參數(shù)資料
型號： TPS5430DDA
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
封裝： GREEN, PLASTIC, SOP-8
文件頁數(shù)： 7/28頁
文件大?。?/td> 810K
代理商： TPS5430DDA
www.ti.com
+
10-35V
VIN
C1
4.7 F
m
C4
4.7 F
m
ENA
VIN
ENA
NC
GND
PwPd
BOOT
PH
VSNS
U1
TPS5430DDA
C2
0.01 F
m
L1
22 H
m
D1
B340A
C3
220 F
m
R2
3.24kW
5V
VOUT
R1
10kW
C3=SanyoPOSCAP 10TP220M
+
9-21V
VIN
C1
ENA
VIN
ENA
NC
GND
PwPd
BOOT
PH
VSNS
U1
TPS5431DDA
C2
0.01 F
m
L1
18 H
m
D1
B340A
C3
220 F
m
R2
3.24kW
5V
VOUT
R1
10kW
C3=SanyoPOSCAP 10TP220M
SLVS632C – JANUARY 2006 – REVISED NOVEMBER 2006
Catch Diode
The TPS5430 is designed to operate using an external catch diode between PH and GND. The selected diode
must meet the absolute maximum ratings for the application: Reverse voltage must be higher than the maximum
voltage at the PH pin, which is VINMAX + 0.5 V. Peak current must be greater than IOUTMAX plus on half the
peak to peak inductor current. Forward voltage drop should be small for higher efficiencies. It is important to
note that the catch diode conduction time is typically longer than the high-side FET on time, so attention paid to
diode parameters can make a marked improvement in overall efficiency. Additionally, check that the device
chosen is capable of dissipating the power losses. For this design, a Diodes, Inc. B340A is chosen, with a
reverse voltage of 40 V, forward current of 3 A, and a forward voltage drop of 0.5 V.
Additional Circuits
Figure 12 and Figure 13 show application circuits using wide input voltage ranges. The design parameters are
similar to those given for the design example, with a larger value output inductor and a lower closed loop
crossover frequency.
Figure 12. 10–35 V Input to 5 V Output Application Circuit
Figure 13. 9–21 V Input to 5 V Output Application Circuit
Circuit Using Ceramic Output Filter Capacitors
Figure 14 shows an application circuit using all ceramic capacitors for the input and output filters which
generates a 3.3-V output from a 10-V to 24-V input. The design procedure is similar to those given for the
design example, except for the selection of the output filter capacitor values and the design of the additional
compensation components required to stabilize the circuit.
15
相關PDF資料
PDF描述
TPS5431DDARG4 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
TPS5431DDA 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
TPS5431DDAR 6 A SWITCHING REGULATOR, 600 kHz SWITCHING FREQ-MAX, PDSO8
TPS54311PWPRG4 6 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20
TPS54316PWP 6 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO20
相關代理商/技術參數(shù)
參數(shù)描述
TPS5430DDA 制造商:Texas Instruments 功能描述:IC DC/DC CONV BUCK ADJ 3A 8SOIC
TPS5430DDAG4 功能描述:直流/直流開關調(diào)節(jié)器 5.5 to 36V Input 3A Step Dwn 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(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS5430DDAR 功能描述:直流/直流開關調(diào)節(jié)器 5.5 to 36V Input 3A Step Dwn 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(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS5430DDARG4 功能描述:直流/直流開關調(diào)節(jié)器 5.5 to 36V Input 3A Step Dwn 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(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS5430DDARG4 制造商:Texas Instruments 功能描述:DC/DC Converter IC
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