SI9122集成电路(IC)PMIC-稳压器-DCDC开关式控制器规格书PDF中文资料
厂商型号 |
SI9122 |
参数属性 | SI9122 封装/外壳为PowerPAK® MLP65-20;包装为卷带(TR);类别为集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器;产品描述:IC REG CTRLR HALF-BRG MLP65-20 |
功能描述 | 升压/降压 |
文件大小 |
322.31 Kbytes |
页面数量 |
20 页 |
生产厂商 | Vishay Siliconix |
企业简称 |
Vishay【威世科技】 |
中文名称 | 威世科技官网 |
原厂标识 | |
数据手册 | |
更新时间 | 2024-5-24 14:03:00 |
SI9122规格书详情
FEATURES
• 12 V to 72 V input voltage range
• Integrated half-bridge primary drivers
(1 A drive capability)
• Secondary synchronous signals with
programmable deadtime delay
• Voltage mode control
• Voltage feedforward compensation
• High voltage pre-regulator operates during start-up
• Current sensing on low-side primary device
• Frequency foldback eliminates constant current tail
• Advanced maximum current control during start-up and
shorted load
• Low input voltage detection
• Programmable soft-start function
• Over temperature protections
APPLICATIONS
• Network cards
• Power supply modules
DESCRIPTION
Si9122 is a dedicated half-bridge IC ideally suited to fixed
telecom applications where efficiency is required at low
output voltages (e.g. < 3.3 V). Designed to operate within the
fixed telecom voltage range of 33 to 72 V, the IC is capable
of controlling and driving both the low and high-side
switching devices of a half bridge circuit and also controlling
the switching devices on the secondary side of the bridge.
Due to the very low on-resistance of the secondary
MOSFETs, a significant increase in the efficiency can be
achieved as compared with conventional Schottky diodes.
Control of the secondary devices is by means of a pulse
transformer and a pair of inverters. Such a system has
efficiencies well in excess of 90 even for low output
voltages. On-chip control of the dead time delays between
the primary and secondary synchronous signals keep
efficiencies high and prevent accidental destruction of the
power transformer. An external resistor sets the switching
frequency from 200 kHz to 625 kHz.
Si9122 has advanced current monitoring and control
circuitry which allow the user to set the maximum current in
the primary circuit. Such a feature acts as protection against
output shorting and also provides constant current into large
capacitive loads during start-up or when paralleling power
supplies. Current sensing is by means of a sense resistor on
the low-side primary device.
SI9122属于集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器。威世科技制造生产的SI9122DC-DC 开关控制器PMIC(电源管理集成电路)DC 到 DC 开关式控制器是用于高效率电路的稳压 IC,其配置为生成高于(突升或步升)或低于(突降或步降)输入电源的输出电源电压。其他拓扑结构可能包括:降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。
产品属性
- 产品编号:
SI9122ADLP-T1-E3
- 制造商:
Vishay Siliconix
- 类别:
集成电路(IC) > PMIC - 稳压器 - DC DC 开关式控制器
- 包装:
卷带(TR)
- 输出类型:
晶体管驱动器
- 功能:
升压/降压
- 输出配置:
正,可提供隔离
- 拓扑:
半桥
- 输出阶段:
1
- 电压 - 供电 (Vcc/Vdd):
10.5V ~ 13.2V
- 频率 - 开关:
500kHz
- 占空比(最大):
92%
- 同步整流器:
是
- 时钟同步:
无
- 控制特性:
限流,定序,软启动
- 工作温度:
-40°C ~ 85°C(TA)
- 安装类型:
表面贴装型
- 封装/外壳:
PowerPAK® MLP65-20
- 供应商器件封装:
PowerPAK® MLP65-20
- 描述:
IC REG CTRLR HALF-BRG MLP65-20
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
VishaySiliconix |
23+ |
20-TSSOP |
66800 |
进口原装一级分销 |
询价 | ||
只做原装 |
21+ |
QFN20 |
36520 |
一级代理/放心采购 |
询价 | ||
VISHAY |
21+ |
SSOP20 |
19960 |
询价 | |||
FAIRCHILD/仙童 |
2122+ |
SOT23-6 |
16200 |
全新原装正品现货,优势渠道可含税,假一赔十 |
询价 | ||
VISHAY |
11+ |
TSSOP20 |
1930 |
全新原装,支持实单,假一罚十,德创芯微 |
询价 | ||
VISHAY |
2020+ |
TSSOP-2 |
403 |
百分百原装正品 真实公司现货库存 本公司只做原装 可 |
询价 | ||
VISHAY |
TSSOP-20 |
39089 |
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 | |||
Vishay(威世) |
23+ |
NA/ |
8735 |
原厂直销,现货供应,账期支持! |
询价 | ||
VISHAY/威世 |
2048+ |
TSSOP-20 |
9852 |
只做原装正品现货!或订货假一赔十! |
询价 | ||
VISHAY/威世 |
22+ |
SSOP20 |
42500 |
郑重承诺只做原装进口现货 |
询价 |