MaxLinear MxL7213 User manual

MaxLinear Confidential
TBD/18 000UMR02 i
• www.maxlinear.com • 000UMR02
MxL7213
13A Dual Phase
EVB User Manual

MxL7213 13A Dual Phase EVB User Manual Revision History
4/23/19 000UMR02 ii
Revision History
Document No. Release Date Change Description
000UMR02 4/23/19 Initial Release

MxL7213 13A Dual Phase EVB User Manual Table of Contents
4/23/19 000UMR02 iii
Table of Contents
Introduction......................................................................................................................................................... 1
Quick EVB Set Up and Start Up....................................................................................................................................1
Factory Settings ...................................................................................................................................................1
Quick Start Up ......................................................................................................................................................1
Reference Documentation ................................................................................................................................. 3
Ordering Information.......................................................................................................................................... 3
Evaluation Board Overview ............................................................................................................................... 4
Configuration and I/O Interfaces ....................................................................................................................... 5
MODE............................................................................................................................................................................5
RUN1, RUN2.................................................................................................................................................................5
TRACK1 SEL, TRACK2 SEL ........................................................................................................................................5
CLKOUT PHASE...........................................................................................................................................................5
EXTVCC........................................................................................................................................................................5
TEMP ............................................................................................................................................................................5
PGOOD1, PGOOD2......................................................................................................................................................5
SW1, SW2.....................................................................................................................................................................5
Set-Up Options.................................................................................................................................................... 6
Jumper JP1 MODE .......................................................................................................................................................6
Jumpers JP2 RUN1 and JP3 RUN2..............................................................................................................................6
Jumper JP4 TRACK1 SEL ............................................................................................................................................6
Jumper JP5 TRACK2 SEL ............................................................................................................................................7
Jumper JP6 CLKOUT PHASE ......................................................................................................................................7
Test Interfaces..................................................................................................................................................... 8
Load Transient Circuit ...................................................................................................................................................8
Differential Sensing Selection .......................................................................................................................................8
2 Phase, Single Output Select ......................................................................................................................................9
Test Points ....................................................................................................................................................................9
Performance...................................................................................................................................................... 10
Efficiency .....................................................................................................................................................................10
Load Transient Response ...........................................................................................................................................11
Output Ripple ..............................................................................................................................................................12
MxL7213EVB Schematic .................................................................................................................................. 13
MxL7213EVB PCB Layers ................................................................................................................................ 14

MxL7213 13A Dual Phase EVB User Manual Table of Contents
4/23/19 000UMR02 iv
MxL7213EVB Bill of Materials.......................................................................................................................... 16

MxL7213 13A Dual Phase EVB User Manual List of Figures
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List of Figures
Figure 1: Monitoring VIN and VOUT.........................................................................................................................................2
Figure 2: Top View of MxL7213 13A Dual Phase LGA EVB ..................................................................................................2
Figure 3: Block Diagram MxL7213 Two Channel EVB...........................................................................................................4
Figure 4: Load Transient Circuit .............................................................................................................................................8
Figure 5: Differential Sensing Selection .................................................................................................................................8
Figure 6: Single Output Selection...........................................................................................................................................9
Figure 7: Channel 1 Measured Efficiency (VOUT = 3.3V, fSW = 750kHz, Ch 2 Disabled).....................................................10
Figure 8: Channel 2 Measured Efficiency (VOUT = 5.0V, fSW = 750kHz, Ch 1 Disabled).....................................................10
Figure 9: Channel 1 Load Transient Response (VOUT = 3.3V, VIN = 12V)...........................................................................11
Figure 10: Channel 2 Load Transient Response (VOUT = 5V, VIN = 12V)............................................................................11
Figure 11: Channel 1 Output Voltage Ripple (VIN = 12V, VOUT = 3.3V, Load = 13A) ..........................................................12
Figure 12: Channel 2 Output Voltage Ripple (VIN = 12V, VOUT = 5.0V, Load = 13A) ..........................................................12
Figure 13: EVB Schematic ...................................................................................................................................................13
Figure 14: EVB PCB LGA Silkscreen Top............................................................................................................................14
Figure 15: EVB PCB LGA, Layer 1.......................................................................................................................................14
Figure 16: EVB PCB LGA Layer 2........................................................................................................................................14
Figure 17: EVB PCB LGA Layer 3........................................................................................................................................14
Figure 18: EVB PCB LGA Layer 4........................................................................................................................................15
Figure 19: EVB PCB LGA Silkscreen Bottom.......................................................................................................................15

