USER'S MANUAL ISL6228EVAL3Z AN1291 Rev 0.00 May 17, 2007 Evaluation Board Introduction Recommended Equipment The ISL6228EVAL3Z evaluation board demonstrates the performance of the ISL6228 dual-channel PWM controller. The ISL6228 features Intersil's Robust Ripple Regulator (R3) technology. Channel-1 output voltage is 1.5V or 1.8V, pending the state of switch S5. Channel-2 output voltage is 1.8V. Each channel has an on-board dynamic-load generator included for evaluating the transient-load response. It applies a 300s pulse of 4.5A load across VO1 and GND, and it applies a 300s pulse of 5A load across VO2 and GND. * (QTY 2) Adjustable 25V, 3A Power Supply Contents of this document include: * VIN1: Input voltage to the power stage of Channel-1 - J14: VIN1 positive power input - TP20: VIN1 positive voltage sense - J14: VIN1 return power input - TP21: VIN1 return voltage sense * Recommended Test Equipment * Interface Connections * Switch Descriptions * (QTY 1) Fixed 12V, 100mA Power Supply * (QTY 1) Adjustable 20A Constant Current Electronic Load * (QTY 1) Digital Voltmeter * (QTY 1) Four-Channel Oscilloscope Interface Connections * VIN2: Input voltage to the power stage of Channel-2 - J1: VIN2 positive power input - TP9: VIN2 positive voltage sense - J2: VIN2 return power input - TP10: VIN2 return voltage sense * Test Point Descriptions * Design Criteria * Typical Performance - Efficiency - Start-up - Shut-down - Steady State, CCM - Steady State, DCM - Load-transient response * VO1: Regulated output voltage from Channel-1 - J9: VO1 positive power output - TP13: VO1 positive voltage sense - J10: VO1 return power output - TP14: VO1 return voltage sense * Evaluation Board Documentation - Bill of materials - Schematic - Silk-screen plots - Board layer plots * VO2: Regulated output voltage from Channel-2 - J7: VO2 positive power output - TP11: VO2 positive voltage sense - J8: VO2 return power output - TP12: VO2 return voltage sense TABLE 1. DC/DC DESIGN CRITERIA PARAMETER VALUE UNITS VIN 3.3 to 25 VDC VO 0.6 to 5 VDC Full-load 8 ADC PWM Frequency 270, 300 kHz AN1291 Rev 0.00 May 17, 2007 * (QTY 1) Fixed 5V, 100mA Power Supply * VCC: +5V input voltage - TP1: 5V positive input - TP2: 5V return input * +12V: Input voltage for the dynamic-load generator - TP15: 12V positive input - TP16: 12V return input Page 1 of 14 ISL6228EVAL3Z Test Set-up Test-point Descriptions + 12V _ * J4: Scope-probe socket for measuring PHASE1 V TP15 + VIN2 _ J1 OFF OFF ON ON S2 S3 TP16 J11 TP11 _ VO2 READING J7 + J2 J3 J5 TP1 ISL6228EVAL3Z TP2 J14 J4 J13 OFF TP14 VO2 J8 TP12 + 5V _ _ J10 J6 _ VO1 J9 TP13 VO1 INCREASE S5 S1 ON J12 OFF S4 * J12: Scope-probe socket for measuring the current of the Channel-1 on-board transient-load emulator * J3: Scope-probe socket for measuring the PHASE2 node * J5: Scope-probe socket for measuring VO2 * J11: Scope-probe socket for measuring the current of the Channel-2 on-board transient-load emulator * TP1: Monitor the 5V positive input + VIN1 + * J6: Scope-probe socket for measuring VO1 _ + * TP2: Monitor the 5V return input * TP3: Monitor the PGOOD2 pin ON * TP4: Monitor the PGOOD1 pin V + _ VO1 READING FIGURE 1. TEST SET-UP Switch Descriptions * S1: Channel-1 Enable - OFF: Short the Channel-1 EN pin to GND (disable PWM) - ON: Allow the Channel-1 EN pin to pull-up to +5V (enable PWM) * S4: Channel-1 Dynamic Load - OFF: On-board Channel-1 dynamic load disabled - ON: On-board Channel-1 dynamic load enabled * S5: Channel-1 VO Increase - OFF: VO1 is 1.5V, determined by R15 and R23. - ON: Parallel R49 with R15. VO1 is 1.8V. * TP5: The common node of R24 and R20; Useful for Channel-1 loop gain measurement. * TP6: The common node of R25 and R23; Useful for Channel-2 loop gain measurement * TP7: The VO1 side of R24; Useful for Channel-1 loop gain measurement. * TP8: The VO2 side of R25; Useful for Channel-1 loop gain measurement. * TP9: Monitor the VIN1 positive input * TP10: Monitor the VIN1 return input * TP11: Monitor the positive VO1 output * TP12: Monitor the VO1 return output * TP13: Monitor the positive VO2 output * TP14: Monitor the VO2 return output * S2: Channel-2 Enable - OFF: Short the Channel-2 EN pin to GND (disable PWM) - ON: Allow the Channel-2 EN pin to pull-up to +5V (enable PWM) * TP15: Monitor the 12V positive input * S3: Channel-2 Dynamic Load - OFF: On-board Channel-2 dynamic load disabled - ON: On-board Channel-2 dynamic load enabled * TP19: Monitor the EN2 pin AN1291 Rev 0.00 May 17, 2007 * TP16: Monitor the 12V return input * TP17: Monitor the EN1 pin * TP18: Monitor the gate of transistor Q18 * TP20: Monitor the VIN2 positive input * TP21: Monitor the VIN2 return input Page 2 of 14 ISL6228EVAL3Z Typical Performance 100 100 VIN = 8V 95 90 85 EFFICIENCY (%) EFFICIENCY (%) 90 VIN = 12V 80 VIN = 19V 75 85 70 65 1 2 3 4 IOUT (A) 5 6 7 8 FIGURE 2. CHANNEL-1 EFFICIENCY AT VO = 1.5V VO1 VIN = 19V 75 65 0 VIN = 12V 80 70 60 VIN = 8V 95 60 0 1 2 3 4 IOUT (A) 5 6 7 8 FIGURE 3. CHANNEL-2 EFFICIENCY AT VO = 1.8V VO1 PHASE1 PHASE1 VO2 VO2 PHASE2 PHASE2 FIGURE 4. CCM STEADY-STATE OPERATION, VIN = 12V, VO1 = 1.5V, IO1 = 3A, VO2 = 1.8A, IO2 = 4A IO2 IO1 VO2 VO1 PHASE1 FIGURE 6. TRANSIENT RESPONSE, VIN = 19V, VO = 1.5V, IO = 0.1A/4.6A @ 2.55A/s AN1291 Rev 0.00 May 17, 2007 FIGURE 5. DCM STEADY-STATE OPERATION, VIN = 12V, VO1 = 1.5V, IO1 = 0.5A, VO2 = 1.8V, IO2 = 0.5A PHASE2 FIGURE 7. TRANSIENT RESPONSE, VIN = 19V, VO = 1.8V, IO = 0.1A/5.1A @ 2.55A/s Page 3 of 14 ISL6228EVAL3Z Typical Performance (Continued) IO2 IO1 VO2 VO1 PHASE1 FIGURE 8. LOAD INSERTION RESPONSE, VIN = 19V, VO = 1.5V, IO = 0.1A/4.6A @ 2.55As