參數(shù)資料
型號： TPS55383PWPRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)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(shù)： 13/45頁
文件大?。?/td> 1318K
代理商： TPS55383PWPRG4
(
)
300000
Fm
TPS55383
5
5.6 10
t
V
ON
6
IN
OUT
19.7
e
50 10
L
=
é
ù
-
ê
ú
-
+
÷
ê
ú
÷
è
ê
ú
(6)
4
V
Fm
2
10
IN
fc
6
V
Fm
50
10
IN
1
R
LOAD
-
=
+
÷ ÷
÷ ÷
è
(7)
EA
CO
LOAD
OUT
fc
K
20
log
1
2
f
R
C
= -
÷
+
p
è
(8)
1
2
3
4
16
15
14
13
PVDD2
BOOT2
SW2
BP
PVDD1
BOOT1
SW1
GND
TPS5538x
5
6
7
12
11
10
SEQ
ILIM2
FB2
EN1
EN2
FB1
L
C
OUT
R1
Output1
R2
C2
(optional)
UDG-08042
8
9
COMP2
COMP1
R
COMP
C
COMP
C1
(optional)
Z
UPPER
Z
LOWER
L
C
OUT
C1
R1
=
(9)
SLUS818 – SEPTEMBER 2008 ......................................................................................................................................................................................... www.ti.com
The overall DC gain of the of the converter control-to-output transfer function is approximated by:
The next step is to find the desired gain of the error amplifier at the desired crossover frequency. Assuming a
single pole roll off, evaluate the following expression at the desired crossover frequency.
Figure 24. Loop Compensation Components
If operating at wide duty cycles (over 50%), a capacitor may be necessary across the upper resistor of the
voltage setting divider. (Ref Figure 24) If duty cycles are less than 50%, this capacitor may be omitted.
If a high ESR capacitor is used in the output filter, a zero appears in the loop response that could lead to
instability. To compensate, a small capacitor is placed in parallel with the lower voltage setting divider resistor
(Ref Figure 24). The value of the capacitor is determined such that a pole is placed at the same frequency as the
ESR zero. If low ESR capacitors are used, this capacitor may be omitted.
20
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS55383 TPS55386
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相關代理商/技術參數(shù)
參數(shù)描述
TPS55386EVM-363 功能描述:電源管理IC開發(fā)工具 TPS55386EVM-363 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)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(diào)節(jié)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(shù)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(diào)節(jié)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(shù)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(diào)節(jié)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(shù)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(diào)節(jié)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(shù)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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