Analog Devices ADP1055-EVALZ User Manual
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Analog Devices ADP1055-EVALZ User Manual

Analog Devices ADP1055-EVALZ User Manual

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Evaluating the 240 Watts

FEATURES

Full support evaluation kit for the
240 W full bridge topology (adjustable to phase shifted full
bridge topology)
Rated power of 12 V dc, 20 A
PMBus Revision 1.2 compliant with PEC and extended
manufacturer specific commands
32-bit password protection with command masking
64 address selections (16 base addresses, expandable to 64)
6 PWM control signals, 625 ps resolution
Duty cycle double update rate
Fast line voltage feedforward
Redundant programmable OVP
Frequency synchronization
Soft-start and soft-stop functionality
Droop current sharing
On-board tests for housekeeping functions
PMBus communication
Software GUI

EVALUATION KIT CONTENTS

ADP1055-EVALZ
evaluation board
ADP1055DC1-EVALZ
daughter card
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Isolated Power Supply with PMBus Interface
ADP1055

EVALUATION BOARD SETUP

Figure 1.
Rev. B | Page 1 of 43
ADP1055-EVALZ User Guide
ADP1055
Digital Controller for

ADDITIONAL EQUIPMENT NEEDED

2
The USB-I
C connector, ADP-I2C-USB-Z, with Driver CD
(must order separately from Analog Devices, Inc.)

GENERAL DESCRIPTION

This evaluation board, together with a daughter card, allows
you to evaluate the
With the USB to I
(GUI), the
ADP1055
with a PC via a USB port.
The evaluation board is set up to act as an isolated PSU with
a rated load of 12 V, 20 A from a 38 V dc to 60 V dc source.
Connectors on the evaluation board provide synchronization,
as well as share bus and PMBus™ interfaces, allowing direct
parallel evaluation when multiple evaluation boards are
connected in parallel to a common bus.
Multiple test points allow easy access to all critical points/pins.
ADP1055
Evaluation Board
ADP1055
as a power supply application.
2
C connector, and the graphical user interface
on the evaluation board can be interfaced
UG-710

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Summary of Contents for Analog Devices ADP1055-EVALZ

  • Page 1: Features

    ADP1055 The USB-I C connector, ADP-I2C-USB-Z, with Driver CD 240 W full bridge topology (adjustable to phase shifted full (must order separately from Analog Devices, Inc.) bridge topology) GENERAL DESCRIPTION Rated power of 12 V dc, 20 A This evaluation board, together with a daughter card, allows PMBus Revision 1.2 compliant with PEC and extended...

  • Page 2: Table Of Contents

    Caution ..................5 GUI 55s Settings File ..............26 Hardware ..................5 Schematics and Artwork ............... 31 Software GUI ................6 ADP1055-EVALZ Schematic ............ 31 Powering Up .................. 7 ADP1055-EVALZ Layout ............33 Evaluating the ADP1055..............9 ADP1055DC1-EVALZ Schematic ........... 36 PWM and SR Window ..............

  • Page 3: Evaluation Board Overview

    30 V. C6-13). Components U2 and U5 are half bridge 4 A drivers based on the Analog Devices, Inc., iCoupler technology that provides gate drive for driving the primary H bridge. Secondary side H bridge drivers consist of U20 and U21.

  • Page 4: Applications

    UG-710 ADP1055-EVALZ User Guide APPLICATIONS Table 1. Evaluation Board Connections High efficiency, high power density, isolated dc-to-dc power Connector Function supplies include VIN+, dc Input VIN−, ground return for dc input • Intermediate bus converters VOUT+, dc output • Paralleled power supply systems VOUT−, return for dc output...

  • Page 5: Getting Started

    ADP-I2C-USB-Z as shown in This evaluation board uses high voltages and currents. Extreme Figure 5. This must be ordered from Analog Devices. caution should be taken, especially on the primary side, to  Portable DMM (Fluke Corp.) for measuring up to 25 A dc ensure your safety.

  • Page 6: Software Gui

    UG-710 ADP1055-EVALZ User Guide Figure 6. Test Configuration for the Evaluation Board SOFTWARE GUI When the Total Phase USB Setup window appears, click Overview Next. Read the license agreement, check I accept the terms ADP1055 GUI is a free software tool for programming in the License Agreement, and then click Next.

