Cypress MB39C326-EVBSK-01 User manual

MB39C326-EVBSK-01/02
Small size Evaluation Board of 6MHz Buck-boost
DC/DC Converter IC
Operation Manual
Publication Number MB39C326-EVBSK-01/02_SS901-00022 Revision 2.0 Issue Date June 19, 2015

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Preface
This manual explains how to use the evaluation board. Be sure to read this manual before using the product. For this
product, please consult with sales representatives or support representatives.
Handling and use
Handling and use of this product and notes regarding its safe use are described in the manuals.
Follow the instructions in the manuals to use this product.
Keep this manual at hand so that you can refer to it anytime during use of this product.
Notice on this document
All information included in this document is current as of the date it is issued. Such information is subject to change
without any prior notice.
Please confirm the latest relevant information with the sales representatives.

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Caution of the products described in this document
The following precautions apply to the product described in this manual.
WARNING
Indicates a potentially hazardous situation which could result in death or serious injury and/or a fault in
the user’s system if the product is not used correctly.
Electric shock,
Damage
Before performing any operation described in this manual, turn off all the power supplies to the system.
Performing such an operation with the power on may cause an electric shock or device fault.
Electric shock,
Damage
Once the product has been turned on, do not touch any metal part of it.
Doing so may cause an electric shock or device fault.
CAUTION
Indicates the presence of a hazard that may cause a minor or moderate injury, damages to this product or
devices connected to it, or may cause to loose software resources and other properties such as data, if the
device is not used appropriately.
Cuts, Damage
Before moving the product, be sure to turn off all the power supplies and unplug the cables. Watch your
step when carrying the product. Do not use the product in an unstable location such as a place exposed to
strong vibration or a sloping surface. Doing so may cause the product to fall, resulting in an injury or
fault.
Cuts
The product contains sharp edges that are left unavoidably exposed, such as jumper plugs.
Handle the product with due care not to get injured with such pointed parts.
Damage
Do not place anything on the product or expose the product to physical shocks. Do not carry the product
after the power has been turned on.
Doing so may cause a malfunction due to overloading or shock.
Damage
Since the product contains many electronic components, keep it away from direct sunlight, high
temperature, and high humidity to prevent condensation. Do not use or store the product where it is
exposed to much dust or a strong magnetic or electric field for an extended period of time. Inappropriate
operating or storage environments may cause a fault.
Damage
Use the product within the ranges given in the specifications.
Operation over the specified ranges may cause a fault.
Damage
To prevent electrostatic breakdown, do not let your finger or other object come into contact with the
metal parts of any of the connectors. Before handling the product, touch a metal object (such as a door
knob) to discharge any static electricity from your body.
Damage
When turning the power on or off, follow the relevant procedure as described in this document. Before
turning the power on, in particular, be sure to finish making all the required connections. Furthermore,
be sure to configure and use the product by following the instructions given in this document. Using the
product incorrectly or inappropriately may cause a fault.
Damage
Because the product has no casing, it is recommended that it be stored in the original packaging.
Transporting the product may cause a damage or fault. Therefore, keep the packaging materials and use
them when re-shipping the product.

