參數(shù)資料
型號(hào)： TPS40211DRCTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝： GREEN, PLASTIC, SON-10
文件頁(yè)數(shù)： 16/47頁(yè)
文件大小： 1375K
代理商： TPS40211DRCTG4
( )
HF
6
FB
1
C
2
1.5
10
R
=
p
G
105
R
Q
=
10
8
7
6
VDD
GDRV
ISNS
GND
TPS40210/11
L
V
IN
R
G
V
OUT
UDG-07196
www.ti.com
SLUS772D – MARCH 2008 – REVISED APRIL 2010
While the error amplifier GBWP will usually be higher, it can be as low as 1.5 MHz. If 10 × KComp × fL > 1.5 MHz,
the error amplifier gain-bandwidth product may limit the high-frequency response below that of the
high-frequency capacitor. To maintain a consistent high-frequency gain roll-off, CHF can be calculated by
(29)
Where:
CHF is the high-frequency roll-off capacitor value in F
RFB is the mid band gain setting resistor value in
GATE DRIVE CIRCUIT
Some applications benefit from the addition of a resistor connected between the GDRV pin and the gate of the
switching MOSFET. In applications that have particularly stringent load regulation (under 0.75%) requirements
and operate from input voltages above 5 V, or are sensitive to pulse jitter in the discontinuous conduction region,
this resistor is recommended. The recommended starting point for the value of this resistor can be calculated
(30)
Where:
QG is the MOSFET total gate charge at 8-V VGS in nC
RG is the suggested starting point gate resistance in
Figure 28. Gate Drive Resistor
TPS40211
The only difference between the TPS40210 and the TPS40211 is the reference voltage that the error amplifier
uses to regulate the output voltage. The TPS40211 uses a 260-mV reference and is intended for applications
where the output is actually a current instead of a regulated voltage. A typical example of an application of this
type is an LED driver. An example schematic is shown in Figure 29.
Copyright 2008–2010, Texas Instruments Incorporated
23
Product Folder Link(s): TPS40210 TPS40211
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS40211EVM-352 功能描述:電源管理IC開發(fā)工具 TPS40211EVM-352 Eval Mod RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
TPS40211EVM-352 制造商:Texas Instruments 功能描述:EVAL BOARD, TPS40211 ADJ 700mA NON SYS B
TPS40211QDGQRQ1 功能描述:LED照明驅(qū)動(dòng)器 WIDE INP CRNT MODE BOOST CONTROLLER RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N
TPS40-22 制造商:TOTAL-POWER 制造商全稱:TOTAL-POWER 功能描述:40 WATT OPEN - FRAME SWITCHING POWER SUPPLY
TPS40222 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.6-A, 1.25-MHz BUCK CONVERTER IN A 3 mm 3 mm SON PACKAGE
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