MxL7213 13A Dual Phase EVB User Manual List of Tables
4/23/19 000UMR02 vi
List of Tables
Table 1: Evaluation Board Ordering Part Number ................................................................................................ 3
Table 2: Factory Settings...................................................................................................................................... 6
Table 3: JP1 Options ............................................................................................................................................ 6
Table 4: JP2, JP3 Options .................................................................................................................................... 6
Table 5: JP4 Options ............................................................................................................................................ 6
Table 6: JP5 Options ............................................................................................................................................ 7
Table 7: JP6 Options ............................................................................................................................................ 7
Table 8: EVB LGA Bill of Materials ..................................................................................................................... 16

MxL7213 13A Dual Phase EVB User Manual Introduction
4/23/19 000UMR02 1
Introduction
The MxL7213 evaluation board provides a platform to evaluate the features and performance of the MxL7213. The
MxL7213 is a dual 13A Power Module optimized for powering Telecom, Networking and Industrial equipment. There are
multiple EVBs for the MxL7213. This manual covers the 13A Dual Phase LGA Evaluation Boards.
Quick EVB Set Up and Start Up
Factory Settings
In addition to utilizing the 4.5V to 18V input voltage range and dual 13A maximum load current rating capabilities of the
MxL7213 Power Module, the Evaluation Board has been set up with the factory default configurations shown below for
quick set up and operation. Do not exceed the EVB maximum load current rating.
The factory default configuration (Table 2) for the MxL7213 Evaluation Board is:
■VOUT1 = 3.3V ±1.5%
■VOUT2 = 5.0V ±1.5%
■750kHz Switching Frequency
■CCM mode. For other modes, see Jumper JP1 MODE.
■Run is enabled for both channels. See Jumpers JP2
RUN1 and JP3 RUN2.
■Soft-start is selected for both channels. See Jumper
JP4 TRACK1 SEL and Jumper JP5 TRACK2 SEL.
■CLKOUT phase is 90 degrees, see Jumper JP6
CLKOUT PHASE.
Quick Start Up
To quickly see the regulator in operation:
1. Use the factory settings and default configuration. If
other settings or components are desired, apply them
before the next steps and see Set-Up Options for more.
2. Connect a turned-off power supply that is within a VIN
specification of 5.5V(1) to 18V, (12V typical) to VIN and
GND with short / thick leads. Use test pins VIN+ and
VIN- to monitor VIN and GND respectively. See
locations in Figure 1.
3. For the channel 1 output, connect an electronic load
initially set to 0A, that will be no more than the above
maximum IOUT (13A ), to VOUT1 and GND with short /
thick leads. Use test pins VO1+ and VO1- to monitor
VOUT1 and GND respectively. See locations in
Figure 1.
4. For the channel 2 output, connect an electronic load
initially set to 0A, that will be no more than the above
maximum IOUT (13A ), to VOUT2 and GND with short /
thick leads. Use test pins VO2+ and VO2- to monitor
VOUT2 and GND respectively. See locations in
Figure 1.
5. Turn on the power supply and check VOUT of both
channels. The EVB will power up and (factory default)
regulate the channel 1 output at 3.3V ±1.5% (3.251V to
3.349V) and channel 2 output at 5.0V ±1.5% (4.925V
to 5.075V). Output ripple should be observed using a
BNC cable connected to a scope at J1 for channel 1
and J2 for channel 2.
6. Set or vary the load (do not exceed the maximum IOUT)
and check VOUT and other desired performance levels
such as regulation and efficiency.
See Configuration and I/O Interfaces and Load Transient
Circuit for more on testing and monitoring. For Single Rail
Dual Phase 26A Operation and to vary VOUT see 2 Phase,
Single Output Select.
1. VIN of 6V or greater is required for a VOUT = 5.5V.

MxL7213 13A Dual Phase EVB User Manual Quick EVB Set Up and Start Up
4/23/19 000UMR02 2
Figure 1: Monitoring VIN and VOUT
Figure 2: Top View of MxL7213 13A Dual Phase LGA EVB
A
LOAD
+-
ALOAD
-+
V+- VV-+ V
V
VIN
+
-
+
-
A

MxL7213 13A Dual Phase EVB User Manual Reference Documentation
4/23/19 000UMR02 3
Reference Documentation
Please refer to the MxL7213 Data Sheet for additional information about the MxL7213, including efficiency curves for this
configuration with VIN = 12V. The datasheet also includes a full list of IC features, pinout, pin descriptions, typical
performance characteristics and external component calculations. This manual is meant to be used in conjunction with the
datasheet.
This manual provides EVB schematics, PCB layout and bill of materials that can be utilized to assist in your board design.
The schematics are also available on the MxL7213 product page.
Ordering Information
2. Refer to www.maxlinear.com/MxL7213 for most up-to-date Ordering Information.
Table 1: Evaluation Board Ordering Part Number
Power Module Evaluation Board Description
MXL7213-AYA-T MXL7213-EVK-000-B2 MxL7213 LGA Power Module Dual-Phase EVB

