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| ADP2165-6 5-6A降压稳压器解决方案 |
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| 文章来源： 更新时间：2015/1/23 12:28:00 |
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ADI公司的ADP2165/ADP2166是集成了19 mΩ高边FET和15 mΩ同步整流FET的高效电流模式控制的降压DC/DC稳压器,开关频率从250kHz到1.4MHz开编程,输入电压2.7V-5.5V,输出电压3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V或1.0 V可选择,支持输出电压从0.6V到90%输入电压, ADP2165输出电流5A, ADP2166输出电流6A,主要用在POL稳压,通信和网络,高端消费类电子以及工业,仪表和健康设备.本文介绍了ADP2165/ADP2166主要特性, 功能框图和几种典型应用电路,以及ADP2165/6降压稳压器评估板主要特性,电路图,材料清单和PCB设计图.
The ADP2165/ADP2166 are high efficiency, current mode control, step-down dc-to-dc regulators with an integrated 19 mΩ high-side FET and a 15 mΩ synchronous rectified FET. The ADP2165/ADP2166 combine a small size, 4 mm × 4 mm LFCSP package with an accurate current limit, resulting in a smaller inductor size and a high power density, point of load solution.
Key features include precision enable, power-good monitor, and output voltage tracking to facilitate robust sequencing. The switching frequency can be programmed from 250 kHz to 1.4 MHz, or it can be fixed at 620 kHz or 1.2 MHz. The synchronization function allows the switching frequency to synchronize to an external clock, minimizing the electromagnetic interference (EMI) of the system.The ADP2165/ADP2166 are designed to be extremely flexible with the addition of a minimal amount of external components to program soft start and control loop compensation.
The ADP2165/ADP2166 are supplied from an input voltage of 2.7 V to 5.5 V. Output voltage options include 3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V, or 1.0 V fixed outputs and adjustable options capable of supporting an output voltage range from 0.6 V to 90% of the input voltage. Protection features include undervoltage lockout (UVLO), overvoltage protection (OVP), overcurrent protection (OCP), and thermal shutdown (TSD) for robust performance.
The ADP2165/ADP2166 operate over the −40℃ to +125℃ junction temperature range and are available in a 24-lead LFCSP_WQ package.
ADP2165/ADP2166主要特性:
Continuous output current
ADP2165: 5 A
ADP2166: 6 A
Integrated MOSFET
High-side on resistance: 19 mΩ
Low-side on resistance: 15 mΩ
Reference voltage: 0.6 V ± 1% over temperature range
Input voltage range: 2.7 V to 5.5 V
Current mode architecture
Switching frequency
Fixed frequency: 620 kHz or 1.2 MHz
Adjustable frequency: 250 kHz to 1.4 MHz
Synchronizes to external clock: 250 kHz to 1.4 MHz
Selectable synchronize phase shift: in phase or out of phase
External compensation
Programmable soft start
Startup into a precharged output
Voltage tracking input
Power-good output and precision enable input
Accurate current limit
Available in 24-lead, 4 mm × 4 mm LFCSP_WQ package
Supported by ADIsimPower™ design tool
ADP2165/ADP2166应用:
Point of load regulation
Communications and networking
High end consumer
Industrial, instrumentation, and healthcare
图1. ADP2165/ADP2166功能框图
图2. ADP2165/6 1.2V 5A/6A 620Hz降压稳压器应用电路图
图3. ADP2165/6 1.8V 5A/6A 1.2MHz降压稳压器应用电路图
图4. ADP2165/6 3.3V 5A/6A 1.2MHz降压稳压器应用电路图
图5. ADP2165/6 1.2V 5A/6A 1.2MHz降压稳压器应用电路图
ADP2165/6降压稳压器评估板
The ADP2165/ADP2166 are synchronous, step-down dc-to-dc regulators in a compact 4 mm × 4 mm LFCSP_WQ package. The regulator runs from input voltages of 2.7 V to 5.5 V and requires minimal external components to provide a high efficiency solution with an integrated high-side FET and a synchronous rectified FET.
The ADP2165 evaluation board (ADP2165-EVALZ) and the ADP2166 evaluation board (ADP2166-EVALZ) provide an easy way to evaluate the devices. This user guide describes how to quickly set up the board to collect performance data.
Complete information about the ADP2165/ADP2166 is available in the ADP2165/ADP2166 data sheet, which should be consulted in conjunction with this user guide when using the evaluation board.
ADP2165/6降压稳压器评估板主要特性:
Full featured evaluation board for the ADP2165/ADP2166
5 A (ADP2165)/6 A (ADP2166) continuous output current
±1% output accuracy over temperature range
Input voltage range: 2.7 V to 5.5 V
Output voltage from 0.6 V to 0.9 × VIN
Precision enable pin with hysteresis
Integrated high-side and low-side MOSFET
ADIsimPower™ design tool
图6. ADP2165降压稳压器评估板外形图
图7. ADP2166降压稳压器评估板外形图
图8. ADP2165-EVALZ评估板电路图
图9. ADP2166-EVALZ评估板电路图
ADP2165-EVALZ评估板材料清单:
ADP2166-EVALZ评估板材料清单:
图10. ADP2165/6-EVALZ评估板PCB设计图 |
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