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參數(shù)資料
| 型號： | TPS40132RHBT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 40 A SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | GREEN, PLASTIC, QFN-32 |
| 文件頁數(shù)： | 16/40頁 |
| 文件大?。?/td> | 1032K |
| 代理商： | TPS40132RHBT |
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BOOT
Qg
C
85 nF
V
=
D
(40)
Feedback Compensator Design
OUT
VC(s)
s
OUT
(s
C
ESR
1)
R
1
G
DCR
Ac
s
1
s
C
R
1
+
=
t +
+
(41)
s
IN
OUT
RAMP
OUT
RAMP
T
V
DCR
Ac
T
L
n
V
DCR
Ac
T
L
t =
-
+
÷
÷
÷
÷
è
è
÷
è
÷
÷
-
÷
÷
÷
è
è
è
l
(42)
fVCP1
OUT
1
3.84 kHz
2
C
R
=
p
(43)
SLUS776A – DECEMBER 2007 – REVISED FEBRUARY 2008
BOOT1, BOOT2, SW1, SW2 (Pin 1) (Pin 24) (Pin 31) (Pin 26)
A bootstrap capacitor is connected between the BOOT1 and SW1 pin or between BOOT2 and SW2 pin. The
bootstrap capacitor depends on the total gate charge of the high-side MOSFET and the amount of droop allowed
on the bootstrap capacitor.
where
Qg is 17nC
ΔV is 0.2 V
For this application, a 0.1-
F capacitor is selected. To reduce the turn on speed of the high-side MOSFET and
control the ringing, a 2-
resistor is placed in series with the BOOT pin.
EN/SYNC (Pin 14) Enable and Synchronization
This pin is either tied to BP5 to enable the chip or connected to an external clock.
VREF EA+ (Pin 9) (Pin 10) Voltage Reference and Error Amplifier
VREF and EA+ are directly connected together. A 0.1-
F decoupling capacitor is recommended.
VDD, VIN5, BP5, BP8, AGND, PGND, PwPd (Pin 12) (Pin 30) (Pin 21) (Pin 13) (Pin 20) (Pin 28) (Pin 33)
VDD is directly connected to VIN and a 0.1-
F decoupling capacitor is recommended.
VIN5 is connected to external +5 V and a 100-
F bulk capacitor and a 1-F decoupling capacitor are
recommended.
BP5 is filtered from VIN5. A 10-
resistor and a 0.1-
F capacitor are recommended for the low pass filter.
BP8 is decoupled with a 0.1-
F capacitor to GND. A
GND and PwPd are tied to analog GND and PGND is tied to power GND.
Peak current mode control method is employed in the controller. A small signal model is developed from the
COMP signal to the output.
The time constant,
τ
S, is defined by Equation 42.
The low frequency pole is calculated in Equation 43.
Another pole from control to output is calculated in Equation 44.
Copyright 2007–2008, Texas Instruments Incorporated
23
Product Folder Link(s) :TPS40132
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| TPS40132RHBTG4 | 功能描述:DC/DC 開關(guān)控制器 2Ch Multiphase Cntrlr RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)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(fēng)格: 封裝 / 箱體:CPAK |
| TPS40-14 | 制造商:TOTAL-POWER 制造商全稱:TOTAL-POWER 功能描述:40 WATT OPEN - FRAME SWITCHING POWER SUPPLY |
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| TPS40140EVM-003 | 功能描述:電源管理IC開發(fā)工具 32A Sgl Output 2-Ph Buck Conv 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 |
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