参数资料
| 型号： | NCP5392QMNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 19/30页 |
| 文件大小： | 0K |
| 描述： | IC PHASE CONTROLLER 2/3/4 40-QFN |
| 标准包装： | 2,500 |
| 应用： | 控制器，Intel VR11，VR11.1，AMD CPU |
| 输入电压： | 4.75 V ~ 5.25 V |
| 输出数： | 4 |
| 输出电压： | 0.375 V ~ 1.6 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 带卷 (TR) |
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NCP5392Q
Oscillator and Triangle Wave Generator
A programmable precision oscillator is provided. The
oscillator ’s frequency is programmed by the resistance
connected from the ROSC pin to ground. The user will
usually form this resistance from two resistors in order to
create a voltage divider that uses the ROSC output voltage
as the reference for creating the current limit setpoint
voltage. The oscillator frequency range is 100 kHz per
phase to 1.0 MHz per phase. The oscillator generates up to
4 symmetrical triangle waveforms with amplitude between
1.3 V and 2.3 V. The triangle waves have a phase delay
between them such that for 2-- , 3-- and 4-- phase operation
the PWM outputs are separated by 180, 120, and 90 angular
degrees, respectively.
PWM Comparators with Hysteresis
Four PWM comparators receive an error signal at their
noninverting input. Each comparator receives one of the
triangle waves at its inverting output. The output of each
comparator generates the PWM outputs G1, G2, G3, and G4.
During steady state operation, the duty cycle will center
on the valley of the triangle waveform, with steady state
duty cycle calculated by V out /V in . During a transient event,
both high and low comparator output transitions shift phase
to the points where the error signal intersects the down and
up ramp of the triangle wave.
PROTECTION FEATURES
Power Saving Mode
Upon receiving PSI low command, or VID down with
Auto-- PSI enabled, the NCP5392Q enters power saving
mode with only single phase running. The device operates
in power saving mode to maintain a high power efficiency
and good transient performance.
Undervoltage Lockout
An undervoltage lockout (UVLO) senses the V CC input.
During power-- up, the input voltage to the controller is
monitored, and the PWM outputs and the soft-- start circuit
are disabled until the input voltage exceeds the threshold
voltage of the UVLO comparator. The UVLO comparator
incorporates hysteresis to avoid chattering.
12VMON UVLO and VIN Information
12V UVLO senses the 12V power supply by connecting
divider. During power-up, the 12VMON is monitored and
the PWM outputs and soft-start circuit are disabled until the
voltage exceeds the threshold of its UVLO comparator.
The UVLO comparator incorporates hysteresis to avoid
chattering.
Overcurrent Shutdown
A programmable overcurrent function is incorporated
within the IC. A comparator and latch make up this
function. The inverting input of the comparator is
connected to the ILIM pin. The voltage at this pin sets the
maximum output current the converter can produce. The
ROSC pin provides a convenient and accurate reference
voltage from which a resistor divider can create the
overcurrent setpoint voltage. Although not actually
disabled, tying the ILIM pin directly to the ROSC pin sets
the limit above useful levels - effectively disabling
overcurrent shutdown. The comparator noninverting input
is the summed current information from the VDRP minus
offset voltage. The overcurrent latch is set when the current
information exceeds the voltage at the ILIM pin. The
outputs are pulled low, and the soft-- start is pulled low. The
outputs will remain disabled until the V CC voltage is
removed and re-- applied, or the ENABLE input is brought
low and then high.
Output Overvoltage and Undervoltage Protection and
Power Good Monitor
An output voltage monitor is incorporated. During normal
operation, if the output voltage is 180 mV (typical) over the
DAC voltage, the VR_RDY goes low, the DRVON signal
remains high, the PWM outputs are set low. The outputs will
remain disabled until the V CC voltage is removed and
reapplied. During normal operation, if the output voltage falls
more than 350 mV below the DAC setting, the VR_RDY pin
will be set low until the output voltage rises.
Soft--Start
The VR11 mode ramps V core to 1.1 V boot voltage at a
fixed rate of 0.8 mV/ m S, pauses at 1.1 V for around 500 m S,
reads the VID pins to determine the DAC setting. Then
ramps V core to the final DAC setting at the Dynamic VID
slew rate of up to 12.5 mV/ m S. Typical VR11 soft-- start
sequences are shown in the following graphs (Figure 9 and
10).
it to the 12VMON pin through an appropriate resistor
http://onsemi.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP5392T | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2/3/4-Phase Controller with Light Load Power Saving Enhancement for CPU Applications |
| NCP5392TMNR2G | 功能描述:DC/DC 开关控制器 2/3/4 PHASE CONTROLLER RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| NCP5393 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2/3/4-Phase Controller for CPU Applications |
| NCP5393A | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:2/3/4-Phase Controller for CPU Applications |
| NCP5393AMNR2G | 功能描述:IC PHASE CONTROLLER 2/3/4 48-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
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