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STR-W6735 Datasheet

  • STR-W6735

  • Quasi-Resonant Topology Primary Switching Regulators

  • 414.35KB

  • 14頁

  • ALLEGRO   ALLEGRO

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STR-W6735
Quasi-Resonant Topology
Primary Switching Regulators
Features and Benefits
鈻?/div>
Quasi-resonant topology IC
鈬?/div>
Low EMI noise and soft
switching
鈻?/div>
Bottom-skip operation
鈬?/div>
Improved system efficiency
over the entire output load by avoiding increase of
switching frequency
鈻?/div>
Standby burst mode operation
鈬?/div>
Lowers input power at
very light output load condition
鈻?/div>
Avalanche-guaranteed MOSFET
鈬?/div>
Improves system-
level reliability and does not require V
DSS
derating
鈻?/div>
500 V / 0.57
惟,
160 W (120 Vac input)
Description
The STR-W6735 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 operation to turn on the
internal MOSFET at close to zero voltage (V
DS
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 160 W with a 120 Vac input. The bottom-skip function skips
the first bottom of V
DS
and turns on the MOSFET at the second
bottom point, to minimize an increase of operational frequency
at light output load, improving system-level efficiency over
the entire load range.
There are two standby functions available to reduce the input
power under very light load conditions. The first is an auto-burst
mode operation that 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 the auto-burst mode.
The soft-start function minimizes surge voltage and reduces
power stress to the MOSFET and to the secondary rectifying
Continued on the next page鈥?/div>
Continued on the next page鈥?/div>
Package: 6-pin TO-220
Typical Application
+B
ErrAmp
P
A
S1
GND
Standby
ON/OFF
LowB
S2
D
1
4
V
CC
D
STR-W6735
B
SI
Standby
Out
GND
Cont
6
FB
3
7
5
S/GND
RX
OCP
/BD
SS
/OLP
A
B
For ErrAmp, Sanken SE series device recommended
For SI, Sanken linear regulator IC recommended
CX
ROCP
28103.30-5

STR-W6735 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 停產(chǎn)

  • STR-W6700

  • 散裝

  • 停產(chǎn)

  • 隔離

  • 是

  • 500V

  • 18.2 V

  • 9.7V ~ 35V

  • -

  • 19kHz ~ 25kHz

  • 160 W

  • 限流，過載，過壓

  • 軟啟動

  • -20°C ~ 115°C（TA）

  • TO-220-6 全封裝，成形引線

  • TO-220F-6L

  • 通孔

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