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參數(shù)資料
| 型號： | L6728AHTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, PDSO10 |
| 封裝： | 3 X 3 MM, ROHS COMPLIANT, VFDFPN-10 |
| 文件頁數(shù)： | 16/33頁 |
| 文件大?。?/td> | 1033K |
| 代理商： | L6728AHTR |
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L6728AH
20 A demonstration board
Doc ID 15726 Rev 1
23/33
11.1
Demonstration board description
11.1.1
Power input (VIN)
This is the input voltage for the power conversion. The high-side drain is connected to this
input. This voltage can range from 1.5 V to 12 V bus.
If the voltage is between 5 V and 12 V it can supply also the device (through the VCC pin)
and in this case the R16 (0
Ω) resistor must be present.
11.1.2
Output (VOUT)
Different output voltage rails have been tested. For each rail a few component need to be
changed: these components are used to program the desiderated output voltage and to
compensate the system. The over-current-protection limit is set to ~27 A but it can be
changed by replacing the resistors R18.
Note:
All the previous resistors are SMD 0603 package, 1/16W, 1% tolerance.
11.1.3
Signal input (VCC)
Using the input voltage VIN to supply the controller no power is required at this input.
However the controller can be supplied separately from the power stage through the VCC
input and, in this case, the R16 (0
Ω) resistor must be unsoldered.
11.1.4
Test points
Several test points are provided to have easy access at all important signal characterizing
the device:
–
COMP: The output of the error amplifier;
–
FB: The inverting input of the error amplifier;
–
PGOOD: Signaling the regular functioning (active high);
–
VGDHS: The bootstrap diode anode;
–
PHASE: Phase node;
–
LGATE: Low-side gate pin of the device;
–
HGATE: High-side gate pin of the device.
Table 7.
Rail dependent components
Ref.
8 V rail
5 V rail
3.3 V rail
2.5 V rail
1.25 V rail
0.8 V rail
Q9
Mounted
Not mounted
R7
3.6 k
Ω
3.6 k
Ω
3.6 k
Ω
3.6 k
Ω
11 k
Ω
11 k
Ω
R6, R9
3.6 k
Ω
3.6 k
Ω
4.7 k
Ω
4.7 k
Ω
22 k
Ω
22 k
Ω
R8, R13
390
Ω
680
Ω
1.5 k
Ω
2.2 k
Ω
39 k
Ω
Open
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6728ATR | 功能描述:電壓模式 PWM 控制器 HIGH FREQ SINGLE PHASE PWM CNTRL RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| L6728D | 功能描述:電流型 PWM 控制器 SNGL PHASE PWM CONTROLLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6728DTR | 功能描述:電流型 PWM 控制器 Single-Phase PWM 5V to 12V Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| L6728H | 功能描述:電壓模式 PWM 控制器 Sgl Output 300 KHz DFN-10 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| L6728HTR | 功能描述:電流型 PWM 控制器 SINGLE PHASE PWM CNTRL PWR GOOD RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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