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| 型号： | IRS2168DSTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/21页 |
| 文件大小： | 0K |
| 描述： | IC PFC & BALLAST CONTROL 16-SOIC |
| 标准包装： | 1 |
| 类型： | PFC/镇流器控制器 |
| 频率： | 42.5 ~ 46.5 kHz |
| 电流 - 电源： | 10mA |
| 电流 - 输出： | 260mA |
| 电源电压： | 12.5 V ~ 15.6 V |
| 工作温度： | -25°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： | 标准包装 |
| 配用： | IRPLLNR5-ND - KIT BALLAST UNIV FLUOR 54W TL5 |
| 其它名称： | IRS2168DSTRPBFDKR |
IRS2168D(S)PbF
I. Ballast Section
V C1
Functional Description
Undervoltage Lockout Mode (UVLO)
V UVLO+
VHYST
C VCC
DISCHARGE
INTERNAL VCC
ZENER CLAMP VOLTAGE
The undervoltage lockout mode (UVLO) is defined as the
state the IC is in when V CC is below the turn-on threshold
of the IC. To identify the different modes of the IC, refer to
V UVLO-
DISCHARGE
TIME
CHARGE PUMP
OUTPUT
the State Diagram shown on page 3 of this document. The
IRS2168D undervoltage lockout is designed to maintain
an ultra low supply current of 250 μA (I QCCUV ), and to
guarantee the IC is fully functional before the high- and
low-side output drivers are activated. Figure 1 shows an
efficient supply voltage using the micro-power start-up
current of the IRS2168D together with a snubber charge
pump from the half-bridge output (R VCC , C VCC1 , C VCC2 ,
C SNUB , D CP1 and D CP2 ).
R VCC & C VCC1,2
TIME
CONSTANT
t
Figure 2: V CC supply voltage
When LO and HO are both oscillating, the external
MOSFETs (MHS and MLS) are turned on and off with a
50% duty cycle and a non-overlapping deadtime of 1.6
μs (t d ). The half-bridge output (pin V S ) begins to switch
V RECT (+)
V BUS (+)
HO
R VCC
R HO
between the DC bus voltage and COM. During the
deadtime between the turn-off of LO and the turn-on of
HO, the half-bridge output voltage transitions from COM
16
VS
MHS
to the DC bus voltage at a dV/dt rate determined by the
BSFET
CONTROL
BSFET
15
14
13
12
VB
VCC
COM
C BS
R 2
C VCC1
C VCC2
R 1
D CP2
To Load
C SNUB
snubber capacitor (C SNUB ). As the snubber capacitor
charges, current will flow through the charge pump diode
(D CP2 ) to V CC . After several switching cycles of the half-
bridge output, the charge pump and the internal 15.6 V
IRS2168D
11
10
LO
CS
R LO
R 3
C CS
MLS
R CS
D CP1
Zener clamp of the IC take over as the supply voltage.
Capacitor C VCC2 supplies the IC current during the V CC
discharge time and should be large enough such that
IC COM
V CC does not decrease below UVLO- before the charge
V BUS (-)
Figure 1: Start-up and supply circuitry
Load
Return
pump takes over. Capacitor C VCC1 is required for noise
filtering and must be placed as close as possible and
directly between V CC and COM, and should not be lower
than 0.1 μF Resistors R 1 and R 2 are recommended for
limiting high currents that can flow to V CC from the charge
www.irf.com
The V CC capacitors (C VCC1 and C VCC2 ) are charged by the
current through supply resistor (R VCC ) minus the start-up
current drawn by the IC. This resistor is chosen to set the
desired AC line input voltage turn-on threshold for the
ballast. When the voltage at V CC exceeds the IC start-up
threshold (V CCUV+ ) and the SD pin is below 3.0 V (V SDTH -),
the IC turns on and LO begins to oscillate. The capacitors
at V CC begin to discharge due to the increase in IC
operating current (Fig. 2). The high-side supply voltage,
V B- V S , begins to increase as capacitor C BS is charged
through the internal bootstrap MOSFET during the LO on-
time of each LO switching cycle. When the V B- V S voltage
exceeds the high-side start-up threshold (V BSUV+ ), HO then
begins to oscillate. This may take several cycles of LO to
charge V B -V S above V BSUV+ due to R DSon of the internal
bootstrap MOSFET.
pump during hard-switching of the half-bridge or during
lamp ignition. The internal bootstrap MOSFET and
supply capacitor (C BS ) comprise the supply voltage for
the high side driver circuitry. During UVLO mode, the
high- and low-side driver outputs HO and LO are both
low, the internal oscillator is disabled, and pin CPH is
connected internally to COM for resetting the preheat
time.
Page 11
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| IRS2181 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH AND LOW SIDE DRIVER |
| IRS21814 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGH AND LOW SIDE DRIVER |
| IRS21814MPBF | 功能描述:功率驱动器IC HI LO SIDE DRVR 600V 10 to 20V 1.4A 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 |
| IRS21814MTRPBF | 功能描述:功率驱动器IC Hi&Lw Sd Drvr Sft Trn On Non Invrt 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 |
| IRS21814PBF | 功能描述:功率驱动器IC Hi&Lw Sd Drvr Sft Trn On Non Invrt 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 |
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