Renesas ISL81801EVAL2Z User Manual
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Renesas ISL81801EVAL2Z User Manual

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ISL81801EVAL2Z
Evaluation Board
The ISL81801EVAL2Z evaluation board (shown in
synchronous buck-boost controller that provides external soft-start, independent enable functions, and integrates
UV/OV/OC/OT protection. A programmable switching frequency ranging from 100kHz to 600kHz helps to
optimize the inductor size while the strong gate driver delivers up to 20A for the buck-boost output.
Key Features
• Wide input range: 32V to 80V
• Bi-directional operation
• High light-load efficiency in pulse skipping DEM operation
• Programmable soft-start
• Optional DEM/PWM operation
• Optional CC/HICCUP OCP protection
• Supports pre-bias output with soft-start
• PGOOD indicator
• OVP, OTP, and UVP protection
Specifications
The ISL81801EVAL2Z evaluation board is designed for high current applications. The current rating of the
ISL81801EVAL2Z is limited by the FETs and inductor selected. The ISL81801EVAL2Z electrical ratings are
shown in
Table
1.
Table 1.
Electrical Rating
Parameter
Input Voltage
Switching Frequency
Output Voltage
Output Current
OCP Set Point
Ordering Information
Part Number
ISL81801EVAL2Z
Related Literature
For a full list of related documents, visit our website:
•
ISL81801
device page
R12UZ0081EU0100 Rev.1.00
May.6.20
Figure
5) features the ISL81801, a 80V high voltage
32V to 80V
200kHz
48V
5A
Minimum 5.5A at ambient room temperature
High Voltage BUCK-BOOST Controller Evaluation Board
User's Manual
Rating
Description
Page 1 of 17

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Summary of Contents for Renesas ISL81801EVAL2Z

  • Page 1 • PGOOD indicator • OVP, OTP, and UVP protection Specifications The ISL81801EVAL2Z evaluation board is designed for high current applications. The current rating of the ISL81801EVAL2Z is limited by the FETs and inductor selected. The ISL81801EVAL2Z electrical ratings are shown in Table Table 1.
  • Page 2 ISL81801EVAL2Z FB_IN VOUT BOOT1 PGND VCC5V PHASE1 IMON_IN ISL81801 HTSSOP LG1/ IMON_OUT PWM _MODE SGND LG2/ PLL_COMP OC_MODE RT/SYNC PHASE2 SS/TRK COMP FB_OUT BOOT2 Figure 1. ISL81801EVAL2Z Block Diagram R12UZ0081EU0100 Rev.1.00 Page 2 of 17 May.6.20...

  • Page 3: Functional Description

    1. Functional Description Functional Description The ISL81801EVAL2Z is the same test board used by Renesas application engineers and IC designers to evaluate the performance of the ISL81801 HTSSOP IC. The board provides an easy and complete evaluation of all the IC and board functions.
  • Page 4 ISL81801EVAL2Z 1. Functional Description Quick Test Guide 1. Jumper J8 provides the option to select PWM or DEM. Jumper J9 provides the option to select constant current limit or HICCUP. See Table 2 for the operating options. Ensure that the circuit is correctly connected to the supply and electronic loads before applying any power.

