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參數資料
型號: TPS62320YZD
廠商: Texas Instruments, Inc.
英文描述: 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
中文描述: 500毫安,3 MHz的同步降壓轉換器芯片級封裝
文件頁數: 20/31頁
文件大?。?/td> 1635K
代理商: TPS62320YZD
www.ti.com
LAYOUT CONSIDERATIONS
As for all switching power supplies, the layout is an important step in the design. High-speed operation of the
TPS6230x, TPS6231x, and TPS6232x devices demand careful attention to PCB layout. Care must be taken in
board layout to get the specified performance. If the layout is not carefully done, the regulator could show poor
line and/or load regulation, stability issues as well as EMI problems. It is critical to provide a low inductance,
impedance ground path. Therefore, use wide and short traces for the main current paths as indicated in bold on
Figure 34
.
AVIN
VIN
SW
TPS62300
L1
ADJ
PGND
AGND
VOUT
R1
R2
EN
MODE/SYNC
FB
1
2
3
8
7
10
6
4
5
9
V
I
C1
C2
V
O
GND
MODE / SYNC
V
O
sense signal
EN
V
I
GND
V
O
TPS62300, TPS62301, TPS62302
TPS62303, TPS62305, TPS62311
TPS62313, TPS62320, TPS62321
SLVS528B–JULY 2004–REVISED JUNE 2005
The input capacitor should be placed as close as possible to the IC pins as well as the inductor and output
capacitor. Use a common ground node for power ground and a different one for control ground (AGND) to
minimize the effects of ground noise. Connect these ground nodes together (star point) underneath the IC and
make sure that small signal components returning to the AGND pin do not share the high current path of C1 and
C2.
The output voltage sense line (VOUT) should be connected right to the output capacitor and routed away from
noisy components and traces (e.g., SW line). Its trace should be minimized and shielded by a guard-ring
connected to the reference ground. The voltage setting resistive divider should be placed as close as possible to
the AGND pin of the IC.
Figure 34. Layout Diagram
Figure 36. Suggested QFN Layout (Bottom)
Figure 35. Suggested QFN Layout (Top)
20
相關PDF資料
PDF描述
TPS62300DRC 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
TPS62300YZD 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
TPS62301DRC 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
TPS62301YZD 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
TPS62302DRC 500-mA, 3-MHz SYNCHRONOUS STEP-DOWN CONVERTER IN CHIP SCALE PACKAGING
相關代理商/技術參數
參數描述
TPS62320YZDR 功能描述:直流/直流開關調節器 Adj 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62320YZDT 功能描述:直流/直流開關調節器 Adj 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62321DRCR 功能描述:直流/直流開關調節器 1.5V 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62321DRCRG4 功能描述:直流/直流開關調節器 1.5V 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS62321YEDR 功能描述:開關變換器、穩壓器與控制器 1.5V 500-mA 3-MHz Step-Down Converter RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
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