产品概述
描述
The SRK2001A controller implements a control scheme specific for secondary side synchronous rectification in LLC resonant converters that use a transformer with center tap secondary winding for full wave rectification.
It provides two high current gate drive outputs, each capable of directly driving N-channel power MOSFET. Each gate driver is controlled separately, and an interlock logic circuit prevents the two synchronous rectifier MOSFET from conducting simultaneously.
The driver high-level voltage is clamped to 11 V in order to avoid delivering excessive gate charge to the SR MOSFET when the device is supplied at higher VCC voltages.
The control scheme ensures that each synchronous rectifier is switched ON as the corresponding half-winding starts conducting and OFF as its current falls to zero.
The turn-on logic with adaptive masking time (up to 10% of clock cycle) and innovative adaptive turn-off logic allow maximizing the conduction time of the SR MOSFET, eliminating the need for a parasitic inductance compensation circuit.
The low consumption mode of the device allows meeting the most stringent requirement for converter power consumption in light-load and no-load conditions.
A very low external component count required when using this device.
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所有功能
- Secondary side synchronous rectification controller optimized for LLC resonant converter
- Dual gate driver for N-channel MOSFETs
- Adaptive turn-off logic
- Turn-on logic with adaptive masking time
- Auto-compensation of parasitic inductance
- Low consumption mode: 50 μA quiescent current
- VCC operating voltage range 4.5 V to 32 V
- High voltage drain-to-source Kelvin sensing for each SR MOSFET
- Operating frequency up to 500 kHz
- Programmable exit load levels from burst- mode
- SSOP10 package
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EDA符号、封装和3D模型
意法半导体 - SRK2001A
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符号
封装
3D模型
质量与可靠性
| 产品型号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|
| SRK2001A | 批量生产 | SSOP 10 | 工业 | Ecopack2 | - | - | |
| SRK2001ATR | 批量生产 | SSOP 10 | 工业 | Ecopack2 | - | - |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
样片和购买
| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SRK2001ATR | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ||||||||||
| SRK2001A | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
SRK2001ATR 批量生产
SRK2001A 批量生产