MxL7213 13A Dual Phase EVB User Manual Evaluation Board Overview
4/23/19 000UMR02 4
Evaluation Board Overview
The block diagram shown in Figure 3 illustrates the connection points for the VIN, VOUT1, VOUT2, TRACK, MODE_PLLIN
and RUN pins.
Figure 3: Block Diagram MxL7213 Two Channel EVB
VOUT1
VOUT2
CLKOUT
RUN2
TRACK2
MODE
RUN1
TRACK1
VIN
TRACK1
SELECT
JUMPER
(JP4)
RUN1
SELECT
JUMPER
(JP2)
MODE
SELECT
JUMPER
(JP1)
TRACK2
SELECT
JUMPER
(JP5)
RUN2
SELECT
JUMPER
(JP3)
CLKOUT
SELECT
JUMPER
(JP6)
OUTPUT
CONFIG
OPTION
DIFF
SENSE
OPTION
J1
VOUT1
CONNECTOR
J2
VOUT2
CONNECTOR
J3
IOSTEP
CONNECTOR
J21
VOUT2
CONNECTOR
J6
VOUT1
CONNECTOR
VIN
CONNECTOR
J4
MxL7213
VOUT1 VOUT2
TRANSIENT LOAD
CIRCUIT

MxL7213 13A Dual Phase EVB User Manual Configuration and I/O Interfaces
4/23/19 000UMR02 5
Configuration and I/O Interfaces
MODE
The MODE (JP1) jumper is provided for overall device configuration:
Force Continuous Mode, Pulse-Skipping Mode and External Synchronization are selectable.
RUN1, RUN2
A RUN jumper is provided for both channels (JP2 for RUN1 and JP3 for RUN2).
TRACK1 SEL, TRACK2 SEL
A TRACK jumper is provided for both channels.
VOUT, EXT and SOFTSTART are selectable.
Test points are allocated for probing of TRACK1 (JP4) and TRACK2 (JP5).
CLKOUT PHASE
A CLKOUT (JP6) jumper is provided for clock phase selection.
60, 90 or 120 degrees of phase offset is configurable.
EXTVCC
An EXTVCC test point (J18) is provided to monitor or inject EXTVCC.
TEMP
A TEMP test point (E15) is provided to monitor temperature.
PGOOD1, PGOOD2
A PGOOD test point is provided for both channels (E3 for PGOOD1 and E12 for PGOOD2).
Both PGOOD signals are tied to INTVCC through 10kΩ resistors.
SW1, SW2
A SW test point is provided for both switching signals (TP1 for SW1 and TP2 for SW2).

MxL7213 13A Dual Phase EVB User Manual Set-Up Options
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Set-Up Options
Jumpers are factory installed per Table 2 to configure the EVB for operation. Jumper and testing options are described in
the next sections. Refer to the product datasheet for additional information.
Jumper JP1 MODE
Jumpers JP2 RUN1 and JP3 RUN2
Jumper JP4 TRACK1 SEL
Table 5: JP4 Options
Table 2: Factory Settings
Jumper Label Factory Setting Description
JP1 MODE Jumper 7-8 CCM
JP2 RUN1 Jumper 2-3 On
JP3 RUN2 Jumper 2-3 On
JP4 TRACK1 Jumper 1-2 Soft-Start
JP5 TRACK2 Jumper 5-6 Soft-Start
JP6 CLKOUT PHASE Jumper 2-3 90°
Table 3: JP1 Options
Jumper Options Description
Jumper 1-2 Soft-Start. MODE_PLLIN connected to CLKIN.
Jumper 3-4 Pulse Skipping. MODE_PLLIN connected to INTVCC.
Jumper 5-6 Pulse Skipping. MODE_PLLIN floating.
Jumper 7-8 CCM. MODE_PLLIN connected to GND.
Table 4: JP2, JP3 Options
Jumper Options Description
Jumper 1-2 Off. RUN1/2 connected to GND.
Jumper 2-3 On. RUN1/2 connected to VIN.
Jumper Options Description
Jumper 1-2 Soft-Start. TRACK1 connected to cap to GND.
Jumper 2-3 TRACK1 connected to 60.4kΩ resistor to GND and TRACK test point.

