OB2263 datasheet(10/13 Pages) ETC2

10 / 13 page

©On-Bright Electronics

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OB_DOC_DS_63B5

OB2263

Current Mode PWM Controller

Frequency Shuffling

• Protection Controls

Good power supply system reliability is achieved

with its rich protection features including Cycle-by-

Cycle

current

limiting

(OCP),

Over

Load

Protection (OLP) and over voltage clamp, Under

Voltage Lockout on VDD (UVLO).

With On-Bright Proprietary technology, the OCP

threshold tracks PWM Duty cycles and is line

voltage compensated to achieve constant output

power limit over the universal input voltage range

with recommended reference design.

At overload condition when FB input voltage

exceeds power limit threshold value for more than

TD_PL, control circuit reacts to shut down the

output power MOSFET. Device restarts when VDD

voltage drops below UVLO limit.

VDD is supplied by transformer auxiliary winding

output. It is clamped when VDD is higher than

threshold value. The power MOSFET is shut down

when VDD drops below UVLO limit and device

enters power on start-up sequence thereafter.

Confidential to Micro Bridge

OB2263 Datasheet(PDF) 10 Page - List of Unclassifed Manufacturers