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UCC2892
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所属类别：ACDC-和-DCDC-电源
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产品名称：UCC289x 电流模式有源钳位 PWM 控制器
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厂商：TI
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生产批号：11+
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封装：16SOIC, 16TSSOP
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库存状态：有库存
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库存量：84000
- 最低订购量：1
- 详细资料：
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The PWM controllers UCC2891/2/3/4 series are designed to simplify the implementation of a wide range of active clamping/reset switching power supply topologies.
The UCC289x is a peak current mode, fixed frequency, high-performance pulse width modulator. It includes logic and the ability to drive a critical delay auxiliary switch for a simple way to operate with the correct programming active clamping.
The initial start-up includes a 110-V start-up regulator at UCC2891/3 and provides keep-alive power on standby.
Other features include an internal programmable slope compensation circuit, precise D-maximum limit, and a resistor-programmable synchronized oscillator. The conversion function of the accurate online monitoring scheme is also on\x92s and OFF conversion about the large capacity input voltage.
characteristic
- Low output jitter
- Soft stop shutdown primary and auxiliary
- Active clamping/reset forward, ideal for flyback converters
- Supplemental auxiliary drivers are available with programmable dead time (on-delay) between the AUX and the main switch
- The peak current mode controls the periodic current limit
- 110-V input starts the regulator pair UCC2891/3
- TrueDrive™2 sinks, 2 A source outputs
- Accurate line UV and OV threshold lines
- Programmable slope compensation
- 1.0 - MHz synchronized oscillator
- Precisely programmable maximum duty cycle
- Programmable soft start
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apply
- 150 watt to 700 watt switching power supply
- High efficiency, low EMI/RFI off-line or DC/DC converter
- Server, 48 V telecommunications, data communications
- High power converter, LCD TV and plasma TV
parameter
| |
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UCC2892 |
|
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| topology |
|
Reverse, positive |
|
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| Control method |
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Current mode |
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| Frequency (max) (kHz) |
|
1000 |
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| On/off of undervoltage lockout threshold (5) |
|
13.0/8.0 |
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| Pin/Pack |
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16SOIC，16TSSOP |
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| (#) Regulated output |
|
One |
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| Operating Temperature Range (°C) |
|
-40 to 105, -40 to 85 |
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