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参数资料
| 型号： | IR2167S |
| 厂商： | International Rectifier |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | PFC Ballast Control. Thermal Overload Protection. Brown Out Protection. Programmable Preheat and Frequency. Programmable Deadtime in a 20 Lead SOIC package |
| 中文描述： | PFC的镇流器控制。热过载保护。欠压保护。可编程预热和频率。可编程死区时间在20引脚SOIC封装 |
| 文件页数： | 25/30页 |
| 文件大小： | 937K |
| 代理商： | IR2167S |
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IR2167(
S
)
www.irf.com
25
Recovery from such a fault condition is accomplished by
cycling either the SD pin or the VCC pin. (See Figure 20).
When a lamp is removed, the SD pin goes high, the fault
latch is reset, and the chip is held off in an unlatched state.
Lamp replacement causes the SD pin to go low again,
reinitiating the startup sequence. The fault latch can also be
reset by the undervoltage lockout signal, if VCC falls below
the lower undervoltage threshold.
Bootstrap Supply Considerations
Power is normally supplied to the high-side circuitry by means
of a simple charge pump from VCC, as shown in Figure 21.
Figure 21 :
Typical bootstrap supply connection
with VCC charge pump from half-bridge output
(shaded area)
A high voltage, fast recovery diode DBOOT (the so-called
bootstrap diode) is connected between VCC (anode) and
VB (cathode), and a capacitor CBOOT (the so-called
bootstrap capacitor) is connected between the VB and VS
leads. During half-bridge switching, when MOSFET Q2 is
on and Q1 is off, the bootstrap capacitor CBOOT is charged
from the VCC decoupling capacitor, through the bootstrap
diode DBOOT, and through Q2. Alternately, when Q2 is off
and Q1 is on, the bootstrap diode is reverse-biased, and the
bootstrap capacitor (which ‘floats’ on the source of the upper
power MOSFET) serves as the power supply to the upper
gate driver CMOS circuitry. Since the quiescent current in
this CMOS circuitry is very low (typically 45
μ
A in the on-
state), the majority of the drop in the VBS voltage when Q1
is on occurs due to the transfer of charge from the bootstrap
capacitor to the gate of the power MOSFET.
Design Equations
Note: The results from the following design equations can
differ slightly from experimental measurements due to IC
tolerances, component tolerances, and oscillator over- and
under-shoot due to internal comparator response time.
Step 1: Program Maximum Ignition Voltage
Maximum lamp voltage is required during ignition. This will
vary depending on the type of lamp, but 1600V is typical for
a T8 lamp. As the frequency decreases from the preheat
frequency to the resonant frequency, the voltage across the
lamp increases. During ignition, only RT along with CT and
DT determine the frequency. RPH and RRUN are not
connected to COM at this time. The value of RT should be
chosen so that the desired ignition voltage is reached. The
RT pin current and timing capacitor charging current are both
approximately:
The value of this current should be kept between 50
μ
A and
500
μ
A. The value for CT is computed as follows:
And the ignition mode frequency is:
T
RT
CT
R
V
I
I
0
=
=
=
td
f
R
C
ign
T
T
2
1
1
(
)
td
C
R
f
T
T
IGN
+
=
2
1
=
td
f
C
R
ign
T
T
2
1
1
rectified
AC
line
1
/
2
Bridge
output
C
VCC
R
SUPPLY
D1
D2
Q2
Q1
C
SNUBBER
V
BUS
return
+V
BUS
D
BOOT
C
BOOT
R
CS
R3
R
GLS
R
GHS
1
2
3
4
5
9
10
20
19
18
17
16
12
11
I
VDC
CPH
RPH
RT
RUN
COMP
ZX
PFC
COM
VCC
VB
VS
HO
VBUS
6
7
8
15
14
13
CT
DT
OC
LO
SD
CS
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相关代理商/技术参数 |
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| IR2167SPBF | 功能描述:IC CTLR BALLAST PFC 20-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 照明，镇流器控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:CCFL 控制器 频率:40 ~ 80 kHz 电流 - 电源:5mA 电流 - 输出:- 电源电压:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) 其它名称:90-3991V+V01 |
| IR2167STRPBF | 功能描述:功率因数校正 IC PFC Ballast Control, Thermal Overload Protection, RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| IR2170 | 功能描述:IC CURRENT SENSE 600V 1MA 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| IR2170S | 功能描述:IC CURRENT SENSE 600V 1MA 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| IR2171 | 制造商:IRF 制造商全称:International Rectifier 功能描述:LINEAR CURRENT SENSING IC |
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