ISL9506HRZ-T Intersil, ISL9506HRZ-T Datasheet

ISL9506HRZ-T

Manufacturer Part Number

ISL9506HRZ-T

Description

IC CTRLR PWM 2PHASE 40-QFN

Manufacturer

Intersil

Datasheet

1.ISL9506HRZ.pdf (27 pages)

Specifications of ISL9506HRZ-T

Pwm Type

Controller

Number Of Outputs

Frequency - Max

500kHz

Voltage - Supply

4.75 V ~ 5.25 V

Buck

Yes

Boost

Flyback

Inverting

Doubler

Divider

Cuk

Isolated

Operating Temperature

-10°C ~ 100°C

Package / Case

40-VFQFN, 40-VFQFPN

Frequency-max

500kHz

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Duty Cycle

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ISL9506HRZ-T

Manufacturer:

INTERSIL

Quantity:

20 000

Current page: 1 of 27
Download datasheet (607Kb)

Multiphase PWM Controller with

Programmable Output Voltage

The ISL9506 is a multiphase PWM buck controller for high

performance digital processor core. This multiphase buck

controller uses interleaved channels to reduce the total output

voltage ripple with each channel carrying a portion of total load

current. The multiple phase implementation results in better

system performance, superior thermal management, lower

component cost, reduced power dissipation, and smaller

implementation area. The ISL9506 multiphase controller

together with ISL6208 external gate drivers provide a complete

solution to power the processor core. The PWM modulator of

ISL9506 is based on Intersil's Robust Ripple Regulator

technology (R

regulator, the R

frequency during load transients, which achieves faster

transient response. With the same modulator, the switching

frequency is reduced at light load conditions resulting higher

operation efficiency.

ISL9506 responds to LP (Low Power) signal by adding or

dropping PWM2 and adjusting overcurrent protection

accordingly. ISL9506 enables diode emulation and stretches

switching period at light load conditions to improve efficiency.

The diode emulation feature is programmed by DE_EN (Diode

Emulation Enable) and DE_ENN pins.

The ISL9506 has several other key features. ISL9506 reports

output power through a power monitor pin (PMON). Current

sense can be achieved by using either inductor DCR or discrete

precision resistor. In the case of DCR current sensing, a single NTC

thermistor is used to thermally compensate the inductor DCR

variation with temperature. A unity gain, differential amplifier is

available for remote voltage sensing. This allows the voltage at the

load point to be accurately measured and regulated per voltage

selection pins.

Ordering Information

ISL9506HRZ

ISL9506HRZ-T ISL9506 HRZ -10 to +100 40 Ld 6x6 QFN

*Please refer to TB347 for details on reel specifications.

NOTE: These Intersil Pb-free plastic packaged products employ

special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3 termination finish,

which is RoHS compliant and compatible with both SnPb and Pb-free

soldering operations). Intersil Pb-free products are MSL classified at

Pb-free peak reflow temperatures that meet or exceed the Pb-free

requirements of IPC/JEDEC J STD-020.

NUMBER

(Note)

PART

). Compared with the traditional multiphase buck

ISL9506 HRZ -10 to +100 40 Ld 6x6 QFN L40.6x6

modulator commands variable switching

MARKING

PART

RANGE

TEMP.

(°C)

Data Sheet

Tape and Reel

PACKAGE

(Pb-Free)

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

L40.6x6

DWG. #

PKG.

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

VRHOT#

OCSET

RBIAS

PMON

COMP

Features

• Precision Multiphase Voltage Regulation

• Voltage Selection Input

• Multiple Current Sensing Approaches Supported

• Optimized Efficiency across Overall Load Range

• Superior Noise Immunity and Transient Response

• Power Monitor and Thermal Monitor

• Differential Remote Voltage Sensing

• Programmable 1, 2 or 3 Power Channels

• Excellent Dynamic Current Balance between Channels

• Small Footprint 40 Ld 6x6 QFN Package

• Pb-Free (RoHS compliant)

