Renesas ZL9024MEVAL1Z User Manual
User’s Manual
ZL9024MEVAL1Z
User’s Manual: Evaluation Board
Industrial Analog and Power
Rev 0.00 Jan 2018
USER’S MANUAL
ZL9024MEVAL1Z
Evaluation Board
Jan 29, 2018
1. Overview
The ZL9024M is a 33A step-down DC/DC power supply module with an integrated digital PWM controller,
single-phase synchronous power switches, inductors, and passives. Only input/output capacitors and minimal passives
are needed to finish the design. 33A of continuous output current can be delivered without the need for airflow or a
heatsink. The ZL9024M uses ChargeMode™
single switching cycle.
The ZL9024MEVAL1Z evaluation board is a 3inx4.5in 6-layer FR4 board with 2oz. copper on surface layers and 1oz.
copper on buried layers. This evaluation board comes with placeholders for pin-strap resistor population to adjust
output voltage, switching frequency, and device PMBus™ address. More configurations, such as sequencing, DigitalDC™ (DDC) bus configuration and fault limits can be easily programmed or changed through the PMBus compliant
serial bus interface.
The optional ZLUSBEVAL3Z (USB to PMBus adapter) is provided with this evaluation board, which connects the
evaluation board to a PC to activate the PMBus communication interface. The PMBus command set is accessed by
using the PowerNavigator™ evaluation software from a PC running Microsoft Windows. The ZL9024MEVAL1Z can
operate in pin-strap mode without needing the ZLUSBEVAL3Z adapter or PMBus communication.
1.1 Key Features
•VIN range of 2.75V to 4V, V
• Programmable V
, margining, input and output UVP/OVP, I
OUT
and external synchronization
adjustable from 0.6V to 1.5V
OUT
control (ASCR) architecture, which responds to a transient load within a
limit, OTP/UTP, soft-start/stop, sequencing,
OUT
UG155
Rev.0.00
• Monitor: V
IN
, V
OUT
, V
DRV
, I
, temperature, duty cycle, switching frequency and faults
OUT
• ChargeMode control tunable with PMBus
• Mechanical switch for enable and power-good LED indicator
1.2 Specifications
This board has been configured for the following operating conditions by default:
•V
= 2.75V to 4V
IN
•V
•I
•f
OUT
= 33A
MAX
= 533kHz
SW
= 1.2V
• ASCR gain = 600, ASCR residual = 80
• On/off delay = 5ms; On/off ramp time = 5ms
1.3 Ordering Information
Part Number Description
ZL9024MEVAL1Z ZL9024M evaluation board, ZLUSBEVAL3Z adapter, USB cable
1.4 Related Literature
• For a full list of related documents, visit our website
• ZL9024M
product page
UG155 Rev.0.00 Page 2 of 20
Jan 29, 2018
ZL9024MEVAL1Z 1. Overview
=/0
9
287
9,1
9287
96(1
96(1
9
,1
30%XV
,QWHUIDFH
9''
9'59
&
287
N
6$/57
6'$
6&/
6*1' 3*1'
&
,1
9
''
&
9''
9021
Figure 1. ZL9024MEVAL1Z Block Diagram
1.5 Recommended Equipment
• DC power supply with two channels or two separate DC power supplies with minimum 6V/20A sourcing capacity
and 6V/0.5A sourcing capabilities, respectively
• Electronic load capable of sinking current up to 33A
• Digital Multimeters (DMMs)
• Oscilloscope with higher than 100MHz bandwidth
UG155 Rev.0.00 Page 3 of 20
Jan 29, 2018
ZL9024MEVAL1Z 2. Functional Description
2. Functional Description
The ZL9024MEVAL1Z provides all circuitry required to evaluate the features of the ZL9024M. A majority of the
features of the ZL9024M, such as compensation-free ChargeMode control, soft-start delay and ramp times, supply
sequencing and voltage margining are available on this evaluation board. For sequencing evaluation, the board can be
connected to any Intersil digital module evaluation board that supports the DDC bus.
