ISL6310EVAL1Z Intersil, ISL6310EVAL1Z Datasheet

ISL6310EVAL1Z

Manufacturer Part Number

ISL6310EVAL1Z

Description

EVALUATION BOARD FOR ISL6310

Manufacturer

Intersil

Datasheets

1.ISL6310CRZ.pdf (27 pages)

2.ISL6310EVAL1Z.pdf (20 pages)

Specifications of ISL6310EVAL1Z

Main Purpose

DC/DC, Step Down

Outputs And Type

1, Non-Isolated

Voltage - Output

1.5V

Current - Output

60A

Voltage - Input

5 ~ 12V

Regulator Topology

Buck

Frequency - Switching

400kHz

Board Type

Fully Populated

Utilized Ic / Part

ISL6310

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Current page: 1 of 20
Download datasheet (2Mb)

Introduction

The progress in many parts of modern power systems such

as DDR/Chipset core voltage regulators, high current low

voltage DC/DC converters, FPGA/ASIC DC/DC converters

and many other general purpose applications keeps

challenging the power management IC makers to come up

with innovative products and new solutions to meet the

increase in power, reduction in size and increase in the

DC/DC converter’s efficiency targets. The interleaved

multiphase synchronous buck topology proves again to be

the topology of choice for such high current low voltage

applications.

The ISL6310 is a space-saving, cost-effective solution for

such applications. The ISL6310 is a two-phase PWM control

IC with integrated high current MOSFET drivers. The

integration of 5V to 12V high current MOSFET drivers into

the controller IC marks a departure from the separate PWM

controller and driver configuration of previous multi-phase

product families. By reducing the number of external parts,

this integration allows for a cost and space saving power

management solution.

Output voltage can be programmed using the on-chip DAC

or an external precision reference. A two bit code programs

the DAC reference to one of 4 possible values (0.6V, 0.9V,

1.2V and 1.5V). A unity gain, differential amplifier is provided

for remote voltage sensing, compensating for any potential

difference between remote and local grounds. The output

voltage can also be offset through the use of single external

resistor. An optional droop function is also implemented and

can be disabled for applications having less stringent output

voltage variation requirements or experiencing less severe

step loads.

A unique feature of the ISL6310 is the combined use of both

DCR and r

positioning and overcurrent protection are accomplished

through continuous inductor DCR current sensing, while

balance. Using both methods of current sampling utilizes the

best advantages of each technique.

Protection features of this controller IC include a set of

sophisticated overvoltage and overcurrent protection.

Overvoltage results in the converter turning the lower

MOSFETs ON to clamp the rising output voltage and protect

the load. An OVP output is also provided to drive an optional

crowbar device. The overcurrent protection level is set

through a single external resistor. Other protection features

include protection against an open circuit on the remote

sensing inputs. Combined, these features provide advanced

protection for the output load.

DS(ON)

current sensing is used for accurate channel-current

DS(ON)

current sensing. Load line voltage

ISL6310EVAL1Z: Two Phase Buck Converter with

Application Note

Integrated High Current 5V to 12V Drivers

1-888-INTERSIL or 1-888-468-3774

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

The ISL6310EVAL1Z evaluation board embodies a 55A to

60A regulator solution targeted at supplying power to the

designated load. The physical board design is optimized for

2 phase operation and ships out configured to provide one of

the following four output voltages (0.6V, 0.9V, 1.2V and 1.5V)

depending on choice of the REF1, REF0 combination set by

DIP switch U2, but can be easily modified to provide any

output voltage values in the range of 0.6V to 2.3V by means

of resistor divider composed of R90, R81.

For further details on the ISL6310, consult the data sheet [1].

The Intersil multi-phase family controller and driver portfolio

continues to expand with new selections to better fit our

customer’s needs. Refer to our web site for updated

information: www.intersil.com.

