IR22771S/IR21771S(PbF)
13
www.irf.com
For this particular PWM scheme another suitable
solution is driving the IR2x771 with a half frequency
SYNC signal (f
SYNC
=f
PWM
/2).
In this case the cut frequency of the input filter is
reduced by half allowing zeroes to be put at f
PWM
multiples (i.e. even and odd harmonics cancellation,
no more computational effort needed by the
controller).
Figure 15: Even harmonic cancellation principle
1.6 Input filter gain setting
G0 and G1 pins are used to change the time
constant of the integrators of the high side input
filter.
To avoid internal saturation of the input filter, G0
and G1 must be connected according to SYNC
frequency as shown in Table 1. A too small time
constant may saturate the internal integrator, while
a large time constant may reduce accuracy.
G0 and G1 do not affect the overall current sensor
gain.
f
PWM
G0 G1
> 16 kHz *
V
B
V
B
16 / 10 kHz
V
S
V
B
10 / 6 kHz
V
B
V
S
< 6 kHz
V
S
V
S
* 40 kHz
Table 1: G0, G1 gain settings
Triangular
Phase voltage
Phase current
Current Mean
Fundamental
harmonic
Fundamental
harmonic
Switching level
Third
harmonic
Third
harmonic
SYNC 1
SYNC 2
Sampling
instant
Sampling
instant
Error
Triangular
Phase voltage
Phase current
Current Mean
Fundamental
harmonic
Fundamental
harmonic
Switching level
Third
harmonic
Stage 1 input:
Input signal
components
(1
st
and 2
nd
harmonic only)
Third
harmonic
SYNC 1
SYNC 2
Sampling
instant
Sampling
instant
Error
Stage 1
output
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
IRU3073CQTR
IC REG DL BCK/LINEAR 16-QSOP
ISL25700FRUZ-TK
IC TEMP SWITCH MFET DRVR 10TQFN
ISL6150IB
IC CTRLR HOT PLUG NEG VOLT 8SOIC
ISL6151IB-T
IC CTRLR HOT PLUG NEG VOLT 8SOIC
ISL6160CB-T
IC CTRLR BULK/AUXILIARY 14-SOIC
ISL6161CB-T
IC CTRLR PWR DISTRIB DUAL 14SOIC
ISL6173DRZA-T
IC CTRLR HOT SWAP DUAL LV 28-QFN
ISL6174IRZ
IC CIRC BREAKER DUAL LV 28-QFN
相关代理商/技术参数
IR2277S
制造商:IRF 制造商全称:International Rectifier 功能描述:Phase Current Sensor IC for AC motor control
IR2277SPBF
功能描述:马达/运动/点火控制器和驱动器 1200V PHASE CURRENT SENSING IC RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
IR2277STRPBF
功能描述:马达/运动/点火控制器和驱动器 1200VPhs Cur Sens IC for AC Mtr Cntrl RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube
IR22GJ
制造商:SGX Sensortech 功能描述:Series 2 Hydrocarbon IR Sensor with temp. sens IC ( IS for mining), Bulk
IR-2-3.3-10
制造商:Vishay Dale 功能描述:Inductor, Iron Core, 3.3uh, 10±%
IR230
制造商:Knoll Systems 功能描述:Peephole Style Infrared Receiver 制造商:KNOLL SYSTEMS 功能描述:IR REPEATER RECEIVER ONLY PEEPHOLE RECEIVER
IR2301
功能描述:IC DRIVER HIGH/LOW SIDE 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - MOSFET，电桥驱动器 - 外部开关 系列:- 标准包装:50 系列:- 配置:高端 输入类型:非反相 延迟时间:200ns 电流 - 峰:250mA 配置数:1 输出数:1 高端电压 - 最大（自引导启动）:600V 电源电压:12 V ~ 20 V 工作温度:-40°C ~ 125°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-DIP 包装:管件 其它名称:*IR2127
IR2301PBF
功能描述:功率驱动器IC Hi&Lw Sd Drvr Soft Trn On NonInvrt Inpt 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