參數(shù)資料
型號(hào): ISL6522ACB
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Adjustable Precision Shunt Regulator 3-SOT-23 0 to 70
中文描述: SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO14
封裝: PLASTIC, MS-012AB, SOIC-14
文件頁數(shù): 11/13頁
文件大?。?/td> 441K
代理商: ISL6522ACB
11
FN9122.2
April 13, 2005
V
CC
less the input supply. For +5V main power and +12V
DC
for the bias, the gate-to-source voltage of Q1 is 7V. A logic-level
MOSFET is a good choice for Q1 and a logic-level MOSFET
can be used for Q2 if its absolute gate-to-source voltage rating
exceeds the maximum voltage applied to PV
CC
.
Schottky Selection
Rectifier D2 is a clamp that catches the negative inductor
swing during the dead time between turning off the lower
MOSFET and turning on the upper MOSFET. The diode must
be a Schottky type to prevent the lossy parasitic MOSFET
body diode from conducting. It is acceptable to omit the diode
and let the body diode of the lower MOSFET clamp the
negative inductor swing, but efficiency will drop one or two
percent as a result. The diode's rated reverse breakdown
voltage must be greater than the maximum input voltage.
ISL6522A DC-DC Converter Application
Circuit
Figure 11 shows a DC-DC converter circuit for a
microprocessor application, originally designed to employ
the HIP6006 controller. Given the similarities between the
HIP6006 and ISL6522A controllers, the circuit can be
implemented using the ISL6522A controller without any
modifications. Detailed information on the circuit, including a
complete bill of materials and circuit board description, can
be found in Application Note AN9722. See Intersil’s home
page on the web: http://www.intersil.com.
ISL6522A
RT
FB
COMP
SS
REF
-
+
+
-
GND
+
-
OSC
VCC
14
V
IN
C1-3
L1
C6-9
0.1
μ
F
2x 1
μ
F
1206
0.1
μ
F
μ
F
1206
15K
3x 680
μ
F
4x 1000
μ
F
UGATE
OCSET
PHASE
BOOT
SPARE
CR1
4148
Q1
3.01K
1000pF
CR2
MBR
340
C13
R1
SPARE
R4
C15
R5
C14
1
C17-18
C19
R6
C20
U1
RTN
12V
CC
2
10
9
8
7
4
5
1
3
PGND
LGATE
12
11
PVCC
13
JP1
Q2
V
OUT
RTN
ENABLE
R2
1K
COMP
TP1
PHASE
TP2
6
R7
10K
MONITOR AND
PROTECTION
+
-
C16
0.01
μ
F
33pF
SPARE
Component Selection Notes:
C1-C3 - Three each 680
μ
F 25W VDC, Sanyo MV-GX or equivalent.
C6-C9 - Four each 1000
μ
F 6.3W VDC, Sanyo MV-GX or equivalent.
L1 - Core: micrometals T50-52B; winding: ten turns of 17AWG.
CR1 - 1N4148 or equivalent.
CR2 - 3A, 40V Schottky, Motorola MBR340 or equivalent.
Q1, Q2 - Fairchild MOSFET; RFP25N05
FIGURE 11. DC-DC CONVERTER APPLICATION CIRCUIT
R3
1K
ISL6522A
相關(guān)PDF資料
PDF描述
ISL6522ACBZ Adjustable Precision Shunt Regulator 3-SOT-23 0 to 70
ISL6522ACBZ-T Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70
ISL6522ACR Adjustable Precision Shunt Regulator 3-SOT-89 0 to 70
ISL6522ACR-T Adjustable Precision Shunt Regulator 5-SOT-23 -40 to 85
ISL6522ACRZ Adjustable Precision Shunt Regulator 5-SOT-23 -40 to 85
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參數(shù)描述
ISL6522ACB-T 功能描述:IC REG CTRLR BST PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
ISL6522ACR 功能描述:IC REG CTRLR BST PWM VM 16-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
ISL6522ACR-T 功能描述:IC REG CTRLR BST PWM VM 16-QFN RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
ISL6522BCB 功能描述:IC REG CTRLR BST PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)
ISL6522BCB-T 功能描述:IC REG CTRLR BST PWM VM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 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:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR)