- 您現在的位置：買賣IC網 > PDF目錄98282 > TPS5430MDDAREPG4 (TEXAS INSTRUMENTS INC) 8.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 PDF資料下載
參數資料
| 型號： | TPS5430MDDAREPG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 8.5 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | GREEN, PLASTIC, SOP-8 |
| 文件頁數： | 10/28頁 |
| 文件大?。?/td> | 846K |
| 代理商： | TPS5430MDDAREPG4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
Fp1=500000 ×
VO
FLC
(15)
Fz1=0.7
F
LC
×
(16)
Fz2=2.5xF
LC
(17)
C7=
1
2
Fp1
(R1||R2)
π
×
(18)
R3=
1
2
×Fz1×C7
π
(19)
C6=
1
2
×Fz2×R1
π
(20)
ADVANCED INFORMATION
Output Voltage Limitations
V
OUTMAX + 0.87
V
INMIN * IOMAX
0.230 ) VD * IOMAX
R
L * VD
(21)
SLVS911 – MARCH 2009................................................................................................................................................................................................... www.ti.com
The network composed of R1, R2, R3, C5, C6, and C7 has two poles and two zeros that are used to tailor the
overall response of the feedback network to accommodate the use of the ceramic output capacitors. The pole
and zero locations are given by the following equations:
The final pole is located at a frequency too high to be of concern. The second zero, Fz2 as defined by
Equation 17 uses 2.5 for the frequency multiplier. In some cases this may need to be slightly higher or lower.
Values in the range of 2.3 to 2.7 work well. The values for R1 and R2 are fixed by the 3.3-V output voltage as
calculated using Equation 12. For this design R1 = 10 k
and R2 = 5.90 k. With Fp1 = 401 Hz, Fz1 = 2876 Hz,
and Fz2 = 10.3 kHz, the values of R3, C6, and C7 are determined using Equation 18, Equation 19, and
For this design, using the closest standard values, C7 is 0.1
F, R3 is 549 , and C6 is 1500 pF. C4 is added to
improve load regulation performance. It is effectively in parallel with C6 in the location of the second pole
frequency, so it should be small in relationship to C6. C4 should be less the 1/10 the value of C6. For this
example, 150 pF works well.
For additional information on external compensation of the TPS5430 or other wide-voltage-range SWIFT devices,
see Using TPS5410/20/30/31 With Aluminum/Ceramic Output Capacitors (literature number SLVA237).
Due to the internal design of the TPS5430, there are both upper and lower output voltage limits for any given
input voltage. The upper limit of the output voltage set point is constrained by the maximum duty cycle of 87%
and is given by:
Where
VINMIN is the minimum input voltage.
IOMAX is the maximum load current.
VD is the catch diode forward voltage.
RL is the output inductor series resistance.
This equation assumes maximum on resistance for the internal high-side FET.
18
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS5430-EP
相關PDF資料 |
PDF描述 |
|---|---|
| TPS54310MPWPREP | 6 A SWITCHING REGULATOR, 775 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS54310PWPRG4 | 6 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20 |
| TPS54320RHLR | SWITCHING REGULATOR, 1320 kHz SWITCHING FREQ-MAX, PQCC14 |
| TPS54320RHL | SWITCHING REGULATOR, PQCC14 |
| TPS54327DDAR | 5.7 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO8 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS5430-Q1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-A WIDE-INPUT-RANGE STEP-DOWN SWIFT CONVERTER |
| TPS5430QDDARQ1 | 功能描述:直流/直流開關調節器 3A Wide-Input-Range 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 |
| TPS5431 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.6 MHz, 3-V TO 6-V INPUT, 3-A SYNCHRONOUS STEP-DOWN SWIFT⑩ CONVERTER WITH DISABLED SINKING DURING START-UP |
| TPS54310 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V TO 6-V INPUT, 3-A OUTPUT SYNCHRONOUS-BUCK PWM SWITCHER WITH INTEGRATED FETs |
| TPS54310-EP | 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V TO 6-V INPUT, 3-A OUTPUT,SYNCHRONOUS BUCK PWM SWITCHER WITH INTEGRATED FETs(SWIFT?) |
發布緊急采購，3分鐘左右您將得到回復。