Figure 3 on page 8
2.1 Operating Range
By default, the ZL9024M is configured to operate at V
4V. The board can also support a wider operating range to meet the requirements of specific applications. V
be adjusted from 0.6V to 1.5V. The load current range is from 0A to 33A. The f
tuned. However, to ensure sufficient stability margins, switching frequency and output capacitors can be selected
using the “ZL9024M Design Guide Matrix and Output Voltage Response” table in the ZL9024M
The ZL9024MEVAL1Z is capable of handling a 0A to 33A output current transient, in which the slew rate is less
than 2A/µs, such as electronic load. If the slew rate exceeds 2A/µs, then it may be necessary to increase the output
capacitance or change VOUT_OV_FAULT_LIMIT and VOUT_UV_FAULT_LIMIT values for proper operation.
Refer to “
If external synchronization is used, connect the SYNC test point to the external clock. Note that the external clock
signal should be active before the module is enabled.
and Figure 4 on page 9 show the ZL9024MEVAL1Z evaluation board.
= 1.2V, fSW = 533kHz. VIN ranges can be from 2.75V to
OUT
PMBus Option” on page 5 for more information.
and output voltage can also be
SW
OUT
datasheet.
can
2.2 Quick Start Guide
2.2.1 Pin-Strap Option
The ZL9024MEVAL1Z can be configured in pin-strap mode with standard 1% 0603 resistors. The PMBus
interface is not required to evaluate the ZL9024MEVAL1Z in pin-strap mode. Output voltage (V
switching frequency (f
resistors at placeholders provided in the evaluation board. By default, the evaluation board operates in pin-strap
mode and regulates at V
evaluate the ZL9024MEVAL1Z in pin-strap mode.
(1) Set the ENABLE switch to “DISABLE”.
(2) Connect the load to the VOUT lug connectors (J7 and J8).
(3) Connect the power supply to the VIN connectors (J3 and J4). Make sure the power supply is not enabled
when making the connections.
(4) Connect the VDD voltage supply to the VDD connectors (J9 and J10). Make sure the power supply is not
enabled when making the connections.
(5) Turn on the VIN power supply first, then turn on the VDD power supply.
(6) Set the ENABLE switch to “ENABLE”.
(7) Measure 1.2V V
(8) Observe the switching frequency of 533kHz at the probe points labeled “VSWH” (J15).
(9) To change V
OUT,
placeholder location on the bottom layer. Refer to the “Output Voltage Resistor Settings” table in the
ZL9024M
datasheet for recommended values. By default, VOUT_MAX is set to 110% of V
pin-strap resistor.
(10) To change the switching frequency, disconnect the board from the setup and populate a 1% standard 0603
resistor at the R2 placeholder location on the bottom layer. Refer to the “Switching Frequency Resistor
Settings” table in the ZL9024M
), and the device PMBus address can be changed by populating recommended
SW
= 1.2V, fSW = 533kHz, and PMBus address = 28h. Complete the following steps to
OUT
at the probe point labeled “VOUT” (J16).
OUT
disconnect the board from the setup and populate a 1% standard 0603 resistor at the R6
datasheet for recommended values.
),
OUT
set by the
OUT
UG155 Rev.0.00 Page 4 of 20
Jan 29, 2018
ZL9024MEVAL1Z 2. Functional Description
2.2.2 PMBus Option
The ZL9024MEVAL1Z can be evaluated for all features using the provided ZLUSBEVAL3Z dongle and
PowerNavigator evaluation software. PowerNavigator tutorial videos are available at
www.intersil.com/powernavigator
PMBus option.
(1) Install PowerNavigator software from the following website: www.intersil.com/powernavigator
(2) Set the ENABLE switch to “DISABLE”.
(3) Connect the load to the VOUT lug connectors (J7 and J8).
(4) Connect the power supply to the VIN connectors (J3 and J4). Make sure the power supply is not enabled
when making the connections.
