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参数资料
| 型号： | ISL6524EVAL1 |
| 厂商： | Intersil |
| 文件页数： | 6/12页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD VRM8.5 ISL6524 |
| 标准包装： | 1 |
| 主要目的： | 特殊用途 DC/DC，VRM 电源 |
| 输出及类型： | 4，非隔离 |
| 输出电压： | 1.05 ~ 1.825V，1.2V，1.5V，1.8V |
| 电流 - 输出： | 14A，1A，1A，1A |
| 输入电压： | 3.3V，5V，12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 200kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ISL6524 |
Application Note 9925
AC Tolerance
High dV/dt spikes present in the output voltage waveform
under highly dynamic load application (high dI/dt) are due to
the ESR and the ESL of the output capacitance. These
spikes coincide with the transient load’s rising and falling
edges, and decreasing their amplitude can be achieved by
using lower ESR/ESL output capacitors (such as surface-
mount tantalum capacitors), and/or the addition of more
ceramic capacitors, which have inherently low ESR/ESL.
DC Tolerance
The no-load DC output voltage tolerance reduces virtually to
the tolerance of the controller and that of the resistors in the
DC feedback path. As the regulation tolerance of the
controller is a design constraint, the only way to improve the
DC regulation reduces to using precision resistors in the DC
feedback path.
If output inductor based droop is employed (as shown in the
default shipping configuration), the output voltage droop will
also exhibit a temperature variation. As temperature will
affect the DC resistance of the output inductor, the slope of
the output droop will increase slightly with temperature.
VRM8.5 (Rev. 1.0) Compliance
Although the transient response of the ISL6523EVAL1 and
ISL6524EVAL1 evaluation boards may prove satisfactory, to
build a well designed application around any of these two
controllers requires careful consideration of all the
parameters involved in the output regulation. Such careful
analysis of these two designs suggests that to yield a 22A
VRM8.5 compliant regulator, one more capacitor is needed
6
in parallel with the VOUT1 output (same type as already
populated). Additionally, to support the increased input RMS
current of a continuous 22A load, another input capacitor is
also required in parallel with C1 (same type as C1).
However, compliance with this set of standards is not directly
related to the use of a certain capacitor technology. Several
solutions to meeting the output regulation requirements can
be derived, using capacitors from various vendors, with
distinctly different characteristics.
Conclusion
The ISL6523EVAL1 and ISL6524EVAL1 evaluation boards
showcase highly integrated approaches to providing system
power control in late Pentium 3 computer systems. Typical
implementation requires minimum effort and a reduced
number of external components, yet provides a full array of
standard features.
References
For Intersil documents available on the internet, see web site
www.intersil.com/
[1] ISL6523 Data Sheet, Intersil Corporation, Power
Management Products Division, Document No.
FN9024, 2001.
[2] ISL6524 Data Sheet, Intersil Corporation, Power
Management Products Division, Document No.
FN9015, 2001.
[3] ATX Specification, Version 2.02, October 1998, Intel
Corporation (http://www.teleport.com/~atx/).
相关PDF资料 |
PDF描述 |
|---|---|
| ISL6527EVAL1 | EVALUATION BOARD SOIC ISL6527 |
| ISL6532AEVAL1 | EVALUATION BOARD 1 ISL6532A |
| ISL6553EVAL1 | EVALUATION BOARD ISL6553 |
| ISL6558EVAL2 | EVAL BOARD W/6605 DRVRS ISL6558 |
| ISL6559EVAL2 | EVALUATION BOARD 2 ISL6559 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6525CB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6525CB-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
| ISL6525CBZ | 功能描述:电压模式 PWM 控制器 VTT REG FORVRM 8.5 1 4LD RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| ISL6525CBZ-T | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL6526ACB | 功能描述:IC REG CTRLR BUCK PWM VM 14-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,000 系列:- PWM 型:电压模式 输出数:1 频率 - 最大:1.5MHz 占空比:66.7% 电源电压:4.75 V ~ 5.25 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 85°C 封装/外壳:40-VFQFN 裸露焊盘 包装:带卷 (TR) |
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