PHASE2 FIGURE 9. LOAD INSERTION RESPONSE, VIN = 19V, VO = 1.8V, IO = 0.1A/5.1A @ 2.55A/s IO1 IO2 VO2 VO1 PHASE1 FIGURE 10. LOAD RELEASE RESPONSE, VIN = 19V, VO = 1.5V, IO = 0.1A/4.6A @ 2.55A/s AN1291 Rev 0.00 May 17, 2007 PHASE2 FIGURE 11. LOAD RELEASE RESPONSE, VIN = 19V, VO = 1.8V, IO = 0.1A/5.1A @ 2.55A/s Page 4 of 14 ISL6228EVAL3Z Bill of Materials QTY REFERENCE 0 DNP (C8, C9) 2 C1, C3 5 C20, C21, C37, C40, C41 6 DESCRIPTION MANUFACTURER PART NUMBER CAP, RADIAL, 56F, 25V, ROHS SANYO 25SP56M CAP, SMD, 0603, 1000pF, 16V, 10%, X7R, ROHS VENKEL H1045-00102-16V10-T CAP, SMD, 0603, 0.1F, 16V, 10%, X7R, ROHS MURATA H1045-00104-16V10-T MURATA H1045-00105-16V20-T CAP, SMD, 0603, 10F, 6.3V, 20%, X5R, ROHS TDK H1045-00106-6R3V20-T C2, C7, C30, C31, C36, C39 CAP, SMD, 0603, 1F, 16V, 20%, Y5V, ROHS 2 C18, C19 2 C5, C6 CAP, SMD, 0603, 2200pF, 50V, 10%, X7R, ROHS MURATA H1045-00222-50V10-T 2 C14, C15 CAP, SMD, 0603, 0.22F, 16V, 10%, X7R, ROHS TDK H1045-00224-16V10-T 2 C4, C38 CAP, SMD, 0603, 0.22F, 25V, 20%, X7R, ROHS VENKEL H1045-00224-25V20-T 2 C34, C35 CAP, SMD, 0805, 4.7F, 16V, 10%, X5R, ROHS PANASONIC H1046-00475-16V10-T 0 DNP (C32, C33) CAP, SMD, 0805, 4.7F, 16V, 10%, X5R, ROHS PANASONIC H1046-00475-16V10-T 2 C16, C17 CAP, SMD, 1206, 1F, 25V, 20%, X5R, ROHS PANASONIC H1065-00105-25V20-T 4 C10 to C13 CAP, SMD, 1206, 10F, 25V, 20%, X5R, ROHS PANASONIC H1065-00106-25V20-T 2 C24, C27 CAP-LOW ESR, SMD, D3L, 330F, 6.3V, 20%, POSCAP, ROHS SANYO 6TPF330M9L DNP (C22, C23, C25, C26, CAP-LOW ESR, SMD, D3L, 330F, 6.3V, 20%, POSCAP, ROHS C28, C29) SANYO 6TPF330M9L 0 2 J1, J13 CONN-GEN, BIND.POST, INSUL-RED, THMBNUT-GND JOHNSON COMPONENTS 111-0702-001 2 J2, J14 CONN-GEN, BIND.POST, INSUL-BLK, THMBNUT-GND JOHNSON COMPONENTS 111-0703-001 0 J3 to J6, J11, J12 CONN-SCOPE PROBE TEST POINT, PCB MNT TEKTRONIX 131-4353-00 4 TP1, TP2, TP15, TP16 CONN-TURRET, TERMINAL POST, TH, ROHS KEYSTONE 1514-2 KEYSTONE 5002 15 TP3 to TP14, TP17 to TP19 CONN-MINI TEST POINT, VERTICAL, WHITE, ROHS 0 DNP (D3, D4) DIODE-SCHOTTKY, SMD, SMB, 2P, 40V, 3A LOW VF, Pb-FREE DIODES INC. B340LB-13-F-T 2 D5, D6 DIODE-SCHOTTKY, SMD, SOT23, 3P, 30V, 200mA, DUAL DIODE FAIRCHILD BAT54S-T 2 D1, D2 LED, SMD, 4P, OTHER, POLARIZEDRED/GRN LUMEX SSL-LXA3025IGC 2 L1, L2 PWR CHOKE COIL, SMD, 13x12.9, 3.3H, 20%, 18A, ROHS Vishay IHLP5050FDER3R3M01 2 U2, U3 IC-HI FREQ BRIDGE DRIVER, 8P, SOIC, 100V, ROHS INTERSIL HIP2100IBZ 1 U1 IC-DUAL CHANNEL CONTROLLER, 28P, QFN, ROHS INTERSIL ISL6228HRZ 5 Q11 to Q14, Q18 0 TRANSISTOR, N-CHANNEL, 3LD, SOT-23, 60V, 115mA, ROHS DIODES INC. 2N7002-7-F-T DNP (Q5, Q10) TRANSISTOR-DUAL N-CHANNEL, 8P, SOIC, 30V, 7.5A, ROHS FAIRCHILD FDS6990AS 0 DNP (Q2, Q7) TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 9.1m RDS, ROHS INTERNATIONAL RECTIFIER IRF7821PBF 2 Q1, Q6 TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 9.1m RDS, INTERNATIONAL ROHS RECTIFIER IRF7821PBF 0 DNP (Q4, Q9) TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 4.0m RDS, INTERNATIONAL ROHS RECTIFIER IRF7832PBF 2 Q3, Q8 TRANSISTOR-MOS, N-CHANNEL, 8P, SOIC, 30V, 4.0m RDS, INTERNATIONAL ROHS RECTIFIER IRF7832PBF 2 Q15, Q16 TRANSISTOR-MOS, N-CHANNEL, SMD, TO-252, 30V, 20A, ROHS VISHAY SUD50N03-07-E3 4 R9, R52, R53, R54 RES, SMD, 0603, 2, 1/10W, 1%, TF, ROHS YAGEO H2511-00020-1/10W1-T KOA H2511-00R00-1/10W-T 0 DNP (R12, R13, R57, R58) RESISTOR, SMD, 0603, 0, 1/10W, TF, ROHS AN1291 Rev 0.00 May 17, 2007 Page 5 of 14 ISL6228EVAL3Z Bill of Materials (Continued) QTY 10 REFERENCE DESCRIPTION R10, R11, R24, R25, R48, RESISTOR, SMD, 0603, 0, 1/10W, TF, ROHS R50, R55, R56, R59, R60 MANUFACTURER PART NUMBER KOA H2511-00R00-1/10W-T RES, SMD, 0603, 10k, 1/10W, 1%, TF, ROHS KOA H2511-01002-1/10W1-T 5 R7, R8, R21, R22, R51 2 R35, R37 RES, SMD, 0603, 1.07k, 1/10W, 1%, TF, ROHS PANASONIC H2511-01071-1/10W1-T 1 R49 RES, SMD, 0603, 162k, 1/10W, 1%, TF, ROHS YAGEO H2511-01623-1/10W1-T 2 R26, R27 RES, SMD, 0603, 2k, 1/10W, 1%, TF, ROHS KOA H2511-02001-1/10W1-T 1 R3 RES, SMD, 0603, 20k, 1/10W, 1%, TF, ROHS KOA H2511-02002-1/10W1-T 1 R4 RES, SMD, 0603, 22.1k, 1/10W, 1%, TF, ROHS PANASONIC H2511-02212-1/10W1-T 2 R34, R36 RES, SMD, 0603, 2.49k, 1/10W, 1%, TF, ROHS KOA H2511-02491-1/10W1-T 1 R14 RES, SMD, 0603, 22.6k, 1/16W, 1%, TF, ROHS VENKEL H2511-02262-1/10W1-T 4 R1, R2, R5, R6 RES, SMD, 0603, 499, 1/10W, 1%, TF, ROHS KOA H2511-04990-1/10W1-T 2 R30, R31 RES, SMD, 0603, 49.9k, 1/10W, 1%, TF, ROHS VENKEL H2511-04992-1/10W1-T 1 R15 RES, SMD, 0603, 53.6k, 1/10W, 1%, TF, ROHS YAGEO H2511-05362-1/10W1-T 4 R16, R17, R28, R29 RES, SMD, 0603, 5.76k, 1/10W, 1%, TF, ROHS ROHM H2511-05761-1/10W1-T 2 R18, R19 RES, SMD, 0603, 590, 1/10W, 1%, TF, ROHS VENKEL H2511-05900-1/10W1-T 2 R20, R23 RES, SMD, 0603, 80.6k, 1/10W, 1%, TF, ROHS VENKEL H2511-08062-1/10W1-T 0 DNP (R32, R33) RES, SMD, 1206, 1.5, 1/4W, 1%, TF, ROHS VENKEL H2513-001R5-1/4W1-T 4 R41, R43, R45, R47 RES, SMD, 1206, 1.5, 1/4W, 1%, TF, ROHS VENKEL H2513-001R5-1/4W1-T 5 R38, R40, R42, R44, R46 RES, SMD, 1206, 1.8, 1/4W, 1%, TF, ROHS VENKEL H2513-001R8-1/4W1-T 5 S1 to S5 SWITCH-TOGGLE, SMD, ULTRAMINI, 1P, SPST MINI C&K COMPONENTS GT11MSCBE-T 4 J7 to J10 MTG HDWR, CBL.TERMINAL-LUG and SCREW, 6 to 14AWG BERG/FCI KPA8CTP AN1291 Rev 0.00 May 17, 2007 Page 6 of 14 8 5 1 0.1UF TP11 TITLE: TP18 C37 8 10K 7 ENGINEER: 6 5 4 Page 7 of 14 FIGURE 12. ISL6228EVAL3Z SCHEMATIC 3 0.1UF C40 TP12 DNP C32 C34 4.7UF C28 DNP C26 DNP C24 330UF R46 1.8 R44 R42 1.8 1.8 1.8 R38 R32 DNP 1.8 C22 DNP C41 0.1UF DNP C33 C35 4.7UF DNP C25 C23 DNP C27 330UF SUD50N03_07 J12 5 ISL6228EVAL3Z REV.B DATE: APR 16, 2007 PAGE: JIA WEI 2 R47 6 1.5 HI A Q16 R45 LI HS R37 1.07K 7 R43 HO 