AN1077 INTERSIL | Alldatasheet

Document overview

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Technical content

Features

  • Multi-Phase Power Conversion - 2, 3 or 4 Phase Operation
  • Precision r DS(ON) Current Sharing - Lossless -L o w C o s t
  • Precision CORE Voltage Regulation - Differential Remote Output Voltage Sensing - Programmable Reference Offset 1% System Accuracy
  • Programmable Droop Voltage
  • Excellent Dynamic Response - Combined Input Voltage Feed-Forward and Pulse-by- Pulse Average Current Mode Pinout ISL6244CR (32 LEAD QFN 5X5) TOP VIEW

Ordering Information

PART NUMBER TEMP. ( oC) PACKAGE PKG. DWG. # ISL6244CR 0 to 70 32 Ld QFN L32.5X5 ISL6244CRZ 0 to 70 32 Lead-Free QFN L32.5X5 ISL6244HR -10 to 100 32 Ld QFN L32.5X5 ISL6244HRZ -10 to 100 32 Lead-Free QFN L32.5X5 NOTE: Add “-T” suffix for 32 QFN 5x5 Tape and Reel packages. NC = NO CONNECT 32 31 30 29 28 27 26 25 9 1 01 11 21 31 41 51 6 VID2 VID1 VID0 NC OFS COMP FB NC ISEN3 ISEN2 GND PWM2 PWM1 ISEN1 ISEN4 PWM4 PGOOD FS EN GND VFF VID4 NC VID3IOUT VDIFF VSEN RGND GND GND VCC PWM3 September 2003 AN1077Application Note 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. 2003. All Rights Reserved All other trademarks mentioned are the property of their respective owners.

What’s Inside The Evaluation Board Kit contains the following materials:

  • The ISL6244 EVAL Board
  • The ISL6244 Evaluation Board document What is Needed The following materials will be needed to perform testing:
  • 1 to 2 electronic loads [see note] – 0-25V @ 15A (+VDC) – 0-5V @ 5A (+5V)
  • precision digital multi-meters NOTE: amperage rating of power supplies are determined by maximum expected loading plus a percentage margin of error Quick Setup Guide Step 1: Set the 0-5V power supply to +5V and place in the “STANDBY” or “OFF” position. Connect the positive terminal (+) of the supply to the +5V terminal J5 and the negative terminal (-) of the supply to GND J7. Step 2: Connect the positive terminal (+) of a DMM to the +5V terminal J5 and the negative terminal (-) to the GND terminal J7. Step 3: Set the +VDC power supply to +19V and place in the “STANDBY” or “OFF” position. Connect the positive terminal (+) of the supply to the +VDC terminal J3 and the negative terminal (-) of the supply to GND J4.Connect the load Step 4: Connect the positive terminal (+) of a DMM to the +VDC terminal J3 and the negative terminal (-) to the GND terminal J4. Step 5: Set the 0-12V power supply to +12V and place in the “STANDBY” or “OFF” position. Connect the positive terminal (+) of the supply to the +12V terminal J6 and the negative terminal (-) of the supply to GND J8. Step 6: Connect the positive terminal (+) of a DMM to the +5V terminal J5 and the negative terminal (-) to the GND terminal J7. Step 7: Connect the positive terminal (+) of the electronic load to the VOUT terminal J1. Connect the negative terminal (-) of the electronic load to the GND terminal J2. Make sure the electronic load is set to the 0A condition. Step 8: Connect the positive terminal (+) of a DMM to the VOUT test point TP13 and the negative terminal (-) to the GND test point TP14. Step 9: Check to ensure all jumpers and switches are in their default positions prior to application of power (refer to“Detailed Description of Jumper Settings” and “Detailed Description of Switch Settings” ). Step 10: Set all power supplies to the “ON” position. LED CR1 should show Red. Check all DMM displays for correct voltage levels. Adjust if necessary. Step 11: Turn the ENABLE switch SW2 to the “ON” position. LED CR1 should show Green. The VOUT DMM should read 1.60V (±1%). At this point the board has been properly powered up. Normal testing can begin. NOTE: If you need technical assistanc e, or other assistance, with the ISL6244 Evaluation Board, call 1-888-INTERSIL (468-3774). Detailed Description of Jumper Settings Detailed Description of Switch Settings JUMPER POSITION FUNCTION JP1 Shunted Berg Jumper for VCORE Set Point JUMPER POSITION FUNCTION SW1 On ENABLE On-Board Load Transient Off (default) DISABLE On-Board Load Transient SW2 On ENABLE ISL6244 and ISL6207 Off(default) DISABLE ISL6244 and ISL6207

FIGURE 1. ISL6244 EVAL BOARD INITIAL JUMPER AND SWITCH SETTINGS

5 BIT VID

FIGURE 2. ISL6244 EVAL BOARD TEST POINTS

4020 Stirrup Creek Drive

1 VID2

2 VID1

3 VID0

5 OFS

6 COMP

25 PGOOD

28 GND

29 VFF

30 VID4

32 VID3

33 PAD

FIGURE 3. SCHEMATIC 1

FIGURE 4. SCHEMATIC 2

FIGURE 5. SCHEMATIC 3

FIGURE 6. SCHEMATIC 4

FIGURE 7. SCHEMATIC 5

TABLE 1. BILL OF MATERIALS

71 C 6 2 1 µF - 1206 16V

TABLE 1. BILL OF MATERIALS (Continued)

All Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at website www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporat ion reserves the right to make changes in circuit design and/o r specifications at any time without notice. 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. How- ever, 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web site www.intersil.com Application Note 1077 BOTTOM SILKSCREEN