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参数资料
| 型号： | IR2167STRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 25/33页 |
| 文件大小： | 0K |
| 描述： | IC PFC BALLAST CTLR 20-SOIC |
| 标准包装： | 1,000 |
| 类型： | PFC/镇流器控制器 |
| 频率： | 41 ~ 47 kHz |
| 电流 - 电源： | 10mA |
| 电源电压： | 11.4 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC（宽型） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页当前第25页第26页第27页第28页第29页第30页第31页第32页第33页
IR2167(S) & PbF
R OC = V CS + ,
5
55E - 6
or
SD
4
V CS + = 55E - 6 ? R OC
CT
rectified
AC line
+V BUS
/ 2 Bridge output
CPH
LO
8
15
VDC
CPH
RPH
RT
RUN
1
2
3
4
5
20
19
18
17
16
HO
VS
VB
VCC
COM
R GHS
C BOOT
D BOOT
R SUPPLY
D1
C VCC
Q1
1
C SNUBBE
R
15
HO-VS
CT
DT
OC
6
7
8
15
14
13
LO
CS
SD
R GLS
R3
Q2
D2
COMP
9
12
PFC
RUN mode
SD mode
Restart
ZX
R OC 10
VBUS
11
R CS
Figure 18: SD lead fault and auto restart
Half-Bridge Current Sensing and Protection
The third pin used for protection is the CS pin, which is nor-
mally connected to a resistor in the source of the lower power
MOSFET, as shown in Figure 19. The CS pin is used to
sense fault conditions such as failure of a lamp to strike,
over-current during normal operation, hard switching, no
load, and operation below resonance. If any one of these
conditions is sensed, the fault latch is set, the oscillator is
disabled, the gate driver outputs go low, and the chip is put
into the micropower mode. The CS lead performs its sens-
ing functions on a cycle-by-cycle basis in order to maximize
ballast reliability.
For the over-current, failure-to-strike, and hard switching fault
conditions, an externally programmable, positive-going CS+
threshold is enabled at the end of the preheat time. The level
of this positive-going threshold is determined by the value of
the resistor ROC. The value of the resistor ROC is determined
by the following formula:
www.irf.com
V BUS return
Figure 19: Half-bridge current sensing circuit connection
(shaded area)
For the under-current and under-resonance conditions, there
is a negative-going CS- threshold of 0.2V which is enabled
at the onset of the run mode. The sensing of this CS-
threshold is synchronized with the falling edge of the LO
output.
Figures 20, 21 and 22 are oscillographs of fault conditions.
Figure 20 shows a failure of the lamp to strike, Figure 21
shows a hard switching condition and Figure 22 shows an
under-current condition.
25
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