8 J6 PGND 1.5 DNP C29 VSS 1.5 S5 3 Q14 4 2N7002-7-F HB B J10 1.5 R51 Q18 C6 2200PF +5V VO1 R36 R39 590 1 2 R33 2K R19 J9 2.49K DNP R27 0 U3 HIP2100 LO VDD 1UF R25 10UF R23 80.6K C19 R15 R49 +12V ON 53.6K 162K SUD50N03_07 TP14 C20 0.1UF S4 2N7002 Q15 J11 R41 R28 5.76K C31 OFF TP8 Q12 5 C GND 6 ROUTE PGND1 TO Q3,Q4 PADS OFF TP6 2N7002 R35 D6 BAT54S A HI TP16 1.07K 7 3.01 +5V DNP R31 499 10K S1 HS R34 L1 FDS6990S D1 RED ON R22 TP17 DNP LI R60 Q4 2 1 R17 5.76K 0 8 7 HO 8 3.3UH 49.9K R11 10K Q5 VSS J8 PLACE R12,R56 CLOSE TO L1 FDS6990S R12 IRF7832 DNP HB J5 PGND +12V +12V TP15 2.49K J4 DNP DNP 4 3 Q3 6 5 Q2 C15 0.22UF Q5 3 Q13 4 2N7002-7-F 0 DNP 10UF C18 Q1 1 2 R56 1UF 10UF C17 10UF C13 C9 C11 R52 2 1UF IRF7821 D4 FB1 VO1 OCSET1 EN1 PHASE1 UGATE1 BOOT1 15 TP21 1UF 16 J14 2 PGND1 PGND 0 TP4 R50 17 LGATE1 PVCC1 PGOOD1 EP 29 R8 499 R6 ISL6228CRZ FSET1 7 0.01UF GRN VIN1 6 18 TP20 R53 0.22UF C3 19 VIN1 J13 8 9 10 11 12 13 14 R4 20 PGND2 VCC1 5 21 LGATE2 U1 VCC2 4 22.1K PVCC2 VIN2 3 1UF C38 BOOT2 C7 2 C2 0.22UF C36 1UF FSET2 C39 1 C4 U2 HIP2100 LO VDD C30 S3 28 27 26 25 24 23 22 R3 20K 2K PGOOD2 FB2 VO2 OCSET2 EN2 PHASE2 UGATE2 0 R9 2 2 R10 R54 0.01UF 0 +12V ON R26 VO2 D5 BAT54S C1 R59 C21 0.1UF 0 R16 OFF DNP R29 5.76K 1UF ROUTE PGND2 TO Q8,Q9 PADS TP13 R40 FDS6990S R57 R13 DNP DNP DNP R58 1UF 10UF C16 10UF C12 C8 C10 2 1 3.3UH DNP 8 7 D L2 R30 Q10 Q9 J7 PLACE R13, R55 CLOSE TO L2 49.9K TP7 TP19 0 J3 FDS6990S 5.76K D2 IRF7832 DNP Q8 10K Q11 R2 4 3 0.22UF 6 5 DNP R21 S2 OFF Q10 Q7 C14 R24 80.6K TP3 ON 2200PF DNP R55 40.2K R20 Q6 0 10K 499 R14 TP10 IRF7821 D3 590 R7 2N7002 B C5 R18 RED R1 GRN 499 R5 0 R48 GND TP5 J2 DNP PGND TP2 C 2 3 J1 TP9 +5V TP1 D 4 VIN2 DNP +5V 6 7 1 OF 1 1 ISL6228EVAL3Z AN1291 Rev 0.00 May 17, 2007 ISL6228EVAL3Z Evaluation Board Schematic ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout FIGURE 13. TOP SILKSCREEN AN1291 Rev 0.00 May 17, 2007 Page 8 of 14 ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout (Continued) FIGURE 14. BOTTOM SILKSCREEN AN1291 Rev 0.00 May 17, 2007 Page 9 of 14 ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout (Continued) FIGURE 15. LAYER 1 AN1291 Rev 0.00 May 17, 2007 Page 10 of 14 ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout (Continued) FIGURE 16. LAYER 2 AN1291 Rev 0.00 May 17, 2007 Page 11 of 14 ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout (Continued) FIGURE 17. LAYER 3 AN1291 Rev 0.00 May 17, 2007 Page 12 of 14 ISL6228EVAL3Z ISL6228EVAL3Z Evaluation Board Layout (Continued) FIGURE 18. LAYER 4 AN1291 Rev 0.00 May 17, 2007 Page 13 of 14 Notice 1. Descriptions of circuits, software and other related information in this document are provided only to illustrate the operation of semiconductor products and application examples. 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