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參數(shù)資料
| 型號： | ISL6540ACRZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability |
| 中文描述： | 4 A SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封裝： | 5 X 5 MM, ROHS COMPLIANT, PLASTIC, MO-220VHHD-1, QFN-28 |
| 文件頁數(shù)： | 19/20頁 |
| 文件大?。?/td> | 430K |
| 代理商： | ISL6540ACRZ |
19
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN6288.2
March 12, 2007
AVX, and the 593D series from Sprague are both surge
current tested.
MOSFET Selection/Considerations
The ISL6540A requires 2 N-Channel power MOSFETs.
These should be selected based upon r
DS(ON)
, gate supply
requirements, and thermal management requirements.
In high-current applications, the MOSFET power dissipation,
package selection and heatsink are the dominant design
factors. The power dissipation includes two loss
components; conduction loss and switching loss. The
conduction losses are the largest component of power
dissipation for both the upper and the lower MOSFETs.
These losses are distributed between the two MOSFETs
according to duty factor (see the equations below). The
upper MOSFET exhibits turn-on and turn-off switching
losses as well as the reverse recover loss, while the
synchronous rectifier exhibits body-diode conduction losses
during the leading and trailing edge dead times.
where D is the duty cycle = V
O
/VIN; Q
rr
is the reverse
recover charge; t
DL
and t
DT
are leading and trailing edge
dead time, and t
ON
& t
OFF
are the switching intervals.
These equations do not include the gate-charge losses that
are proportional to the total gate charge and the switching
frequency and partially dissipated by the internal gate
resistance of the MOSFETs. Ensure that both MOSFETs are
within their maximum junction temperature at high ambient
temperature by calculating the temperature rise according to
package thermal-resistance specifications. A separate
heatsink may be necessary depending upon MOSFET
power, package type, ambient temperature and air flow.
ISL6540A DC/DC Converter Application Circuit
Detailed information on the application circuit, including a
complete Bill-of-Materials and circuit board description, can
be found in application note AN1253. See Intersil’s home
page on the web: http://www.intersil.com.
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
K
I
DUTY CYCLE (D)
0.5Io
0.25Io
Δ
I=0Io
FIGURE 12. INPUT-CAPACITOR CURRENT MULTIPLIER FOR
SINGLE-PHASE BUCK CONVERTER
P
LOWER
I
O
2
I
Δ
2
12
-------
+
r
L
,L
---------------------------
1
D
–
(
)
P
DEAD
+
=
P
DEAD
I
O
I
Δ
12
------
+
V
DT
t
DT
I
O
I
Δ
12
------
–
V
DL
t
DL
+
F
S
=
P
SW
I
O
I
Δ
12
------
+
t
OFF
I
O
I
Δ
12
------
–
t
ON
+
VIN
F
S
=
P
UPPER
I
O
2
I
Δ
2
12
-------
+
r
(
U
,U
---------------------------
D
P
SW
P
Qrr
+
+
=
P
Qrr
Q
rr
VIN
F
S
=
ISL6540A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL6540ACRZA | Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability |
| ISL6540AIRZ | Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability |
| ISL6540AIRZA | Single-Phase Buck PWM Controller with Integrated High Speed MOSFET Driver and Pre-Biased Load Capability |
| ISL6545 | 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
| ISL6545A | 5V or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL6540ACRZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
| ISL6540ACRZ-TR5453 | 制造商:Intersil Corporation 功能描述:STD. ISL6540ACRZ-T W/GOLD BOND WIRE ONLY - Tape and Reel |
| ISL6540AIRZ | 功能描述:IC REG CTRLR BUCK PWM VM 28-QFN 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) |
| ISL6540AIRZA | 功能描述:IC REG CTRLR BUCK PWM VM 28-QFN 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) |
| ISL6540AIRZA-T | 功能描述:IC REG CTRLR BUCK PWM VM 28-QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR |
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