首页>SRK1000_V01>规格书详情
SRK1000_V01中文资料PDF规格书
SRK1000_V01规格书详情
Features
Secondary side synchronous rectification
controller optimized for flyback converter
Suitable for QR and mixed CCM/DCM fixed
frequency operation
Wide Vcc operating voltage range 3.75 to 32 V
CC regulation operation down to 2 V output
supported
Very low quiescent current in low consumption
mode (160 μA)
High-voltage sensing input for SR MOSFET
drain-source voltage (100 V AMR)
Operating frequency up to 300 kHz
High-current gate-drive output for N-MOSFET
Fast turn-on with minimum delay time and
adaptive turn-off logic
Programmable min. TON and fixed min. TOFF (3
options: SRK1000, SRK1000A, SRK1000B)
Low consumption mode entry by primary side
burst-mode detection or by detection of SR
MOSFET conduction lower than programmed
min TON
SOT23-6L package
Applications
Battery chargers / quick chargers
Adapters
USB power delivery (profile 3)
Description
The SRK1000 is a controller intended for
secondary side synchronous rectification (SR) in
flyback converters, suitable for operation in QR
and mixed CCM/DCM fixed frequency circuits.
It provides a high-current gate-drive output,
capable of driving N-channel Power MOSFETs.
The control scheme of this IC is such that the SR
MOSFET is switched on as soon as current starts
flowing through its body diode and it is then
switched off as current approaches zero.
The fast turn-on, with minimum delay, and the
innovative adaptive turn-off logic allow
maximizing the conduction time of the SR
MOSFET and eliminating the effect of parasitic
inductance in the circuit.
The device enters low consumption mode when it
detects primary controller burst-mode operation,
or when the SR MOSFET conduction becomes
lower than the programmed minimum TON. In this
way, converter efficiency improves at light load
where synchronous rectification is no longer
beneficial.
After the converter restarts switching or the IC
detects that the current conduction in the rectifiers
has increased 20 above the min TON
programmed value, the IC exits low consumption
mode and resumes switching operation.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
ST/意法半导体 |
SOT-23-6 |
36900 |
集团化配单-有更多数量-免费送样-原包装正品现货-正规 |
询价 | |||
ST/意法半导体 |
23+ |
SOT-23-6 |
6000 |
我们只做原装正品,支持检测。 |
询价 | ||
ST/意法半导体 |
21+ |
SOT-23-6 |
6000 |
原装正品,假一赔十! |
询价 | ||
ST(意法半导体) |
20+ |
SOT-23-6 |
2231 |
向鸿优势库存,货在仓库要货提前交代,绝对的原装,我 |
询价 | ||
STMicroelectronics |
20+21+ |
MouseReel |
8880 |
十年老店,原装正品 |
询价 | ||
ST/意法半导体 |
24+ |
SOT-23-6 |
10000 |
原装公司现货 |
询价 | ||
ST/意法半导体 |
23+ |
SOT-23-6 |
12820 |
正规渠道,只有原装! |
询价 | ||
ST(意法半导体) |
23+ |
SOT236 |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
STMicroelectronics |
22+/23+ |
SOT-23-6 |
7500 |
原装进口公司现货假一赔百 |
询价 | ||
ST(意法半导体) |
23+ |
SOT-23-6 |
9990 |
原装正品,支持实单 |
询价 |