参数资料
| 型号： | IR3507ZMTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 20-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 4mA |
| 电源电压： | 8 V ~ 28 V |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 供应商设备封装： | 20-MLPQ（4x4） |
| 包装： | 带卷 (TR) |
IR3507Z
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 note exceed (VCCL-1.4V) under all operating condition.
IR3507Z THEORY OF OPERATION
Block Diagram
The Block diagram of the IR3507Z is shown in Figure 5, and specific features are discussed in the following
sections.
CLKIN
CLK Q
D
GATEH
PHSOUT
Q_100%DUTY
-
RMPOUT
DRIVER
PHSIN
EAIN
PWM COMPARATOR
EAIN
-
PWM LATCH
D Q
PWM_CLK
CLK Q
PWMQ
+
200mV
BOOST
GATEH
+
100% DUTY
LATCH
PWMQ
D
PWM_CLK
CLK Q
Q_100%DUTY
.
.
RESET
DOMINANT
.
GATEH NON-
OVERLAP
LATCH
Q S
GATEH NON-
OVERLAP
COMPARATOR
-
SW
R
VCC
RMPOUT
PHSIN
VCC
CALIBRATION
PWM RAMP
GENERATOR
VCCL
PWM RESET
Q D
CLK
SET
DOMINANT
GATEL NON-
OVERLAP
LATCH
+
1V
GATEL NON-
OVERLAP
COMPARATOR
DACIN-SHARE_ADJ
1V
BODY BRAKING
COMPARATOR
-
ANTI-BIAS
LATCH
Q S
SET R
DOMINANT
EAIN
100mV
+
NEGATIVE
GATEL
DRIVER
VCCL
DACIN +
-
SHARE_ADJ
200mV
OVP
COMPARATOR
VCCL
-
CURRENT
LATCH
GATEL
PGND
DEBUG OFF
(LOW=OPEN)
0.8V
+
RESET
DOMINANT
Q
R
S
SYNCHRONOUS RECTIFICATION
DISABLE COMPARATOR
0.15V
IOUT
SHARE
ADJUST
AMPLIFIER
3K
NEGATIVE CURRENT
COMPARATOR
-
+
-
+
CSAOUT
+
CURRENT SENSE
AMPLIFIER
-
X32.5
+
DEBUG
COMPARATOR
CSIN-
CSIN+
DACIN
CALIBRATION
IROSC DACIN
+
X
0.75
CALIBRATION
LGND
PSI ASSERT
1V
Q
D
CLK
VCCL
8CLK
Q D
CLK
IROSC
VCCL
PHSIN
(CLKIN IF 1-PHASE)
PSI
COMPARATOR
-
+
500K
PSI
620mV
550mV
Figure 5: Block diagram
Tri-State Gate Drivers
The gate drivers can deliver up to 2A peak current (4A sink current for bottom driver). An adaptive non-overlap
circuit monitors the voltage on the GATEH and GATEL pins to prevent MOSFET shoot-through current while
minimizing body diode conduction. The non-overlap latch is added to eliminate the error triggering caused by the
switching noise. An enable signal is provided by the control IC to the phase IC without the addition of a dedicated
signal line. The error amplifier output of the control IC drives low in response to any fault condition such as VCCL
under voltage or output overload. The IR3507Z Body Braking TM comparator detects this and drives bottom gate
output low. This tri-state operation prevents negative inductor current and negative output voltage during power-
down.
Page 11 of 19
IR Confidential
April 2, 2009
相关PDF资料 |
PDF描述 |
|---|---|
| IR3508MTRPBF | IC XPHASE3 CTLR 20-MLPQ |
| IR3508ZMTRPBF | IC CTRL XPHASE3 20MLPQ |
| IR3510MPBF | IC XPHASE CONTROL 32-MLPQ |
| IR3513ZMTRPBF | IC CTRL XPHASE3 POL 32-MLPQ |
| IR3514MTRPBF | IC XPHASE3 CONTROL HYBRD 40-MLPQ |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3508 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3508MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3508MTRPBF | 功能描述:开关变换器、稳压器与控制器 XPHASE3 DDR VTT 7V 2A 3 Wire 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 |
| IR3508Z | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3508ZMPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
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