Datasheet > OZ968G

OZ968G

更新时间： 2024-11-30 22:27:43

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
6页	50K
描述
SMBus Smart Inverter Controller

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中文翻译

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OZ968G 数据手册

OZ968

SMBus Smart Inverter Controller

GENERAL DESCRIPTION

FEATURES

The OZ968 is a unique single-stage, high-

efficiency, CCFL backlight controller. It drives a

•

Single-stage power conversion

Constant frequency design eliminates inter-

ference with LCDs

Built-in open-lamp protection and short-

circuit protection

Reliable 2-winding transformer design elimi-

nates arcing failures and the need for fold-

back wiring

zero-voltage-switching circuit and provides a

near sinusoidal output voltage and current wave-

forms for a CCFL backlight. Typical operating

frequency ranges from 30KHz to 100KHz. These

advances drive the OZ968 beyond comparable

conventional inverter designs with two power

conversion stages (one operates at a variable

frequency, the other at a constant frequency).

•

32-level dimming and 256-level contrast

control via SMBus

•

High efficiency, 90% typical

Supports both floating secondary and

grounded secondary designs

Operating in a PWM push-pull drive, the trans-

former in an OZ968 backlight inverter requires

only one primary winding and one secondary

winding. The secondary winding requires no fold-

back treatment.

ORDERING INFORMATION

The OZ968 supports a bi-directional, two-wire

bus, data transmission protocol to control dim-

ming (32 levels) and contrast (256 levels). Sup-

ply current is 1mA in active mode, 150µA in

standby mode.

OZ968G - 16-pin plastic SOP

The OZ968 is available in a 16-pin SOP pack-

age. It is specified over the commercial tempera-

ture range 0 C to +70 C.

TYPICAL APPLICATION CIRCUIT

20V

SMBCLCK

SMBDATA

ENABLE

47u/

25v

CONTRAST

OZ968

1:40

0.1u

VDD 16

SCP 15

22p/3KV

3.3k

3904

CMP

SST

ADJ

CNT

CCFL

0.1u

VSEQ 14

SMBD 13

SMBC 12

OVP 11

Si4559EY/P

0.47u

1N4148

3906

2.2k

4.7u

200k

1N4148

Si4559EY/

3904

PDR 10

R10

10k

0.1ohm

100k

10k

120k

220p

GND

NDR

Figure 1. Typical Application Circuit

06/15/00

OZ968-SF-1.5

Page 1

U.S. Patent #5,619,402

12 3 4 5 6

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