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Si8250/1/2
D I G I TA L P O W E R C O N T R O L L E R
Features
Single-chip, Flash-based digital
power controller
Supports isolated and non-isolated
applications
Enables new system capabilities
such as:
- Adaptive dead-time control for
In-system Flash programmable
Flash can also be used as NV
memory for data storage
Low-cost, comprehensive
development tool kit includes:
Graphical, easy-to-use system
design tools
Pin Assignments:
See page 23
32-pin LQFP
higher efficiency
- Nonlinear control for faster
Integrated development
environment
RST/C2CK
IPK
VSENSE
1
2
3
24
23
22
P0.0
P0.1
P0.2
transient response
- Self diagnostics for higher
reliability
- SMBus port
Highly-integrated control solution:
High-speed digital hardware
control loop
In-system programmable
supervisory processor
Programmable system protection
functions
Hardware cycle-by-cycle current
limiting and OCP
External clock and frame
synchronization inputs
Performs system management
In-system, on-line debugger
Turnkey isolated 35 W digital
half-bridge target board
Typical Applications
Isolated and non-isolated DC/DC
converters
AC/DC converters
Fully Pb-free and ROHS compliant
packages
32-pin LQFP
28-pin 5x5 mm QFN
Temp Range: –40 to +125 °C
GNDA 4
VDDA 5
VREF 6
P1.0/VIN/AIN0 7
P1.1/AIN1 8
GND
RST / C2CK
IPK
VSENSE
GND
VDD
VREF
P1.0/VIN/AIN0
1
2
3
4
5
6
7
Si8250/1/2
Top View
28-pin QFN
Si8250/1/2
Top View
GND
21
20
19
18
17
21
20
19
18
17
16
15
P0.3 / XCLK
P0.4
P0.5
P0.6
P0.7
P0.1
P0.2
P0.3/XCLK
P0.4
P0.5
P0.6
P0.7
functions, such as external power
supply sequencing and fan
control/monitoring
Description
The Si8250/1/2 provides all control and protection functions necessary to
Patents pending
implement highly-intelligent, fast-response
power delivery and
management control systems for isolated and non-isolated power
supplies. Onboard processing capability enables intelligent control
optimization for improved system performance and new capabilities, such
as serial connectivity via the SMBus or onboard UART. The Si8250/1/2
family is in-system Flash programmable, enabling control and protection
parameters, such as system regulation and protection settings, startup
and shutdown modes, loop response, and modulation timing, to be readily
modified. The built-in, high-speed control path provides loop updates
every 100 ns and provides pulse-by-pulse current limiting and overcurrent
protection, even while the internal CPU is disabled.
The Si825x family is supported by the Si8250DK development kit, which
contains everything required to develop and program power supply
applications with the Si825x family of digital controllers.
Rev. 1.0 6/07
Copyright ? 2007 by Silicon Laboratories
Si8250/1/2
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相关代理商/技术参数
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SI8250-IMR 制造商:Silicon Laboratories Inc 功能描述:VOLT SUPERVISOR PWR SUPPLY 0.05V TO 0.8V 28QFN - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC DIGITAL PWR CONTROLLER 32LQFP 制造商:Silicon Laboratories Inc 功能描述:32K 28 Pin SMPS Controller
SI8250-IQ 功能描述:电压监测器/监控器 SMPS Controller RoHS:否 制造商:Texas Instruments 监测电压数:2 监测电压:Adjustable 输出类型:Open Drain 欠电压阈值: 过电压阈值: 准确性:1 % 工作电源电压:1.5 V to 6.5 V 工作电源电流:1.8 uA 最大工作温度:+ 125 C 封装 / 箱体:SON-6 安装风格:SMD/SMT
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SI8251-IM 功能描述:功率驱动器IC SMPS Controller RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
SI8251-IMR 制造商:Silicon Laboratories Inc 功能描述:VOLT SUPERVISOR PWR SUPPLY 0.05V TO 0.8V 28QFN - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC DIGITAL PWR CONTROLLER 32LQFP 制造商:Silicon Laboratories Inc 功能描述:16K 28 Pin SMPS Controller
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