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参数资料
| 型号： | IR3527MTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC CTRL XPHASE3 DUAL 24-MLPQ |
| 标准包装： | 3,000 |
| 系列： | XPhase3™ |
| 应用： | 处理器 |
| 电流 - 电源： | 8mA |
| 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： | 24-MLPQ |
| 供应商设备封装： | 24-MLPQ（4x4） |
| 包装： | 带卷 (TR) |
IR3527
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNIT
PSI Comparator
Rising Threshold Voltage
Falling Threshold Voltage
Hysteresis
Resistance
Floating Voltage
520
400
50
200
800
620
550
70
500
700
650
120
850
1150
mV
mV
mV
N
mV
General
VCC Supply Current
VCC Supply Current
VCCLx Supply Current
BOOSTx Supply Current
DACIN Bias Current
SW Floating Voltage
8V ?9 9&& ? 9
10V ?9 9&& ? 9
4.75V ? 9 ( BOOSTx)-V(SWX) ? 8V
2.2
2.2
3.1
0.5
-3.0
0.1
8.0
4.0
8.0
1.5
-1.5
0.3
12.2
8.0
12.1
3
1
0.4
mA
mA
mA
mA
P A
V
The PWM block diagram of the XPhase3
architecture is shown in Figure 2. Feed-forward voltage mode control
Note 1: Guaranteed by design, but not tested in production
Note 2: VCCL-0.5V or VCC – 2.5V, whichever is lower
SYSTEM THEORY OF OPERATION
PWM Control Method
TM
with trailing edge modulation is used. A high-gain and wide-bandwidth voltage type error amplifier is used for the
voltage control loop. Input voltage is sensed by phase to monitor any changes in amplitude. The PWM ramp slope
will change with the input voltage and automatically compensate for changes in the input voltage. The input voltage
can change due to variations in the silver box output voltage or due to the wire and PCB-trace voltage drop related
to changes in load current.
Frequency and Phase Timing Control
The oscillator is located in the Control IC and the system clock frequency is programmable from 250 kHz to 9 MHZ
by an external resistor. The control IC system clock signal (CLKOUT) is connected to CLKIN of all the phase ICs.
The phase timing of the phase ICs is controlled by the daisy chain loop, where control IC phase clock output
(PHSOUT) is connected to the phase clock input (PHSIN) of the first phase IC, and PHSOUT of the first phase IC is
connected to PHSIN of the second phase IC, etc. and PHSOUT of the last phase IC is connected back to PHSIN of
the control IC.
The switching frequency is set by the Control IC. The clock frequency equals the total number of phases multiplied
by the switching frequency. During power up, the control IC sends out clock signals from both CLKOUT and
PHSOUT pins and detects the feedback at PHSIN pin to determine the phase number and monitor any fault in the
daisy chain loop.
The IR3527 combines 2 Phase ICs in a single package. IR3527 internally connect the PHSOUT1 pin to the PHSIN2
so the firing order is always sequential. Figure 3 shows the phase timing for a four phase converter implemented by
two IR3527 Phase ICs. The dotted lines indicate the PHSOUT1 to PHSIN2 waveform that would be internal to the
IR3527.
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V3.0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3529 | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3529MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:XPHASE3TM PHASE IC |
| IR3529MTRPBF | 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 |
| IR3531A | 制造商:IRF 制造商全称:International Rectifier 功能描述:41 Phase Dual Output Control IC Pre-bias compatible |
| IR3531A-MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:41 Phase Dual Output Control IC Pre-bias compatible |
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