Applications

• Mobile Laptop Computers

• High Performance Point-of-Load Power Supply

Pinout

SOFT

NTC

- 0.5% System Accuracy Over Temperature

- Enhanced Droop Impedance Accuracy

- 7-Bit VSEL (Voltage Selection) Input

- 0.300V to 1.500V in 12.5mV Steps

- Supports VSEL Changes On-The-Fly

- Lossless DCR Current Sensing

- Precision Resistive Current Sensing

August 13, 2008

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

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

(40 LD QFN)

TOP VIEW

ISL9506

(BOTTOM)

GND PAD

ISL9506

FN6722.0

VSEL2

VSEL1

VSEL0

PWM1

PWM2

PWM3

FCCM

ISEN1

ISEN2

ISEN3

Related parts for ISL9506HRZ-T

ISL9506HRZ-T Summary of contents

Page 1

... MARKING (°C) ISL9506HRZ ISL9506 HRZ -10 to +100 40 Ld 6x6 QFN L40.6x6 ISL9506HRZ-T ISL9506 HRZ -10 to +100 40 Ld 6x6 QFN *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach ...

Page 2

Functional Pin Description PMON 2 RBIAS 3 4 VRHOT# 5 NTC GND PAD (BOTTOM) 6 SOFT 7 OCSET COMP (Pin ...

Page 3

PWM2 (Pin 26) PWM output for Channel 2. For ISL9506, LP low will make this output tri-state. When PWM2 is pulled to 5V VDD, PWM2 will be disabled and allow other channels to operate. PWM1 (Pin 27) PWM output for ...

Page 4

... ISL9506 Thermal Information Thermal Resistance (Notes QFN Package Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . +150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-Free Reflow Profile .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp = -10°C to +100°C, unless otherwise noted. Parameters with MIN and/or A SYMBOL TEST CONDITIONS I VR_EN = 3.3V ...

Page 5

Electrical Specifications Operating Conditions: VDD = 5V, T MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER ISEN Imbalance Voltage Input Bias Current SOFT CURRENT Soft-start Current ...

Page 6

Electrical Specifications Operating Conditions: VDD = 5V, T MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER PGD_N OUTPUT LEVELS PGD_N High Output Voltage PGD_N Low Output ...

Page 7

Typical Operating Performance 100 8. 12. 0.1 1.0 I (A) OUT FIGURE 5. DIODE EMULATION MODE EFFICIENCY, 3 PHASE, DCM OPERATION LOW, VSEL = 0.75V ...

Page 8

Typical Operating Performance 1. 8.0V 1. 12.6V 1.42 IN 1.41 1.40 1. 19.0V IN 1.38 1.37 1. (A) OUT FIGURE 11. DIODE EMULATION MODE DROOP IMPEDANCE, 2 PHASE, DCM OPERATION, ...

Page 9

Typical Operating Performance FIGURE 17. 3 PHASE CURRENT BALANCE, FULL LOAD = 50A V OUT COMP PIN FIGURE 19. TRANSIENT LOAD RESPONSE, 40A LOAD STEP @ 200A/µs, 3 PHASE FIGURE 21. TRANSIENT LOAD 3 PHASE OPERATION, ZOOM OF RISING EDGE ...

Page 10

Typical Operating Performance VSEL MSB V OUT FIGURE 23. VSEL MSB BIT CHANGE FROM 1.4375V TO 0.65V SHOWING 9mV/µs SLEW RATE, DE_EN = 0, DE_ENN = 1 V OUT DE_ENN AND LP FIGURE 25. C4 ENTRY AND EXIT SLEW RATES ...

Page 11

Typical Operating Performance I PHASE V OUT PGOOD FIGURE 29. WOCP - SHORT CIRCUIT PROTECTION LP PGD_N V OUT PHASE 2 FIGURE 31. ISL9506 PHASE ADDING AND DROPPING IN DIODE EMULATION MODE, LOAD CURRENT = 4.35A 11 ISL9506 (Continued) PWM ...

