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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: 6/45頁
文件大小: 1318K
代理商: TPS55383PWPRG4
DELAY
IN
ENx
TH
ENx
t
C
farads
V
2 I
R
n
V
I
R
=
-
÷
-
è
l
(1)
TPS5538x
ENx
C
R
+
VDD2
VDDx
5 mA
1.25 V
T
Time
-
t
DELAY
0
t
DELAY
+t
SS
PVDDx
ENx
V
OUTx
1.2-V
Threshold
Output Voltage Sequencing
SLUS818 – SEPTEMBER 2008 ......................................................................................................................................................................................... www.ti.com
where:
R and C are the timing components
V
TH is the 1.2-V enable threshold voltage
I
ENx is the 6 A enable pin biasing current
Additional enable pin functionality is dictated by the state of the SEQ pin. (See the Output Voltage Sequencing
section.)
Figure 16. Startup Delay Schematic
Figure 17. Startup Delay with R-C on Enable
DESIGN HINT
If delayed output voltage startup is not necessary, simply connect EN1 and EN2 to
GND. This configuration allows the outputs to start immediately on valid application of
PVDD2.
If ENx is allowed to go high after the Outputx has been in regulation, the upper MOSFET shuts off, and the
output decays at a rate determined by the output capacitor and the load. The internal pulldown MOSFET remains
in the OFF state. (See the Bootstrap for N-Channel MOSFET section.)
The TPS5538x allows single-pin programming of output voltage startup sequencing. During power-on, the state
of the SEQ pin is detected. Based on whether the pin is tied to BP, to GND, or left floating, the outputs function
as described in Table 1.
14
Copyright 2008, Texas Instruments Incorporated
Product Folder Link(s): TPS55383 TPS55386
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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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