- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383964 > TPS62290DRV (Texas Instruments, Inc.) Half Bridge Gate Driver; Package: 8-SO-8; Container: Tape & Reel PDF資料下載
參數(shù)資料
| 型號： | TPS62290DRV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Half Bridge Gate Driver; Package: 8-SO-8; Container: Tape & Reel |
| 中文描述： | 1降壓轉(zhuǎn)換器2步驟× 2 SON封裝 |
| 文件頁數(shù)： | 11/23頁 |
| 文件大?。?/td> | 615K |
| 代理商： | TPS62290DRV |
www.ti.com
Output voltage
Vout (PWM)
Vout +1%
PFM Comparator
threshold
Voltage Positioning
Light load
PFM Mode
moderate to heavy load
PWM Mode
100% Duty Cycle Low Dropout Operation
Undervoltage Lockout
MODE SELECTION
The MODE pin allows mode selection between forced PWM mode and Power Save Mode.
TPS62290
SLVS764–JUNE 2007
DETAILED DESCRIPTION (continued)
Figure 16. Power Save Mode Operation
The device starts to enter 100% duty cycle Mode once the input voltage comes close the nominal output
voltage. To maintain the output voltage, the High Side MOSFET switch is turned on 100% for one or more
cycles.
With further decreasing VIN the High Side MOSFET switch is turned on completely. In this case, the converter
offers a low input-to-output voltage difference. This is particularly useful in battery-powered applications to
achieve longest operation time by taking full advantage of the whole battery voltage range.
The minimum input voltage to maintain regulation depends on the load current and output voltage, and can be
calculated as:
V
IN
min = V
O
max + I
O
max
×
(R
DS(on)
max + R
L
)
With:
I
O
max = maximum output current plus inductor ripple current
R
DS(on)
max = maximum P-channel switch R
DS(on)
.
R
L
= DC resistance of the inductor
V
O
max = nominal output voltage plus maximum output voltage tolerance
The undervoltage lockout circuit prevents the device from malfunctioning at low input voltages and from
excessive discharge of the battery and disables the output stage of the converter. The undervoltage lockout
threshold is typically 1.85V with falling V
IN
.
Connecting this pin to GND enables the Power Save Mode with automatic transition between PWM and PFM
mode. Pulling the MODE pin high forces the converter to operate in fixed frequency PWM mode even at light
load currents. This allows simple filtering of the switching frequency for noise sensitive applications. In this
mode, the efficiency is lower compared to the power save mode during light loads.
The condition of the MODE pin can be changed during operation and allows efficient power management by
adjusting the operation mode of the converter to the specific system requirements.
11
Submit Documentation Feedback
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS71025PW | LOW-DROPOUT VOLTAGE REGULATOR |
| TPS71025Y | LOW-DROPOUT VOLTAGE REGULATOR |
| TPS715 | 50 mA, 24 V, 3.2 uA Supply Current Low-Dropout Linear Regulator |
| TPS728XX | 200mA Low-Dropout Linear Regulator with Pin-Selectable Dual-Voltage Level Output |
| TPS75315Q | FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS62290DRVR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVT | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS62290DRVT | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| TPS62290DRVTG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 2.25MHz 1A Step- Down Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。