Datasheet > R2A20111SP

R2A20111SP

更新时间： 2024-11-21 03:38:51

品牌	Logo	应用领域
瑞萨 - RENESAS		功率因数校正控制器
页数	文件大小	规格书
41页	309K
描述
Power Factor Correction Controller IC

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R2A20111SP 数据手册

R2A20111SP/DD

Power Factor Correction Controller IC

REJ03F0231-0100

Rev.1.00

Mar 28, 2007

Description

The R2A20111 is a power-factor correction (PFC) controller IC.

This IC adopts continuous conduction mode as PFC operation.

Various functions such as constant power limit, overvoltage detection, overcurrent detection, soft start, feedback-loop

disconnection detection, and holding function of PFC operation through momentary outage (PFC hold function) are

incorporated in a single chip. These functions reduce external circuitry.

The constant power limit function allows to eliminate a significant amount of coil noise which is generated due to

overcurrent detection operation in case of conventional overload.

The PFC hold function enables quick recovery by continuing PFC operation after momentary outage. The hold time

can be adjusted by an external capacitance.

Overcurrent detection pin is separately provided.

Latch mode shutdown function is incorporated.

A soft-start control pin provides for the easy adjustment of soft-start operation, and can be used to prevent overshooting

of the output voltage.

Features

•

Maximum ratings

⎯ Power-supply voltage Vcc: 24 V

⎯ Operating junction temperature Tjopr: – 40 to 125°C

Electrical characteristics

•

⎯ VREF output voltage VREF: 5.0 V ± 3%

⎯ UVLO operation start voltage VH: 10.5 ± 0.9 V

⎯ UVLO operation stop voltage VL: 9.0 ± 0.7 V

⎯ PFC output maximum ON duty Dmax-out: 95% (typ.)

Functions

•

⎯ Constant power limit function

⎯ Continuous conduction mode

⎯ Hold function of PFC operation on momentary outage (PFC hold function)

⎯ Overvoltage detection

⎯ Overcurrent detection

⎯ Soft start

⎯ Feedback loop disconnection detection

⎯ IC shutdown function

⎯ Package lineup: SOP-16 and DILP-16

Applications

•

Flat panel display

Projector

Desktop PC

White goods

REJ03F0231-0100 Rev.1.00 Mar 28, 2007

Page 1 of 40

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