Page 12

Typical Operating Performance PHASE 1 CURRENT PHASE 2 CURRENT FIGURE 33. ISL9506, INDUCTOR CURRENT WAVEFORM WITH PHASE ADDING AND DROPPING IN CCM OR NOMINAL MODE 1.8 1.6 19V, 1.15V, 40A 1.4 1.2 19V, 1.15V, 30A 1.0 0.8 19V, 1.15V, 20A ...

Page 13

Simplified Application Circuit for DCR Current Sensing Figure 39 shows a simplified application circuit for the ISL9506 converter with inductor DCR current sensing. The ISL6208 MOSFET gate driver has a force-continuous-conduction-mode (FCCM) input, that when disabled, allows the regulator to ...

Page 14

Simplified Application Circuit for Resistive Current Sensing Figure 40 shows a simplified application circuit for the ISL9506 converter with external resistor current sensing. A capacitor is added in parallel with RL in order to improve the stability margin of the ...

Page 15

Functional Block Diagram RBIAS VSEL0 VSEL1 VSEL2 DAC VSEL3 DACOUT VSEL4 IBAL VSEL5 VSEL6 MODE CONTROL FCCM VO VR_EN MODE LP SOFT CONTROL DE_EN DE_ENN NUMBER OF 10µA PHASES GAIN SELECT) OCSET VSUM + DROOP DFB - DROOP + 1 ...

Page 16

... It can be programmed for 1 channel operation. With ISL6208 gate driver capable of diode emulation, the ISL9506 provides optimum efficiency in both heavy and light load conditions. 3 ISL9506 uses Intersil patented R (Robust Ripple 3 Regulator®) modulator. The R ® modulator combines the best features of fixed frequency PWM and hysteretic PWM while eliminating many of their shortcomings ...

Page 17

TABLE 1. VOLTAGE SELECTION TABLE (Continued) VSEL5 VSEL4 VSEL3 VSEL2 VSEL1 VSEL0 VSEL6=0 VSEL6 ...

Page 18

... For fastest recovery from Diode Emulation to Nominal mode, DE_EN LOW achieves higher dV/dt. 3 Intersil's R intrinsically has voltage-feed-forward. The output voltage is insensitive to a fast slew input voltage change. Refer to Figure 15 in the “Typical Operating Performance” ...

Page 19

TABLE 3. THE FAULT PROTECTION AND RESET OPERATION OF ISL9506 FAULT DURATION PRIOR TO PROTECTION Overcurrent 120µs Way-Overcurrent (2.5 X <2µs OC) Overvoltage 1.7V Immediately Overvoltage +200mV 1ms Undervoltage -300mV 1ms Phase-Current Unbalance 1ms Over-Temperature Immediately Protection The ISL9506 provides ...

Page 20

The 7Ω impedance is associated with the layout and packaging resistance of PMON pin inside the IC. Compared to the ...

Page 21

As mentioned in the ““Theory of Operation” on page 16 section of this data sheet, PGD_N is logic level high at start- up. When the output voltage reaches 90% of start voltage, a counter is enabled, it counts 13 switching ...

Page 22

Equation 7: 1.24V 1.20V --------------- - – --------------- - = 2.96k 54μA 60μA Therefore, proper NTC thermistor has to be chosen such that 2.96k resistor change will be corresponding to required ...

Page 23

µ ...

Page 24

DCR = 0.0012Ω typical, Rdrp1 = 1kΩ and the attenuation gain (G1) = 0.57, Rdrp2 is then: × ⎛ ⎞ 3 0.0021 × Rdrp2 = ----------------------------------- - 1 – 8.21kΩ ⎝ ⎠ × 0.0012 0.57 Rdrp2 is selected ...

Page 25

The compensation design has to ensure the output impedance of the converter be lower than this desired value. There is a mathematical calculation file available to the user. The power stage parameters such as L and Cs are needed ...

Page 26

... 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 ...

Page 27

Package Outline Drawing L40.6x6 40 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 3, 10/06 6.00 6 PIN 1 INDEX AREA 0.15 (4X) TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 27 ...

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