MxL7213 13A Dual Phase EVB User Manual Jumper JP5 TRACK2 SEL
4/23/19 000UMR02 7
Jumper JP5 TRACK2 SEL
Jumper JP6 CLKOUT PHASE
Table 6: JP5 Options
Jumper Options Description
Jumper 1-2 TRACK2 connected to VOUT1.
Jumper 3-4 EXT. TRACK2 connected to 60.4kΩ resistor to GND and TRACK2 test point.
Jumper 5-6 Soft-Start. TRACK2 connected to cap to GND.
Table 7: JP6 Options
Jumper Options Description
Jumper 1-2 120°
Jumper 2-3 90°
Jumper 3-4 60°

MxL7213 13A Dual Phase EVB User Manual Test Interfaces
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Test Interfaces
Load Transient Circuit
A load transient circuit is provided to allow optional testing of load transients. The IOSTEP clock input is used to drive the
transient signal. The load step generated by the FET (Q1) is very fast; the step slew rate is >40A/µs for a 6.5A transient
load test case.
To measure load transient response for either channel, use the circuit shown in Figure 4. To test CH1, populate R34 and
depopulate R35 and apply a small duty cycle pule signal to IOSTEP CLK input (~ 1%). Adjust the amplitude of the IOSTEP CLK
pulse to set the load current. Start at a pulse amplitude of 2V and increase while monitoring the IOSTEP (J3) voltage. The load
current at IOSTEP (J3) is 15mV/A. For an example, a 6.5mA load will occur when a 97.5mV pulse is observed at J3.
To test load transient response on CH2, depopulate R34 and populate R35 and repeat procedure.
Figure 4: Load Transient Circuit
Differential Sensing Selection
4 x 0603 resistor jumpers are available to test differential sensing.
Figure 5: Differential Sensing Selection

MxL7213 13A Dual Phase EVB User Manual 2 Phase, Single Output Select
4/23/19 000UMR02 9
2 Phase, Single Output Select
The MxL7213 can be configure for single rail dual phase 26A operation and 4 x 0603 resistor jumpers allow VOUT1 /
VOUT2 together to output 26 Amps. This can be accomplished by removing both R7 and R19 and installing 0 ohm resistors
on R14, R17, R28 and R39.
Figure 6: Single Output Selection
The output voltage for the single rail dual phase 26A mode is set by the equation:
Test Points
Test points are available for all critical signals. See the schematic to see the available test points.
VOUT 0.6V160.4k
R25
-------------
+
 
 
=

MxL7213 13A Dual Phase EVB User Manual Performance
4/23/19 000UMR02 10
Performance
Efficiency
Figure 7: Channel 1 Measured Efficiency (VOUT = 3.3V, fSW = 750kHz, Ch 2 Disabled)
Figure 8: Channel 2 Measured Efficiency (VOUT = 5.0V, fSW = 750kHz, Ch 1 Disabled)
75
80
85
90
95
100
012345678910111213
Efficiency (%)
Load Current (A)
VIN = 5.5V, VOUT = 3.3V
VIN = 12V, VOUT = 3.3V
VIN = 16V, VOUT = 3.3V
VIN = 18V, VOUT = 3.3V
75
80
85
90
95
100
012345678910111213
Efficiency (%)
Load Current (A)
VIN = 6.0V, VOUT = 5.0V
VIN = 12V, VOUT = 5.0V
VIN = 16V, VOUT = 5.0V
VIN = 18V, VOUT = 5.0V

MxL7213 13A Dual Phase EVB User Manual Load Transient Response
4/23/19 000UMR02 11
Load Transient Response
Figure 9: Channel 1 Load Transient Response (VOUT = 3.3V, VIN = 12V)
Figure 10: Channel 2 Load Transient Response (VOUT = 5V, VIN = 12V)
3.3V Output (20MHz BW)
No Load
6.5A Load
No Load
6.5A Load
5.0V Output (20MHz BW)

MxL7213 13A Dual Phase EVB User Manual Output Ripple
4/23/19 000UMR02 12
Output Ripple
3. Ripple waveform shown, measured at VOUT1 BNC (J1), is affected by 1uF cap C13. The ripple waveform characteristics ideally should be observed at
the output capacitor closest to the MxL7213, COUT5.
Figure 11: Channel 1 Output Voltage Ripple (VIN = 12V, VOUT = 3.3V, Load = 13A)
4. Ripple waveform shown, measured at VOUT2 BNC (J2), is affected by 1uF cap C14. The ripple waveform characteristics ideally should be observed at
the output capacitor closest to the MxL7213, COUT4.
Figure 12: Channel 2 Output Voltage Ripple (VIN = 12V, VOUT = 5.0V, Load = 13A)
Channel 1, 3.3V Output (20MHz BW)
Channel 2, 5.0V Output (20MHz BW)

MxL7213 13A Dual Phase EVB User Manual MxL7213EVB Schematic
4/23/19 000UMR02 13
MxL7213EVB Schematic
Figure 13: EVB Schematic

MxL7213 13A Dual Phase EVB User Manual MxL7213EVB PCB Layers
4/23/19 000UMR02 14
MxL7213EVB PCB Layers
Figure 14: EVB PCB LGA Silkscreen Top Figure 15: EVB PCB LGA, Layer 1
Figure 16: EVB PCB LGA Layer 2 Figure 17: EVB PCB LGA Layer 3