参数资料
型号: IR3514MTRPBF
厂商: International Rectifier
文件页数: 38/46页
文件大小: 0K
描述: IC XPHASE3 CONTROL HYBRD 40-MLPQ
产品变化通告: (EP) Parts Discontinuation 25/May/2012
标准包装: 1
系列: XPhase3™
应用: 处理器
安装类型: 表面贴装
封装/外壳: 40-MLPQ
供应商设备封装: 40-MLPQ(6x6)
包装: 标准包装
产品目录页面: 1383 (CN2011-ZH PDF)
其它名称: IR3514MTRPBFDKR
Output Impedance: R O =0.32 m ?
Output Inductors: L1=120 nH, L2=220 nH, R L = 0.5m ?
CHARACTERISTICS Table. For switching frequency of 500kHz per phase, choose R OSC =23.2k ? 
IR3514
DESIGN EXAMPLE – AMD FIVE - ONE PHASE DUE OUTPUT CONVERTER (FIGURE 17)
SPECIFICATIONS
Input Voltage: V I =12 V
DAC Voltage: V DAC =1.2 V
No Load Output Voltage Offset for output1: V O_NLOFST =15 mV
Output1 Current: I O1 =95 ADC
Output2 Current: I O1 =20 ADC
Maximum Output1 Current: I OMAX1 =120 ADC
Maximum Output1 Current: I OMAX2 = 26 ADC
Dynamic VID Slew Rate: SR=3.25mV/uS
Over Temperature Threshold: T MAX =115 oC
POWER STAGE
Phase Number: n1=6, n2=1
Switching Frequency: f SW =550 kHz
Output Capacitors: POSCAPs, C=470uF, R C = 8m ?  1XPEHU & n1=9, Cn2=5
IR3514 EXTERNAL COMPONENTS
Oscillator Resistor Rosc
Once the switching frequency is chosen, R OSC can be determined from the equation in the ELECTRICAL
Soft Start Capacitor C SS/DEL
Determine the soft start capacitor from the required soft start time.
C SS / DEL
TD 2 * I CHG
Vboot
2 * 10 3 * 50 * 10
1 . 0
6
0 . 1 uF
The soft start delay time is
TD 1
C SS / DEL * 1. 1
I CHG
0 . 1 * 10 6 * 1. 1
50 * 10 6
2 . 2 mS
The VR ready delay time is
TD 3
C SS / DEL * (3 . 92   V boot   1 . 1)
I CHG
0 .1 * 10 6 * (3 . 92   1   1 .1)
62 * 10 6
3 . 6 mS
The maximum over current fault latch delay time is
t OCDEL
2 . 5 *
C SS / DEL * 0 .12
I DISCHG
2 . 5 *
0. 1 * 10 6 * 0. 12
62 * 10 6
0 . 638 mS
Page 38 of 46
10/30/2007
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