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參數(shù)資料
| 型號： | TPS2828-Q1 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | SINGLE-CHANNEL HIGH-SPEED MOSFET DRIVERS |
| 中文描述： | 單通道高速MOSFET驅(qū)動器 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 403K |
| 代理商： | TPS2828-Q1 |
SPRS289A AUGUST 2005 REVISED OCTOBER 2005
14
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
The on-board series regulator supplies approximately 20 mA of current at 11.5 V, some of which can be used for
external circuitry, if the power dissipation rating for the driver is not exceeded. When using the onboard series
regulator, an electrolytic output capacitor of 4.7
μ
F or larger is recommended. Although not required, a 0.1-
μ
F ceramic
capacitor on the input of the regulator can help suppress transient currents (see Figure 22). When not used, the
regulator should be connected to V
CC
. Grounding V
DD
results in destruction of the regulator.
Regulator
1
2
3
5
4
34 VDC
TPS2816
0.1
μ
F
PWM
Controller
0.1
μ
F
4.7
μ
F
VCC
Out
GND
0.1
μ
F
10
μ
F
VO
+
Figure 22. Boost Application
The TPS2816 and TPS2818 drivers include active pullup circuits on the inputs to eliminate the need for external pullup
resistors when using controllers with open-collector outputs (such as the TL5001). The TPS2817 and TPS2819
drivers have standard CMOS inputs, providing a total device operating current of less than 50
μ
A. All devices switch
at standard CMOS logic levels of approximately two-thirds V
CC
with positive-going input levels, and approximately
one-third V
CC
with negative-going input levels. Being CMOS drivers, these devices draw relatively large amounts of
current (approximately 5 mA) when the inputs are in the range of one-half of the supply voltage. In normal operation,
the driver input is in this range for a very short time. Care should be taken to avoid use of very low slew-rate inputs,
used under normal operating conditions. Although not destructive to the device, slew rates slower than 0.1 V/
μ
s are
not recommended.
The BiCMOS output stage provides high instantaneous drive current to rapidly toggle the power switch and very low
drop to each rail to ensure proper operation at voltage extremes.
Low-voltage circuits (less than 14 V) that require very low quiescent currents can use the TPS2828 and TPS2829
drivers. These drivers use typically 0.2
μ
A of quiescent current (with inputs high or low). They do not have the internal
regulator or the active pullup circuit, but all other specifications are the same as for the rest of the family.
2.5-V/3.3-V, 3-A application
Figure 23 illustrates the use of the TPS2817 with a TL5001 PWM controller and a TPS1110 in a simple
step-down converter application. The converter operates at 275 kHz and delivers either 2.5 V or 3.3 V
(determined by the value of R6) at 3 A (5 A peak) from a 5-V supply. The bill of materials is provided in
Table 1.
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| TPS2829DBVR | 功能描述:功率驅(qū)動器IC 2A HS Non-Invert RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2829DBVRG4 | 功能描述:功率驅(qū)動器IC Non-inverting High-Speed RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2829DBVT | 功能描述:功率驅(qū)動器IC Non-inverting High-Speed RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2829DBVTG4 | 功能描述:功率驅(qū)動器IC Non-inverting High-Speed RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| TPS2829QDBVRQ1 | 功能描述:功率驅(qū)動器IC Single-Channel H-S MOSFET Driver RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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