Using the ISL6410, ISL6410A Evaluation Board ® Application Note July 2004 AN1131 Using the Evaluation Board Shutdown The ISL6410 and ISL6410A are synchronous current mode PWM regulators offering control and protection features. The PWM can be shut down by pulling the EN pin low or the P6 terminal marked as EN. The ISL6410, ISL6410A evaluation boards highlight the operation of the IC in embedded DC-DC converter applications. Table 1 shows the available evaluation boards. SYNC Function TABLE 1. EVALUATION BOARDS BOARD NAME IC PACKAGE ISL6410EVAL1C ISL6410IU 10 Ld MSOP ISL6410AEVAL1A ISL6410AIU 10 Ld MSOP Power Good When the PWM is within ±10% of the set value the PG signal will go high. The open drain PG pin is pulled HIGH to VIN by a resistor on the board. The PGOOD circuitry monitors VOUT via the FB pin to determine if the outputs are in regulation. PG can be monitored at terminal P8. Recommended Test Equipment • • • • The ISL6410, ISL6410A can be synchronized to an external CMOS clock signal in the range of 500kHz to 1.0MHz. This is to be applied to the SYNC pin or Terminal marked as P7. A 0V-10V, 5A capable power supply An electronic load Four channel oscilloscope with probes Precision digital multimeters Overcurrent Protection The switch current is internally limited to 1300mA max. No external adjustment is available. Power and Load Connections Input Voltage - The ISL6410 operates at 3.3V ±10% and the ISL6410A operates at 5.0V ±10%. When connecting to a 0V-10V power supply, connect the positive lead of the power supply to VIN (P1) post and the ground lead of the supply to the GND (P2) post. Output Adjustment The Output Voltage can be adjusted to the levels shown in the table below by applying the appropriate logic level to the VSET pin via the jumper J2. High = JP2 1-2 closed and JP2 2-3 open and Low = JP2 2-3 open and JP2 2-3 closed. VSET ISL6410 Vo ISL6410A Vo High 1.8V 3.3V Open (NC) 1.5V 1.8V Low 1.2V 1.2V 1 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. 2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL6410EVAL1C Schematic 2 Application Note 1131 Application Note 1131 ISL6410EVAL1C Bill of Materials ITEM REFERENCE QTY 1 U1 1 ISL6410IU IC, Linear Regulator, Single Synchronous Buck 10 Ld MSOP Intersil 2 L1 1 MSS6122-822MX Inductor 8.2µH, 20%, 1.25A SMT Coilcraft 3 C1 1 06036D105KAT2A Capacitor, Ceramic, X5R 1µF, 10%, 6.3V SM_0603 AVX/Generic 4 C2, C6 2 DNP Capacitor, Ceramic SM_0603 AVX/Generic 5 C3, C4 2 08056D106KAT2A Capacitor, Ceramic, X5R SM_0805 AVX/Generic 6 C5 1 DNP Capacitor, Ceramic SM_0805 AVX/Generic 7 C7 1 06036C104KAT2A Capacitor, Ceramic, X7R 0.1µF, 10%, 6.3V SM_0603 AVX/Generic 0603YC104KAT2A Capacitor, Ceramic, X7R 0.1µF, 10%, 16V SM_0603 AVX/Generic Resistor, Film 10kΩ, 5%, 1/16W SM_0603 Panasonic/Generic Alternate PART NUMBER PART TYPE DESCRIPTION 10µF, 10%, 6.3V PKG. VENDOR 8 R1, R2, R3 3 9 JP1 1 68000-236-1X2 Header 1X2 Break Strip GOLD 10 JP2 1 68000-236-1X3 Header 1X3 Break Strip GOLD 11 JP1, JP2 2 S9001-ND Jumper 2 pin jumper 12 SP1 1 TEK131-4353-00 Terminal, Scope Probe Terminal, Scope Probe Tektronix 13 P1 - P7 7 1514-2 Turrett Post Keystone 3 Terminal post,through hole, PTH 1/4 inch tall Digikey Application Note 1131 ISL6410EVAL1C Layout TOP SILK LAYER 1 LAYER 2 LAYER 3 LAYER 4 BOTTOM SILK 4 ISL6410AEVAL1A Schematic 5 Application Note 1131 Application Note 1131 ISL6410AEVAL1A Bill of Materials ITEM REFERENCE QTY PART NUMBER PART TYPE DESCRIPTION PKG. VENDOR 1 U1 1 ISL6410IU IC, Linear Regulator, Single Synchronous Buck 10 Ld MSOP Intersil 2 L1 1 MSS6122-822MX Inductor 8.2µH, 20%, 1.25A SMT Coilcraft 3 C1 1 06036D105KAT2A Capacitor, Ceramic, X5R 1µF, 10%, 6.3V SM_0603 AVX/Generic 4 C2, C6 2 DNP SM_0603 AVX/Generic 5 C3, C4 2 08056D106KAT2A Capacitor, Ceramic, X5R SM_0805 AVX/Generic 6 C5 1 DNP SM_0805 AVX/Generic 7 C7 1 06036C104KAT2A Capacitor, Ceramic, X7R 0.1µF, 10%, 6.3V SM_0603 AVX/Generic 0603YC104KAT2A Capacitor, Ceramic, X7R 0.1µF, 10%, 16V SM_0603 AVX/Generic Resistor, Film 10kΩ, 5%, 1/16W SM_0603 Panasonic/Generic Alternate Capacitor, Ceramic 10µF, 10%, 6.3V Capacitor, Ceramic 8 R1, R2, R3 3 9 JP1 1 68000-236-1X2 Header 1X2 Break Strip GOLD 10 JP2 1 68000-236-1X3 Header 1X3 Break Strip GOLD 11 JP1, JP2 2 S9001-ND Jumper 2 pin jumper Digikey 12 SP1 1 TEK131-4353-00 Terminal, Scope Probe Terminal, Scope Probe Tektronix 13 P1 - P7 7 1514-2 Turrett Post Terminal post,through hole, 1/4 PTH inch tall Keystone ]‘ 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 6 Application Note 1131 ISL6410AEVAL1A Layout TOP SILK LAYER 1 LAYER 2 LAYER 3 LAYER 4 BOTTOM SILK 7