  • Page 5: Pcb Layout Guidelines

    MOSFETs. 2. If signal components and the IC are placed separately from the power train, Renesas recommends using full ground planes in the internal layers with shared SGND and PGND to simplify the layout design. Otherwise, use separate ground planes for the power ground and the small-signal ground.
  • Page 6 12. Use a pair of traces with minimum loop for the input or output current sensing connection. 13. Ensure the feedback connection to the output capacitor is short and direct. ISL81801EVAL2Z Evaluation Board Figure 5. ISL81801EVAL2Z Evaluation Board, Top View Figure 6. ISL81801EVAL2Z Evaluation Board, Bottom View R12UZ0081EU0100 Rev.1.00 Page 6 of 17 May.6.20...
  • Page 7 ISL81801EVAL2Z Circuit Schematic VOUT Figure 7. Schematic...
  • Page 8 ISL81801EVAL2Z 2. PCB Layout Guidelines Bill of Materials Reference Designator Description Manufacturer Manufacturer Part PWB-PCB, ISL81801EVAL2Z, Imagineering Inc ISL81801EVAL2ZREVCPCB REVC, ROHS CAP-AEC-Q200, SMD, 0603, CGA3E2X7R1H103K080AE 0.01µF, 50V, 10%, X7R, ROHS C1, C2, C5, C6, C7, C8, C9, CAP-AEC-Q200, SMD, 1210,...
  • Page 9 On Semiconductor MBR1H100SFT3G S0D-123FL, 100V, 1A, ROHS DIODE-ZENER, SMD, Diodes, Inc. MM3Z4V7T1G SOD-323, 4.7V, 6%, 300mW, ROHS IC-80V 4-SWITCH PWM Renesas Electronics America ISL81801FVEZ CONTROLLER, 32P, HTSSOP, 5x5, ROHS Q2, Q3, Q5, Q8 TRANSISTOR-MOS, Infineon Technology BSC070N10NS5ATMA1 N-CHANNEL,SMD, 8P, PPK...

  • Page 10: Board Layout

    Q1, Q4, Q6, Q7 DO NOT POPULATE OR PURCHASE DO NOT POPULATE OR PURCHASE AFFIX TO BACK OF PCB LABEL-DATE CODE_LINE 1: Renesas Electronics America LABEL-DATE CODE YRWK/REV#, LINE 2: BOM NAME Board Layout Figure 8. Silkscreen Top R12UZ0081EU0100 Rev.1.00 Page 10 of 17 May.6.20...
  • Page 11 ISL81801EVAL2Z 2. PCB Layout Guidelines Figure 9. Top Layer Figure 10. Second Layer (Solid Ground) R12UZ0081EU0100 Rev.1.00 Page 11 of 17 May.6.20...
  • Page 12 ISL81801EVAL2Z 2. PCB Layout Guidelines Figure 11. Third Layer Figure 12. Bottom Layer R12UZ0081EU0100 Rev.1.00 Page 12 of 17 May.6.20...
  • Page 13 ISL81801EVAL2Z 2. PCB Layout Guidelines Figure 13. Silkscreen Bottom R12UZ0081EU0100 Rev.1.00 Page 13 of 17 May.6.20...

  • Page 14: Typical Performance Curves

    ISL81801EVAL2Z 3. Typical Performance Curves Typical Performance Curves = 48V, T = 25°C, unless otherwise noted. Vin = 36V Vin = 48V Vin = 36V Vin = 48V Vin = 60V Vin = 80V Vin = 60V Vin = 80V Figure 15.
  • Page 15 ISL81801EVAL2Z 3. Typical Performance Curves = 48V, T = 25°C, unless otherwise noted. (Continued) Phase 1 50V/Div 500mV/Div Phase 2 50V/Div 200mV/Div 2A/Div 5A/Div 10µs/Div 2ms/Div Figure 21. Load Transient, V = 36V, I = 0A to 5A, Figure 20. Phase 1, Phase 2, V and Inductor Current, 2.5A/µs, CCM...
  • Page 16 ISL81801EVAL2Z 3. Typical Performance Curves = 48V, T = 25°C, unless otherwise noted. (Continued) Phase 1 50V/Div Phase 1 50V/Div Phase 2 50V/Div Phase 2 50V/Div 50V/Div 50V/Div 10A/Div 10A/Div 4ms/Div 100ms/Div Figure 26. Start-Up Waveform, V = 80V, I = 5A, CCM Figure 27.

  • Page 17: Revision History

    ISL81801EVAL2Z 4. Revision History Revision History Rev. Date Description 1.00 May.6.20 Initial release R12UZ0081EU0100 Rev.1.00 Page 17 of 17 May.6.20...
  • Page 18 Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products.
  • Page 19 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Renesas Electronics ISL81801EVAL2Z...

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