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參數資料
| 型號： | TPS40131RHBT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | SWITCHING CONTROLLER, 1200 kHz SWITCHING FREQ-MAX, PQCC32 |
| 封裝： | GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 39/40頁 |
| 文件大小： | 940K |
| 代理商： | TPS40131RHBT |
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SLVS635 – FEBRUARY 2007
Terminal Functions (continued)
TERMINAL
I/O
DESCRIPTION
NAME
NO.
Gate drive output for the high-side N-channel MOSFET switch for PWM2. Output is referenced to SW2
HDRV2
25
O
and is bootstrapped for enhancement of the high-side switch
Used to set the cycle-by-cycle current limit threshold. If ILIM threshold is reached, the PWM cycle is
terminated and the converter delivers limited current to the output. The relationship between ILIM and the
ILIM
15
I
maximum phase current is described in Equation 2 and Equation 3. See the Overcurrent Protection
section for more details.
Gate drive output for the low-side synchronous rectifier (SR) N-channel MOSFET for PWM1. See Layout
LDRV1
29
O
Considerations section.
Gate drive output for the low-side synchronous rectifier (SR) N-channel MOSFET for PWM2. See Layout
LDRV2
27
O
Considerations section.
OVSET
2
I
A resistor divider, on this pin connected to the output voltage sets the overvoltage sense point.
Power good indicator of the output voltage. This open-drain output connects to a voltage via an external
PGOOD
16
O
resistor. When the FB pin voltage is between 0.616 V to 0.784 V (88% to 112% of VREF), the PGOOD
output is in a high impedance state.
Power ground reference for the controller lower gate drivers. There should be a high-current return path
PGND
28
-
from the sources of the lower MOSFETs to this pin.
RT
17
I
Connecting a resistor from this pin to ground sets the oscillator frequency.
Provides user programmable soft-start by means of a capacitor connected to the pin. If an undervoltage or
SS
23
I
over current fault is detected the soft-start capacitor cycles 7 times with no switching before a normal
soft-start sequence allowed.
Connect to the switched node on converter 1. Power return for the channel 1 upper gate driver. There
SW1
31
I
should be a high-current return path from the source of the upper MOSFET to this pin. It is also used by
the adaptive gate drive circuits to minimize the dead time between upper and lower MOSFET conduction.
Connect to the switched node on converter 2. Power return for the channel 2 upper gate driver. There
SW2
26
I
should be a high-current return path from the source of the upper MOSFET to this pin. It is also used by
the adaptive gate drive circuits to minimize the dead time between upper and lower MOSFET conduction.
UVLO
22
O
A voltage divider from VIN to this pin, set to 1V, determines the input voltage that starts the controller.
Power input for the LDO linear regulator that powers the differential amplifer and the current sense
VDD
12
I
amplifiers.
VOUT
3
I
Non-inverting input of the differential amplifier. This pin should be connected to VOUT at the point of load.
VREF
9
O
Output of an internal reference voltage. The load may be up to 100-
μA DC.
VIN5
30
I
Power input for the device. A 1.0-
μF ceramic capacitor should be connected from this pin to ground.
8
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS40131RHBT | 制造商:Texas Instruments 功能描述:DC/DC Converter (DC-DC) / Switching Regu 制造商:Texas Instruments 功能描述:IC, SYNC BUCK CONTROLLER, QFN-32 |
| TPS40131RHBTG4 | 功能描述:DC/DC 開關控制器 Two-Phase 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 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40132 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:TWO-PHASE, SYNCHRONOUS BUCK CONTROLLER WITH INTEGRATED MOSFET DRIVERS |
| TPS40132RHBR | 功能描述:DC/DC 開關控制器 2Ch Multiphase 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 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
| TPS40132RHBRG4 | 功能描述:DC/DC 開關控制器 2Ch Multiphase 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 輸出端數量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK |
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