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参数资料
| 型号： | IRDC3046 |
| 厂商： | International Rectifier |
| 文件页数： | 1/7页 |
| 文件大小： | 0K |
| 描述： | KIT W/IRU3046 DUAL PWM LDO CTRLR |
| 标准包装： | 1 |
| 其它名称： | *IRDC3046 |
IRDC3046
IRU3046 EVALUATION BOARD USER GUIDE
INTRODUCTION
SPECIFICATION DATA
The IRU3046 IC combines a dual synchronous PWM
controller and a linear regulator controller, providing a
cost-effective, high performance and flexible solution for
multi-output applications. The dual synchronous control-
ler can be configured as 2-independent or 2-phase con-
troller. In 2-phase configuration, the IRU3046 provides
programmable current sharing which is ideal when the
output power exceeds any single input power budget.
IRU3046 provides a separate adjustable output by driv-
ing a switch as a liner regulator. The Eval Board is de-
signed for current sharing mode (see the IRU3046 data
sheet for detail description), the two PWM controllers
provide one single output and the linear regulator pro-
vides the second output.
INPUT/OUTPUT CONNECTIONS
Switcher:
V IN1(MASTER) = 5V
V IN2 (SLAVE) = 12V
V OUT = 1.5V
I OUT = 16A
D V OUT = 75mV
FS = 200KHz
Linear Regulator:
LDO IN = 3.3V
LDO OUT = 2.5V
I OUT = 2A
The following is the input/output connections:
Inputs:
JP1: +5V and Gnd.
JP2: +12V and Gnd.
JP5: LDOIN (3.3V) and Gnd.
Alternative connections:
JP3: ATX Connector for 3.3V, 5V and 12V inputs and
Gnd.
Outputs:
JP4: +VOUT (1.5V) and Gnd.
JP6: +LDOOUT (2.5V) and Gnd.
The connection points is shown in Figure 1. Connect the
power supply cables according to this figure, minimize
wire lengths to reduce losses in the wire. Test point J1,
J2 and J3 provide easy connection for oscilloscope volt-
age probe to monitor the inductor points for each PWM
section and output voltage.
Rev. 1.0
05/22/02
www.irf.com
1
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