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参数资料
| 型号： | KIT34712EPEVBE |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL BOARD 3A 1MHZ |
| 标准包装： | 1 |
| 系列： | * |
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
occurred by releasing the drive on the PG pin high,
allowing the signal/pin to be pulled high by the external
pull-up resistor.
TRACKING AND SEQUENCING
This block allows the output of the 34712 to track 1/2 the
voltage applied at the VREFIN pin. This allows the V REF and
V TT voltages to track 1/2 V DDQ and assures that none of them
will be higher than V DDQ at any point during normal operating
conditions. For power down during a shutdown (S5) mode,
the 34712 uses internal discharge MOSFETs (M5 and M6 on
Figure 2 ) to discharge V TT and V REF respectively. These
discharge MOSFETs are only active during shutdown mode.
Using this block along with controlling the SD and STBY pins
can offer the user power sequencing capabilities by
controlling when to turn the 34712 outputs on or off.
BUCK CONVERTER
This block provides the main function of the 34712: DC to
regulated output voltage used by the loads for reliable
operation. The buck converter is a high performance, fixed
frequency (externally adjustable), synchronous buck PWM
voltage-mode control. It drives integrated 50 m ?? N-channel
power MOSFETs saving board space and enhancing
efficiency. The switching regulator output voltage is
adjustable with an accuracy of less than ±2.0% to meet DDR
requirements. Its output has the ability to track 1/2 the voltage
applied at the VREFIN pin. The regulator's voltage control
loop is compensated using a type III compensation network,
with external components to allow for optimizing the loop
compensation, for a wide range of operating conditions. A
typical Bootstrap circuit with an internal PMOS switch is used
to provide the voltage necessary to properly enhance the
high-side MOSFET gate.
The 34712 is designed to address DDR memory power
supplies. The integrated converter has the ability to both sink
and source up to 3.0 A of continuous current, making it
suitable for bus termination power supplies.
DC conversion from an un-regulated input voltage to a
34712
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
13
相关PDF资料 |
PDF描述 |
|---|---|
| KIT34713EPEVBE | KIT EVAL BOARD 5A 1MHZ |
| 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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KIT34713EPEVBE | 功能描述:电源管理IC开发工具 5.0 A 1.0 MHZ 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 |
| 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 |
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