IRF7821UTRPBF [INFINEON]
Power Field-Effect Transistor, 13.6A I(D), 30V, 0.0091ohm, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, MS-012AA, LEAD FREE, SOP-8;
| 型号： | IRF7821UTRPBF |
| 厂家： | 
Infineon |
| 描述： | Power Field-Effect Transistor, 13.6A I(D), 30V, 0.0091ohm, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, MS-012AA, LEAD FREE, SOP-8 晶体 晶体管 功率场效应晶体管 开关 脉冲 光电二极管 |
| 文件： | 总15页 (文件大小：1783K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IRDC3146EVAL
IRU3146 EVALUATION BOARD USER GUIDE
INTRODUCTION
SPECIFICATION DATA
This reference board is designed to demonstrate all
the features of IRU3146 and can be configured to two
types of applications:
The IRU3146 IC is a Dual synchronous Buck controller,
providing a cost-effective, high performance and flexible
solution. The IRU3146 can be configured as a 2-inde-
pendent or as a 2-phase controller. The 2-phase configu-
ration is ideal for high current applications. The IRU3146
features 1808 out of phase operation which reduces the
required input/output capacitance and results in a fewer
number of capacitors needed. Other key features offered
by this device include two independent programmable
soft starts, programmable switching frequency up to
400KHz per phase, Hiccup current limit and an under
voltage lockout function. The current limit is provided by
sensing the lower MOSFET's on-resistance for optimum
cost and performance.
1) Dual outputs application (Independent Outputs)
2) 2-phase application (Single Output)
This user guide contains the schematic and bill of
materials for each of these applications, and the
design guidelines are described in data sheet.
The MOSFETs sockets on the evaluation board are
dual layout for SOIC-8 and Direct FET footprint.
INPUT/OUTPUT CONNECTIONS
The following is the input/output connections:
The connection points for dual output application are
shown in Figure 1. Connect the power supply cables
according to this figure, minimizing wire lengths to re-
duce losses in the wire. Test points J1, J2, J3 and J4
provide easy connection for oscilloscope voltage probe
to monitor the inductor points for each PWM section
and output voltages.
Inputs:
JP1: Vin and Gnd
JU4: VCC and Gnd
JU5: VCL/VCH1/VCH2
Outputs:
Dual Outputs
2-Phase
JP2: Vout1 for Dual output
JP5: Vout2 for Dual output
JP4: Vout for 2-phase application
VIN = 12V
VIN = 12V
VOUT1 = 2.5V
VOUT1 = 1.8V
IOUT1 = 10A
IOUT1 = 35A
VOUT2 = 1.8V
∆VOUT = 50mV
Scope Probe connections:
J1 and J3: Inductor point for L2 and L3
J2 and J4: Outputs for Vout1 and Vout2
IOUT1 = 10A
FS = 300KHz
∆VOUT = 50mV
FS = 300KHz
Rev.1.0
7/28/04
www.irf.com
1
IRDC3146EVAL
CONNECTION DIAGRAM
LOAD
0-10A
LOAD
0-10A
Figure 1 - Connection diagram of evaluation-board for IRU3146 in Dual output configuration
Rev.1.0
7/28/04
www.irf.com
2
IRDC3146EVAL
LAYOUT
The PCB is 4-layers FR4 board, the top layer is dedi- The two mid-layers are dedicated for Analog and Power
cated for power components, with two parallel control ground, these two grounds are kept separated from each
MOSFETs and two parallel Synchronous MOSFETs. other and they are connected at a single point as shown
These MOSFETs are dual layout for both SOIC-8 and in Figure3.
DirectFET footprint. The input capacitors are all located
All the decoupling capacitors, charge pump capacitor
close to MOSFETs. The two output inductors are lo- and feedback components are located close to the IC.
cated closed to MOSFETs and are symmetrical to the The feedback resistors are tied to the output voltage at
output connector for more accurate current sharing re- the point of regulation.
sult.
Figure 2 - Top layer of evaluation-board for IRU3146.
Rev.1.0
7/28/04
www.irf.com
3
IRDC3146EVAL
Figure 3 - Mid layer of evaluation-board for IRU3146.
