参数资料
| 型号： | IR3508ZMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 20MLPQ |
| 标准包装： | 1 |
| 系列： | * |
IR3508Z
share loop is much slower than that of the voltage loop and the two loops do not interact. For proper current sharing the
output of current sense amplifier should not exceed (VCCL-1.4V) under all operating condition.
IR3508Z THEORY OF OPERATION
Block Diagram
The Block diagram of the IR3508Z is shown in Figure 5, and specific features are discussed in the following
sections.
PSI_SY NC
CLKIN
PHSIN
D
CLK Q
.
.
.
CLK Q
D
PHASE DELAY DFF
GATEH
PHSOUT
BOOST
EAIN
PWM COMPARATOR
EAIN
-
+
PWM LATCH U183
D Q
PWM_CLK
CLK Q
PWMQ
.
.
.
.
.
DRIVER
GATEH
RESET
DOMINANT
DFFRSH
GATEH NON-
OVERLAP
LATCH
Q
S
GATEH NON-
OVERLAP
COMPARATOR
-
SW
R
VCC
RMPOUT
PHSIN
VCC
CALIBRATION
DACIN-SHARE_ADJ
VCCL
PWM RAMP
GENERATOR
BODY BRAKING
PWM RESET
ANTI-BIAS
LATCH
D
Q
CLK
PSI_SY NC
SET
DOMINANT
GATEL NON-
OVERLAP
LATCH
Q
S
R
SET
+
1V
GATEL NON-
OVERLAP
COMPARATOR
1V
COMPARATOR
-
DOMINANT
EAIN
100mV
+
NEGATIVE
GATEL
DRIVER
VCCL
DACIN +
-
SHARE_ADJ
200mV
OVP
COMPARATOR
VCCL
-
CURRENT
LATCH
PSI_SYNC
GATEL
PGND
DEBUG OFF
(LOW=OPEN)
0.8V
+
RESET
DOMINANT
Q
R
S
SYNCHRONOUS RECTIFICATION
DISABLE COMPARATOR
0.15V
3K
IOUT
SHARE
ADJUST
AMPLIFIER
NEGATIVE CURRENT
COMPARATOR
-
+
IROSC
-
+
CSAOUT
+
CURRENT SENSE
AMPLIFIER
-
X32.5
+
DEBUG
COMPARATOR
CSIN-
CSIN+
DACIN
CALIBRATION
DACIN
+
X
0.75
CALIBRATION
LGND
PSI_SY NC
1V
Q
D
CLK
VCCL
8CLK
Q D
CLK
VCCL
IROSC
PHSIN
(CLKIN for 1-PHASE)
PSI
COMPARATOR
-
500K
PSI
and activating Body Braking . The IR3508Z Body Braking
comparator detects the low signal at the EAIN and
+
610mV
510mV
Figure 5: Block diagram
Tri-State Gate Drivers
The gate drivers are design to provide a 2A source and sink peak current (Bottom gate driver can sink 4A). An
adaptive non-overlap circuit monitors the voltage on the GATEH and GATEL pins to prevent MOSFET shoot-
through current and minimizing body diode conduction. The non-overlap latch is added to eliminate erroneous
triggering caused by the switching noise. A fault condition is communicated to the phase IC via the control IC’s error
amplifier without an additional dedicated signal line. The error amplifier’s output is driven low in response to any
fault condition detected by the controller, such as VCCL under voltage or output overload, disabling the phase IC
TM TM
drives the bottom gate output low. This tri-state operation prevents negative inductor current and negative output
voltage during power-down.
Page 11 of 19
Jan 09, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3510 | 制造商:IRF 制造商全称:International Rectifier 功能描述:HOT-SWAP N+1 REDUNDANT XPHASETM CONTROL IC |
| IR3510MPBF | 功能描述:IC XPHASE CONTROL 32-MLPQ RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:XPhase™ 应用说明:Ultrasound Imaging Systems Application Note 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:37 系列:- 应用:医疗用超声波成像，声纳 电流 - 电源:- 电源电压:2.37 V ~ 6 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:56-WFQFN 裸露焊盘 供应商设备封装:56-TQFN-EP（8x8） 包装:管件 |
| IR3510MTRPBF | 功能描述:热插拔功率分布 HOT-SWAP N+1 XPHASE CTRL IC RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube |
| IR3513MTRPBF | 功能描述:开关变换器、稳压器与控制器 2 CH OR 2 PHASE SYNC PWM CNTRLR RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IR3513XMTRPBF | 功能描述:功率驱动器IC 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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