OB2202 On-Bright Electronics, Inc., OB2202 Datasheet

OB2202

Manufacturer Part Number

OB2202

Description

Quasi-resonant Flyback Pwm Controller

Manufacturer

On-Bright Electronics, Inc.

Datasheet

1.OB2202.pdf (1 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

OB2202CPA

Manufacturer:

ON/安森美

Quantity:

20 000

Company:

H&T Electronics

Part Number:

OB2202CPA

Quantity:

8 000

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GENERAL DESCRIPTION

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

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.

TYPICAL APPLICATION

©On-Bright Electronics

Shutdown,

Programmable

Soft

Start,

- 1 -

Quasi-Resonant Flyback PWM Controller

FEATURES

■

APPLICATIONS

Offline AC/DC flyback converter for

■

Multi-Mode Operation

Quasi-Resonant Operation at Normal Loading

Pulse Frequency Modulation (PFM) Operation at

Light Load

Programmable Brownout Protection and Line

OVP Protection

Burst Mode at No Load

Excellent OPP Compensation

20KHz Minimum Frequency Limit at QR Mode

130KHz Maximum Frequency Limit

Internal Minimum T_off for Ringing Suppression

35us Maximum On Time Limit

50us Maximum Off Time Limit

Internal Leading Edge Blanking

Programmable Soft-start

Cycle-by-cycle Current Limiting

External Latch Triggering

Internal Thermal Shutdown

1A Peak Current Sink/Source Capability

Programmable Output OVP

Power Adaptor and Open-frame SMPS

LCD Monitor/TV/PC/Set-Top Box Power

Supplies

NB/DVD/Portable DVD Power Supplies

OB_DOC_DS_0200

Confidential

OB2202

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