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參數(shù)資料
| 型號： | TPS61170DRV |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 1.2A High Voltage Boost Converter in 2x2mm2 QFN Package |
| 中文描述： | 1.2A的高電壓升壓轉(zhuǎn)換器2x2mm2 QFN封裝 |
| 文件頁數(shù)： | 10/22頁 |
| 文件大?。?/td> | 405K |
| 代理商： | TPS61170DRV |
www.ti.com
VBG
1.229 V
CTRL
Error
Amplifier
FB
1 WIRE PROGRAM MODE
The CTRL pin features a simple digital interface to control the feedback reference voltage. The 1 wire mode can
save the processor power and battery life as it does not require a PWM signal all the time, and the processor can
enter idle mode if available.
EasyScale
EasyScale is a simple but very flexible one pin interface to configure the FB voltage. The interface is based on a
master-slave structure, where the master is typically a microcontroller or application processor.
Figure 15
and
Table 1
give an overview of the protocol. The protocol consists of a device specific address byte and a data byte.
The device specific address byte is fixed to 72 hex. The data byte consists of five bits for information, two
address bits, and the RFA bit. The RFA bit set to high indicates the
Request for Acknowledge
condition. The
Acknowledge condition is only applied if the protocol was received correctly. The advantage of EasyScale
compared with other on pin interfaces is that its bit detection is in a large extent independent from the bit
transmission rate. It can automatically detect bit rates between 1.7kBit/sec and up to 160kBit/sec.
TPS61170
SLVS789–NOVEMBER 2007
Figure 14. Block Diagram of Programmable FB Voltage Using PWM Signal
The TPS61170 adopts the EasyScale protocol, which can program the FB voltage to any of the 32 steps with
single command. See the
Table 1
for the FB pin voltage steps. The programmed reference voltage is stored in
an internal register. The default value is full scale when the device is first enabled (V
FB
= 1.229V). A power reset
clears the register value and reset it to default.
Table 1. Selectable FB Voltage
FB voltage
(mV)
0.000
0.031
0.049
0.068
0.086
0.104
0.123
0.141
0.160
0.178
0.197
0.215
0.234
0.270
0.307
D4
D3
D2
D1
D0
0
1
2
3
4
5
6
7
8
9
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
10
11
12
13
14
10
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Copyright 2007, Texas Instruments Incorporated
Product Folder Link(s):
TPS61170
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS61170DRVR | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2A Sw Hi Vltg Boost Conv 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 |
| TPS61170DRVRG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2A Sw Hi Vltg Boost 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 |
| TPS61170DRVT | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2A Sw Hi Vltg Boost Conv 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 |
| TPS61170DRVT | 制造商:Texas Instruments 功能描述:Voltage Regulators |
| TPS61170DRVTG4 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 1.2A Sw Hi Vltg Boost 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 |
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