Renesas ISL28006xEVAL1Z User manual

Evaluation Board Manual
AN1532 Rev.2.00 Page 1
Feb 9, 2022 © 2010 Renesas Electronics
The ISL28006 evaluation board is a design platform
containing all the circuitry needed to characterize
critical performance parameters of the ISL28006 in
either a high side or low-side current sense
application. The ISL28006 is available in fixed
100V/V, 50V/V, 20V/V and adjustable gains.
Features
▪One installed sense resistor: 100mΩ, 1W, 1%
▪Option for fixed-gain or adjustable-gain version
▪Connectors for direct connections to external
system supply and load resistor
▪Options for four more on-board sense resistors
▪Options for additional input and output filter
resistors and capacitors
Specifications
▪Low Power Consumption: 50μA,Typ
▪Supply Range on VS+: 2.7V to 28V
▪Wide Common Mode Input: 0V to 28V
▪Operating Temperature Range: -40°C to +125°C
Figure 1. Block Diagram - Fixed Gain Version
Figure 2. Block Diagram - Adjustable Gain Version
Optional
Input Filter
Optional
Output Filter
R
S
VS+
GND
I-SENSE +
I-SENSE-
GND
I-SENSE
OUT
ISL28006
RS+
RS- GND
OUT
VCC
4
5
2
1
3
Optional
Input Filter
Optional
Output Filter
R
S
VS+
GND
I-SENSE +
I-SENSE-
GND
I-SENSE
OUT
ISL28006-ADJ
GND
RS-
FB
OUT
VCC
4
6
2
1
3
RS+
5
Adj.
Gai n
ISL28006xEVAL1Z

AN1532 Rev.2.00 Page 2
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
Contents
1. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Optional Transient Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Board Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

AN1532 Rev.2.00 Page 3
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
1. Functional Description
1.1 Optional Transient Protection
For applications where the load and the power source are permanently connected, transient protection is not
required and only an external current sense resistor (R3) is needed.
For applications where fast transients can generate voltage spikes that can overdrive the amplifier input and drive
the output of the amplifier into the rails, a long overload recovery time will result. Common mode capacitors C7, C9
and differential capacitor C8are used to filter the common mode and differential voltage spikes.
For switching applications or where fast transients are caused by hot plugging the source or load, external
protection components may be needed. The external current limiting resistor (R6) in Figure 5 limits the peak
current through the internal ESD diodes to <20mA. This condition can occur in applications that experience high
levels of in-rush current causing high peak voltages that can damage the internal ESD diodes of the ISL28006. If
the current limiting resistor is required, it needs to be placed on the RS- input (R6). Placing it on the RS+ input side
(R7) results in a much larger error voltage because of the ISL28006 taking its supply current from the sense
current in high-side applications.
For example:
Current limiting resistor R6with a value of 100Ωprovides protection for a 2V transient with the maximum of 20mA
flowing through the input while adding only an additional 13µV (worst case over-temperature) of VOS as shown in
Equation 1. Note: Worst case over-temperature input bias current on the RS- input is 130nA.
Current limiting resistor R7with value of 100Ωprovides the same transient protection, but with an error voltage of
800µV. Note: Worst case over-temperature input bias current on the RS+ input is 8µA as shown in Equation 2.
R7is a carry-over from our characterization board and was used to measure input bias current. The evaluation
board is populated with a zero ohm resistor for R7.
1.2 Power Supplies
External power connections are made through the VS+ and Ground connections on the evaluation board.
Capacitors C2 and C4 perform two duties, de-coupling the supplies and filtering of the power supply noise with
R15. Anti-reverse diodes D1and D3protect the circuit in the case of accidental polarity reversal of the supply.
Resistor R12 is used to connect ground to the fixed gain parts.
(EQ. 1)
(EQ. 2)
R6IRS- 100130nA13V==
R7IRS+ 1008A800V==

AN1532 Rev.2.00 Page 4
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
2. Board Design
Figure 3. ISL28006FH-100EVAL1Z Evaluation Board (Top)
Figure 4. ISL28006FH-100EVAL1Z Evaluation Board (Bottom)

AN1532 Rev.2.00 Page 5
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
2.1 Schematic Diagrams
The ISL2800XEVAL1Z evaluation board is configured with either the ISL28006-100, ISL28006-50, ISL28006-20
or the ISL28006-ADJ device (adjustable gain via external resistors R11 and R14). Note: When using the adjustable
part, V-REF (J1) needs to be grounded. J13 is provided to enable accurate voltage measurements across the
sense resistor R3.
Figure 5 shows the complete schematic for the ISL2800XEVAL1Z evaluation board.
Components shown in red in Figure 5 are optional transient protection and not required for clean environments.
Note: The evaluation board comes equipped with the transient protection devices.
Figure 5. ISL2800XEVAL1Z Schematic Diagram
*Resistor values shown are for the ISL28006-ADJ.
See Table 1
Table 1. Resistor Values
Gain Type R8 R9 R10 R11 R12 R14
Fixed Gain DNP 0 DNP DNP 0 DNP
Variable Gain
(i.e., AV= 101)
0 DNP 0 1k DNP 100k
I-SENSE- I-SENSE+
GND VS+
V-REF
I-SENSE
OUT
1000pF
J4 1
R16 DNP DNP R17 R18
0
DNP R19 R20 DNP
DNP
R5
DNP
R4
DNP R25 DNP R24
0.10
DNP
R1
R2
R23
0
DNP R22
1
2
D3
S1AB
J5
1
R13
0
*R14
*R11
1k
100k
C2
DNP
*R12
DNP
0
OPEN
100
S1AB
0.01µF
1µF
SOT23_6
DNP
OPEN
J3
*R9 *R8
J2 1
U1
1
2
3
5
6
C4
C10
R15
C20
J1 1
D1
21
*R10
R26
4
0
D2
C9
1000pF
R7
0
R6
100
C8
0.01µF
C7
DNP R21
DNP
R3
ISL28006
J13
DNP
ARE FOR KELVIN CONNECTIONS
R16-R20 AND R21-R25
J6
1
2
3
4
5

