IRDC3039EVAL [INFINEON]
IRU3039 EVALUATION BOARD USER GUIDE; IRU3039评估板操作指南
| 型号： | IRDC3039EVAL |
| 厂家： | 
Infineon |
| 描述： | IRU3039 EVALUATION BOARD USER GUIDE |
| 文件： | 总8页 (文件大小：647K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IRDC3039EVAL
IRU3039 EVALUATION BOARD USER GUIDE
INTRODUCTION
SPECIFICATION DATA
The IRU3039 controller IC is designed to provide a syn-
chronous Buck regulator and is targeted for applications
where the cost and size is critical. The IRU3039 oper-
ates with a single input supply up to 20V. The output
voltage can be programmed as low as 0.8V for low volt-
age applications. Selectable current limit is provided to
tailor to external MOSFET’s on-resistance for optimum
cost and performance. The IRU3039 features an uncom-
mitted error amplifier for tracking output voltage and is
capable of sourcing or sinking current for applications
such as DDR bus termination.
Switcher:
VIN = 18V
VOUT = 3.3V
IOUT = 8A
∆VOUT = 100mV
FS = 200KHz
This device features a programmable switching frequency
set from 200KHz to 400KHz, under-voltage lockout for
both Vcc and Vc supplies, an external programmable
soft-start function as well as output under-voltage detec-
tion that latches off the device when an output short is
detected.
INPUT/OUTPUT CONNECTIONS
The following is the input/output connections:
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
provides easy connections for the oscilloscope voltage
probe to monitor the output voltage.
Inputs:
JP1: Input (+18V), Gnd
Outputs:
JP2: VOUT (+3.3V), Gnd
Rev. 1.0
05/30/03
www.irf.com
1
IRDC3039EVAL
CONNECTION DIAGRAM
Load
0 - 8A
+20V Gnd
Power Supply
6A Supply
Figure 1 - Connection diagram of evaluation-board for IRU3039.
Rev. 1.0
05/30/03
www.irf.com
2
IRDC3039EVAL
LAYOUT
The four layers for IRU3039 evaluation board are shown The middle layers are dedicated to Power Ground and
in Figures 2.1-2.4. The input capacitors are all located Analog Ground. Analog Ground is kept separated from
close to the MOSFETs. All the decoupling capacitors, the Power Ground and it is connected at a single point
charge pump capacitor and feedback components are as shown in figure 2.1.
located close to IC. The feedback resistors are tied to
the output voltage at the point of regulation.
Figure 2.1 - Top layer of evaluation-board for IRU3039.
Rev. 1.0
05/30/03
www.irf.com
3
IRDC3039EVAL
PGnd
AnGnd
PGnd
Figure 2.2 - Middle layer 1.
Figure 2.3 - Middle layer 2.
Figure 2.4 - Bottom layer.
www.irf.com
Rev. 1.0
05/30/03
4
IRDC3039EVAL
SCHEMATIC
Rev. 1.0
05/30/03
www.irf.com
5
IRDC3039EVAL
BILL OF MATERIAL
Ref Desig Description
Value
Qty
1
1
1
1
1
1
1
4
3
1
1
2
4
1
1
1
1
1
1
4
5
2
2
1
Part#
IRF7466
Manuf
Web site (www.)
irf.com
Q1
Q2
U1
D1
D2
L1
MOSFET
MOSFET
Controller
30V, 12.5mΩ, 11A
30V, 8mΩ, 14A
IR
IR
IR
IR
IR
IRF7458
IRU3039
BAT54S
Synchronous PWM
Schottky Diode Fast Switching
Fast Switching
1µH, 3A
4.7µH, 13A
15µF, 25V
Schottky Diode
Inductor
BAT54
DS1608C-102
DO5022P-472HC
25TQC15M
ECJ-2VF1E104Z
Coilcraft
Coilcraft
Sanyo
coilcraft.com
sanyo.com
L2
Inductor
C1,C2A,B,C Cap, Poscap
C5,6,10
C7
Capacitor
Capacitor
Capacitor
Cap, Poscap
0.1µF, Y5V, 25V
5600pF, X7R, 50V
470pF, X7R, 50V
330uF, 40mΩ
1µF, Y5V, 16V
1µF, X7R, 25V
5.76K, 1%
Panasonic maco.panasonic.co.jp
ECU-V1H562KBG Panasonic
C8
C9A,B
ECJ-2VC1H471J
6TPB-330M
ECJ-2VF1C105Z
ECJ-3YB1E105K
Panasonic
Sanyo
Panasonic maco.panasonic.co.jp
Panasonic
sanyo.com
C3,11,12,13 Capacitor
C13A
R4
R7
Capacitor
Resistor
Resistor
Resistor
Resistor
Resistor
14K, 1%
4.7Ω, 1%
R8
R9
R10
3.16K, 1%
1K, 1%
0Ω
R1,3,5,11 Resistor
R2,6,12,13,14 Resistor
Open(NA)
C2,C9C
JP1,JP2
J1
Capacitor
Open
2 Positive Terminal
Connector
Scope Probe
ED1973-ND
131-50310-00
Digikey
Textronix
Rev. 1.0
05/30/03
www.irf.com
6
IRDC3039EVAL
TYPICAL OPERATING CHARACTERISTICS
Test Conditions:
VIN=20V, VOUT=3.3V, IOUT=0-8A, Fs=200KHz
Figure 4 - Normal condition at No Load.
Figure 5 - Soft-Start.
Ch1: HDrv, Ch2: LDrv, Ch4: Inductor Current
Ch1: VIN, Ch2: VOUT, Ch3: VOUT2, Ch4: Vss
Figure 6 - Soft-Start pin grounded.
Ch1: HDrv, Ch2: LDrv
Figure 7 - Output Ripple.
Ch1: Output Ripple, Ch2: HDrv, Ch3: LDrv,
Ch4: Inductor Current
Rev. 1.0
05/30/03
www.irf.com
7
IRDC3039EVAL
TYPICAL OPERATING CHARACTERISTICS
Test Conditions:
VIN=20V, VOUT=3.3V, IOUT=0-8A, Fs=200KHz
8A
0A
Figure 8 - Output shorted at start up.
Ch1: VOUT, Ch3: Vss, Ch4: Inductor Current
Figure 9 - Load Transient Response
Ch1: VOUT, Ch3: Output Current
90
88
86
84
82
80
78
76
74
72
70
0
1
2
3
4
5
6
7
8
9
10
11
Output Current (A)
Figure 10 - Efficiency Measurement.
VIN=20V, VOUT=3.3V
IR WORLD HEADQUARTERS:233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information
Data and specifications subject to change without notice. 02/01
Rev. 1.0
05/30/03
www.irf.com
8
相关型号：
©2020 ICPDF网 联系我们和版权申明