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參數(shù)資料
| 型號(hào)： | ISL6744AUZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | 1 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | GREEN, PLASTIC, MO-187AA, MSOP-8 |
| 文件頁(yè)數(shù)： | 14/18頁(yè) |
| 文件大小： | 403K |
| 代理商： | ISL6744AUZ |
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14
FN9147.8
September 22, 2005
Waveforms
Typical waveforms can be found in the following Figures.
Figure 13 shows the output voltage ripple and noise at a 5A.
Figures 14 and 15 show the voltage waveforms at the
switching node shared by the upper FET source and the
lower FET drain. In particular, Figure 15 shows near ZVS
operation at 5A of load when the upper FET is turning off
and the lower FET is turning on. ZVS operation occurs
completely, implying that all the energy stored in the node
capacitance has been recovered. Figure 16 shows the
switching transition between outputs, OUTA and OUTB
during steady state operation. The deadtime duration of
46.9ns is clearly shown.
A 2.7V zener is added between the Vdd pins of ISL6700 and
ISL6744, in order to ensure that the PWM turns on only after
the driver has turned on, thereby ensuring the soft-start
function. Figure 17 shows the soft-start operation.
FIGURE 12. LINE REGULATION AT I
OUT
= 1A
13.5
13
12.5
12
11.5
10.5
42
44
45
46
47
48
49
50
51
53
INPUT VOLTAGE (V)
O
43
11
52
FIGURE 13. OUTPUT RIPPLE AND NOISE - 20MHz BW
FIGURE 14. FET DRAIN-SOURCE VOLTAGE
FIGURE 15. FET D-S VOLTAGE NEAR-ZVS TRANSITION
FIGURE 16. OUTA - OUTB TRANSITION
ISL6744
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| ISL6744AUZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6744AUZ-TR5 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述: |
| ISL6744AUZ-TR5252 | 功能描述:IC REG CTRLR BUCK PWM VM 8-MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:275kHz 占空比:50% 電源電壓:18 V ~ 110 V 降壓:無(wú) 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:是 工作溫度:-40°C ~ 85°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) |
| ISL6744EVAL1 | 功能描述:EVALUATION BOARD ISL6744 RoHS:否 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| ISL6744EVAL1Z | 功能描述:EVAL BOARD 1 FOR ISL6744 RoHS:是 類別:編程器，開(kāi)發(fā)系統(tǒng) >> 評(píng)估板 - DC/DC 與 AC/DC（離線）SMPS 系列:* 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:True Shutdown™ 主要目的:DC/DC，步升 輸出及類型:1，非隔離 功率 - 輸出:- 輸出電壓:- 電流 - 輸出:1A 輸入電壓:2.5 V ~ 5.5 V 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):升壓 頻率 - 開(kāi)關(guān):3MHz 板類型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
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