參數(shù)資料
型號: SI8250-IM
廠商: SILICON LABORATORIES
元件分類: 微控制器/微處理器
英文描述: DIGITAL POWER CONTROLLER
中文描述: SPECIALTY MICROPROCESSOR CIRCUIT, QCC28
封裝: 5 X 5 MM, ROHS COMPLIANT, QFN-28
文件頁數(shù): 15/30頁
文件大?。?/td> 932K
代理商: SI8250-IM
Si8250/1/2
Preliminary Rev. 0.8
15
3. Product Description
Figure 1. Functional Block Diagram
Figure 2. Si8250 Top-Level Block Diagram
Si8250/1/2
System Management Processor
I/O (8)
I/O (8)
5
1280 Byte
RAM
16/32 kB
Flash
P
8
M
TEMP
SENSOR
P
HARDWARE
DEBUG
RESET
CONTROL
2% 25 Mhz OSC,
and LFO
INTERRUPT
CONTROL
4x 16-BIT
TIMERS
SMBus
3 CH PCA
I/O PORT
LATCHES
ADC
REGISTERS
& LIMIT
DETECTORS
12-BIT
200 Ksps
ADC
UART
AUTO
SCAN
LOGIC
VSENSE
DEBUG
PORT
VDD
SYSCLKIN
Control Processor
IPK
VSENSE
VREF
GATE CONTROL
(6)
MULTIPHASE
DPWM
Pulse-by-Pulse
Current Limiter
and OCP
ICYC
u(n)
10 MHz
ADC
REFDAC
VREF
DSP
FILTER ENGINE
VSENSE
OCP
POWER STAGES
Si8250
System Management Processor
P
I
TEMP
SENSOR
P
50MIPS 8051 CPU
and Memory
Digital Peripherals:
- UART
- SMBus Port
- 4 x 16-Bit Timers
- 3 Ch PCA (PWM)
- I/O Port Latches
VSENSE
DEBUG
PORT
VDD
SYSCLKIN
Control Processor
IPK
VSENSE
VREF
MULTIPHASE
DPWM
Pulse-by-Pulse
Current Limiter
and OCP
ICYC
u(n)
ADC1
10Msps
REFDAC
VREF
DSP
FILTER ENGINE
VSENSE
OCP
ADC 0
12-Bit, 200Ksps
10-Channel
Up to 6 Gate
Control Outputs
GATE
DRIVERS
16 General-Purpose
Analog/Digital I/O Lines
SUPPLY INPUT
VOLTAGE
OUTPUT
FILTER
SWITCHES
AND
MAGNETICS
Analog Input (e.g. average current)
Digital Ouput (e.g. fan speed control)
VOUT
Peak Current Signal (e.g. CT)
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