參數資料
型號： TPS2834PWPR
英文描述： SINGLE MOSFET DRIVER|TSSOP|14PIN|PLASTIC
中文描述： 單MOSFET驅動器|型TSSOP | 14PIN |塑料
文件頁數： 24/31頁
文件大小： 661K
代理商： TPS2834PWPR
TPS2811, TPS2812, TPS2813, TPS2814, TPS2815
DUAL HIGH-SPEED MOSFET DRIVERS
SLVS132D – NOVEMBER 1995 – REVISED NOVEMBER 1997
24
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
synchronous buck regulator
Figure 48 is the schematic for a 100-kHz synchronous-rectified buck converter implemented with a TL5001
pulse-width-modulation (PWM) controller and a TPS2812 driver. The bill of materials is provided in Table 1. The
converter operates over an input range from 5.5 V to 12 V and has a 3.3-V output capable of supplying 3 A
continuously and 5 A during load surges. The converter achieves an efficiency of 90.6% at 3 A and 87.6% at
5 A. Figures 49 and 50 show the power switch switching performance. The output ripple voltage waveforms are
documented in Figures 54 and 55.
The TPS2812 drives both the power switch, Q2, and the synchronous rectifier, Q1. Large shoot-through
currents, caused by power switch and synchronous rectifier remaining on simultaneously during the transitions,
are prevented by small delays built into the drive signals, using CR2, CR3, R11, R12, and the input capacitance
of the TPS2812. These delays allow the power switch to turn off before the synchronous rectifier turns on and
vice versa. Figure 51 shows the delay between the drain of Q2 and the gate of Q1; expanded views are provided
in Figures 52 and 53.
REG_IN
1 IN
GND
2 IN
REG_OUT
1 OUT
V
CC
2 OUT
U2
TPS2812D
1
2
3
4
8
7
6
5
Q1
IRF7406
1
3
2
R5
10 k
C11
0.47
μ
F
C100
100
μ
F
16 V
C5
100
μ
F
16 V
1
2
3
4
J1
2
1
Q2
IRF7201
3
CR1
30BQ015
C6
1000 pF
R7
3.3
L1
27
μ
F
C12
100
μ
F
16 V
C7
100
μ
F
16 V
C13
10
μ
F
10 V
1
2
3
4
J2
V
I
V
I
GND
GND
3.3 V
3.3 V
GND
GND
U1
TL5001CD
OUT
V
CC
COMP
FB
GND
RT
DTC
SCP
R2
1.6 k
C3
0.0022
μ
F
C2
0.033
μ
F
R13
10 k
C14
0.1
μ
F
R6
15
R10
1 k
R11
30 k
CR2
BAS16ZX
R12
10 k
CR3
BAS16ZX
C15
1
μ
F
R8
121 k
1%
C9
0.22
μ
F
C1
1
μ
F
R4
2.32 k
1%
R3
180
C4
0.022
μ
F
R1
1.00 k
1%
R9
90.9 k
1%
8
7
6
5
1
2
3
4
+
+
+
+
+
Figure 48. 3.3-V 3-A Synchronous-Rectified Buck Regulator Circuit
相關PDF資料
PDF描述
TPS2835DR SINGLE MOSFET DRIVER|SOP|14PIN|PLASTIC
TPS2835PWPR SINGLE MOSFET DRIVER|TSSOP|14PIN|PLASTIC
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TPS2837DR DUAL MOSFET DRIVER|SOP|8PIN|PLASTIC
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相關代理商/技術參數
參數描述
TPS2834PWPRG4 功能描述:功率驅動器IC Non-inv Fast Sync Buck MOSFET Driver RoHS:否 制造商:Micrel 產品: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
TPS2835D 功能描述:功率驅動器IC Inv Fast Sync Buck MOSFET Driver RoHS:否 制造商:Micrel 產品: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
TPS2835DG4 功能描述:功率驅動器IC Inverting Fast Synch Buck MOSFET Drvrs RoHS:否 制造商:Micrel 產品: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
TPS2835DR 功能描述:功率驅動器IC Inv Fast Sync Buck MOSFET Driver RoHS:否 制造商:Micrel 產品: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
TPS2835DRG4 功能描述:功率驅動器IC Inv Fast Sync Buck MOSFET Driver RoHS:否 制造商:Micrel 產品: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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