OZ965

Features: · 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 · Supports both floating and grounded secondary designs · 90% efficiency vs. typical 75% efficiency of conventional designs · I...

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SeekIC No. : 004438868 Detail

OZ965: Features: · 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 · Supports both floating an...

floor Price/Ceiling Price

Part Number:
OZ965
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/21

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Product Details

Description



Features:

·  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
·  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
·  Constant-frequency design eliminates  interference with LCDs 
 



Specifications

VDD 5.5V
GND +/- 0.3V
Logic inputs -0.3 V to VDD+0.3V
  OZ965 OZ965I
Operating temp. 0   to 70 -40   to 85
Operating junction temp. 150
Storage temp. -55   to 150
  OZ965 OZ965I
Power dissipation
- 16-pin SOP
- 16-pin TSSOP

.720W
.690W
.580W
.550W
Thermal Impedance
- 16-pin SOP
- 16-pin TSSOP
111 /W

115 /W
111 /W

115 /W



Description

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  dimming function with an analog voltage or low  frequency Pulse Width Modulation (PWM) control.  
 
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.  
 
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 of OZ965 are approximately sinusoidal. This sinusoid results in very little harmonic emi/rfi emissions.
 
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.
 
Its high driving capability allows the OZ965 to drive high power MOSFETs.
 
The single stage design of OZ965 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 available in 16-pin SOP and TSSOP packages. It is specified over the  commercial temperature range of 0 to +70,  and the industrial temperature range of -40to  +85.




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