參數(shù)資料
型號： TPS40210DGQG4
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, MSOP-10
文件頁數(shù)： 16/47頁
文件大小： 1375K
代理商： TPS40210DGQG4
( )
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
TPS40210DGQR 功能描述:電流型 PWM 控制器 Wide Input Rnge Crnt Mode Boost Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40210DGQRG4 功能描述:電流型 PWM 控制器 Wide In Range Crnt Mode Boost Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40210DRCR 功能描述:電流型 PWM 控制器 Wide Inp Rng Crnt Mode Boost Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40210DRCRG4 功能描述:電流型 PWM 控制器 Wide In Range Crnt Mode Boost Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
TPS40210DRCT 功能描述:電流型 PWM 控制器 Wide Inp Rng Crnt Mode Boost Cntrlr RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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