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Table of Contents
1. Description ..................................................................................................................................... 5
2. Evaluation Board Specification ....................................................................................................... 5
3. Block Diagram ................................................................................................................................ 6
4. PIN Descriptions ............................................................................................................................. 8
4.1 Input/Output Pin Descriptions .............................................................................................. 8
4.2 Jumper Descriptions............................................................................................................ 8
4.3 Setup and Verification ......................................................................................................... 8
5. Component and Wiring Layout ....................................................................................................... 9
5.1 Component Layout .............................................................................................................. 9
5.2 Wiring Layout .................................................................................................................... 11
6. Schematic Circuit.......................................................................................................................... 12
7. Component List ............................................................................................................................ 14
8. Evaluation Board Picture .............................................................................................................. 15
9. Ordering Information ..................................................................................................................... 16
10. Major Changes ............................................................................................................................. 17
Figures
Figure 1-1 Board Outline ............................................................................................................................ 5
Figure 3-1 Block Diagram for EVBSK-01 ................................................................................................... 6
Figure 3-2 Block Diagram for EVBSK-02 ................................................................................................... 7
Figure 4-1 Image of Connection ................................................................................................................. 8
Figure 5-1 Component Layout (Layer 1) .................................................................................................... 9
Figure 5-2 Component Layout (Layer 2, Top View) .................................................................................. 10
Figure 5-3 Wiring Layout (Layer 1) ............................................................................................................ 11
Figure 5-4 Wiring Layout (Layer 2, Top View) ........................................................................................... 11
Figure 6-1 Schematic Circuit for Power Save Mode ................................................................................. 12
Figure 6-2 Schematic Circuit for Fixed PWM Mode.................................................................................. 13
Figure 8-1 Picture of MB39C326-EVBSK-01 ............................................................................................ 15
Figure 8-2 Picture of MB39C326-EVBSK-02 ............................................................................................ 15
Tables
Table 2-1 Evaluation Board Specification ................................................................................................... 5
Table 4-1 Input/Output Pin Descriptions ..................................................................................................... 8
Table 4-2 Jumper Descriptions ................................................................................................................... 8
Table 7-1 Component List ........................................................................................................................ 14
Table 9-1 Ordering Information ................................................................................................................. 16

MB39C326-EVB-01/02
Small size Evaluation Board of 6MHz Buck-boost
DC/DC converter IC
Operation Manual
MB39C326-EVBSK-01/02_SS901-00022-2v0-E, June 19, 2015 5
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1. Description
The MB39C326-EVBSK-01/02 is the small size evaluation board for the 6MHz Buck-boost DC/DC converter IC,
MB39C326. This evaluation board output preset 3.3V or can be selected the other values by DAC signal input. The
board consists of simple two layers. Two different function of boards lineup : MB39C326-EVBSK-01 for power save
mode and MB39C326-EVBSK-02 for fixed PWM.
Figure 1-1 Board Outline
2. Evaluation Board Specification
Table 2-1 Evaluation Board Specification
Item
Symbol
Condition
Min
Typ
Max
Unit
Input voltage
VIN
-
2.5
3.7
5.5
V
Output voltage
VOUT
R1 = 620 kΩ, R2 = 110 kΩ
3.185
3.318
3.451
V
Output current
IOUT(MAX1)
VIN = 3.3V to 5.5V, EVBSK-02
-
-
1200
mA
IOUT(MAX2)
VIN = 2.5V to 3.3V, EVBSK-02
-
-
800
mA
IOUT(MAX3)
VIN = 3.3V to 5.5V, EVBSK-01, ILIMSEL = H
-
-
600
mA
IOUT(MAX4)
VIN = 2.5V to 3.3V, EVBSK-01, ILIMSEL = H
-
-
500
mA
Switching
frequency
FREQUENCY
-
5.2
5.8
6.4
MHz
Maximum
efficiency
EFFICIENCY
-
-
93
-
%
Signal input
threshold voltage
VIL
EN, ILIMSEL
0.0
-
0.25
V
VIH
1.5
-
VIN
V
Board size: 12.7 mm × 7.62 mm, Component height 1mm max

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3. Block Diagram
Figure 3-1 Block Diagram for EVBSK-01

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Figure 3-2 Block Diagram for EVBSK-02
VIN
EN
C1
C2
VDD
SWOUT
SW1
SW2 SW3
SW4
SW5 VOUT VOUT
GND2
C3
DAC
R1
R2
R3
DGND
AGND
FB
VSELSW
SWIN
L1
VCC
EN
ILIMSEL
XPS
Over Temp
Protection Oscillator
VSEL
Device
Control
Current
Sensor
BGR
UVLO
Gate Controller
< EVBSK-02 >
Err
Amp
GND1

