QPO-2L

更新时间： 2024-01-12 05:04:37

品牌	Logo	应用领域
VICOR		射频和微波射频衰减器微波衰减器
页数	文件大小	规格书
12页	290K
描述
QPO-2L Low Voltage Output Ripple Attenuator

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中文翻译

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QPO-2L 技术参数

生命周期：	Obsolete	Reach Compliance Code：	compliant
风险等级：	5.28	其他特性：	LOW NOISE
标称衰减：	30 dB	构造：	COMPONENT
最大工作频率：	0.5 MHz	最小工作频率：	0.001 MHz
最高工作温度：	100 °C	最低工作温度：	-40 °C
射频/微波设备类型：	VARIABLE ATTENUATOR	Base Number Matches：	1

QPO-2L 数据手册

QPO-2L

QuietPower^™

QPO-2L Low Voltage Output Ripple Attenuator

Description

Features of the QPO-2

The QPO-2 output ripple attenuator SiP uses active

filtering to reduce supply output ripple and noise

(PARD) by over 30dB from 1kHz to 500kHz. The

QPO-2 is biased through the VAUX input and filters

an input voltage range of 0.3VDC to 5.5VDC while

supporting load currents as high as 20A. The VAUX

input range is 7V to 12V with a minimum required

difference between VAUX and QPO OUT of 7V.

Output regulation is maintained by using either the

remote sense or the trim adjustment of the power

supply. The product can be used in an open loop

configuration when ripple and noise reduction are

the main objective and load regulation is not as

critical. The QPO-2 architecture improves transient

response and ensures quiet point-of-load regulation

when used with most switching power supplies. The

performance waveform in figure 2 is an example of

the ripple reduction and transient load

improvement the QPO-2 can provide using a 3.3V

brick style converter.

• >30 dB PARD attenuation, 1kHz to 500kHz

• >20 dB PARD attenuation, 50Hz to 500Hz (1)

• 20A rating over a 0.3-5.5Vdc operating range

• Supports precise point-of load regulation

• 90-95% efficiency with load vs. headroom trim

• User selectable performance optimization of the

attenuation, power dissipation & transient load

response

• Peak detector function optimizes headroom for

ripple amplitude variation automatically

• 25 x 25 x 4.5 mm SiP with LGA mounting

• Closed loop control improves transient response

of most DC/DC converters and power supplies

• Reduces required number of output capacitors to

support dynamic loads.

• Patents Pending

Applications

Note 1: For off-line supplies 20dB attenuation can be achieved

down to 50Hz with additional capacitance added from the VREF

pin to REFGND.

•

Distributed Point of Load Power Systems

Sensors Requiring Low Noise Power

Medical Instrumentation

Typical Application

QPO-2 Performance

VAUX

QPO IN (AC)

VAUX

LOAD+

QPO IN

QPO OUT

VOUT+

PEAK IN

CIN*

SENSE+

Rsc

RCP

QPO-2L

RCLAMP

ADJUST

RSL

SC SET

+TRIM

QPO OUT (AC)

CSC

RSA

LOAD CURRENT

SENSE-

VOUT-

RHR

*Optional

LOAD-

Figure 1 – ADJUST/Trim supports applications that don’t

Figure 2 – Typical performance with a 3.3 Volt converter,

require remote sense.

showing 1 to 10 A load step.

Picor Corporation • www.picorpower.com

QPO-2L Data Sheet Rev. 1.1 Page 1 of 12

12 3 4 5 6 7...12

中文翻译

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