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| 型號： | TPS61073DDC |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH |
| 中文描述： | 90％高效同步升壓轉(zhuǎn)換器和600毫安開關(guān) |
| 文件頁數(shù)： | 13/21頁 |
| 文件大小： | 400K |
| 代理商： | TPS61073DDC |
www.ti.com
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- Output Voltage - V
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VBAT = 1.2 V
VBAT = 1.8 V
VBAT = 2.4 V
VBAT = 3.6 V
VBAT = 5 V
Power-Save Mode
TPS61070, TPS61071
TPS61072, TPS61073
SLVS510A–JULY 2006–REVISED JANUARY 2007
DETAILED DESCRIPTION (continued)
Figure 22. Precharge and Short Circuit Current
After charging the output capacitor to the input voltage, the device starts switching. If the input voltage is below
1.8 V, the device works with a fixed duty cycle of 70% until the output voltage reaches 1.8 V. After that the duty
cycle is set depending on the input output voltage ratio. Until the output voltage reaches its nominal value, the
boost switch current limit is set to 50% of its nominal value to avoid high peak currents at the battery during
start-up. As soon as the output voltage is reached, the regulator takes control, and the switch current limit is set
back to 100%.
The TPS61070 and TPS61073
(1)
are capable of operating in two different modes. At light loads, when the
inductor current becomes zero, they automatically enter the power-save mode to improve efficiency. In the
power-save mode, the converters only operate when the output voltage trips below a set threshold voltage. It
ramps up the output voltage with one or several pulses and returns to the power-save mode once the output
voltage exceeds the set threshold voltage. If output power demand increases and the inductor current no longer
goes below zero, the device again enters the fixed PWM mode. In this mode, there is no difference between the
PWM only versions TPS61071 and TPS61072 and the power-save mode enabled versions TPS61070 and
TPS61073.
(1)
TPS61073 is in the prodcut preview stage of development.
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| TPS61073DDCR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 600mA Sw 90% Eff PFM/PWM 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 |
| TPS61073DDCR | 制造商:Texas Instruments 功能描述:DC/DC Converter IC |
| TPS61073DDCRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 Adj 600mA Sw 90% Eff PFM/PWM Boost 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 |
| TPS6107X | 制造商:TI 制造商全稱:Texas Instruments 功能描述:90% EFFICIENT SYNCHRONOUS BOOST CONVERTER WITH 600-mA SWITCH |
| TPS61080 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:HIGH VOLTAGE DC/DC BOOST CONVERTER WITH 0.5-A/1.3-A INTEGRATED SWITCH |
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