ISL6310EVAL1Z Board Design

The evaluation kit consists of the ISL6310EVAL1Z

evaluation board, the ISL6310 data sheet, and this

application note. The evaluation board is optimized for two

phase operation without droop, the nominal output voltage is

1.5V (with DIP switch U2 set to 11 position) and the

maximum output current is 60A.

The evaluation board provides convenient test points, a DIP

switch for DAC (REF) voltage selection from four possible

values (0.6V, 0.9V, 1.2V and 1.5V), footprint for a resistor

divider for output voltage adjustment up to 2.3V, and an on-

board transient load generator to facilitate the evaluation

process. An on board LED is present to indicate the status of

the PGOOD signal. The board is configured for down

conversion from 5V to 12V to the REF setting.

The printed circuit board is implemented in 6-layer, 2-ounce

copper. Layout plots and part lists are provided at the end of

the application note for this design.

Quick Start Evaluation

The ISL6310EVAL1Z is designed for quick evaluation after

following only a few simple steps. All that is required is two

bench power supplies, Oscilloscope and Load. To begin

evaluating the ISL6310EVAL1Z follow the steps below.

1. Before doing anything to the evaluation board, make sure

2. Connect a 12V, 10A Lab power supply between J7 and

December 12, 2006

the “Enable” switch (S1) and the “Transient Load

Generator” switch (S2) are both in the ON position

corresponding to the converter being disabled and the

transient load generator being turned off.

J8, this Power supply provides VIN and PVCC (with

original board configuration).

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

Intersil (and design) is a registered trademark of Intersil Americas Inc.

Author: Nasser A. Ismail

AN1197.1

Related parts for ISL6310EVAL1Z

ISL6310EVAL1Z Summary of contents

Page 1

... Layout plots and part lists are provided at the end of the application note for this design. Quick Start Evaluation The ISL6310EVAL1Z is designed for quick evaluation after following only a few simple steps. All that is required is two bench power supplies, Oscilloscope and Load. To begin evaluating the ISL6310EVAL1Z follow the steps below ...

Page 2

... J2) and GND terminal (J3, J4). OUT 6. Move the “Enable” switch (S1) to the OFF position releasing the IC ENLL pin to rise to begin regulation. After step 6, the ISL6310EVAL1Z should be regulating the output voltage, at the “V +” and “V OUT P21) and J5 to the REF voltage. The “PGOOD Indicator” ...

Page 3

... OPEN FIGURE 2. LOAD TRANSIENT GENERATOR Inductor DCR Static Current Sense Points A unique feature of the ISL6310EVAL1Z is the ability to measure the voltage drop across the DCR of each channel’s inductor by multimeter. This is accomplished with the use of a capacitor and resistor series circuit which is placed in parallel across each inductor as illustrated in Figure 3 ...

Page 4

... All that is required is a single resistor between the OFS and VCC pins, or the OFS pin and GND. The ISL6310EVAL1Z has both of these resistor options available on the board. To positively offset the output voltage populate resistor R5. To negatively offset the output voltage populate resistor R7 ...

Page 5

... ISL6310 Performance Soft-Start Interval The typical start-up waveforms for the ISL6310EVAL1Z are shown in Figure 5. The waveforms represented in this image show the soft-start sequence of the regulator DAC set to 1.50V. Before the soft-start interval begins, VCC and PVCC are above POR and the DAC is set to 11. With these two ...

Page 6

... Board Transient load generator. The rising edge transient response of the ISL6310EVAL1Z, is shown in Figure 8. In order to obtain the load current waveform shown, the bench-top load is turned off, while the on-board transient generator is pulsing a 25A step for 500μ ...

Page 7

... GND> GND> GND> FIGURE 13. ISL6310EVAL1Z PRE-POR OVERVOLTAGE PROTECTION Efficiency The efficiency of the ISL6310EVAL1Z board, loaded from 0A to 60A, at both PVCC = 5V and 12V are plotted in Figure 14 for V = 1.5V. Measurements were performed at room OUT temperature and taken at thermal equilibrium without any air flow. The efficiency peaks just below 88% at 35A for the ...

