参数资料
| 型号： | TPS51217DSCR |
| 厂商： | Texas Instruments |
| 文件页数： | 19/29页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 10-SON |
| 标准包装： | 1 |
| 系列： | D-CAP™ |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 368kHz |
| 占空比： | 89% |
| 电源电压： | 4.5 V ~ 6.5 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | 296-28856-6 |
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SLUS947B – JUNE 2009 – REVISED APRIL 2012
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Since the TPS51217 controls output voltage referring to voltage across V OUT capacitor, the top-side resistor of
the voltage divider should be connected to the positive node of V OUT capacitor. In a same manner both
bottom side resistor and GND pad of the device should be connected to the negative node of V OUT capacitor.
The trace from these resistors to the VFB pin should be short and thin. Place on the component side and
avoid via(s) between these resistors and the device.
Connect the overcurrent setting resistors from TRIP pin to ground and make the connections as close as
possible to the device. The trace from TRIP pin to resistor and from resistor to ground should avoid coupling
to a high-voltage switching node.
Connections from gate drivers to the respective gate of the high-side or the low-side MOSFET should be as
short as possible to reduce stray inductance. Use 0.65 mm (25 mils) or wider trace and via(s) of at least
0.5 mm (20 mils) diameter along this trace.
The PCB trace defined as switch node, which connects to source of high-side MOSFET, drain of low-side
MOSFET and high-voltage side of the inductor, should be as short and wide as possible.
LAYOUT CONSIDERATIONS TO REMOTE SENSING
VIN
TRIP
2
TPS51217
6
V5IN
1 10 m m F F
V OUT
VFB
DRVL
4
Thermal Pad
5
0.1 m F
100 W
VTT_SENSE
VSS_SENSE
GND
UDG-09067
Figure 25. Remote Sensing of Output Voltage Using the TPS51217
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Make a Kelvin connection to the load device.
Run the feedback signals as a differential pair to the device. The distance of these parallel pair should be as
short as possible.
Run the lines in a quiet layer. Isolate them from noisy signals by a voltage or ground plane.
Copyright ? 2009–2012, Texas Instruments Incorporated
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS51217DSCT | 功能描述:DC/DC 开关控制器 3-28V Input 20A Synch St Down Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51217EVM-533 | 功能描述:电源管理IC开发工具 TPS51217 Eval Module 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 |
| TPS51218 | 制造商:TI 制造商全称:Texas Instruments 功能描述:HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN CONTROLLER FOR NOTEBOOK POWER SUPPLY |
| TPS51218DSCR | 功能描述:DC/DC 开关控制器 3-28V In,20A Synch Step Down Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS51218DSCT | 功能描述:DC/DC 开关控制器 3-28V In,20A Synch Step Down Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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