参数资料
型号: IR3080MPBF
厂商: International Rectifier
文件页数: 12/41页
文件大小: 0K
描述: IC PHASE CONTROLLER 32MLPQ
标准包装: 5
系列: XPhase™
应用: 处理器
电流 - 电源: 11mA
电源电压: 9.5 V ~ 14 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: 剪切带 (CT)

IR3080 PbF
IR3080 THEORY OF OPERATION
Block Diagram
The Block diagram of the IR3080 is shown in Figure 6, and specific features are discussed in the following sections.
VCC
9.1V
8.9V
+
-
-
START
STOP
+
VCC UVLO
COMPARATOR
VID DELAY
COMPARATOR
FAULT
LATCH
S
VIDPGD
PWRGD
DISCHARGE
VIDDEL
+
-
+
COMPARATOR
R
IVTTDEL
0.2V
ICHG
70uA
OFF
66uA
+
-
90mV
4V
-
-
+
DELAY
COMPARATOR
OVER
CURRENT
OVER-CURRENT
COMPARATOR
-
+
VDRP
AMP
VDRP
IIN
OCSET
SS/DEL
IDISCHG
6uA
ON
SS/DEL
DISCHARGE
1.3V
SOFTSTART
CLAMP
DISABLE
ERROR
AMP
EAOUT
FB
VIDPWR
IROSC
IROSC
VID5
VID0
VID1
VID2
VID3
IROSC
IROSC
IROSC
IROSC
VID
CONTROL
VID = 11111X
VID STEP-DOWN
VID DAC OUTPUT
+
1.2V
-
VCCVID
REGULATOR
VCCVID
VIDFB
VDAC
VID4
IROSC
-
IROSC
IROSC
VCCVID
BBFB
VOSNS-
IROSC
1.1V
+
COMPARATOR
LGND
VBIAS
+
RMPOUT
ROSC
50%
DUTY
CYCLE
RAMP GENERATOR
5.0V
1.0V
VBIAS
IROSC
CURRENT
SOURCE
GENERATOR
VBIAS
REGULATOR
ROSC
BUFFER
AMP
-
6.85V
IOCSET
IROSC
VOLTAGE
PROPORTIONAL
TO ABSOLUTE
TEMPERATURE
IROSC
+
-
IFB
+
START
STOP
-
VRHOT
COMPARATOR
VRHOT
HOTSET
Figure 6. IR3080 Block Diagram
VID Control
A 6-bit VID voltage compatible with VR 10, as shown in Table 1, is available at the VDAC pin. A detailed block
diagram of the VID control circuitry can be found in Figure 7. The VID pins are internally pulled up to VIDPWR pin
through 700 ? resistors. The VID input comparators, with 0.6V reference, monitor the VID pins and control the 6 bit
Digital-to-Analog Converter (DAC) whose output is sent to the VDAC buffer amplifier. The output of the buffer
amplifier is the VDAC pin. The VDAC voltage is post-package trimmed to compensate for the input offsets of the
Error Amplifier to provide a 0.5% system set-point accuracy. The actual VDAC voltage does not determine the
system accuracy and has a wider tolerance.
Page 12
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IR3080MPBF 制造商:International Rectifier 功能描述:Controller IC Package/Case:32-MLPQ
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