Rev.1.0
7/28/04
www.irf.com
4
1
2
3
4
5
6
JP1
+12V
GND
+12V
C1
+
C2
+
R9
R36
D
C
B
A
D
C
B
A
C3A
+
C3B
+
C3C
+
C3D C3E
R7
D1
+
+
R37
JU5
R38
C20
N35
VCH
C16
N40
C18
R10
C7
C8
C17
R35
C27A C27B C27C C27D C27E C27F
U1
JP2
J1
R11
R39
25
17 DH1
Q1gate
HICCUP
VCC
DH1
PGND
VOUT1
Q1
Q2
Q7
L2
Q7gate
R12
JU4
VCC
C10
2
19 OCSET1
VDDQ
OCSET1
DL1
C9
C22
C23
R13
R22
R23
15 DL1
Q2Q3gate
R14
IRU3146
R41
C11
Q3
R1
R2
R5
FB1
FB2
N10
N15
Comp1
Comp2
21
C3
1uF
VOUT2
R43
COMP1
COMP2
Q9
16
PGND1
VP2
J2
R27
R29
R28
VSNS1
R3
C12
26 VP2
27 VREF
22 FB1
23 VSNS1
D2
R15
C5
R42
C13
C19
VREF
FB1
R4
N20
R6
N25
7
VSNS2
BAT54A
C6
R44
VSNS1
VSNS2
FB2
JP4
D3
BAT54A
R8
RT
4
20
8
VDDQ
RT
R16
R17
VOUT
VOUT
5
6
VSNS2
FB2
N100
C14
VOUT2
SS1
SS2
SS1
R30
+
C4A
4x
C24
R24
C21
R18
R40
C15
11 DH2
Q4gate
Q8gate
Q8
DH2
Q4
SS2
JP5
L3
C4
R19
9
OCSET2
N200
VOUT2
OCSET2
DL2
J4
VOUT2
PGND
1uF
R45
VCC
PGOOD1
PGOOD
R20
C25
13 DL2
12
Q5Q6gate
R31
Q5
R21
J3
JU1
VDDQ
Q6
PGND2
GND
SYNC 24
JU2
SYNC
FB2
R32
Q10
28
C26
C28A C28B C28C C28D C28E C28F
R25
R26
R33
VP2
R34
+C4B +C4C +C4D +C4E
General Schematic
Title
IRU3146
Size
B
Number
Revision
Date:
File:
28-Jul-2004
C:\Old_Drv\pcb\PCB_last3.ddb
Sheet of
Drawn By:
1
2
3
4
5
6
1
2
3
4
5
6
JP1
+12V
GND
+12V
D
C
B
A
R36
D
C
B
A
C3A
+
C3B
+
C3C
+
C3D C3E
D1
+
+
C20
VOUT3
C16
N40
C18
VCH
C7
C8
C17
C27A C27B C27C
U1
JP2
J1
R11
25
17 HDrv1
Q1gate
HICCUP
VCC
HDrv1
PGND
VOUT1
Q1
Q2
L2
R12
R13
JU4
VCC
C10
2
19 OCSET1
15 LDrv1
VDDQ
OCSET1
LDrv1
C9
Q2Q3gate
R41
VSNS1
R42
IRU3146
C11
C13
R2
R5
N10
N15
Comp1
Comp2
21
C3
1uF
VOUT2
R43
COMP1
COMP2
16
PGND1
VP2
J2
R27
C12
26 VP2
27
D2
C5
C19
VREF
FB1
N25
7
VSNS2
BAT54A
22 FB1
23 VSNS1
R29
C6
R44
VSNS1
VSNS2
FB2
D3
BAT54A
R8
RT
4
20
8
RT
5
6
VSNS2
FB2
C14
SS1
SS2
SS1
+
C4A +C4B +C4C
4x
C21
R18
R19
R20
C15
11 HDrv2
Q4gate
HDrv2
OCSET2
LDrv2
PGND2
GND
Q4
Q5
SS2
JP5
L3
C4
9
OCSET2
N200
VOUT2
J4
VOUT2
PGND
1uF
R45
VCC
PGOOD1
PGOOD
13 LDrv2
Q5Q6gate
R31
R33
J3
JU1
12
28
SYNC 24
JU2
SYNC
FB2
C28A C28B C28C
Dual Outputs
Title
IRU3146
Size
B
Number
Revision
Date:
File:
28-Jul-2004
C:\Old_Drv\pcb\PCB_last3.ddb
Sheet of
Drawn By:
1
2
3
4
5
6
IRDC3146EVAL
BILL OF MATERIAL For Dual Output Application, Vin=12V,
Vout1=2.5V@10A, Vout2=1.8V@10A
Ref Desig
Q1,Q4
Description Value
Qty Part#
Manuf
IR
MOSFET
MOSFET
Controller
Diode
2
2
IRF7821
IRF8113
