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| 型号： | ISL6526EVAL2 |
| 厂商： | Intersil |
| 文件页数： | 1/8页 |
| 文件大小： | 0K |
| 描述： | EVALUATION BOARD QFN ISL6526 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 2.5V |
| 电流 - 输出： | 5A |
| 输入电压： | 3.3 ~ 5 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ISL6526 |
?
Embedded DC-DC Converters Using ISL6526 and
ISL6527 PWM Controller ICs
PRELIMINARY
Application Note
June 2002
AN1021
Introduction
The ISL6526 and the ISL6527 provide power control and
protection for applications requiring low voltage and high
power. Both ICs can be biased from voltages between 3.3V
and 5V. The ISL6526 and ISL6527 contain a high
performance error amplifier, a high accuracy reference, a
fixed 300kHz or 600kHz internal oscillator, over-current
protection circuitry, and two MOSFET drivers for use in
synchronous-rectified buck converters. Both the ISL6526
and the ISL6527 are capable of regulating the output voltage
while the DC-DC converter is sinking current. The ISL6527
also allows for an external reference to be used. All these
features are packaged in a small 14-lead SOIC or a 16-lead
5x5[mm] MLFP. More complete descriptions of the ISL6526
and the ISL6527 can be found in their respective
datasheets [1, 2].
This application note details the ISL6526 and ISL6527 in
DC-DC converters for applications requiring a tightly
regulated, fixed output voltage. Low-cost applications
requiring a DC-DC converter can benefit from one of the
designs presented in this application note
ISL6526/27 Reference Designs
The ISL6526/27 evaluation board highlights the operation of
the ISL6526 and ISL6527 ICs in an embedded application.
There are five evaluation boards from which to choose.
Table 1 - Evaluation Boards
All evaluation boards have the same output filter,
compensation components and MOSFETs. They are
configured for an output of 2.5V with a maximum load of 5A.
The ISL6526 evaluation boards have a fixed output while the
ISL6527 evaluation boards allow the use of a potentiometer
to adjust the output voltage from 0.75V to 3.0V. Unless
otherwise noted, this application note assumes that the
output of the ISL6527 evaluation board is 2.5V.
Quick Start Evaluation
The evaluation board is shipped ‘ready to use’ right from the
box. The board accepts a range of input voltages from 3.3V
to 5V from a standard power supply. The output can be
exercised through an external load.
There are posts available on the board for introducing power
to the board and also for drawing current from the regulated
output. Three probe points are also available for use. These
probe points provide Kelvin connections to the
CPVOUT(TP3) and CT1(TP1) pins on both the ISL6526 and
ISL6527. The ENABLE pin on the ISL6526 and the REF_IN
pin on the ISL6527 can be probed from TP2.
Recommended Test Equipment
To test the functionality of the ISL6526 or ISL6527, the
following equipment is recommended:
- An adjustable 0 - 5V, 5A capable bench power supply
- An electronic load
Board Name
ISL6526EVAL1
ISL6526EVAL2
ISL6527EVAL1
Switching
Frequency
300kHz
and
600kHz
300kHz
300kHz
and
IC
ISL6526CB
ISL6526ACB
ISL6526CR
ISL6527CB
ISL6527ACB
Package
14 ld SOIC
16 ld MLFP
14 ld SOIC
- Four channel oscilloscope with probes
- Precision digital multimeter
Power and Load Connections
There are 2 sets of terminals that are used to supply the
input voltage and load the output.
INPUT VOLTAGE
600kHz
Connect the positive lead of the adjustable bench power
ISL6527EVAL2
600kHz
ISL6527ACR
16 ld MLFP
supply to the 3.3V post (J1). Connect the ground lead of
the supply to GND post (J2).
The ISL6526EVAL1 board is built with the ISL6526CB and
shipped with an ISL6526ACB sample piece. Evaluation of
the ISL6526CB can be performed immediately. If evaluation
of the ISL6526ACB is desired, then it is a simple matter of
replacing the controller. The ISL6527EVAL1 is shipped with
the ISL6527CB and shipped with an ISL6527ACB sample
piece. As with the ISL6526CB and ISL6526ACB, the parts
are interchangeable.
The ISL6526EVAL2 and ISL6527EVAL2 are ready for
evaluation without any modifications.
OUTPUT LOADING - SOURCING CURRENT
Connect the positive terminal of the load to the VOUT
post (J3). Connect the return terminal of the same load to
the GND post (J4).
OUTPUT LOADING - SINKING CURRENT
CAUTION: The return terminal of the load must float for
this to work properly.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright ? Intersil Americas Inc. 2002. All Rights Reserved
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6526IB | 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) |
| ISL6526IB-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) |
| ISL6526IB-TR5146 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| ISL6526IBZ | 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) |
| ISL6526IBZ-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) |
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