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參數(shù)資料
| 型號： | IRS2166DSTRPBF |
| 廠商： | International Rectifier |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | PFC + BALLAST CONTROL IC |
| 中文描述： | PFC的鎮(zhèn)流器控制IC |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 513K |
| 代理商： | IRS2166DSTRPBF |
IRS2166D(S)PbF
www.irf.com
Page 15
+
+
=
1475
51
R
.
2
1
PH
T
PH
T
T
PH
R
R
R
C
f
[Hz] (5)
or
=
1
T
C
[
] (6)
2892
02
.
2892
02
.
1
PH
T
T
PH
T
PH
f
R
R
f
C
R
Step 4: Program Preheat Time
The preheat time is defined by the time it takes for the
capacitor on pin CPH to charge up to 12 V. An internal
current source of 3.6 μA (I
) flows out of pin CPH. The
preheat time is therefore given as:
6
6
e
C
t
PH
PH
=
or
385
.
=
e
t
C
PH
PH
[s] (7)
6
[F] (8)
Step 5: Program Maximum Ignition Current
The maximum ignition current is programmed with the
external resistor R
CS
and an internal threshold of 1.20 V.
This threshold determines the over-current limit of the
ballast, which can be exceeded when the frequency
ramps down towards resonance during ignition and the
lamp does not ignite. The maximum ignition current is
given as:
VCSTH
I
=
CS
IGN
R
+
[A] (9)
or
IGN
CS
I
VCSTH
R
+
=
[
] (10)
PFC Design Equations
Step1:
Calculate
PFC inductor value:
VBUS
L
PFC
=
VBUS
P
f
VAC
VAC
OUT
MIN
MIN
MIN
2
)
2
(
2
η
[H]
(1)
where,
VBUS
=
DC bus voltage
VAC
=
Minimum rms AC input voltage
η
=
PFC efficiency (typically 0.95)
f
=
Minimum PFC switching frequency at minimum
AC input voltage
P
=
Ballast output power
Step 2:
Calculate
peak PFC inductor current:
MIN
MIN
OUT
η
=
MIN
OUT
P
PK
VAC
i
2
2
[A] (2)
Note: The PFC inductor must not saturate at
PK
the specified ballast operating temperature range. Proper
core sizing and air-gapping should be considered in the
inductor design.
Step 3:
Calculate
maximum on-time:
i
over
η
=
2
MIN
2
PFC
OUT
P
ON
VAC
L
t
MAX
[s] (3)
Step 4:
Calculate
maximum COMP voltage:
6
9
=
E
t
V
MAX
ON
MAX
COMP
[V] (4)
Step 5: Select zener diode D
COMP
value:
COMP
D
zener voltage
≈
MAX
COMP
V
[V] (5)
Step 6: Calculate resistor R
SUPPY
value:
VAC
R
SUPPLY
=
IQCCUV
PK
MIN
10
[
] (6)
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| IRS21681DSPBF | 制造商:International Rectifier 功能描述:ADVANCED PFC AND BALLAST CONTROL IC - Rail/Tube 制造商:International Rectifier 功能描述:IC LIGHT BALLAST CONTROL |
| IRS21681DSTRPBF | 功能描述:開關變換器、穩(wěn)壓器與控制器 Advanced PFC & Ballast Cntrl IC RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關頻率:1 MHz 工作溫度范圍: 安裝風格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IRS2168DPBF | 功能描述:功率驅(qū)動器IC Advanced PFC & Ballast Cntrl IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IRS2168DSPBF | 功能描述:功率驅(qū)動器IC ADVANCED PFC BALLAST CTRL IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IRS2168DSPBF | 制造商:International Rectifier 功能描述:MOSFET Driver IC |
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