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User Guide 046

ISL70003ASEHEV2Z Evaluation Board User Guide

The ISL70003ASEHEV2Z evaluation board is designed to 
demonstrate the performance of the 

ISL70003ASEH

 product 

as a 12V input to 3.3V output, 6A output current POL regulator, 
with a significantly reduced size footprint compared to the 
ISL70003ASEHEV1Z platform, making it ideal for wiring into 
an existing circuit. For more detailed information, please refer 
to the 

ISL70003ASEH

 datasheet.

The ISL70003ASEHEV2Z evaluation board accepts a nominal 
input voltage of 12V and provides a regulated output voltage of 
3.3V with output current ranging from 0A to 6A. There is a green 
LED indicating PGOOD. The input voltage and output voltage 
presets can be changed to alternate voltages by resistor 
substitutions.

The ISL70003ASEHEV2Z evaluation board is configured to run 
from the nominal 300kHz internal oscillator of the 
ISL70003ASEH.

Specifications

This board has been configured and optimized for the following 
operating conditions:

• 12V  V

IN

, 3.3V V

OUT

, I

OUT

 = 6A maximum

• Power density of 9W/sq. inch of active area
• 89% peak efficiency

Key Features

• Simple  to  use
• Small size PCB, 2.25 sq. inches
• Power-good LED

References

ISL70003ASEH

 Datasheet

Ordering Information

PART NUMBER

DESCRIPTION

ISL70003ASEHEV2Z

ISL70003ASEH radiation and SEE 
hardened 3V to 12V, 6A synchronous buck 
regulator evaluation board

FIGURE 1. ISL70003ASEHEV2Z BLOCK DIAGRAM

ISL70003ASEH

V

OUT

V

IN

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

|

Copyright Intersil Americas LLC 2015. All Rights Reserved

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

August 28, 2015
UG046.0

Summary of Contents for ISL70003ASEHEV2Z

Page 1: ...ard is configured to run from the nominal 300kHz internal oscillator of the ISL70003ASEH Specifications This board has been configured and optimized for the following operating conditions 12V VIN 3 3V...

Page 2: ...User Guide 046 2 UG046 0 August 28 2015 Submit Document Feedback ISL70003ASEHEV2Z Evaluation Board FIGURE 2 ISL70003ASEH TOP VIEW FIGURE 3 ISL70003ASEH BOTTOM VIEW...

Page 3: ...hold at 8 96A for the Overcurrent Protection OCP trip point See Figure 8 for the relationship between the peak current sensed in the IC and the DC output current Use Equation 3 to determine the resist...

Page 4: ...ed forming to provide strain relief On the heatsink package R64 C the lead forming should be made so that the bottom of the heatsink and the formed leads are flush Heatsink Mounting Guidelines The R64...

Page 5: ...Hz FIGURE 8 PEAK CURRENT TO DC IOUT FIGURE 9 THERMAL IMAGE OF REGULATOR WITH 6A LOAD VIN 12V VOUT 3 3V fSW 300kHz TA 25 C 25 C 55 C 125 C 85 C 60 70 80 90 100 50 EFFICIENCY LOAD CURRENT A 0 1 2 3 4 5...

Page 6: ...K RT1 R2 51 1K TPB2 C2 12PF 0 1UF CC8 25K R1 100K PORR1 CC4 0 1UF TP2 0 010UF CPOR TP1 5 49K R4 TP4 7 15K PORR2 TP3 R5 49 9 0 47UF C4 TP5 CSS 0 1UF C5 0 47UF 0 22UF CREF C6 0 47UF D2 RD2 1K 2N7002 7 F...

Page 7: ...TDK C1 1 ea CAP SMD 0603 2700pF 50V 10 X7R ROHS ECJ 1VB1H272K PANASONIC C7 C8 2 ea CAP SMD 0603 6800pF 16V 10 X7R ROHS C0603X7R160 682KNE VENKEL C9 0 ea CAP SMD 0603 DNP PLACE HOLDER ROHS C4 C5 C6 3 e...

Page 8: ...1 10W 1 TF ROHS RC0603FR 073KL YAGEO R3 1 ea RES SMD 0603 357 1 10W 1 TF ROHS ERJ 3EKF3570V PANASONIC R5 1 ea RES SMD 0603 49 9 1 10W 1 TF ROHS CR0603 10W 49R9FT VENKEL R2 1 ea RES SMD 0603 51 1k 1 10...

Page 9: ...User Guide 046 9 UG046 0 August 28 2015 Submit Document Feedback Board Layout FIGURE 11 TOP SILKSCREEN LAYER FIGURE 12 TOP COMPONENT PLACEMENT LAYER...

Page 10: ...User Guide 046 10 UG046 0 August 28 2015 Submit Document Feedback FIGURE 13 LAYER 2 FIGURE 14 LAYER 3 Board Layout Continued...

Page 11: ...ecifications at any time without notice Accordingly the reader is cautioned to verify that the document is current before proceeding For information regarding Intersil Corporation and its products see...

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