ISL6228LOEVAL3Z Intersil, ISL6228LOEVAL3Z Datasheet

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ISL6228LOEVAL3Z

Manufacturer Part Number
ISL6228LOEVAL3Z
Description
EVALUATION BOARD FOR ISL6228LO
Manufacturer
Intersil
Series
Robust Ripple Regulator™ (R³)r
Datasheets

Specifications of ISL6228LOEVAL3Z

Main Purpose
DC/DC, Step Down
Outputs And Type
2, Non-Isolated
Voltage - Output
1.5V or 1.8V, 1.8V
Current - Output
8A, 8A
Voltage - Input
3.3 ~ 25V
Regulator Topology
Buck
Frequency - Switching
270kHz, 300kHz
Board Type
Fully Populated
Utilized Ic / Part
ISL6228
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Introduction
The ISL6228LOEVAL3Z evaluation board demonstrates the
performance of the ISL6228 dual-channel PWM controller.
The ISL6228 features Intersil's Robust Ripple Regulator (R
technology. Channel-1 output voltage is 1.5V or 1.8V,
pending the state of switch S5. Channel-2 output voltage is
1.8V. Each channel has an on-board dynamic-load
generator included for evaluating the transient-load
response. It applies a 300µs pulse of 8A load across V
and GND, and also a 300µs pulse of 8A load across V
and GND.
Contents of this document include:
• Recommended Test Equipment
• Interface Connections
• Test Set-up
• Switch Descriptions
• Test Point Descriptions
• Design Criteria
• Typical Performance
• Evaluation Board Documentation
- Efficiency
- Start-up
- Shut-down
- Steady State, CCM
- Steady State, DCM
- Load-transient response
- Bill of materials
- Schematic
- Silk-screen plots
- Board layer plots
PWM Frequency
PARAMETER
Full-load
V
V
IN
O
TABLE 1. DC/DC DESIGN CRITERIA
®
3.3 to 25
270, 300
VALUE
0.6 to 5
1
8
Application Note
UNITS
VDC
VDC
ADC
kHz
1-888-INTERSIL or 1-888-468-3774
O2
O1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
3
)
Recommended Equipment
• (QTY 2) Adjustable 25V, 3A Power Supply
• (QTY 1) Fixed 5V, 100mA Power Supply
• (QTY 1) Fixed 12V, 100mA Power Supply
• (QTY 1) Adjustable 20A Constant Current Electronic Load
• (QTY 1) Digital Voltmeter
• (QTY 1) Four-Channel Oscilloscope
Interface Connections
• V
• V
• V
• V
• VCC: +5V input voltage
• +12V: Input voltage for the dynamic-load generator
ISL6228LOEVAL3Z User Guide
- J14: V
- TP20: V
- J14: V
- TP21: V
- J1: V
- TP9: V
- J2: V
- TP10: V
- J9: V
- TP13: V
- J10: V
- TP14: V
- J7: V
- TP11: V
- J8: V
- TP12: V
- TP1: 5V positive input
- TP2: 5V return input
- TP15: 12V positive input
- TP16: 12V return input
IN1
IN2
O1:
O2
: Regulated output voltage from Channel-2
: Input voltage to the power stage of Channel-1
: Input voltage to the power stage of Channel-2
Regulated output voltage from Channel-1
All other trademarks mentioned are the property of their respective owners.
IN2
IN2
O1
O2
O2
May 17, 2007
|
IN1
IN1
O1
IN2
Intersil (and design) is a registered trademark of Intersil Americas Inc.
O2
IN1
IN1
IN2
O1
O1
O2
positive power output
positive power output
return power output
positive power input
return power input
return power output
positive power input
return power input
positive voltage sense
positive voltage sense
positive voltage sense
return voltage sense
return voltage sense
positive voltage sense
return voltage sense
return voltage sense
Copyright Intersil Americas Inc. 2007. All Rights Reserved
Author: Jia Wei
AN1321.0

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ISL6228LOEVAL3Z Summary of contents

Page 1

... Application Note Introduction The ISL6228LOEVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Intersil's Robust Ripple Regulator (R technology. Channel-1 output voltage is 1.5V or 1.8V, pending the state of switch S5. Channel-2 output voltage is 1.8V. Each channel has an on-board dynamic-load generator included for evaluating the transient-load response. It applies a 300µ ...

