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参数资料
| 型号： | KIT34713EPEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 11/23页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL BOARD 5A 1MHZ |
| 标准包装： | 1 |
| 系列： | * |
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
enhance the gate of the high side Power MOSFET during
switching.
SHUTDOWN INPUT (SD)
If this pin is tied to the GND pin, the device will be in
Shutdown mode. If left unconnected or tied to the VIN pin, the
device will be in Normal mode. The pin has an internal pull-
up of 1.5 M Ω .
POWER GOOD OUTPUT SIGNAL (PG)
This is an active low open drain output that is used to
report the status of the device to a host. This output activates
after a successful power up sequence and stays active as
long as the device is in normal operation and is not
experiencing any faults. This output activates after a 10 ms
delay and must be pulled up by an external resistor to a
supply voltage (e.g., V IN ).
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
MC34713 - Functional Block Diagram
Internal Bias Circuits
Protection Functions
System Control and Logic
Control and
Supervisory Functions
Oscillator
Tracking and Sequencing
Buck Converter
Figure 4. 34713 Block Diagram
INTERNAL BIAS CIRCUITS
This block contains all circuits that provide the necessary
supply voltages and bias currents for the internal circuitry. It
consists of:
? Internal voltage supply regulator: This regulator
supplies the V DDI voltage that is used to drive the digital/
analog internal circuits. It is equipped with a Power-On-
Reset (POR) circuit that watches for the right regulation
levels. External filtering is needed on the VDDI pin. This
block will turn off during the shutdown mode.
? Internal bandgap reference voltage: This supplies the
reference voltage to some of the internal circuitry.
? Bias circuit: This block generates the bias currents
necessary to run all of the blocks in the IC.
SYSTEM CONTROL AND LOGIC
This block is the brain of the IC where the device
processes data and reacts to it. Based on the status of the SD
pin, the system control reacts accordingly and orders the
device into the right status. It also takes inputs from all of the
monitoring/protection circuits and initiates power up or power
down commands. It communicates with the buck converter to
manage the switching operation and protects it against any
faults.
OSCILLATOR
This block generates the clock cycles necessary to run the
IC digital blocks. It also generates the buck converter
switching frequency. The switching frequency has a default
value of 1.0 MHz and can be programmed by connecting a
resistor divider to the FREQ pin, between VDDI and GND
pins (See Figure 1 ).
PROTECTION FUNCTIONS
This block contains the following circuits:
? Over-current limit and short-circuit detection: This block
monitors the output of the buck converter for over
current conditions and short-circuit events and alerts
the system control for further command.
? Thermal limit detection: This block monitors the
temperature of the device for overheating events. If the
temperature rises above the thermal shutdown
34713
Analog Integrated Circuit Device Data
Freescale Semiconductor
11
相关PDF资料 |
PDF描述 |
|---|---|
| KIT34716EPEVBE | KIT EVAL BOARD 1MHZ DUAL SW-MODE |
| KIT34717EPEVBE | KIT EVAL BOARD 5A 1.0MHZ |
| KS-1787-MG | SHELF SLIDING KEYBOARD ASSEMBLY |
| KS-1788 | SHELF SLIDING KEYBOARD ASSEMBLY |
| KSDKSTM32-PL | KIT IAR KICKSTART STM32 CORTEXM3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KIT34716EPEVBE | 功能描述:电源管理IC开发工具 1.0 MHZ DUAL SWITCH-MODE RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT34717EPEVBE | 功能描述:电源管理IC开发工具 5.0 A 1.0MHZ FULLY INTEG RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT34727FCEVBE | 功能描述:电源管理IC开发工具 600MA HIGH EFFICIENCY LO RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| KIT34825EPEVME | 功能描述:界面开发工具 MICRO USB INTERFACE IC RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V |
| KIT34844AEPEVBE | 功能描述:LED 照明开发工具 IC, 10 CHANNEL LED BACKLIGHT RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装: |
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