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OZ962 PDF预览

OZ962

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 54K
描述
High-Efficiency Inverter Controller

OZ962 数据手册

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OZ962  
High-Efficiency Inverter Controller  
GENERAL DESCRIPTION  
FEATURES  
The OZ962 is a unique high-efficiency, CCFL  
backlight controller. It generates symmetrical,  
near sinusoidal output voltage and current  
waveforms for driving a CCFL backlight. The  
OZ962 operates in a single, constant frequency,  
pulse-width-modulation (PWM) mode. Typical  
operating frequency ranges between 30 KHz to  
100 KHz, depending on the CCFL and the  
transformer’s characteristics.  
·
·
·
·
Single-stage power conversion, input voltage  
range of 5V to 18V  
Reduces the number of components and board  
size by 30% compared with conventional design  
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 synchronization among multiple  
inverter modules  
Reliable 2-winding transformer design,  
eliminates arcing problems  
Constant frequency, symmetrical, sinusoidal  
drive  
·
·
·
Operating in a PWM push-pull manner, the  
transformer in the OZ962 backlight inverter  
requires only one primary winding and one  
secondary winding, with the secondary winding  
requiring no fold-back treatment.  
·
·
The OZ962 is available in both 16-pin SOIC and  
TSSOP packages. It is specified over the  
o
o
commercial temperature range: 0 C to +70 C.  
ORDERING INFORMATION  
OZ962R - 16 lead TSSOP  
OZ962G - 16-pin plastic SOP  
TYPICAL APPLICATION CIRCUIT  
F1  
1A Fast Fuse  
VDD (+12V)  
ENA  
+
-
C1  
22u  
25V  
R10  
100  
GND  
CN1  
R5  
10K  
C7  
U1  
3
U2  
Q2  
1
16  
REF  
VDD  
OZ962G  
*
*
C8  
68p  
3KV  
2
3
4
5
6
7
8
15  
14  
33T  
2200T  
0.22u  
RT  
CT  
OVP  
4
2
R9  
R1  
C6 2.2u  
50V  
3.5W  
220K 200K C9  
5,6  
-
NC  
.01u  
R7  
100K  
C5  
+
13  
12  
11  
10  
9
SI4559EY  
SCP  
ADJ  
FB  
CLK  
ENA  
NDR  
PDR  
SST  
R14  
220p  
7,8  
R2  
10K  
1.0K  
R6  
30  
C2  
C3  
Q1  
R3  
5.1K  
0.1u  
CMP  
GND  
1
330p  
C4  
0.1u  
R8  
0.5  
R11  
1M  
R4  
15K  
R12  
750  
R13  
100  
Figure 1. Typical Floating Secondary Application  
03/01/00  
ÓCopyright 1999 by O2Micro  
OZ962-SF-2.7  
All Rights Reserved  
Page 1  
U.S. Patent #5,619,402  

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