- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄69512 > TPS54550PWPRG4 (TEXAS INSTRUMENTS INC) 9.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16 PDF資料下載
參數(shù)資料
| 型號(hào)： | TPS54550PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 9.5 A SWITCHING REGULATOR, 700 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | GREEN, PLASTIC, HTSSOP-16 |
| 文件頁(yè)數(shù)： | 4/31頁(yè) |
| 文件大小： | 913K |
| 代理商： | TPS54550PWPRG4 |
第1頁(yè)第2頁(yè)第3頁(yè)當(dāng)前第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)
www.ti.com
Overcurrent Protection
Output Voltage Limitations
T
HICCUP(ms) +
2250
s(kHz)
(6)
Setting the Output Voltage
R2 +
R1
0.891
V
O * 0.891
(7)
SLVS623A – MARCH 2006 – REVISED APRIL 2006
OUTPUT VOLTAGE (V)
R2 VALUE (k
)
1.2
28.7
Overcurrent protection is implemented by sensing
1.5
14.7
the drain-to-source voltage across the high-side
1.8
9.76
MOSFET and compared to a voltage level which
represents the overcurrent threshold limit. If the
2.5
5.49
drain-to-source voltage exceeds the overcurrent
3.3
3.74
threshold limit for more than 100 ns, the high-side
MOSFET is disable, the SSENA pin is pulled low,
and the internal digital slow-start is reset to 0 V.
SSENA is held low for approximately the time that is
Due to the internal design of the TPS54550 there are
calculated by Equation 6:
both upper and lower output voltage limits for any
given input voltage. Additionally, the lower boundary
of the output voltage set point range also depends
on operating frequency. The upper limit of the output
voltage set point is constrained by the maximum duty
Once the hiccup time is complete, the SSENA pin is
cycle of the device and is shown in Figure 12. The
released and the converter initiates the internal
lower
limit
is
constrained
by
the
minimum
slow-start.
controllable on time, which may be as high as 220
ns. The approximate minimum output voltage for a
given
input
voltage
and
range
of
operating
The output voltage of the TPS54550 can be set by
frequencies is shown in Figure 8, while the maximum
feeding back a portion of the output to the VSENSE
operating frequency versus input voltage for some
pin using a resistor divider network. In the application
common output voltages is shown in Figure 10.
circuit of Figure 29, this divider network is comprised
The curves shown in these two figures are valid for
of resistors R1 and R2. To calculate the resistor
output currents greater than 0.5 A. As output
values to generate the required output voltage use
currents decrease towards no load (0 A), the
the following equation:
minimum output voltage decreases. For applications
where the load current is less than 100 mA, the
applicable. All of the data plotted in these curves are
Start with a fixed value of R1 and calculate the
approximate and take into account a possible 20%
required R2 value. Assuming a fixed value of 10 k
deviation in actual operating frequency relative to the
for R1, the following table gives the appropriate R2
intended set point.
value for several common output voltages:
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS54610PWPR | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54610PWPRG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54613PWPRG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54613PWPR | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
| TPS54613PWPG4 | 12 A SWITCHING REGULATOR, 762 kHz SWITCHING FREQ-MAX, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS54560 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5 V to 60 V Input, 5 A, Step Down DC-DC Converter with Eco-modea?￠ |
| TPS54560_13 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:4.5 V to 60 V Input, 5 A, Step Down DC-DC Converter with Eco-modea?￠ |
| TPS54560BQDDAQ1 | 功能描述:4.5V TO 60V INPUT, 5A, STEP-DOWN 制造商:texas instruments 系列:汽車級(jí)，AEC-Q100，Eco-Mode? 包裝:管件 零件狀態(tài):在售 功能:降壓 輸出配置:正 拓?fù)?降壓，分壓軌 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:60V 電壓 - 輸出（最小值/固定）:0.8V 電壓 - 輸出（最大值）:58.8V 電流 - 輸出:5A 頻率 - 開(kāi)關(guān):100kHz ~ 2.5MHz 同步整流器:無(wú) 工作溫度:-40°C ~ 150°C（TJ） 安裝類型:表面貼裝 封裝/外殼:8-PowerSOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SO PowerPad 標(biāo)準(zhǔn)包裝:75 |
| TPS54560BQDDARQ1 | 功能描述:IC REG BUCK SPLT ADJ 5A 8PWRSOIC 制造商:texas instruments 系列:汽車級(jí)，AEC-Q100，Eco-Mode? 包裝:剪切帶（CT） 零件狀態(tài):在售 功能:降壓 輸出配置:正 拓?fù)?降壓，分壓軌 輸出類型:可調(diào)式 輸出數(shù):1 電壓 - 輸入（最小值）:4.5V 電壓 - 輸入（最大值）:60V 電壓 - 輸出（最小值/固定）:0.8V 電壓 - 輸出（最大值）:58.8V 電流 - 輸出:5A 頻率 - 開(kāi)關(guān):100kHz ~ 2.5MHz 同步整流器:無(wú) 工作溫度:-40°C ~ 150°C（TJ） 安裝類型:表面貼裝 封裝/外殼:8-PowerSOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SO PowerPad 標(biāo)準(zhǔn)包裝:1 |
| TPS54560DDA | 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 60V Input 5 A SD DC-DC Cnvtr RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。