參數(shù)資料
型號： TPS40192DRCTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, GREEN, PLASTIC, SON-10
文件頁數(shù)： 8/38頁
文件大?。?/td> 707K
代理商： TPS40192DRCTG4
I
G + fSW
Q
G (high) ) QG (low)
SLUS719C – MARCH 2007 – REVISED AUGUST 2010
www.ti.com
5-V Regulator
These devices have an on board 5-V regulator that allows the parts to operate from a single voltage feed. No
separate 5-V feed to the part is required. This regulator needs to have a minimum of 1-mF of capacitance on the
BP5 pin to guarantee stability. A ceramic capacitor is suggested for this purpose.
This regulator can also be used to supply power to nearby circuitry, eliminating the need for a separate LDO in
some cases. If this pin is used for external loads, be aware that this is the power supply for the internals of the
TPS40192/3. While efforts have been made to reduce sensitivity, any noise induced on this line has an adverse
effect on the overall performance of the internal circuitry and shows up as increased pulse jitter, or skewed
reference voltage. Also, when the device is disabled by pulling the EN pin low, this regulator is turned off and will
not be available to supply power.
The amount of power available from this pin varies with the size of the power MOSFETs that the drivers must
operate. Larger MOSFETs require more gate drive current and reduce the amount of power available on this pin
for other tasks. The total current that can be drwan from this pin by both the gate drive and external loads cannot
exceed 50mA. The device uses up to 4mA from the regulator and the total gate drive current can be found from
For regulator stability, a 1-mF capacitor is required to be connected from BP5 to GND. In some applications using
higher gate charge MOSFETs, a larger capacitor is required for noise suppression. For a total gate charge of
both the high and low side MOSFETs greater than 20 nC, a 2.2-mF or larger capacitor is recommended.
where
IG is the required gate drive current
f SW is the switching frequency (600 kHz for TPS40192, and 300 kHz for TPS40193)
QG(high) is the gate charge requirement for the high-side FET when VGS=5 V
QG(low) is the gate charge requirement for the low-side FET when VGS=5 V
(5)
16
Copyright 2007–2010, Texas Instruments Incorporated
Product Folder Link(s): TPS40192 TPS40193
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相關代理商/技術參數(shù)
參數(shù)描述
TPS40192EVM-001 功能描述:電源管理IC開發(fā)工具 TPS40192 Evaluation Module 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
TPS40192EVM-525 功能描述:電源管理IC開發(fā)工具 TPS40192EVM-525 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
TPS40193 制造商:TI 制造商全稱:Texas Instruments 功能描述:4.5-V TO 18-V INPUT 10-PIN SYNCHRONOUS BUCK CONTROLLER WITH POWER GOOD
TPS40193DRCR 功能描述:DC/DC 開關控制器 4.5V-8V Input Synch Buck Contr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
TPS40193DRCRG4 功能描述:DC/DC 開關控制器 4.5V-18V Input Synch Buck Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
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