  • Page 7: Powering Up

    ADP1055-EVALZ User Guide UG-710 A pop-up window shows a notification of successful guide by clicking on the leftmost question mark icon in the installation. top section of the GUI. Figure 12. Leftmost Icon Shows GUI Reference Guide POWERING UP Connect a dc source (voltage range of 38 V dc to 60 V dc) at the input terminals and an electronic load at the output terminals.
  • Page 8 UG-710 ADP1055-EVALZ User Guide Figure 15. Main Setup Window of the ADP1055 Figure 16. Monitor Window in the GUI For more information on the board settings, refer to the GUI reference guide (see Figure 12). Rev. B | Page 8 of 43...

  • Page 9: Evaluating The Adp1055

    ADP1055-EVALZ User Guide UG-710 EVALUATING THE ADP1055 The goal of this user guide is to familiarize you with the GUI and to describe the flexibility available with the extensive programming options provided by the ADP1055. Several test points on the evaluation board allow easy monitoring of the Figure 18.
  • Page 10 UG-710 ADP1055-EVALZ User Guide Volt Second Balance Tab Refer to the ADP1055 data sheet for detailed operation and manual setup of the volt second balance feature. It is recommended to use the Auto Setup feature to setup the PWMs in hard switching mode.

  • Page 11: Ctrl And Pson Window

    ADP1055-EVALZ User Guide UG-710 Synchronization Tab CTRL AND PSON WINDOW In this window, the configuration of the hardware and software PSON can be programmed. Additional settings, such as the extended slave address selection, voltage overshoot (regulation timeout speed) and write protect mode, can be selected.

  • Page 12: Soft-Start Window

    UG-710 ADP1055-EVALZ User Guide SOFT-START WINDOW To facilitate a proper soft start from the precharge/prebias condition where the output bus has not yet discharged to zero, This window programs PMBUS functions TON_DELAY, ADP1055 uses the SR phase in and SR transition function to TON_RISE (the soft-start time), and TON_MAX.

  • Page 13: Soft-Stop Window

    ADP1055-EVALZ User Guide UG-710 SOFT-STOP WINDOW The soft-stop process starts once the SRs have finished phasing in. An additional option of extended SR on time can be selected Similar to the soft-start window, the soft-stop window features to ensure that the output voltage stays at 0 V.

  • Page 14: Fault Response Window

    UG-710 ADP1055-EVALZ User Guide FAULT RESPONSE WINDOW The Fault Response window programs the fault response for all the voltage, current, temperature, and GPIO faults, 22 in total. Each fault has a configuration with a programmable debounce time, and the response to the fault followed by the delay time between consecutive soft starts if the PSU is shutdown as a result of the fault action.

  • Page 15: Vin Window

    ADP1055-EVALZ User Guide UG-710 Figure 42. IIN_OC_FAULT under Short-Circuit Figure 44. Line Voltage Feedforward DISABLED, 5 A Load Fault Response Set to Shut down and Retry 3 Times Green Trace: AC Coupled Output Voltage Green Trace: Output Voltage Blue Trace: Input Voltage...

  • Page 16: Added Figure 47; Renumbered Sequentially

    UG-710 ADP1055-EVALZ User Guide Figure 47. Voltage Line Feedforward; Red Trace: Input Voltage 10 V/Div; Green Trace: AC-Coupled Output Voltage; Figure 49. IIN Window Blue and Yellow Traces: OUTB and OUTC PWMs The IN_OC_FAULT is an accurate fault whose threshold can be...

  • Page 17: Iout Window

    ADP1055-EVALZ User Guide UG-710 IOUT WINDOW The IOUT window sets thresholds for the output current. Thresholds for output over current, under current, and constant current can be programmed via this window. Figure 51. Additional Settings of VOUT Window The settings can be changed in a simple drag-and-drop fashion and or by selecting the value from the combo box.

  • Page 18: Pout Window

    UG-710 ADP1055-EVALZ User Guide the RAM of the IC, but need to be saved to EEPROM for permanent storage. Figure 56. IOUT_OC_FAULT PSU is Set to Enter Constant Current Mode at 27 A. Fault Response Set to Wait for a Debounce of 5 Seconds, Shutdown, and Retry Indefinitely.

