Datasheet > OZ965G

OZ965G

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
7页	69K
描述
High-Efficiency Inverter Controller

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中文翻译

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OZ965G 数据手册

OZ965

High-Efficiency Inverter Controller

FEATURES

dimming function with an analog voltage or low

frequency Pulse Width Modulation (PWM)

control.

•

Single-stage power conversion, requiring

only a +5 V voltage source

Reduces the number of components and

board size by 30% compared with

conventional design

•

Operating Principle:

The CCFL tube, transformer secondary, and

capacitor form a resonant circuit. The OZ965

utilizes the low energy loss resonate mode

principle to deliver a very high efficiency inverter.

•

Supports both floating and grounded

secondary designs

90% efficiency vs. typical 75% efficiency of

conventional designs

Internal open-lamp and short-circuit

protections

Wide dimming range

Supports multiple CCFLs

Simple and reliable 2-winding transformer

design

Eliminates leakage current when used in a

floating secondary design

The OZ965 drives the transformer primary with a

variable pulse width voltage directly from the +5v

supply. The resultant primary drive current is

alternately reversing with zero-voltage-switching.

Because of the transformer leakage inductance

and the secondary resonant circuit, the

secondary voltage and current are approximately

sinusoidal. This sinusoid results in very little

harmonic emi/rfi emissions.

•

Constant-frequency

design

eliminates

interference with LCDs

The OZ965 operates at a single, constant

frequency in a PWM mode. Typical operating

frequency ranges between 30 KHz to 200 KHz,

dependent upon the CCFL and transformer

characteristics. Intelligent open-lamp protection

provides design flexibility so various transformer

models/manufacturers may be used.

ORDERING INFORMATION

OZ965G - 16-pin plastic SOP

OZ965R - 16-pin plastic TSSOP

OZ965IG - 16-pin plastic SOP

OZ965IR - 16-pin plastic TSSOP

Its high driving capability allows the OZ965 to

drive high power MOSFETs.

GENERAL DESCRIPTION

The single stage design results in a low cost,

reliable transformer without expensive, less

reliable secondary fold-back treatment. The

transformer does not require a more expensive

center tapped primary.

The OZ965 is a single chip, high-efficiency, Cold

Cathode Fluorescent Lamp (CCFL) backlight

inverter controller whose primary function is to

convert +5 volt DC power to approximately 600

VAC. Additionally, the OZ965 performs the lamp

The OZ965 is available in 16-pin SOP and

TSSOP packages. It is specified over the

commercial temperature range of 0°C to +70°C,

and the industrial temperature range of -40°C to

+85°C.

Figure 1. Typical Application Circuit

ENA

DIM

GND

22u

100k

0.1u

150k

10u

20k

0.1u

15k

17:2200

59.0k

RTN

68p 3kv

REF

VDD

OPS

ENA

NDR

PDR

SST

HCLMP

LCLMP

SCP

ADJ

CMP

GND

470p

10u

0.01u

C10

2.2u

OZ965

0.1u

Si4532

CR3

BAV99L

R13

510k

C11

0.1u

R15

4.3k

R16

100k

R17

1.02k

C12

0.1u

06/20/00

OZ965-SF-3.0

Page 1

U.S. Patent #5,619,402

12 3 4 5 6 7

中文翻译

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与OZ965G相关器件

型号	品牌	获取价格	描述	数据表
OZ965IG	ETC	获取价格	High-Efficiency Inverter Controller
OZ965IR	ETC	获取价格	High-Efficiency Inverter Controller
OZ965R	ETC	获取价格	High-Efficiency Inverter Controller
OZ968	ETC	获取价格	SMBus Smart Inverter Controller
OZ968G	ETC	获取价格	SMBus Smart Inverter Controller
OZ990	ETC	获取价格	Power Management Units (PMUs)
OZ9902	ETC	获取价格	Intelligent Lighting Family
OZ9902C	ETC	获取价格	Intelligent Lighting Family
OZ9904	ETC	获取价格	Intelligent Lighting Family
OZ9904A	ETC	获取价格	Intelligent Lighting Family

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