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PDF STR-G6622 Data sheet ( Hoja de datos )
| Número de pieza | STR-G6622 | |
| Descripción | (STRG66xx) OFF-LINE QUASI-RESONANT FLYBACK SWITCHING REGULATOR | |
| Fabricantes | Allegro MicroSystems | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de STR-G6622 (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
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STR-G6651
OFF-LINE QUASI-RESONANT
FLYBACK SWITCHING REGULATOR
OSC.
FDBK
LATCH
www.DataSheet4U.com
UVLO
OVP
TSD
Dwg. PK-011
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Control Supply Voltage, VIN . . . . . . . 35 V
Drain-Source Voltage, VDS . . . . . . . . 650 V
Drain Current, ID
continuous . . . . . . . . . . . . . . . . . . 2.7 A
single-pulse, tw ≤ 1 ms . . . . . . . . 7.2 A
Avalanche Energy, EAS
single-pulse . . . . . . . . . . . . . . . 158 mJ
Over-Current Protection Voltage Range,
VOCP . . . . . . . . . . . . . . . -0.3 V to +6 V
Insulation RMS Voltage,
VWM(RMS) . . . . . . . . . . . . . . . . . . 2000 V
Package Power Dissipation, PD
control (VIN x IIN(ON)) . . . . . . . . . 0.8 W
total . . . . . . . . . . . . . . . . . . . See Graph
FET Channel Temperature, TJ . . . +150°C
Internal Frame Temperature, TF . . +125°C
Operating Temperature Range,
TA . . . . . . . . . . . . . . . -20°C to +125°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . -40°C to +125°C
The STR-G6651 is specifically designed to satisfy the requirements
for increased integration and reliability in off-line quasi-resonant flyback
converters. This device incorporates the primary control and drive
circuit with a discrete avalanche-rated power MOSFET.
Cycle-by-cycle current limiting, under-voltage lockout with hyster-
esis, over-voltage protection, and thermal shutdown protects the power
supply during the normal overload and fault conditions. Over-voltage
protection and thermal shutdown are latched after a short delay. The
latch may be reset by cycling the input supply. Low-current startup and
a low-power standby mode selected from the secondary circuit completes
a comprehensive suite of features. The device is provided in a five-pin
over-molded TO-220 style package, affording dielectric isolation without
compromising thermal characteristics. Two lead forms are available
(with and without the suffix ‘-LF’) to accommodate printed wiring board
layout or mechanical constraints.
Proven in substantial volumes, the STR-G6651 is a robust low-risk
solution for off-line power supplies particularly where management of
EMI at the source is a significant element of the system design.
FEATURES
I Quasi-Resonant Operation
I Output Power to 66 W
I Low-Loss, Pulse-Ratio-Control Standby Mode
I Temperature-Compensated Pulse-by-Pulse Over-Current Protection
I Latched Over-Voltage and Thermal Protection
I Under-Voltage Lockout with Hysteresis
I Active Low-Pass Filter for Enhanced Light-Load Stability
I Switched Attenuation of Leading-Edge Current-Sensing Signal
I Regulated Soft Gate Drive
I Adjustable Switching Speed for EMI Control
I Overmolded Five-Pin Package
Always order by complete part number: STR-G6651 .
™
1 page  
STR-G6651
OFF-LINE
QUASI-RESONANT FLYBACK
SWITCHING REGULATOR
TYPICAL QUASI-RESONANT FLYBACK CONVERSION USING STR-G6651
WARNING: lethal potentials are present. See text.
4
www.DataSheet4U.com
+
UVLO
REF.
TSD
OVER-VOLT.
PROTECT
DRIVE
REG.
R
FAULT
LATCH
SQ
OSC
1
2
–
+ 1.45 V
–
+ 0.73 V
5
#3
+
+ OUTPUT
VOLTAGE
SENSE
– OUTPUT
Dwg. EK-003-4A
WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit
designs that embody these components must conform with applicable safety requirements. Precau-
tions must be taken to prevent accidental contact with power-line potentials. Do not connect
grounded test equipment.
The use of an isolation transformer is recommended during circuit development and breadboarding.
Recommended mounting hardware torque:
4.34 - 5.79 lbf•ft (6 – 8 kg•cm or 0.588 – 0.784 Nm).
Recommended silicone grease:
Dow Corning SC102, Toshiba YG6260, Shin-Etsu G746., or equivalent
www.allegromicro.com
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet STR-G6622.PDF ] | |
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