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參數資料
| 型號： | TPS51511RHLT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 350 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QFN-20 |
| 文件頁數： | 13/29頁 |
| 文件大小： | 1019K |
| 代理商： | TPS51511RHLT |
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Layout Considerations
APPLICATION CIRCUITS
Q2
1nF
10 F
m
L
C3
14kW
30kW
18kW
NC
GND
ODOFF
OD
VLDO
VLDOFB
PGOOD
VOSW
CS
ENSW
V5IN
PGND
LL
DRVL
DRVH
C
O
M
P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
TPS51511
COMP
10 F
m
C2
1 F
m
PCIExpressI/O
+1.2V/2 A
30kW
10 F
m
ODOFF=Lo,1.2V
ODOFF=Hi,1.1V
105kW
VLDOIN
VBST
VSWFB
ENLDO
100kW
6,34kW
4.7 F
m
PGOOD
ENSW
ENLDO
+5V
C1
Q1
GPU_core
+1.1V_lowerpower
+1.2V_performance/12 A
V
=3Vto28V
IN
+1.8V_LDOIN
0.1 F
m
Symbol
L
C1
C2
C3
Q1
Q2
Specification
1 H
3X10 F
330 F
m
330 F
30V,13m
30V,5m
m
W
Manufacturer
Vishay
TDK
Sanyo
IR
Part Number
IHLP5050
C3225X5R1E106M
2R5TPE330MC
IRF7821
IRF7832
SLVS735A – FEBRUARY 2007 – REVISED APRIL 2007
APPLICATION INFORMATION (continued)
Below are some points to be considered before the layout of TPS51511 design begins.
The PCB trace defined as LL node, which connects to the source of the switching MOSFET, the drain of the
rectifying MOSFET, and the high voltage side of the inductor, should be as short and wide as possible.
Consider adding a small snubber circuit consisting of a 3-resistor and 1-nF capacitor between LL and
PGND if a high frequency surge is observed on the LL voltage waveform.
V5IN input capacitor, 1 F - 4.7 F, should be placed near the V5IN pin, within 0.1" (2,5 mm), if possible.
All sensitive analog traces such as VOSW, VSWFB,VLDOFB and CS should be placed away from
high-voltage switching nodes such as LL, DRVL or DRVH nodes to avoid coupling.
An input bypass capacitor should be placed to VLDOIN as close as possible with short and wide connection.
The output capacitor for VLDO should be placed close to the pin with short and wide connections in order to
avoid additional ESR and/or ESL of the trace.
In order to effectively remove heat from the package, prepare thermal land and solder to the package’s
thermal pad. Using a wide trace for the component-side copper, connected to this thermal land, will help heat
dissipation. Numerous vias of 0,33 mm diameter connected from the thermal land to the internal/solder-side
ground plane(s) should be used to help dissipation. Do NOT connect PGND to this thermal land underneath
the package.
Figure 27. D-CAP Mode, RDS(ON) Sensing, 1-Bit DAC for the Output Voltage Dynamic Change
20
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS51511RHLTG4 | 功能描述:DC/DC 開關控制器 Synch Switcher Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS51513 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SINGLE PHASE D-CAP+ SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED DRIVERS FOR GENERAL IC VCORE APPLICATIONS |
| TPS51513EVM-549 | 功能描述:電源管理IC開發工具 TPS51513EVM-549 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS51513EVM-549 | 制造商:Texas Instruments 功能描述:DEVELOPMENT TOOL |
| TPS51513RHB | 制造商:TI 制造商全稱:Texas Instruments 功能描述:SINGLE PHASE D-CAP+ SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED DRIVERS FOR GENERAL IC VCORE APPLICATIONS |
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