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| 型号： | TPS40130RHBRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封装： | GREEN, PLASTIC, QFN-32 |
| 文件页数： | 22/38页 |
| 文件大小： | 950K |
| 代理商： | TPS40130RHBRG4 |
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t Time 4 ms/div
VSS (1 V/ div)
VFB
(200 mV / div)
IL2, IL2
(10 A / div)
VSS (1 V/div)
VFB
(200 mV/ div)
VFB = 0.588 V
t Time 40
s/div
IL2, IL2
(10 A / div)
LAYOUT CONSIDERATIONS
Introduction
Two Ground Planes
Low-Level Signal Connections and Routing
Current Sense Signals
SLUS602B – JUNE 2004 – REVISED SEPTEMBER 2005
TYPICAL CHARACTERISTRICS (continued)
Figure 27. Overcurrent, Hiccup Mode
Figure 28. Overcurrent
Any pin number references are for the DBT, TSSOP package. There are two general classes of signals to
consider for proper layout, high-current switching and low-level analog. Refer to Figure 13 for references to
components. A printed wiring board (PWB) with a minimum of four layers should be used.
A basic requirement is two separate ground planes that ultimately get connected together at a point where no
switching currents are present, the power ground (PGND) and the analog ground (AGND). They should be
implemented as split planes on the top and bottom layers. The PGND is used for all high-current signals
including LDRV1, LDRV2, lower MOSFETs and input and output decoupling capacitors. PGND should be used
on the top layer around the high current components and on the bottom layer as a minimum. The AGND is used
for low level signals such as: soft-start, RT, VREF, FB, BP5 decoupling to AGND. AGND should be used on the
top layer around the device and low level components and on the bottom layer as a minimum. The signals which
connect to the two different ground planes are shown in Figure 13 using different symbols for each ground.
Using inductor current sense has advantages over using a low-value, high-power current-sense resistor, but
attention must be paid to how the current sense signals are generated and routed.
Connection
Resistor R2 and capacitor C5 generate the current sense signal for phase 1 and resister R1 and capacitor C4
generate the current sense signal for phase 2. The R2-C5 and R1-C4 components must be connected directly to
the pads for L1 and L2, respectively.
29
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| TPS40130RHBT | 功能描述:DC/DC 开关控制器 2-Ch Multiphase Buck DC/DC w/Int Drvr 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 |
| TPS40130RHBTG4 | 功能描述:DC/DC 开关控制器 2-Ch Multiphase Buck DC/DC w/Int Drvr 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 |
| TPS40131 | 制造商:TI 制造商全称:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS |
| TPS40131EVM | 功能描述:电源管理IC开发工具 TPS40131 Eval Mod 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 |
| TPS40131RHBR | 功能描述:DC/DC 开关控制器 2-Ph Synch Buck Cntr 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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