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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： | 8/28頁 |
| 文件大小： | 846K |
| 代理商： | TPS5430MDDAREPG4 |
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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
TPS5430DDA
C2
L1
D1
B340A
C3
R2
5V
VOUT
R1
C3=SanyoPOSCAP 10TP220M
SLVS911 – MARCH 2009................................................................................................................................................................................................... www.ti.com
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 VIN(MAX) + 0.5 V. Peak current must be greater than IOUT(MAX) plus one-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 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-V to 35-V Input to 5-V Output Application Circuit
Figure 13. 9-V to 21-V Input to 5-V Output Application Circuit
16
Copyright 2009, Texas Instruments Incorporated
Product Folder Link(s): TPS5430-EP
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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?) |
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