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參數(shù)資料
| 型號： | ISL6721AV |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1024 x 9 x 2 Asynchronous Bidirectional FIFO Memory 64-TQFP 0 to 70 |
| 中文描述： | 1 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, MO-153AB, TSSOP-16 |
| 文件頁數(shù)： | 17/20頁 |
| 文件大小： | 481K |
| 代理商： | ISL6721AV |
17
Regulation Performance
Waveforms
Typical waveforms can be found in Figures 10 through 12.
Figure 10 shows the steady state operation of the sawtooth
oscillator waveform at RTCT (Trace 2), the SYNC output
pulse (Trace 1), and the GATE output to the converter FET
(Trace 3). Figure 11 shows the converter behavior while
operating in an over current fault condition. Trace 1 is the soft
start voltage, which increases from zero to 4.5V, at which
point the OC fault function is enabled. The OC condition is
detected and the soft start capacitor is discharged to the
4.375V OC fault threshold at which point the IC enters the
fault shutdown mode. Trace 2 shows the behavior of the
timing capacitor voltage during a shutdown fault. Most of the
functions of the IC are de-powered during a fault, and the
oscillator is among those functions. During a fault, the IC is
turned off until the restart delay has timed out. After the
delay, power is restored and the IC resumes normal
operation. Trace 3 is the GATE output during the soft start
cycle and OC fault.
Figure 12 shows the switching FET waveforms during steady
state operation. Trace 1 is drain - source voltage and Trace 2
is gate - source voltage.
TABLE 1. OUTPUT LOAD REGULATION, V
IN
= 48V
I
OUT
(A), 3.3V
0
I
OUT
(A), 1.8V
0.030
V
OUT
(V), 3.3V V
OUT
(V), 1.8V
3.351
1.825
0.39
0.030
3.281
1.956
0.88
0.030
3.251
1.988
1.38
0.030
3.223
2.014
1.87
0.030
3.204
2.029
2.39
0.030
3.185
2.057
2.89
0030
3.168
2.084
3.37
0.030
3.153
2.103
0
0.52
3.471
1.497
0.39
0.52
3.283
1.800
0.88
0.52
3.254
1.836
1.38
0.52
3.233
1.848
1.87
0.52
3.218
1.855
2.39
0.52
3.203
1.859
2.89
0.52
3.191
1.862
0
1.05
3.619
1.347
0.39
1.05
3.290
1.730
0.88
1.05
3.254
1.785
1.38
1.05
3.235
1.805
1.87
1.05
3.220
1.814
2.39
1.05
3.207
1.820
0
1.55
3.699
1.265
0.39
1.55
3.306
1.682
0.88
1.55
3.260
1.750
1.38
1.55
3.239
1.776
1.87
1.55
3.224
1.789
0
2.07
3.762
1.201
0.39
2.07
3.329
1.645
0.88
2.07
3.270
1.722
1.38
2.07
3.245
1.752
0
2.62
3.819
1.142
0.39
2.62
3.355
1.612
0.88
2.62
3.282
1.697
0
3.14
3.869
1.091
.39
3.14
3.383
1.581
FIGURE 10. TYPICAL WAVEFORMS
NOTE:
Trace 1: SYNC Output
Trace 2: RTCT Sawtooth
Trace 3: GATE Output
FIGURE 11. SOFT START W/OVER CURRENT FAULT
NOTE:
Trace 1: SS
Trace 2: RTCT Sawtooth
Trace 3: GATE Output
ISL6721
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6721AV-T | 功能描述:電流型 PWM 控制器 FLEXIBLE SINGLE END CUR MODE PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 |
| ISL6721AVZ | 功能描述:電流型 PWM 控制器 FLEX SNG ENDED CUR MODE PWM CONTRLR RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 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 |
| ISL6721AVZ-T | 功能描述:IC REG CTRLR PWM CM 16-TSSOP 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 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 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) |
| ISL6721EVAL1 | 功能描述:EVALUATION BOARD ISL6721 RoHS:否 類別:RF/IF 和 RFID >> RF 評估和開發(fā)套件，板 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 類型:GPS 接收器 頻率:1575MHz 適用于相關(guān)產(chǎn)品:- 已供物品:模塊 其它名稱:SER3796 |
| ISL6721EVAL3Z | 功能描述:EVAL BOARD 3 FOR ISL6721 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 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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