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4. PIN Descriptions
4.1 Input/Output Pin Descriptions
Table 4-1 Input/Output Pin Descriptions
Terminal
I/O
Description
VIN
I
Power supply terminal
VOUT
O
Output terminal
EN
I
IC enable terminal
EN = H : Enable
EN = L : Shutdown
DAC
I
Output voltage setting terminal (DAC signal input)(*1)
ILIMSEL
I
Inductor peak current select terminal (EVBSK-01)(*2)
ILIMSEL = H : Inductor peak current value(IPK)= 1.3A
ILIMSEL = L : Inductor peak current value(IPK)= 0.49A
GND1
-
Input GND terminal
GND2
-
Output GND terminal
*1: Please refer the MB39C326 datasheet for setting output voltage by DAC.
*2: EVBSK-01: MB39C326 XPS pin is set to L, ILIMSEL pin is set to H and output current limit value(IPK) =
1.3A at ILIMSEL = H and 0.49A at ILIMSEL = L.
EVBSK-02: MB39C326 XPS pin is set to H, ILIMSEL pin is set to L and inductor peak current value(IPK) =
3.2A.
4.2 Jumper Descriptions
Table 4-2 Jumper Descriptions
Jumper
Description
Initial
JP2
H: MB39C326 ILIMSEL pin is short to VIN.
(L) : MB39C326 ILIMSEL pin is shorted to GND.
Short to
VIN
4.3 Setup and Verification
1. Connect the power supply between VIN and GND1. EN is connected to VIN.
2. 3.3V is output to VOUT terminal after power is supplied.
Low impedance power supply is recommended to use. The power supply line can be stable at evaluation when some
capacitor is connected to the line.
Figure 4-1 Image of Connection
EN
VIN
GND1
DAC
VOUT
GND2
Power
supply
Multimeter
load etc.

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5. Component and Wiring Layout
5.1 Component Layout
Figure 5-1 Component Layout (Layer 1)
<EVBSK-01>
<EVBSK-02>

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Figure 5-2 Component Layout (Layer 2, Top View)
<EVBSK-01>
<EVBSK-02>

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5.2 Wiring Layout
Figure 5-3 Wiring Layout (Layer 1)
<EVBSK-01>
<EVBSK-02>
Figure 5-4 Wiring Layout (Layer 2, Top View)
<EVBSK-01/02>

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6. Schematic Circuit
Figure 6-1 Schematic Circuit for Power Save Mode
VIN
M1
C1
C2
D4
E3
E4
D3
C3
B4
C4
A4
A3
B3
D1
D2
E1
E2
A2
A1
B2
B1 SWOUT1
SWOUT2
VDD1
VDD2 VOUT2
VOUT1
SWIN2
SWIN1
XPS
VCC
EN
VSEL
ILIMSEL
GND1_1
GND1_2
GND2
FB
VSELSW
DGND2
DGND1
MB39C326
JP2
VIN
VIN
EN
GND1
VIN
C1
10μF
C3
22μF
0.1μF
L1 0.47μH
R2
110kΩ
R1
620kΩ R3
330kΩ
DAC
VOUT
GND2
C2

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Figure 6-2 Schematic Circuit for Fixed PWM Mode
DAC
VOUT
GND2
VIN
M1
C1
C2
D4
E3
E4
D3
C3
B4
C4
A4
A3
B3
D1
D2
E1
E2
A2
A1
B2
B1 SWOUT1
SWOUT2
VDD1
VDD2 VOUT2
VOUT1
SWIN2
SWIN1
XPS
VCC
EN
VSEL
ILIMSEL
GND1_1
GND1_2
GND2
VSELSW
DGND2
DGND1
MB39C326
VIN
EN
GND1
VIN
C1
10μF
C3
2.2μF
C2
0.1μF
L1 0.47μH
R2
110kΩ
R1
620kΩ R3
330kΩ
FB

