参数资料
| 型号： | CDB150X-01-Z |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 10/16页 |
| 文件大小： | 0K |
| 描述： | DEVELOPMENT BOARD FOR CS1501 |
| 设计资源： | CS150x/160x PCB Layout Guidelines Boost Inductance vs. Inductor Size |
| 特色产品： | CS1501/CS1601 Power Factor Correction IC Controllers |
| 标准包装： | 1 |
| 主要目的： | 电源管理，功率因数校正 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | CS1501 |
| 主要属性： | 400V，90W 输出 |
| 次要属性： | 90 ~ 265 VAC 通用输入 |
| 已供物品： | 板 |
| 其它名称： | 598-1911 |
CS1501
5.3 Burst Mode
Burst mode is used to improve system efficiency when the
Solving Equation 2 for the PFC boost inductor, L B , gives the
following equation:
L B = ? ? ? ? ? 90V ? ? -------------------------------------------------------------
system output power (P o ) is <5% of nominal. Burst mode is
implemented by intermittently disabling the PFC over a full
half-line period under light-load conditions, as shown in
2 400V – ? 90V ? 2 ?
2 ? 70kHz ? P o ? 400V
[Eq.3]
If a value of the boost inductor other than that obtained from
P o
[W]
Burst Threshold
Burst Mode
Equation 3 above is used, the total output power capability
and the minimum input voltage threshold will differ according
to Equation 2. Note that if the input voltage drops below
90Vrms and the inductance value is <L B , the link voltage V link
will drop below 400V and fall out of regulation.
Active
t [ms]
L < L B ? ?
V in
[V]
V in
PFC
Disable
FET
V gs
L = L B
L > L B ? ?
t [ms]
Figure 14. Burst Mode
5.4 Output Power and PFC Boost Inductor
In normal operating mode, the nominal output power is
estimated by the following equation:
90 265
V AC(rms)
Figure 15. Relative Effects of Varying Boost Inductance
5.5 PFC Output Capacitor
2 V link – ? V in ? min ? ? 2 ?
2 ? f max ? L B ? V link
P o = ? ? ? ? ? V in ? min ? ? ? ---------------------------------------------------------
where:
[Eq.1]
The value of the PFC output capacitor needs to be selected
based upon voltage ripple and hold-up requirements. To
ensure system stability with the digital controller, the
recommended value of the capacitor is within the range of
0.5 ? F/watt to 2.0 ? F/watt with a V link voltage of 400V.
P o
?
rated output power of the system
efficiency of the boost converter (estimated as 100%
by the PFC algorithm)
5.6 Output IFB Sense and Input IAC Sense
A current proportional to the PFC output voltage, V link , is
supplied to the IC on pin IFB and is used as a feedback control
R6
V in(min) minimum RMS line voltage is 90V, measured after
the rectifier and EMI filter
V link nominal PFC output voltage (must be 400V)
f max maximum switching frequency is 70kHz
L B boost inductor specified by rated power requirement
? <1 margin factor to guarantee rated output power (P o )
against boost inductor tolerances.
Equation 1 is provided for explanation purposes only. Using
substituted required design values for V link and f max gives the
following equation:
signal. This current is compared against an internal
fixed-value reference current.
The ADC is used to measure the magnitude of the I IFB current
through resistor R IFB . The magnitude of the I IFB current is then
compared to an internal reference current (I ref ) of 129 ? A.
V link
R5
I FB R IFB
V DD
8
CS1501
P o = ? ? ? ? ? 90V ? ? -------------------------------------------------------------
2 400V – ? 90V ? 2 ?
2 ? 70kHz ? L B ? 400V
[Eq.2]
IFB
1
15k
24k
ADC
I ref
Changing the value for the V link voltage is not recommended.
10
Figure 16. IFB Input Pin Model
DS927F4
相关PDF资料 |
PDF描述 |
|---|---|
| CDB1601-120W-Z | DEVELOPMENT BOARD FOR CS1601 |
| CDB35L00 | DEVELOPMENT BOARD FOR CS35L0X |
| CDB4207 | BOARD EVALUATION FOR CS4207 |
| CDB4245 | BOARD EVAL FOR CS4245 CODEC |
| CDB42L55 | BOARD EVAL FOR CS42L55 CODEC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CDB15FC801GO3 | 功能描述:云母电容器 800PF 300V 2% RoHS:否 电容:100 pF 容差:5 % 电压额定值:300 V 工作温度范围:- 55 C to + 125 C 温度系数:0 PPM / C, 70 PPM / C 端接类型:Radial 封装 / 箱体: 产品:Mica Standard Dipped Capacitors 制造商:Cornell Dubilier |
| CDB15FD431GO3 | 制造商:Cornell Dubilier Electronics 功能描述:MICA CAPACITOR |
| CDB15FD471GO3 | 功能描述:云母电容器 470PF 500V 2% RoHS:否 电容:100 pF 容差:5 % 电压额定值:300 V 工作温度范围:- 55 C to + 125 C 温度系数:0 PPM / C, 70 PPM / C 端接类型:Radial 封装 / 箱体: 产品:Mica Standard Dipped Capacitors 制造商:Cornell Dubilier |
| CDB15FD481GO3 | 功能描述:云母电容器 480UF 500V 2% RoHS:否 电容:100 pF 容差:5 % 电压额定值:300 V 工作温度范围:- 55 C to + 125 C 温度系数:0 PPM / C, 70 PPM / C 端接类型:Radial 封装 / 箱体: 产品:Mica Standard Dipped Capacitors 制造商:Cornell Dubilier |
| CDB-15PF | 制造商:HRS 制造商全称:HRS 功能描述:CD CRIMP TYPE CONNECTOR |
发布紧急采购，3分钟左右您将得到回复。