資料介紹
OB2202 is a highly integrated Quasi-Resonant (QR)
controller optimized for high performance offline
flyback converter applications.
At normal load condition, it operates in QR mode
with minimum drain voltage switching. To meet the
CISPR-22 EMI starting at 150KHz, the maximum
switching frequency is internally limited to 130KHz.
It operates in PFM mode for high power conversion
efficiency at light load condition. When the loading is
very small, the IC operates in ‘Extended Burst Mode’
to minimize the switching loss. As a result, lower
standby power consumption and higher conversion
efficiency can be achieved.
OB2202 offers comprehensive protection coverage
including Cycle-by-Cycle Current Limiting, VCC
Under Voltage Lockout(UVLO), Programmable
Output Over Voltage Protection(OVP), VCC Clamp,
Gate Clamp, Over Load Protection(OLP), On-chip
Thermal Shutdown, Programmable Soft Start,
Programmable Brownout Protection, Programmable
Over Power Protection (OPP) Compensation, and
External Latch Triggering, Max On-time Limit, etc.
OB2202 is offered in SOP-8 and DIP-8 packages.
controller optimized for high performance offline
flyback converter applications.
At normal load condition, it operates in QR mode
with minimum drain voltage switching. To meet the
CISPR-22 EMI starting at 150KHz, the maximum
switching frequency is internally limited to 130KHz.
It operates in PFM mode for high power conversion
efficiency at light load condition. When the loading is
very small, the IC operates in ‘Extended Burst Mode’
to minimize the switching loss. As a result, lower
standby power consumption and higher conversion
efficiency can be achieved.
OB2202 offers comprehensive protection coverage
including Cycle-by-Cycle Current Limiting, VCC
Under Voltage Lockout(UVLO), Programmable
Output Over Voltage Protection(OVP), VCC Clamp,
Gate Clamp, Over Load Protection(OLP), On-chip
Thermal Shutdown, Programmable Soft Start,
Programmable Brownout Protection, Programmable
Over Power Protection (OPP) Compensation, and
External Latch Triggering, Max On-time Limit, etc.
OB2202 is offered in SOP-8 and DIP-8 packages.
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