NCP3218屬于集成電路（IC）的特殊用途穩(wěn)壓器。由安森美半導(dǎo)體公司制造生產(chǎn)的NCP3218特殊用途穩(wěn)壓器該系列產(chǎn)品用于電源控制、某種形式的轉(zhuǎn)換，適用于特定的復(fù)雜應(yīng)用。因此，各種產(chǎn)品特性集差異較大，包括空燃比傳感器接口、汽車交流發(fā)電機電壓調(diào)節(jié)、DDR 端接、液體透鏡控制、摩托車轉(zhuǎn)向信號控制、熱電 (peltier) 冷卻器控制、壓電觸覺控制、閥門控制、小型發(fā)動機管理等。

The APD3212/NCP3218/NCP3218G is a highly efficient, multi?phase, synchronous buck switching regulator controller. With its integrated drivers, the APD3212/NCP3218/NCP3218G is optimized for converting the notebook battery voltage into the core supply voltage required by high performance Intel processors. An internal 7?bit DAC is used to read a VID code directly from the processor and to set the CPU core voltage to a value within the range of 0.3 V to 1.5 V. The APD3212/NCP3218/NCP3218G is programmable for 1?, 2?, or 3?phase operation. The output signals ensure interleaved 2? or 3?phase operation.

The APD3212/NCP3218/NCP3218G uses a multimode architecture run at a programmable switching frequency and optimized for efficiency depending on the output current requirement. The APD3212/NCP3218/NCP3218G switches between single? and multi?phase operation to maximize efficiency with all load conditions. The chip includes a programmable load line slope function to adjust the output voltage as a function of the load current so that the core voltage is always optimally positioned for a load transient. The APD3212/NCP3218/NCP3218G also provides accurate and reliable short?circuit protection, adjustable current limiting, and a delayed power?good output. The IC supports On?The?Fly (OTF) output voltage changes requested by the CPU.

The APD3212/NCP3218/NCP3218G are specified over the extended commercial temperature range of ?40°C to 100°C. The ADP3212 is available in a 48?lead QFN 7x7mm 0.5mm pitch package. The NCP3218/NCP3218G is available in a 48?lead QFN 6x6mm 0.4mm pitch package. ADP3212/NCP3218 has 1.1 V Vboot Voltage, while NCP3218G has 987.5 mV Vboot Voltage. Except for the packages and Vboot Voltages, the APD3212/NCP3218/ NCP3218G are identical. APD3212/NCP3218/NCP3218G are Halogen?Free, Pb?Free and RoHS compliant.

特性 Features

? Single?Chip Solution

? Fully Compatible with the Intel? IMVP?6.5? Specifications

? Selectable 1?, 2?, or 3?Phase Operation with Up to 1 MHz per Phase Switching Frequency

? Phase 1 and Phase 2 Integrated MOSFET Drivers

? Input Voltage Range of 3.3 V to 22 V

? Guaranteed ±8 mV Worst?Case Differentially Sensed Core Voltage Error Over Temperature

? Automatic Power?Saving Mode Maximizes Efficiency with Light Load During Deeper Sleep Operation

? Active Current Balancing Between Output Phases

? Independent Current Limit and Load Line Setting Inputs for Additional Design Flexibility

? Built?In Power?Good Blanking Supports Voltage Identification (VID) On?The?Fly (OTF) Transients

? 7?Bit, Digitally Programmable DAC with 0.3 V to 1.5 V Output

? Short?Circuit Protection with Programmable Latchoff Delay

? Clock Enable Output Delays the CPU Clock Until the Core Voltage is Stable

? Output Power or Current Monitor Options

? 48?Lead QFN 7x7mm (ADP3212), 48?Lead QFN 6x6mm (NCP3218/NCP3218G)

? Vboot = 1.1 V (ADP3212/NCP3218)

Vboot = 987.5 mV (NCP3218G)

? These are Pb?Free Devices

? Fully RoHS Compliant

Applications

? Notebook Power Supplies for Next?Generation Intel Processors