参数资料
| 型号： | ISL6537ACRZ |
| 厂商： | Intersil |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG/CTRLR ACPI DUAL DDR 28QFN |
| 标准包装： | 50 |
| 应用： | 存储器，DDR/DDR2 稳压器 |
| 电流 - 电源： | 7mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-VQFN 裸露焊盘 |
| 供应商设备封装： | 28-QFN（6x6） |
| 包装： | 管件 |
ISL6537A
12V ATX
the heat to move away from the IC and also ties the pad to
P12V
C BP
the ground plane through a low impedance path.
GNDP
5VSBY
ISL6537A
5VSBY
C BP
5VDUAL
C IN
The switching components should be placed close to the
ISL6537A first. Minimize the length of the connections
between the input capacitors, C IN , and the power switches
by placing them nearby. Position both the ceramic and bulk
input capacitors as close to the upper MOSFET drain as
UGATE
PHASE
Q 1
L 1
V DDQ
possible. Position the output inductor and output capacitors
between the upper and lower MOSFETs and the load.
LGATE
COMP
FB
C 2
R 2
C 1
Q 2
R 1
C OUT1
The critical small signal components include any bypass
capacitors, feedback components, and compensation
components. Place the PWM converter compensation
components close to the FB and COMP pins. The feedback
resistors should be located as close as possible to the FB
R 4
C 3 R 3
V DDQ
pin with vias tied straight to the ground plane as required.
Feedback Compensation - PWM Buck Converters
VDDQ(2)
VTT(2)
C OUT2
V TT
3.3VATX
Q 1
C IN
Figure 3 highlights the voltage-mode control loop for a
synchronous-rectified buck converter. The output voltage
(V OUT ) is regulated to the Reference voltage level. The error
amplifier output (V E/A ) is compared with the oscillator (OSC)
triangular wave to provide a pulse-width modulated (PWM)
wave with an amplitude of V IN at the PHASE node. The
PWM wave is smoothed by the output filter (L O and C O ).
PWM4
OSC
DRIVER
V IN
Q 2
L 2
PWM
COMPARATOR
L O
V DDQ
-
V GMCH
Δ V OSC
+
DRIVER
PHASE
C O
-
COMP4
FB4
C 6
R 6
R 8
C 5
R 5
C 7 R 7
C OUT3
Z FB
V E/A
+
ERROR
AMP
Z IN
REFERENCE
ESR
(PARASITIC)
V DDQ
Z IN
DRIVE2
FB2
R 10
R 9
Q 3
V TT_GMCH/CPU
C OUT4
DETAILED COMPENSATION COMPONENTS
Z FB
C 1
C 2 R 2 C 3 R 3
3.3VATX
DRIVE3
FB3
GND PAD
R 12
R 11
Q 3
C OUT5
V DAC
COMP
-
+
ISL6537A
REFERENCE
FB
R 4
R 1
V DDQ = 0.8 × ? 1 + ------ 1 - ?
KEY
ISLAND ON POWER PLANE LAYER
ISLAND ON CIRCUIT AND/OR POWER PLANE LAYER
VIA CONNECTION TO GROUND PLANE
? R ?
? R 4 ?
FIGURE 3. VOLTAGE-MODE BUCK CONVERTER
COMPENSATION DESIGN AND OUTPUT
VOLTAGE SELECTION
FIGURE 2. PRINTED CIRCUIT BOARD POWER PLANES
AND ISLANDS
12
FN9143.5
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6537ACRZR5160 | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537ACRZ-T | 功能描述:IC REG/CTLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 应用:热电冷却器 电流 - 电源:- 电源电压:3 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.173"，4.40mm 宽）裸露焊盘 供应商设备封装:28-TSSOP 裸露焊盘 包装:管件 产品目录页面:1410 (CN2011-ZH PDF) |
| ISL6537ACRZ-TR5160 | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537CR | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| ISL6537CR-T | 功能描述:IC REG/CTRLR ACPI DUAL DDR 28QFN RoHS:否 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
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