30V,11mOhm
30V, 6mOhm
Synchronous PWM 1 IRU3146
Q2,Q5
U1
D1
IR
IR
IR
1
2
BAT54S
BAT54A
Fast Switching
Fast Switching
D2,D3
IR
Diode
L2,L3
C3A-E, C4A-C
Panasonic
Sanyo
Sanyo
Panasonic
Panasonic
Panasonic
Panasonic
Panasonic
Inductor
Cap,Poscap
2.45µH,12A,4.9mΩ 2 ETQP6F2R5BFA
8
6
16TPQC47M
6TPB330M
47µF, 16V
C27B-D, C28D-F
C14,C15,C16
C17,C18
Cap,Poscap 330µF,6.3V,40mΩ
Cap,Ceramic 0.1µF, Y5V, 25V
Cap.Ceramic
3
2
ECJ-2VF1E104Z
ECJ-3YB1E105K
ECJ-2VF1C105Z
ECJ-2VB1H103K
ECJ-2VB1H153K
Any
1µF, X7R, 25V
C3,C4,C5,C6,C7,C8,C9,C20,C21
C11
C13
Cap,Ceramic 1µF, Y5V, 16V
Cap,Ceramic 10nF, X7R, 50V
9
1
1
Cap,Ceramic
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
Capacitor
Capacitor
Transistor
15nF, X7R, 50V
5.65KΩ
3.9K
R2
R5
R8
1
1
1
33K
R12,R19
R27,R41
R29,R33,R42,R44
R31,R43
R45
5.11K, 1%
2.15K, 1%
1kΩ, 1%
1.24K,1%
50k,1%
100Ω
2
2
4
2
1
1
R36
R3,6,7,10,11,13,15,18,20,35
R1,4,9,32,39,14,16,17,40,21,22,23,24,28,
R34,37,38,25,26,30
C1,2,C3A,C4C-E, C27E-F,C28A-D,
C19,C10,12,23,24,22,25,26
Q3,Q6,Q7,Q8,Q9,Q10
J1,J2,J3,J4
JP1,JP2,JP5
JU1,JU2,JU4,JU5
Bumpon
Short, 0Ω
Open
10
14
6
Open
Open
Open
12
8
Tektronix
Digi-Key
Digi-Key
3M
6
131-5031-00
Open
Scope Probe
Terminal
4
ED1973-ND
S1012-02-ND
SJ-67A2 Black
2-Pos terminal
3
4
Jumper
4
Rev.1.0
7/28/04
www.irf.com
7
IRDC3146EVAL
TYPICAL OPERATING WAVEFORMS
Figure 4- 2.5V Switching Waveforms at no Load
Figure 5- 2.5V Switching Waveforms at 10A Load
Rev.1.0
7/28/04
www.irf.com
8
IRDC3146EVAL
Figure 6- 1.8V Switching Waveforms at no Load
Figure 7- 1.8V Switching Waveforms at 10A Load
www.irf.com
Rev.1.0
7/28/04
9
IRDC3146EVAL
Figure 8- Power Up Waveforms
Figure 9- Power Up Waveforms
(Internal Regulator)
Rev.1.0
7/28/04
www.irf.com
10
IRDC3146EVAL
Figure 9- Shut Down, SS1 pulls Low
Figure 10- Shut Down, SS2 pulls Low
Rev.1.0
7/28/04
www.irf.com
11
IRDC3146EVAL
Figure 11- Short Circuit Condition (Hiccup Mode) for 2.5V Output
Figure 12- Short Circuit Condition (Hiccup Mode) for 1.8V Output
www.irf.com
Rev.1.0
7/28/04
12
IRDC3146EVAL
Figure 12- Load Transient Response
Step Load for 2.5V (0-10A)
Step Load for 1.8V (0-7A)
IRF7821/8113_12V_1.8V_2.5V_0_15A
R o o m T e m p
95
90
85
80
75
70
65
60
55
50
1.8V out
2.5V out
0
2
4
6
8
10
12
14
16
Iout
Figure 13- Efficiency for 2.5V and 1.8V outputs at room temperature no air flow.