  • Page 19: Pgood And Gpio Windows

    ADP1055-EVALZ User Guide UG-710 PGOOD AND GPIO WINDOWS 32-BIT KEYCODE The PGOOD and GPIO windows go hand in hand. Several ADP1055 has a 32-bit password protection and extended flags, such as IOUT_OC_FAULT and VOUT_OV, can be set command masking set.

  • Page 20: Active Clamp Snubber

    UG-710 ADP1055-EVALZ User Guide Figure 67. Lock Masked Commands Icon (Rightmost Icon) ACTIVE CLAMP SNUBBER GPIO3 and GPIO4 can be configured to have the special function of an active clamp snubber. In this feature, GPIO3 and GPIO4 act as PWM signals that are triggered off a reference PWM which is either ...
  • Page 21 ADP1055-EVALZ User Guide UG-710 Figure 73. Active Clamp Snubber Enabled, Zoomed In, 20 A Load Figure 75. Active Clamp Snubber Enabled, Zoomed In, 10 A Load 50 ns Delay, 380 ns Snubber on Time 50 ns Delay, 380 ns Snubber on Time Green Trace: Drain—Source Voltage of Low Side SR FET...

  • Page 22: Digital Control Loop

    UG-710 ADP1055-EVALZ User Guide DIGITAL CONTROL LOOP Control Loop Configuration The control loop configuration procedures can be shown as a series of three steps. The board parameters are set, including topology, turn ratio of main transformer, output LC filter and output voltage feedback network.

  • Page 23: Changes To Figure 83 Caption And Figure 84 Caption

    ADP1055-EVALZ User Guide UG-710 Transient Response for the Load Step A dynamic electronic load can be connected to the output of the evaluation board to evaluate the transient response. Set up an oscilloscope to capture the transient waveform of the power supply output.

  • Page 24: Changes To Figure 85 Caption And Figure 86 Caption

    UG-710 ADP1055-EVALZ User Guide Light Load Efficiency Optimization ADP1055 can be programmed to optimize performance when the output current drops below a certain level. The light load and deep light load mode thresholds are set in a manner to reduce losses and increase efficiency. A hysteresis for light load mode and deep light load mode is provided on the thresholds to avoid oscillations.

  • Page 25: Efficiency Curves

    ADP1055-EVALZ User Guide UG-710 EFFICIENCY CURVES THERMAL PERFORMANCE 94.18% EFFICIENCY LOAD CURRENT (A) Figure 88. Efficiency Curve at 36 V DC, 48 V DC, 60 V DC, and 75 V DC Input Figure 90. Thermal Image at 48 V DC Input, 20 A Load, No Airflow,...

  • Page 26: Gui 55S Settings File

    UG-710 ADP1055-EVALZ User Guide GUI 55S SETTINGS FILE Copy the contents below into a text file and rename it with using an extension of .55s. Load this file in the GUI using the Load settings from file option. Ensure that the last line of the .55s file does not have a carriage return.
  • Page 27 ADP1055-EVALZ User Guide UG-710 Reg(60 h) = 0000h - TON_DELAY Reg(61 h) = 0028h - TON_RISE Reg(62 h) = 0032h - TON_MAX_FAULT_LIMIT Reg(63 h) = 38h - TON_MAX_FAULT_RESPONSE Reg(64 h) = 0000h - TOFF_DELAY Reg(65 h) = 000Ah - TOFF_FALL...
  • Page 28 UG-710 ADP1055-EVALZ User Guide Reg(FE24 h) = 88h - SR2_DEAD_TIME Reg(FE25 h) = C0h - VSBAL_SETTING Reg(FE26 h) = 23h - VSBAL_OUTA_B Reg(FE27 h) = 32h - VSBAL_OUTC_D Reg(FE28 h) = C8h - VSBAL_SR1_2 Reg(FE29 h) = 04h - FFWD_SETTING...
  • Page 29 ADP1055-EVALZ User Guide UG-710 Reg(FE53 h) = DBh - MODULATION_LIMIT Reg(FE54 h) = 00h - Reserved Reg(FE55 h) = 42h - SYNC Reg(FE56 h) = 69h - DUTY_BAL_EDGESEL Reg(FE57 h) = F1h - DOUBLE_UPD_RATE Reg(FE58 h) = 83B8h - VIN_SCALE_MONITOR...
  • Page 30 UG-710 ADP1055-EVALZ User Guide R3 = 0 KOhm R4 = 0 KOhm C5 = 0 µF C6 = 0 µF R6 = 25 KOhm R7 = 1 KOhm Topology = 0 (0 = Full Bridge: 1 = Half Bridge: 2 = Two Switch Forward: 3 = Interleaved Two...

