD = –0.95 V
VOCPBD(TH1) VOCP/BD falling
VOCPBD(TH2) VOCP/BD rising
VFB(OFF) VFB rising
IFB(ON) VFB = 1.6 V
–0.720
–0.485
–0.995
–250
0.28
0.67
1.32
600
–0.665
–0.435
–0.940
–100
0.40
0.80
1.45
1000
–0.605
–0.385
–0.895
–40
0.52
0.93
1.58
1400
V
V
V
μA
V
V
V
μA
Standby Operation
Standby Operation Start Voltage
Standby Operation Start Voltage Interval
Standby Non-Operation Circuit Current
FB Terminal Inflow Current, Standby Operation
FB Terminal Threshold Voltage, Standby Operation
Minimum On Time
VCC(S)
VCC(SK)
ICC(S)
IFB(S)
VFB(S)
tON(MIN)
VCC = 0→15 V, VFB = 1.6 V
VCC(SK) = VCC(S) – VCC(OFF)
VCC = 10.2 V, VFB = 1.6 V
VCC = 10.2 V, VFB = 1.6 V
VCC = 15 V, VFB rising
10.3 11.1 12.1
V
1.10 1.35 1.65
V
– 20 56 μA
– 4 14 μA
0.55 1.10 1.50
V
0.5 0.8 1.2 μs
Protection Operation
Maximum On Time
tON(MAX)
27.5 32.5 39.0 μs
Overload Protection Operation Threshold Voltage
VSSOLP(OLP)
4.0 4.9 5.8 V
Overload Protection Operation Charging Current
ISSOLP(OLP) VSS/OLP = 2.5 V
–16 –11 –6 μA
Overvoltage Protection Operation Voltage
VCC(OVP) VCC = 0→30 V
25.5 27.7 29.9
V
Latch Circuit Holding Current2
ICC(H)
VCC(OFF) – 0.3 V
– 45 140 μA
Latch Circuit Release Voltage2
VCC(La.OFF) VCC = 30→6 V, OVP operating
6.0 7.2 8.5 V
ELECTRICAL CHARACTERISTICS for MOSFET, valid at TA = 25°C, unless otherwise specified
Drain-to-Source Breakdown Voltage
VDSS
ID = 300 μA
650 –
–V
Drain Leakage Current
IDSS VDS = 650 V
– – 300 μA
On Resistance
RDS(on)
ID = 1.4 A
– – 1.7 Ω
Switching Time
tf
– – 400 ns
Thermal Resistance
Rθch-F Channel to internal frame
– – 2.0 °C/W
1Current polarity with respect to the IC: positive current indicates current sink at the terminal named, negative current indicates source at the
terminal named.
2The latch circuit means a circuit operated OVP and OLP.
28103.31
SANKEN ELECTRIC CO., LTD.
5
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet STR-W6753.PDF ] | |
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