L2=L3=2.17uH @ 17A
Rev.1.0
7/28/04
www.irf.com
13
1
2
3
4
5
6
JP1
+12V
GND
+12V
C1
+
C2
+
D
C
B
A
R36
D
C
B
A
C3A
+
C3B
+
C3C
+
C3D C3E
D1
+
+
C20
VOUT3
C16
N40
C18
VCH
C7
C8
C17
C27A C27B C27C C27D C27E
U1
JP2
J1
R11
25
17 HDrv1
Q1gate
HICCUP
VCC
HDrv1
PGND
VOUT1
Q1
Q2
L2
R12
R13
JU4
VCC
C10
2
19 OCSET1
15 LDrv1
VDDQ
OCSET1
LDrv1
C9
C23
R22
Q2Q3gate
R41
VSNS1
R42
IRU3146
C11
R2
R5
N10
N15
Comp1
Comp2
21
C3
1uF
COMP1
COMP2
16
PGND1
VP2
J2
R27
C12
26 VP2
27 VREF
22 FB1
23 VSNS1
5
D2
C5
C13
VREF
FB1
N25
7
BAT54A
R29
VSNS1
VSNS2
FB2
JP4
D3
BAT54A
R8
RT
4
20
8
VDDQ
RT
VOUT
VOUT
N100
C14
VOUT2
SS1
SS2
6
FB2
SS1
+
C4A
4x
C24
R24
C21
R18
R19
R20
C15
11 HDrv2
Q4gate
HDrv2
OCSET2
LDrv2
PGND2
GND
Q4
Q5
SS2
JP5
L3
C4
9
OCSET2
N200
VOUT2
J4
VOUT2
PGND
1uF
R45
VCC
PGOOD1
PGOOD
13 LDrv2
Q5Q6gate
J3
JU1
12
28
SYNC 24
JU2
SYNC
C28A C28B C28C C28D C28E
+C4B +C4C +C4D +C4E
2-Phase, Single Output
Title
IRU3146
Size
B
Number
Revision
Date:
File:
28-Jul-2004
C:\Old_Drv\pcb\PCB_last3.ddb
Sheet of
Drawn By:
1
2
3
4
5
6
IRDC3146EVAL
BILL OF MATERIAL For 2-Phase Application, Vin=12V, Vout=1.8V@35A
Ref Desig
Q1,Q4
Description Value
Qty Part#
Manuf
IR
IR
DirectFET
DirectFET
Controller
Diode
30V,9mOhm
30V,4mOhm
Synchronous PWM 1
2
2
IRF6617
Q2,Q5
U1
D1
IRF6618
IRU3146
BAT54S
BAT54A
IR
IR
IR
Fast Switching
1
2
D2,D3
Diode
Fast Switching
L2,L3
ETQP1H1ROBFA Panasonic
Inductor
0.8µH,27A,1.56mΩ
2
C1,C2,C3A-E, C4A-E
Sanyo
Sanyo
Cap, Poscap 47µF, 16V
Cap, Ceramic
12 16TPQC47M
10 6TPB330M
C27A-E, C28A-E
330µF,6.3V,40mOhm
C14,C16
C17,C18
ECJ-2VF1E104Z Panasonic
Cap, Ceramic 0.1µF, Y5V, 25V
Cap, Ceramic 1µF, X7R, 25V
2
2
Panasonic
Panasonic
Panasonic
Panasonic
ECJ-3YB1E105K
10 ECJ-2VF1C105Z
C3,C4,C5,C7,C8,C9,C20,C21,C23,C24
C10,C12
C11,C13
Cap, Ceramic
1µF, Y5V, 16V
ECJ-2VC1H100J
ECU-V1H153KBG
Cap, Ceramic 100pF, X7R, 50V
Cap, Ceramic 15nF, X7R, 50V
2
2
R2
R5
R8
Resistor
Resistor
Resistor
Resistor
Resistor
Resistor
1
5.11K,1%
6.8K,1%
33K,1%
5K, 1%
1K, 1%
1.24K, 1%
100Ω
1
1
2
R12,R19
R22,R24,R29,R42
R27,R41
4
2
1
R36
R3,6,7,11,13,18,20,35,10,16,17,23
R1,4,37,38,9,25,26,34,28,43,44,30,31,33,32
R14,R21,R39,R40,R15
C19,22,25,26,6,19
Resistor
Resistor
Resistor
Short, 0Ω
Open
12
15
5
Open
Open
Short
Open
Capacitor
Capacitor
Transistor
Scope Probe
Terminal
Jumper
6
1
2
C15
Q9,Q10
Tektronix
Digi-Key
Digi-Key
131-5031-00
ED1973-ND
S1012-02-ND
2-Pos terminal
J1,J2,J3,J4
JP1,JP4
JU1,JU2,JU3,JU4,JU5
4
2
4
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
7/28/04
www.irf.com
15
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