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參數資料
| 型號： | TPS55383PWPRG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 7 A DUAL SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | PLASTIC, HTSSOP-26 |
| 文件頁數： | 28/45頁 |
| 文件大小： | 1318K |
| 代理商： | TPS55383PWPRG4 |
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頁當前第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁
(
)
(
)
(
)
(
)
(
)
(
)
4
3
4
IN
m
1
6
3
6
IN
LOAD1
V
F
2
10
13.2
5.82
10
2
10
fc
4.63
V
Fm
50
10
13.2
5.82
10
50
10
1
R
1.67
-
=
÷
÷
+
÷
÷
W
è
è
(47)
1
EA1
CO
LOAD1
OUT1
fc
4.65
K
20
log
20
log
5.80 dB
1
2
f
R
C
1
2
35 kHz
1.67
22 F
= -
= -
=
÷
÷
+
p
+
p
W
m
è
è
(48)
(
)
(
)
EA
K
5.80 dB
20
LOWER
UPPER
COMP1
M
LOWER
10
Z
10
3.83 k
20.5 k
R
38.5 k
R15
38.3 k
g
Z
315 S
3.83 k
+
W +
W
=
W
=
W
m
W
(49)
ZERO1
OUT1
LOAD1
1
f
4.4 kHz
2
C
R
2
22 F 1.67
=
p
p
m
W
(50)
COMP1
POLE1
COMP1
1
C
967 pF
C21
1nF
2
f
R
2
4.4 kHz
3.83 k
=
=
p
p
W
(51)
HF1
CO
COMP
1
C
29.6 pF
C23
33 pF
2
4
f
R
2
4
35 kHz
38.3 k
=
=
p
p
W
(52)
SLUS818 – SEPTEMBER 2008 ......................................................................................................................................................................................... www.ti.com
Then calculate the converter gain at DC:
Calculate the required error amplifier gain at the desired crossover frequency of 35 kHz:
Then compensation resistor at the output of the error amplifier is:
Calculate the required compensation zero frequency:
Then calculate the compensation capacitor:
The high-frequency pole is placed at eight times the crossover frequency:
Boot-Strap Capacitor
To ensure proper charging of the high-side FET gate and limit the ripple voltage on the boost capacitor, a 47-nF
boot strap capacitor is used.
ILIM2
The current limit must be set above the peak inductor current ILpeak. Comparing ILpeak to the available minimum
current limits, ILIM is connected to BP for a 3.6-A minimum current limit.
SEQ
The SEQ pin is left floating, leaving the enable pins to function independently. If the enable pins are tied
together, the two supplies start-up ratio-metrically. SEQ could also be connected to BP or GND to provide
sequential start-up.
34
Copyright 2008, Texas Instruments Incorporated
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS55386EVM-363 | 功能描述:電源管理IC開發工具 TPS55386EVM-363 Eval Mod RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS55386PWP | 功能描述:直流/直流開關調節器 3A Dual Non-Synch Buck 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 |
| TPS55386PWPG4 | 功能描述:直流/直流開關調節器 3A,Dual Non-Synch Buck 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 |
| TPS55386PWPR | 功能描述:直流/直流開關調節器 3A Dual Non-Synch Buck 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 |
| TPS55386PWPRG4 | 功能描述:直流/直流開關調節器 3A,Dual Non-Synch Buck 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 |
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