  • Page 31: Revision History 4/15-Rev. A To Rev. B Changes To Figure 91

    ADP1055-EVALZ User Guide UG-710 SCHEMATICS AND ARTWORK ADP1055-EVALZ SCHEMATIC Figure 91. ADP1055 Evaluation Board Schematic—Part 1 Rev. B | Page 31 of 43...

  • Page 32: Changes To Figure 92

    UG-710 ADP1055-EVALZ User Guide Figure 92. ADP1055 Evaluation Board Schematic—Part 2 Rev. B | Page 32 of 43...

  • Page 33: Adp1055-Evalz Layout

    ADP1055-EVALZ User Guide UG-710 ADP1055-EVALZ LAYOUT Figure 93. PCB Assembly Top Figure 94. PCB Layout, Silkscreen Layer Figure 95. PCB Layout, Top Layer Rev. B | Page 33 of 43...
  • Page 34 UG-710 ADP1055-EVALZ User Guide Figure 96. PCB Layout, Layer 2 Figure 97. PCB Layout, Layer 3 Figure 98. PCB Layout, Layer 4 Rev. B | Page 34 of 43...
  • Page 35 ADP1055-EVALZ User Guide UG-710 Figure 99. PCB Layout, Bottom Layout Figure 100. PCB Assembly Bottom Rev. B | Page 35 of 43...

  • Page 36: Adp1055Dc1-Evalz Schematic

    UG-710 ADP1055-EVALZ User Guide ADP1055DC1-EVALZ SCHEMATIC Figure 101. ADP1055 Daughter Card Schematic Rev. B | Page 36 of 43...

  • Page 37: Adp1055Dc1-Evalz Layout

    ADP1055-EVALZ User Guide UG-710 ADP1055DC1-EVALZ LAYOUT Figure 102. PCB Assembly, Top Figure 105. PCB Layout, Layer 2 Figure 106. PCB Layout, Layer 3 Figure 103. PCB Layout, Silkscreen Layer Top Figure 104. PCB Layout, Top Layer Figure 107. PCB Layout, Bottom Layer...
  • Page 38 UG-710 ADP1055-EVALZ User Guide Figure 108. PCB Layout, Silkscreen Bottom Figure 109. PCB Assembly, Bottom Rev. B | Page 38 of 43...

  • Page 39: Changes To Table 5

    ADP1055-EVALZ User Guide UG-710 BILL OF MATERIALS The section provides the components list for the evaluation board followed by the components list for the daughter card. Table 5. ADP1055 Evaluation Board Components List Qty. Reference Value Description Manufacturer Part Number...
  • Page 40 UG-710 ADP1055-EVALZ User Guide Qty. Reference Value Description Manufacturer Part Number C137 4.7 µF CAP CER 4.7 µF 50 V 10% X7R SMD Kemet C1210C475K5RACTU C138 0.1 µF CAP CER 0.1 µF 25 V 10% X7R SMD Murata C1608X7R1E105K C141 10 µF...
  • Page 41 ADP1055-EVALZ User Guide UG-710 Qty. Reference Value Description Manufacturer Part Number RES 10 kΩ 1/ 4 W 1% SMD Stackpole RNCP0805FTD10K0 0.001 RES 0.001 Ω 21% SMD Bourns Inc CRF2512-FV-R001ELF RES 2.00 Ω 1/8 W 1% SMD Yageo RC0805FR-072RL RES 10 kΩ ¼ W 1% SMD...
  • Page 42 UG-710 ADP1055-EVALZ User Guide Qty. Reference Value Description Manufacturer Part Number R165 RES 10.0 kΩ 1/4 W 1% SMD Stackpole RNCP0805FTD10K0 R166 RES 10.0 kΩ 1/4 W 1% SMD Stackpole RNCP0805FTD10K0 R167 RES 1.0 Ω 1/4 W 1% SMD Stackpole...
  • Page 43 By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you have read and agreed to the Agreement.

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