参数资料
| 型号： | CDB150X-01-Z |
| 厂商： | Cirrus Logic Inc |
| 文件页数： | 14/16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
5.15
Summary of Equations
Eq. #
Equation
Variables/Recommended Values
2 V link – ? V in ? min ? ? 2 ?
2 ? f max ? L B ? V link
1
P o = ? ? ? ? ? V in ? min ? ? ? ---------------------------------------------------------
P o
?
Rated output power of the system.
Efficiency of the boost converter (estimated as
100% by the PFC algorithm).
P o = ? ? ? ? ? 90Vrms ? ? -------------------------------------------------------------
2
2 400V – ? 90Vrms ? 2 ?
2 ? 70kHz ? L B ? 400 V
V in(min) Minimum RMS line voltage is 90Vrms,
measured after the rectifier and EMI filter.
V link
Nominal PFC output voltage must be 400V.
L B = ? ? ? ? ? 90Vrms ? ? -------------------------------------------------------------
R IFB = ----------------------------- = -------------------------------
3
4
5
6
2 400V – ? 90Vrms ? 2 ?
2 ? 70kHz ? P o ? 400 V
V link – V DD 400V – V DD
I ref 129 ? A
R IAC = R IFB
f c = 1 ? ? 2 ? ? R3 ?? R4 ? C p ?
f max
L B
?
R IAC
R IFB
I ref
Maximum switching frequency is 70kHz.
Boost inductor specified by rated power
requirement.
Margin factor to guarantee rated output power
(P o ) against boost inductor tolerances.
Value of the IAC pin sense resistor(s).
Value of the IFB pin sense resistor(s).
Value of the fixed, internal reference current.
= 8 ms + ------------ ? 128 V – V BP ? th ? ? + 56 ms
7
T Brownout
8 ms
5V
f c
The cut-off frequency, f c , needs to be 10x the
ringing frequency or f c = 10MHz.
C p
Capacitance at the ZCD pin. C p <10pF.
8
V OVP = R IFB ? I OVP + V DD
Boost Inductor Peak Current
V BP(th)
C out
Brownout threshold voltage. V BP(th) = 94.8V.
Value of the output capacitor in mF.
4 ? P O
9
I LB ? pk ?
= --------------------------------------------
? ? V in ? min ? ? 2
f line(min) Minimum line frequency.
P O
V in ? min ? ? ?
10
Boost Inductor RMS Current
I LB ? rms ? = ------------------------------
V DD
V OVP
IC Supply Voltage.
OVP threshold.
V link Voltage Ripple
? V link ? rip ? = ------------------------------------------------------------------------
14
11
P O
2 ? ? f line ? min ? ? V link ? C out
I OVP
Current into the IFB pin.
DS927F4
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