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参数资料
| 型号： | QPO-1L |
| 厂商： | Vicor Corporation |
| 元件分类： | DC/DC变换器 |
| 英文描述： | Output Ripple Attenuation SiP |
| 中文描述： | 输出纹波衰减的SiP |
| 文件页数： | 3/8页 |
| 文件大小： | 144K |
| 代理商： | QPO-1L |
Set your site on PICOR at www.picorpower.com
PRELIMINARY
Vicor Corp. Tel: 800-735-6200, 978-470-2900 Fax: 978-475-6715
QPO-1 Data Sheet
Page 3 of 8
Application Notes
Figure 1—Typical Configuration using Remote Sensing
Figure 2—Typical Configuration using Trim Control
RHR
Cco
15uF
QPOOUT
9
SLOPE
ADJ
2
7
SC SET 6
CESR 5
8
10
17
VREF
3
GND
1
SC
16
PEAKIN
15
14
18
13
QPOIN
12
11
REFGND
4
GND
19
GND
20
QPO-1
RSA
Load
Cps*
Rps
+
–
{
10
IN*
20k** 4.7uF**
1W
Module
+ OUT
+ Sense
– Sense
Module
– OUT
Trim
C
SC*
*Optional Component
See Description
**Required only for
engineering samples
Qp*
RHR
R
SS
Cco
15uF
SLOPE
ADJ
2
SC SET 6
CESR
5
VREF
3
GND
1
SC
16
REFGND
4
GND
19
GND
20
QPO-1
RSA
Load
+
–
IN*
C
SC*
Module
+ OUT
Trim
Module
– OUT
QPOOUT
9
7
8
10
17
PEAKIN
15
14
18
13
QPOIN
12
11
{
*Optional Component
See Description
20k** 4.7uF**
**Required only for
engineering samples
Functional Description
The QPO-1 is an active power filter that provides attenuation
of power supply output PARD. The measured attenuation
performance over frequency is shown in Figure 3 at output
voltage conditions of 3.3 and 28 Vdc. The user can select
and optimize the attenuation versus power dissipation by
setting the headroom voltage of the active loop.
The conditions in Figure 3 were measured with a low current
headroom setting of 375mV with approximately 100mV
peak-to-peak ripple voltage on the input to the QPO-1. The
remote sense circuit configuration was used as shown in
Figure 1 with the peak detector function enabled. Some
power supplies need to sense the output ripple for proper
operation. Cps couples the unfiltered ripple back to the sense
input while Rps provides the DC feedback to the power
supply from the load.
Typical improvement in output noise and transient
performance with a 3.3V converter is shown in Figure 4.
This measured data demonstrates the reduction in noise and
ripple at the output of the QPO-1 versus the source output as
well as the transient capability stepping from 1 to 10A
load current - the maximum current rating. This particular
converter has sufficient output capacitance and response
time to load changes such that no additional capacitance,CIN,
is needed on the input of the QPO-1 to reach a 10A level and
still maintain the output within ±50mV.
Ch1: QPOIN
Ch4: QPOOUT
Ch3: Load Current – 10A peak, pulse width = 400S
Load Current Static = 1A
Load Current Transient = 9A
Headroom Voltage @ 100mA = 400mV
Attenuation VS Frequency
-70
-60
-50
-40
-30
-20
-10
0
1.00E+02
1.00E+03
1.00E+04
1.00E+05
1.00E+06
Frequency (Hz)
Attenuation
(dB)
28V 10A
3.3V 10A
Figure 3— Attenuation vs. Frequency
Figure 4 – Transient Response using a Vicor
3.3V Half Brick Converter
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| QPO-1Q | 制造商:VICOR 制造商全称:Vicor Corporation 功能描述:Output Ripple Attenuation SiP |
| QPO-2EVAL1 | 制造商:VICOR 制造商全称:Vicor Corporation 功能描述:Evaluation Board for QPO-2 Active Output Filter |
| QPO-2-EVAL1 | 功能描述:EVALUATION BOARD FOR QPO-2 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:Picor®, QUIETPOWER® 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源 |
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