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型号： IR2156SPbF
厂商： International Rectifier
英文描述： BALLAST CONTROL IC
中文描述： 镇流器控制IC
文件页数： 17/24页
文件大小： 497K
代理商： IR2156SPBF
IR2156
(S) & (PbF)
www.irf.com
17
5
4
4uA
6
7
CPH
CT
RPH
RT
11
8
COM
LO
M2
R
CS
OSC.
13
HO
M1
12
VS
R
T
R
PH
C
CPH
Half
Bridge
Output
I
LOAD
V
BUS
(+)
V
BUS
(-)
Load
Return
Half-
Bridge
Driver
IR2156
1.3V
S1
S4
Comp 4
10
2
VCC
CS
R1
C
CS
S3
Fault
C
T
oscillate at the preheat frequency with 50% duty
cycle and with a dead-time which is set by the
value of the external timing capacitor, CT, and
internal deadtime resistor, RDT. Pin CPH is
disconnected from COM and an internal 4
μ
A
current source (Figure 3)
Figure 3, Preheat circuitry.
charges the external preheat timing capacitor on
CPH linearly. The over-current protection on pin
CS is disabled during preheat. The preheat
frequency is determined by the parallel
combination of resistors RT and RPH, together
with timing capacitor CT. CT charges and
discharges between 1/3 and 3/5 of VCC (see
Timing Diagram, page 7). CT is charged
exponentially through the parallel combination of
RT and RPH connected internally to VCC through
MOSFET S1. The charge time of CT from 1/3 to
3/5 VCC is the on-time of the respective output
gate driver, HO or LO. Once CT exceeds 3/5 VCC,
MOSFET S1 is turned off, disconnecting RT and
RPH from VCC. CT is then discharged
exponentially through an internal resistor, RDT,
through MOSFET S3 to COM. The discharge time
of CT from 3/5 to 1/3 VCC is the dead-time (both
off) of the output gate drivers, HO and LO. The
selected value of CT together with RDT therefore
program the desired dead-time (see Design
Equations, page 19, Equations 1 and 2). Once
CT discharges below 1/3 VCC, MOSFET S3 is
turned off, disconnecting RDT from COM, and
MOSFET S1 is turned on, connecting RT and
RPH again to VCC. The frequency remains at the
preheat frequency until the voltage on pin CPH
exceeds 13V and the IC enters Ignition Mode.
During the preheat mode, both the over-current
protection and the DC bus under-voltage reset are
enabled when pin CPH exceeds 7.5V.
Ignition Mode (IGN)
The ignition mode is defined as the state the IC
is in when a high voltage is being established
across the lamp necessary for igniting the lamp.
The IR2156 enters ignition mode when the voltage
on pin CPH exceeds 13V.
Figure 4, Ignition circuitry.
Pin CPH is connected internally to the gate of a
p-channel MOSFET (S4) (see Figure 4) that
connects pin RPH with pin RT. As pin CPH
5
4
4uA
6
7
CPH
CT
RPH
RT
11
8
COM
LO
M2
RCS
OSC.
13
HO
M1
12
VS
R
T
R
PH
C
CPH
Half
Bridge
Output
I
LOAD
V
BUS
(+)
V
BUS
(-)
Load
Return
Half-
Bridge
Driver
IR2156
S4
C
T
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相关代理商/技术参数
参数描述
IR2156STR 功能描述:IC BALLAST CONT 600V .5A 14-SOIC RoHS:否 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
IR2156STRPBF 功能描述:功率驱动器IC Ballast Cntrl Prog Preht Tm & Run Freq RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube
IR2157 制造商:IRF 制造商全称:International Rectifier 功能描述:FULLY INTEGRATED BALLAST CONTROL IC
IR2157_07 制造商:IRF 制造商全称:International Rectifier 功能描述:FULLY INTEGRATED BALLAST CONTROL IC
IR21571 功能描述:IC BALLAST CONTROL 16-DIP RoHS:否 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
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