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参数资料
| 型号： | IR2159STR |
| 厂商： | International Rectifier |
| 文件页数： | 21/25页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST CONTROL DIM 16-SOIC |
| 标准包装： | 2,500 |
| 类型： | 镇流器控制器 |
| 频率： | 25 ~ 95 kHz |
| 电流 - 电源： | 10mA |
| 电源电压： | 12.5 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
IR2159/IR21591 (S)
detection comparator for 400ns after LO goes 'high'
(Figure 15).
V CS
Switching
Noise
V BUS (+)
t
IR2159
16
HO
Q2
LO
Half
Bridge
Driver
15
VS
Half
Bridge
Output
I LOAD
J B L A N K
Dimming
Range
LO
11
Q2
FAULT
LOGIC
1.6V
CS
R1
Figure 15, Current sense timing diagram.
10
RCS
PHASE
CONTROL
400ns
BLANK
12
COM
Fault Mode (FAULT)
Load
V BUS (-)
Return
During dimming, the peak current regulation circuit
active during preheat and ignition is disabled.
Should non-zero voltage switching at the output
Figure 14, Current sensing circuitry.
The internal blank time reduces the dimming range
slightly (Figure 15) when operating at minimum
phase shift (maximum lamp power). The external
programming resistor on pin MAX must be
selected such that the minimum phase shift is
set a safe margin away from the blank time. A
series resistor (R1) is required to limit the amount
of current flowing out of pin CS when the voltage
across RCS goes below -0.7V. A filter capacitor
at pin CS may be required due to other possible
asynchronous noise sources present in the ballast
system.
of the half-bridge occur (Figure 16), high current
spikes will result. A lamp filament failure, lamp
end-of-life, lamp removal, or a deadtime shorter
than what is required for commutation, can all
cause hard-switching.
LOAD
REMOVAL
HO
LO
VS
t
V CS
1.6V
t
NORMAL
OPERATION
HARD
SWITCHING
FAULT
Figure 16, hard-switching with latch off
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| IR2161 | 制造商:International Rectifier 功能描述: |
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| IR2161STR | 制造商:International Rectifier 功能描述: 制造商:International Rectifier 功能描述:Halogen Converter Control IC in a 8-lead SOIC package. Features Auto Resetting |
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