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參數(shù)資料
| 型號(hào)： | OZ968 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | SMBus Smart Inverter Controller |
| 中文描述： | 智能變頻控制器的SMBus |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 47K |
| 代理商： | OZ968 |
OZ968
06/15/00
Copyright 1999 by O
2
Micro
OZ968-SF-1.5
All Rights Reserved
Page 1
U.S. Patent #5,619,402
SMBus Smart Inverter Controller
FEATURES
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
32-level dimming and 256-level contrast
control via SMBus
High efficiency, 90% typical
Supports both floating secondary and
grounded secondary designs
ORDERING INFORMATION
OZ968G
- 16-pin plastic SOP
GENERAL DESCRIPTION
The OZ968 is a unique single-stage, high-
efficiency, CCFL backlight controller. It drives a
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).
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.
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, 150
μ
A in
standby mode.
The OZ968 is available in a 16-pin SOP pack-
age. It is specified over the commercial tempera-
ture range 0oC to +70oC.
TYPICAL APPLICATION CIRCUIT
Figure 1. Typical Application Circuit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
FB
CMP
SST
ADJ
CNT
RT
CT
GND
NDR
PDR
OVP
SMBC
SMBD
VSEQ
SCP
VDD
OZ968
CCFL
1:40
20V
5V
CONTRAST
SMBDATA
ENABLE
SMBCLCK
R10
100k
D1
1N4148
C6
22p/3KV
R2
120k
Q1
Si4559EY/
N
Q2
Si4559EY/P
Q4
3904
3904
Q5
R8
10k
Q3
3906
R3
3.3k
R4
200k
R5
10k
R7
0.1ohm
D2
1N4148
R9
1k
C3
0.47u
C2
0.1u
C1
47u/
25v
C7
4.7u
R6
C4
C5
0.1u
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OZ968G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SMBus Smart Inverter Controller |
| OZ990 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Power Management Units (PMUs) |
| OZ990S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Manager Smart PMU/GPIO |
| OZ992 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Intelligent Manager Smart ACPI GPIO/SCI |
| OZ9926 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:OZ9926電路圖 |
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