参数资料
型号: IR3502MTRPBF
厂商: International Rectifier
文件页数: 18/39页
文件大小: 0K
描述: IC XPHASE3 CONTROLLER 32-MLPQ
标准包装: 1
系列: XPhase3™
应用: 处理器
电流 - 电源: 8mA
电源电压: 8 V ~ 16 V
工作温度: 0°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘
供应商设备封装: 32-MLPQ(5x5)
包装: 标准包装
产品目录页面: 1383 (CN2011-ZH PDF)
其它名称: IR3502MTRPBFDKR
IR3502
VCC
(12V)
ENABLE
VID
1.1V
VDAC
4.0V
3.92V
3V
1.4V
SS/DEL
EAOUT
VOUT
VRRDY
START DELAY (TD1)
SOFT START
TIME (TD2)
VID SAMPLE
TIME (TD3)
VRRDY DELAY
TIME (TD4+TD5)
NORMAL OPERATION
TD4
TD5
Figure 9 Start-up sequence of converter with boot voltage
Current Monitor (IMON)
The control IC generates a current monitor signal IMON using the VDRP voltage and the VDAC reference, as
shown in Figure 10. This voltage is thermally compensated for the inductor DCR variation. The voltage at this pin
reports the average load current information without being referenced to VDAC. The slope of the IMON signal with
respect to the load current can be adjusted with the resistors RTCMP2 and RTCMP3. The IMON signal is clamped
at 1.03V in order to facilitate direct interfacing with the CPU.
Control IC
VDAC
Buffer
+
VDAC
-
100k
200k
-
VDRP
Buffer
+
IIN
From Phase ICs
Thermal
Comp
Amplifier
+
-
VDRP
RTCMP1
RTCMP2
RTHERM
VN
RTCMP3
DAC_BUFF
200k
200k
-
1.03
IMON
VDRP
200k
+
0
200k
50mV
Figure 10 Current report signal (IMON) implementation
Page 18 of 39
July 28, 2009
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