ISL6562EVAL1

Manufacturer Part NumberISL6562EVAL1
DescriptionEVALUATION BOARD ISL6562
ManufacturerIntersil
ISL6562EVAL1 datasheets
 


Specifications of ISL6562EVAL1

Main PurposeSpecial Purpose DC/DC, VRM SupplyOutputs And Type1, Non-Isolated
Power - Output60WVoltage - Output1.5V
Current - Output40AVoltage - Input5V, 12V
Regulator TopologyBuckFrequency - Switching400kHz
Board TypeFully PopulatedUtilized Ic / PartISL6562
Lead Free Status / RoHS StatusContains lead / RoHS non-compliant  
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Application Note
Introduction
The ISL6560/62 Evaluation Board was designed to
accommodate either the ISL6560 or the ISL6562 power
supply controller ICs. CORE voltage is set by a five bit DAC
that is usually programmed by the microprocessor. For this
board, DAC codes are entered via a five position dip switch.
Power supply input voltages may be applied through three
banana posts or an ATX connector on the board. With an
ATX supply the main input voltage to the converter is 5V. The
ATX 12V supply powers the ISL6560/62, the HIP6601 gate
drivers and the transient load generator. A toggle switch is
provided on the board to enable the ATX supply.
Converter input voltage via the banana connectors can
range from 5V to 12V. A separate connector supplies 12V to
the ISL6560/62, transient load generator and the gate
drivers as described above.
Figure 1 shows the Evaluation Board. Note the ATX
connector at the top of the board. The ATX power switch
SW2, is located to the right of the connector.
FIGURE 1. EVALUATION BOARD
1
ISL6560/62 Evaluation Board
April 2002
Description
This board was design so that a wide range of input voltages
could be used. Burndy binding posts at the lower end of the
board provide the high current connections for the output
load.
Just above the output connectors is a pulse generator to
provide 40A transient loading to verify response to pulse
loading of the supply. Scope probe connectors monitor the
current pulse, and output voltage.
Extra output capacitor locations are available to modify the
output capacitor configuration or type of capacitors. 22µF
ceramic capacitors accompany the bulk electrolytic
capacitors. In an application where the supply is connected
to an active load, high frequency capacitors should be
located as close as possible to the load to help reduce
undesired transient voltage changes at the load.
The ISL6560/62 is located on the left side of the board.
Immediately below the controller IC is the POWER GOOD
monitoring circuit. A dual RED-GREEN LED indicator is
green when the CORE voltage is within the defined data
sheet limits. Figure 13 shows a schematic diagram of the
POWER GOOD monitoring circuit.
ISL6560 and ISL6562
Figure 2 shows a simplified functional block diagram of these
devices, outlining the major differences between the two ICs.
REF
WRGD
X0.82
X1.24
VID4
VID3
+
VID2
D/A
VID1
E/A
VID0
-
FB
COMP
DAC Codes
ISL6560 - VRM 9.0
ISL6562 - VRM 8.5
FIGURE 2. SIMPLIFIED BLOCK DIAGRAM SHOWING
MAJOR DEVICE DIFFERENCES
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
|
1-888-INTERSIL or 321-724-7143
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
AN1009.0
Author: Hal Wittlinger
VCC
UVLO and
3V REF
BIAS CIRCUITS
OSCILLATOR
CT
+
UV
-
PWM1
CONTROL
+
_
LOGIC
OVP
-
PWM2
CS+
+
CMP
-
CS-
GND
CS Threshold Voltage
ISL6560 - 157mV
ISL6562 - 79mV

ISL6562EVAL1 Summary of contents

  • Page 1

    ... FIGURE 2. SIMPLIFIED BLOCK DIAGRAM SHOWING MAJOR DEVICE DIFFERENCES CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. | 1-888-INTERSIL or 321-724-7143 Intersil (and design registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2002. All Rights Reserved AN1009.0 Author: Hal Wittlinger VCC ...

  • Page 2

    ... ATX 5V supply for Gate Drivers Main Input. ATX 12V is used and Load for low power circuitry on board. Generator Main Supply Input ATX Power Switch 3.3V or 12V ATX Connector 1 CALL 1-888 Intersil Scope Probe 10mV/A C Output to an External Load EVALUATION BOARD ...

  • Page 3

    Transient Load Generator Probably one of the most interesting tests for a regulator system is the transient load. From this single test one can access voltage droop, loop stability and the regulator’s response to load changes going from no load ...

  • Page 4

    Figure 10 shows a simplified diagram highlighting the critical areas board layout. This diagram and the following material represent goals to work towards during the layout phase. Goals will be compromised during the layout process due to ...

  • Page 5

    L3 C15, C17-18 C29, C50- 12V 1µ 4.7µF IN C41-42 J5 12V J6 4.7µF TP7 C40 SW1 1 VID4 VCC 16 2 VID3 REF 15 3 VID2 CS VID1 ...

  • Page 6

    ... ISL6560/62 Evaluation Board To PWRGD Pin 10 12V GREEN LED 1 120k 3. 2N7002 FIGURE 13. SCHEMATIC DIAGRAM OF THE POWER GOOD MONITORING CIRCUIT FIGURE 14. SILK SCREEN 6 RED LED 1A 3.3k R10 Q6 2N7002 CAll 1-888 Intersil C ...

  • Page 7

    ISL6560/62 Evaluation Board FIGURE 15A. TOP COPPER FIGURE 15C. POWER PLAN FIGURES 15A-D. Showing ALL FOUR LAYERS OF THE PC BOARD 7 FIGURE 15B. GROUND PLAN FIGURE 15D. BOTTOM COPPER ...

  • Page 8

    TABLE 1. Bill of Materials Quantity Reference 2 C1,C3 2 C2,C4 2 C5,C8, 2 C7,C9 2 C10, C12 1 C11 1 C13 1 C14 6 C15,C17,C18,C29,C50,C51 16 C19,C30,C34,C35,C36,C37, C39,C45,C46,C47,C48,C49, C60,C61,C62,C63 1 C20 6 C21,C24,C25,C26,C27,C28 6 C22,C23,C38,C31,C32,C33 5 C40,C41,C42, C43, C52 ...

  • Page 9

    ... HIP2100 8L\SOIC 4 layers 2 0z Copper Various Various Various Various Various Panasonic ERJM1WSF5M0U, 0.005 1% Panasonic ERJM1WSF5M0U, 0.005 1% Various Various Various Various Various Vishay WSL2512, 0.05 1% Various Various Various Various CTS 2085 CK GT11MSCK Grayhill 76SB02 Keystone 5002 Tektronix 131-4353-00 Intersil Intersil Intersil Various ...

  • Page 10

    The ISL6560 data sheet describes in more detail the following equations. There are several changes from the computations in the body of the data sheet. First, an operating frequency of 400kHz was chosen. Next, this design sequence shows the method ...

  • Page 11

    ... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...