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7. Component List
Table 7-1 Component List
No.
Component
Item
Parts Number
Vendor
Value
Remarks
1
M1
PMIC
MB39C326
Cypress
-
2
L1
Inductor
GLCHKR4701A
ALPS
0.47 μH
35 mΩ, 3.7A
3
C1
Ceramic Capacitor
EMK107BBJ106MA-T
TAIYO YUDEN
10 μF
16V, X5R, 1608
4
C2
Ceramic Capacitor
UMK105BJ104KV-F
TAIYO YUDEN
0.1 μF
50V, X5R, 1005
5
C3
Ceramic Capacitor
EMK105ABJ225MV-F
TAIYO YUDEN
2.2 μF
16V, X5R, 1005, EVBSK-02
Ceramic Capacitor
JMK107BBJ226MA-T
TAIYO YUDEN
22 μF(*1)
6.3V, X5R, 1608, EVBSK-01
6
R1
Chip Resistor
RK73H1ETTP6203F
KOA
620 kΩ
±1.0%
7
R2
Chip Resistor
RK73H1ETTP1103F
KOA
110 kΩ
±1.0%
8
R3
Chip Resistor
RK73H1ETTP3303F
KOA
330 kΩ
±1.0%
9
JP2
Solder jumper
JPPAD
-
-
H (Short to VIN)
Cypress : Cypress Semiconductor Corp.
ALPS : Alps Green Devices Co., Ltd
TAIYO YUDEN : Taiyo Yuden Co., LTD
KOA : KOA Corporation
These components are compliant with RoHS. Please ask each vendor for details if necessary.
*1: EVBSK-01 operates by PFM mode at light load. Large output capacitor (around 22 μF) is recommended
to reduce the output ripple voltage.

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8. Evaluation Board Picture
Figure 8-1 Picture of MB39C326-EVBSK-01
<TOP> <BOTTOM>
Figure 8-2 Picture of MB39C326-EVBSK-02
<TOP> <BOTTOM>

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9. Ordering Information
Table 9-1 Ordering Information
Part Number
EVB Revision
Note
MB39C326-EVBSK-01
Rev 1.2
---
MB39C326-EVBSK-02
Rev 1.2
---

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10.Major Changes
Page
Section
Change Results
Revision 1.0
-
-
Initial release
Revision 2.0
14
7. Component List
Revised the Component of Component list
GLC series → GLCHKR4701A
15
8. Evaluation Board Picture
Inserted board pictures

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SS901-00022-2v0-E
Cypress Operation Manual
MB39C326-EVBSK-01/02
Evaluation Board of 6MHz Buck-boost DC/DC Converter IC
Operation Manual
June 2015 Rev. 2.0
Published: Cypress Semiconductor Corp.
Edited: Communications

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Colophon
The products described in this document are designed, developed and manufactured as contemplated for general use, including without
limitation, ordinary industrial use, general office use, personal use, and household use, but are not designed, developed and
manufactured as contemplated (1) for any use that includes fatal risks or dangers that, unless extremely high safety is secured, could
have a serious effect to the public, and could lead directly to death, personal injury, severe physical damage or other loss (i.e., nuclear
reaction control in nuclear facility, aircraft flight control, air traffic control, mass transport control, medical life support system, missile
launch control in weapon system), or (2) for any use where chance of failure is intolerable (i.e., submersible repeater and artificial
satellite). Please note that Cypress will not be liable to you and/or any third party for any claims or damages arising in connection with
above-mentioned uses of the products. Any semiconductor devices have an inherent chance of failure. You must protect against injury,
damage or loss from such failures by incorporating safety design measures into your facility and equipment such as redundancy, fire
protection, and prevention of over-current levels and other abnormal operating conditions. If any products described in this document
represent goods or technologies subject to certain restrictions on export under the Foreign Exchange and Foreign Trade Law of Japan,
the US Export Administration Regulations or the applicable laws of any other country, the prior authorization by the respective
government entity will be required for export of those products.
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The contents of this document are subject to change without notice. This document may contain information on a Cypress product under
development by Cypress. Cypress reserves the right to change or discontinue work on any product without notice. The information in
this document is provided as is without warranty or guarantee of any kind as to its accuracy, completeness, operability, fitness for
particular purpose, merchantability, non-infringement of third-party rights, or any other warranty, express, implied, or statutory. Cypress
assumes no liability for any damages of any kind arising out of the use of the information in this document.
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