AN1532 Rev.2.00 Page 6
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
2.2 Bill of Materials
Reference
Designator Description Comments
C2 CAP, SMD, 0805, 1µF, 50V, 20%, X7R, ROHS Power Supply Decoupling and Input
Filter
C4, C8 CAP, SMD, 0603, 0.01µF, 50V, 10%, X7R, ROHS Power Supply Decoupling/Input
Filter and Differential Current Sense
Filter
C7, C9 CAP, SMD, 0603, 1000pF, 50V, 10%, X7R, ROHS Common Mode Current Sense Filter
C10, C20 CAP, SMD, 0603, DNP-Place Holder, ROHS User Selectable Capacitors - Not
Populated
D1, D3 Diode-Rectifier, SMD, S1AB, 50V, ROHS Reverse Power Protection
U1 ISL28006FH100Z-T7, SOT-23, ROHS For ISL28006-100EVAL1Z board
only
ISL28006FH50Z-T7, SOT-23, ROHS For ISL28006-50EVAL1Z board only
ISL28006FH20Z-T7, SOT-23, ROHS For ISL28006-20EVAL1Z board only
ISL28006FHADJZ-T7-T7, SOT-23, ROHS For ISL28006-ADJEVAL1Z board
only
R16, R17, R19, R20,
R21, R22, R24, R25
Resistor, SMD, 0603, MF, DNP-Place Holder User Selectable Kelvin Connection -
Not Populated
R26 Resistor, SMD, 0603, MF, DNP-Place Holder User Selectable Output Load
Resistor - Not Populated
R3 Resistor, SMD, 2512, 0.1, 1W, 1%, TF, ROHS SENSE resistor
R1, R2, R4, R5 Resistor, SMD, 2512, DNP-Place Holder User Selectable SENSE Resistors -
Not Populated
R6, R7, R13, R18,
R23
Resistor, SMD, 0603, 0, 1/10W, TF, ROHS Zero Ohm User Selectable
Resistors
R15 Resistor, SMD, 0603, 100, 1/10W, TF, ROHS Current Limiting Resistors
R11 Resistor, SMD, 0603, 1k, 1/10W, 1%, TF, ROHS (Variable Gain)
RES, SMD, 0603, DNP-Place Holder (Fixed Gain)
Gain and Other User Selectable
Resistors
R14 Resistor, SMD, 0603, 100k, 1/10W, 1%, TF, ROHS (Variable
Gain) RES, SMD, 0603, DNP-Place Holder (Fixed Gain)
Gain and Other User Selectable
Resistors
R8, R10 Resistor, SMD, 0603, 0, 1/10W, 1%, TF, ROHS (Variable Gain)
Resistor, SMD, 0603, DNP-Place Holder (Fixed Gain)
Gain and Other User Selectable
Resistors
R9, R12 Resistor, SMD, 0603, DNP-Place Holder (Variable Gain)
Resistor, SMD, 0603, 0, 1/10W, 1%, TF, ROHS (Fixed Gain)
Gain and Other User Selectable
Resistors

AN1532 Rev.2.00 Page 7
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
2.3 Board Layout
3. Ordering Information
Figure 6. Silkscreen Top
Figure 7. Silkscreen Bottom
Part Number Description
ISL28006-100EVAL1Z ISL28006 100V/V fixed gain evaluation board
ISL28006-50EVAL1Z ISL28006 50V/V fixed gain evaluation board
ISL28006-20EVAL1Z ISL28006 20V/V fixed gain evaluation board
ISL28006-ADJEVAL1Z ISL28006 adjustable gain evaluation board

AN1532 Rev.2.00 Page 8
Feb 9, 2022
ISL28006xEVAL1Z Evaluation Board Manual
4. Revision History
Revision Date Description
2.00 Feb 9, 2022 Applied new template.
Updated Figures 1 and 2.
Added Figures 3, 4, and 7.
Added Ordering Information Tale.
1.00 Apr 12, 2010 Page 3 - Fig2 R11=1k, R14=100k
Page 4 - Fig3 R11=1k, R14=100k Table1: variable gain = 101, R11 = 1k, R14 = 100k
Page 5 - R11 TBD changed to 1k, R14 TBD changed to 100k.
0.00 Feb 18, 2010 Initial release

Corporate Headquarters
TOYOSU FORESIA, 3-2-24 Toyosu,
Koto-ku, Tokyo 135-0061, Japan
www.renesas.com
Contact Information
For further information on a product, technology, the most
up-to-date version of a document, or your nearest sales
office, please visit:
www.renesas.com/contact/
Trademarks
Renesas and the Renesas logo are trademarks of Renesas
Electronics Corporation. All trademarks and registered
trademarks are the property of their respective owners.
IMPORTANT NOTICE AND DISCLAIMER
RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL
SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING
REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND
OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS.
These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible
for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3)
ensuring your application meets applicable standards, and any other safety, security, or other requirements. These
resources are subject to change without notice. Renesas grants you permission to use these resources only for
development of an application that uses Renesas products. Other reproduction or use of these resources is strictly
prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property.
Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims,
damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject
to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources
expands or otherwise alters any applicable warranties or warranty disclaimers for these products.
(Rev.1.0 Mar 2020)