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| ADP2165-6 5-6A降壓穩(wěn)壓器解決方案 |
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| 文章來源： 更新時間：2015/1/23 12:28:00 |
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ADI公司的ADP2165/ADP2166是集成了19 mΩ高邊FET和15 mΩ同步整流FET的高效電流模式控制的降壓DC/DC穩(wěn)壓器,開關(guān)頻率從250kHz到1.4MHz開編程,輸入電壓2.7V-5.5V,輸出電壓3.3 V, 2.5 V, 1.8 V, 1.5 V, 1.2 V或1.0 V可選擇,支持輸出電壓從0.6V到90%輸入電壓, ADP2165輸出電流5A, ADP2166輸出電流6A,主要用在POL穩(wěn)壓,通信和網(wǎng)絡(luò),高端消費(fèi)類電子以及工業(yè),儀表和健康設(shè)備.本文介紹了ADP2165/ADP2166主要特性, 功能框圖和幾種典型應(yīng)用電路,以及ADP2165/6降壓穩(wěn)壓器評估板主要特性,電路圖,材料清單和PCB設(shè)計圖.
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應(yīng)用:
Point of load regulation
Communications and networking
High end consumer
Industrial, instrumentation, and healthcare
圖1. ADP2165/ADP2166功能框圖
圖2. ADP2165/6 1.2V 5A/6A 620Hz降壓穩(wěn)壓器應(yīng)用電路圖
圖3. ADP2165/6 1.8V 5A/6A 1.2MHz降壓穩(wěn)壓器應(yīng)用電路圖
圖4. ADP2165/6 3.3V 5A/6A 1.2MHz降壓穩(wěn)壓器應(yīng)用電路圖
圖5. ADP2165/6 1.2V 5A/6A 1.2MHz降壓穩(wěn)壓器應(yīng)用電路圖
ADP2165/6降壓穩(wěn)壓器評估板
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降壓穩(wěn)壓器評估板主要特性:
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
圖6. ADP2165降壓穩(wěn)壓器評估板外形圖
圖7. ADP2166降壓穩(wěn)壓器評估板外形圖
圖8. ADP2165-EVALZ評估板電路圖
圖9. ADP2166-EVALZ評估板電路圖
ADP2165-EVALZ評估板材料清單:
ADP2166-EVALZ評估板材料清單:
圖10. ADP2165/6-EVALZ評估板PCB設(shè)計圖 |
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