Page 2

... Test Set-up TP15 OFF + IN2 TP1 5V _ ISL6228LOEVAL3Z TP2 _ J4 J14 V IN1 + OFF J13 ON V INCREASE FIGURE 1. TEST SET-UP Switch Descriptions • S1: Channel-1 Enable - OFF: Short the Channel-1 EN pin to GND (disable PWM) - ON: Allow the Channel-1 EN pin to pull-up to +5V (enable PWM) • S4: Channel-1 Dynamic Load ...

Page 3

Typical Performance 100 12V 19V (A) OUT FIGURE 2. CHANNEL-1 EFFICIENCY PHASE1 ...

Page 4

Typical Performance (Continued FIGURE 8. LOAD INSERTION RESPONSE 1.5V 0.1A/8.1A @ 2.55A/µ FIGURE 10. LOAD RELEASE RESPONSE 1.5V 0.1A/8.1A @ ...

Page 5

... SANYO 6TPF330M9L JOHNSON 111-0702-001 COMPONENTS JOHNSON 111-0703-001 COMPONENTS TEKTRONIX 131-4353-00 KEYSTONE 1514-2 KEYSTONE 5002 DIODES INC. B340LB-13-F-T FAIRCHILD BAT54S-T LUMEX SSL-LXA3025IGC Vishay IHLP5050FDER2R2M01 INTERSIL HIP2100IBZ INTERSIL ISL6228HRZ DIODES INC. 2N7002-7-F-T FAIRCHILD FDS6990AS INTERNATIONAL IRF7821PBF RECTIFIER INTERNATIONAL IRF7821PBF RECTIFIER AN1321.0 May 17, 2007 ...

Page 6

Bill of Materials (Continued) QTY REFERENCE 0 DNP (Q4, Q9) TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 4.0mΩ RDS, ROHS 2 Q3, Q8 TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 4.0mΩ RDS, ROHS 2 Q15, Q16 TRANSISTOR-MOS, N-CHANNEL, SMD, TO-252, 30V, 20A, ROHS 4 ...

Page 7

... ISL6228LOEVAL3Z Evaluation Board Schematic 8 7 +5V +5V TP1 D GND R18 C5 TP2 845 1500PF R7 R14 R20 10K 52.3K 105K ON R21 S2 10K OFF C 2N7002 Q11 C1 0.01UF R3 1 FSET2 BOOT2 19. VIN2 PVCC2 C2 0.22UF 3 VCC2 U1 LGATE2 C36 1UF 4 VCC1 PGND2 C38 1UF 5 VIN1 PGND1 ISL6228CRZ R4 0.22UF ...

Page 8

... ISL6228LOEVAL3Z Evaluation Board Layout 8 Application Note 1321 FIGURE 13. TOP SILKSCREEN AN1321.0 May 17, 2007 ...

Page 9

... ISL6228LOEVAL3Z Evaluation Board Layout 9 Application Note 1321 (Continued) FIGURE 14. BOTTOM SILKSCREEN AN1321.0 May 17, 2007 ...

Page 10

... ISL6228LOEVAL3Z Evaluation Board Layout 10 Application Note 1321 (Continued) FIGURE 15. LAYER 1 AN1321.0 May 17, 2007 ...

Page 11

... ISL6228LOEVAL3Z Evaluation Board Layout 11 Application Note 1321 (Continued) FIGURE 16. LAYER 2 AN1321.0 May 17, 2007 ...

Page 12

... ISL6228LOEVAL3Z Evaluation Board Layout 12 Application Note 1321 (Continued) FIGURE 17. LAYER 3 AN1321.0 May 17, 2007 ...

Page 13

... ISL6228LOEVAL3Z Evaluation Board Layout Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...

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