(5) Connect the VDD voltage supply to the VDD connectors (J9 and J10). Make sure the power supply is not
enabled when making the connections.
(6) Connect the ZLUSBEVAL3Z dongle (USB to PMBus adapter) to the ZL9024MEVAL1Z board using the
6-pin male connector labeled “PMBus DONGLE IN”.
(7) Turn the power supply on.
(8) Connect the supplied USB cable from the computer USB port to the ZLUSBEVAL3Z dongle.
(9) Start PowerNavigator.
(10) It is optional to load a predefined setup from a configuration file using PowerNavigator. The ZL9024M
device on the board operates in pin-strap mode from factory default, but the user can modify the operating
parameters through the evaluation software or by loading a predefined set-up from a configuration file. A
sample “
Configuration File” on page 7 is provided and can be copied to a plain text editor to make desired
changes. The default pin-strap configurations will be overwritten if a user-defined configuration file is
loaded.
(11) Set the ENABLE switch to “ENABLE”. Alternatively, the PMBus ON_OFF_CONFIG and OPERATION
commands may be used from PowerNavigator to allow PMBus Enable.
(12) Monitor and configure the ZL9024MEVAL1Z board using the PMBus commands in the evaluation
software. To store the configuration changes, disable the module and use the command
STORE_USER_ALL. To restore factory default settings, disable the module and use the command
RESTORE_FACTORY and STORE_USER_ALL.
(13) For sequencing with the Digital-DC Bus (DDC) or to evaluate multiple Renesas digital power products
using a single ZLUSBEVAL3Z dongle, the ZL9024M can be daisy chained with other digital power
evaluation boards. The PMBus address can be changed by placing a 1% standard 0603 resistor at the R
placeholder location on the bottom layer. Refer to the “SMBus Address Resistor Selection” table in the
ZL9024M
datasheet for recommended values.
. Complete the following steps to evaluate the ZL9024MEVAL1Z with the
.
4
UG155 Rev.0.00 Page 5 of 20
Jan 29, 2018
ZL9024MEVAL1Z 3. Evaluation Board Information
VOUT
J12
47k
10m
J13
BSC010NE2LSI
Transient Load Pulse
Input
Transient Load
Monitor
3. Evaluation Board Information
If external synchronization is used, connect the SYNC test point to the external clock. Note that the external clock
signal should be active before the module is enabled.
3.1 V
Transient Response Check
OUT
The ZL9024MEVAL1Z board has a built-in transient load test circuit (see the schematic in Figure 2) allowing
transient load with a high slew rate. A 100A N-Channel MOSFET (Manufacturer PN: BSC010NE2LSI) is
connected across VOUT and PGND next to the remote voltage sensing location. A 10mΩ current-sense resistor
R
is used to monitor the drain-to-source current of the MOSFET. For a transient load test, inject the gate drive
16
pulse signal at J12. The load current can be monitored through J13. Because the MOSFET will operate in the
saturation region instead of the linear region when the gate turn-on signal is applied, the pulse width and duty cycle
of the gate signal must be limited small enough to avoid MOSFET overheating (recommended duty cycle should be
less than 2%). The amplitude of the gate driver pulse voltage can be adjusted to obtain a desired transient load
current step size.
Figure 2. Schematic for Transient Load Measurement
3.2 Thermal Considerations and Current Derating
Board layout is critical to make the module operate safely and deliver maximum allowable power. To work in the
high temperature environments and carry large currents, the board layout needs to be carefully designed to
maximize thermal performance. To achieve this, select enough trace width, copper weight, and the proper
connectors.
The ZL9024MEVAL1Z evaluation board is designed to run at 33A at room temperature without additional cooling
systems needed. However, if the output voltage is increased or the board is operated at elevated temperatures, then
the available current is derated. Refer to the derated current curves in the ZL9024M
maximum output current the evaluation board can supply.
module to measure peak junction temperature.
UG155 Rev.0.00 Page 6 of 20
Jan 29, 2018
datasheet to determine the
is measured by inserting a thermocouple inside the
JA
Loading...