- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383148 > ISL6439CB-T (INTERSIL CORP) Single Sync Buck PWM Controller for Broadband Gateway Applications PDF資料下載
參數(shù)資料
| 型號： | ISL6439CB-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single Sync Buck PWM Controller for Broadband Gateway Applications |
| 中文描述： | SWITCHING CONTROLLER, 325 kHz SWITCHING FREQ-MAX, PDSO14 |
| 封裝： | PLASTIC, MS-012-AB, SOIC-14 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 379K |
| 代理商： | ISL6439CB-T |
13
minimize the voltage drop across the bootstrap capacitor
during the on-time of the upper MOSFET. Initial calculations
with V
BOOT2
no less than 4V will quickly help narrow the
bootstrap capacitor range.
For example, consider an upper MOSFET is chosen with a
maximum gate charge, Q
g
, of 100nC. Limiting the voltage
drop across the bootstrap capacitor to 1V results in a value
of no less than 0.1
μ
F. The tolerance of the ceramic capacitor
should also be considered when selecting the final bootstrap
capacitance value.
A fast recovery diode is recommended when selecting a
bootstrap diode to reduce the impact of reverse recovery
charge loss. Otherwise, the recovery charge, Q
RR
, would
have to be added to the gate charge of the MOSFET and
taken into consideration when calculating the minimum
bootstrap capacitance.
ISL6439 DC-DC Converter Application Circuit
Figure 8 shows an application circuit of a DC-DC Converter.
Detailed information on the circuit, including a complete Bill-
of-Materials and circuit board description, can be found in
the ISL6439 Application Note.
Component Selection Notes:
C
3,8,9
- Each
150
μ
F, Panasonic EEF-UE0J151R or Equivalent.
D1 - 30mA Schottky Diode, MA732 or Equivalent
L
1
- 1
μ
H Inductor, Panasonic P/N ETQ-P6F1ROSFA or Equivalent.
Q
1
-
Fairchild MOSFET; ITF86110DK8.
2.5V @ 5A
FB
COMP
UGATE
PHASE
BOOT
GND
LGATE
ISL6439
R
3
R
5
1.07k
C
10
C
11
R
2
L
1
D
1
C
7
C
1
0.1
μ
F
C
4
C
6
1
μ
F
C
8,9
OCSET
CPVOUT
C
3
R
1
Q
1
CT1
CT2
CPGND
VCC
3.3V
C
5
10
μ
F
Ceramic
C
2
C
12
R
4
GND
U
1
GND
14
1
2
3
4
5
8
6
7
9
10
11
12
13
TP
1
TP
3
ENABLE
9.76k
6.49k
2.26k
124
1000pF
0.22
μ
F
0.1
μ
F
33pF
5600pF
8200pF
ENABLE
FIGURE 8. 3.3V to 2.5V 5A DC-DC CONVERTER
ISL6439
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6439EVAL1 | Single Sync Buck PWM Controller for Broadband Gateway Applications |
| ISL6439EVAL2 | Single Sync Buck PWM Controller for Broadband Gateway Applications |
| ISL6439IR-T | Single Sync Buck PWM Controller for Broadband Gateway Applications |
| ISL6439IRZ | Single Sync Buck PWM Controller for Broadband Gateway Applications |
| ISL6439IRZ-T | Single Sync Buck PWM Controller for Broadband Gateway Applications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6439CBZ | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC 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)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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) |
| ISL6439CBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC 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)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝: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) |
| ISL6439CR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Intersil Corporation 功能描述: |
| ISL6439CR-T | 制造商:Rochester Electronics LLC 功能描述:- Tape and Reel 制造商:Intersil Corporation 功能描述: |
| ISL6439EVAL1 | 功能描述:EVALUATION BOARD 1 ISL6439 RoHS:否 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)品培訓模塊:Obsolescence Mitigation Program 標準包裝: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)壓器拓撲結(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 |
發(fā)布緊急采購，3分鐘左右您將得到回復。