Page 8

PVCC = 12V LOAD CURRENT ( A ) FIGURE 14. EFFICIENCY vs LOAD CURRENT The efficiency for V = 1.8V is ...

Page 9

... Down-Converting From a Different Input Voltage The ISL6310EVAL1Z is powered from bench supplies, the input labeled ‘+12V’ can be adjusted down as desired. If experimenting with a lower voltage, be mindful of a few aspects: • The duty cycle of the controller is limited to 66%; the circuit will not be capable of properly regulating the output ...

Page 10

... ISL6310EVAL1Z Schematic I 10 Application Note 1197 AN1197.1 December 12, 2006 ...

Page 11

... ISL6310EVAL1Z Schematic I 11 Application Note 1197 AN1197.1 December 12, 2006 ...

Page 12

... ISL6310EVAL1Z Schematic I 12 Application Note 1197 AN1197.1 December 12, 2006 ...

Page 13

... ISL6310EVAL1Z Schematic I 13 Application Note 1197 I AN1197.1 December 12, 2006 ...

Page 14

... Bill of Materials for ISL6310EVAL1Z REFERENCE DESIGNATOR PART NUMBER C34, 37, 40, 41, 44, 47, 48 4SEPC560M DNP (C29, 30, 33) 4SEPC560M C57 C3225X5R1A226M C56 GRM188R71H102KA ECJ-1VB1H102K C0603X7R500-102KNE C10 C0603X7R500-332KNE 0603B332K500BT C4 0.027µF Ceramic Cap C1 ECU-V1H101JCG C0805COG500-101JNE C2, C7 C0805C103K5RACTU 08055C103KAT2A ECJ-2VB1H103K C0805X7R500-103KNE C8, C9, C64 GRM40X7R104K050AD C0805 1-4K5RAC7800 ...

Page 15

... Bill of Materials for ISL6310EVAL1Z REFERENCE DESIGNATOR PART NUMBER J7 164-6219 P1-P5, P7-P10, P13-P15, 5002 P17, P18, P20, P22, P26, P28, P29, P42 S7 BAS40-06LT1-T S3, S4 BAV99TA-T D2 MBR0540T1-T DNP (D4, D5) MBR0540T1-T D1 SSL-LXA3025IGC-TR L1 T50-8/90-8T-16AWG-1UH CORE, RADIAL, TH, 1.0µH, T50-8/90, 8TURNS, U3 HIP2100IB U1 ISL6310IRZ Q19, Q22 2N7002-T ...

Page 16

... Bill of Materials for ISL6310EVAL1Z REFERENCE DESIGNATOR PART NUMBER R13 60.4kΩ R15, R16 62kΩ R18, R20 750Ω R11 887Ω R69 10Ω R8, R21, R22, R101, R102 0Ω R67 301Ω R70 909Ω R72 0Ω R38, R39 0.12Ω ...

Page 17

... ISL6310EVAL1Z Layout 17 Application Note 1197 TOP SILK SCREEN TOP LAYER (1st) AN1197.1 December 12, 2006 ...

Page 18

... ISL6310EVAL1Z Layout (Continued) 18 Application Note 1197 GROUND LAYER (2nd) GND/SIGNAL LAYER (3rd) AN1197.1 December 12, 2006 ...

Page 19

... ISL6310EVAL1Z Layout (Continued) 19 Application Note 1197 POWER LAYER (4th) GND LAYER (5th) AN1197.1 December 12, 2006 ...

Page 20

... ISL6310EVAL1Z Layout (Continued) 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 ...

Related keywords

isl6310
ISL6310EVAL1Z datasheet
ISL6310EVAL1Z data sheet
ISL6310EVAL1Z pdf datasheet
ISL6310EVAL1Z component
ISL6310EVAL1Z part
ISL6310EVAL1Z distributor
ISL6310EVAL1Z RoHS
ISL6310EVAL1Z datasheet download