1
AN33013UA
Evaluation Board Manual
Panasonic Corporation
Automotive & Industrial Systems Company
Semiconductor Business Division
2
GND
VCC
SW1
Enable control switch
Upper side (high): DCDC ON
Lower side (low): DCDC OFF
SW2
TL_CTRL control switch
JP2
If you connect this jumper switch,
the FLAG pin will be connected
to VREG(4.9V) via a 200kΩ-
register.
RT resistor.
SMA_SYNC
(BNC terminal for external
clock)
DCDC output pin
(sense pin / force pin)
Output voltage setting:
5.0V
SYNC input terminal
(external clock input)
To set the switching frequency to
205KHz , connect the jumper switches
like below. (RT1=330KΩ)
To set the switching frequency to
490KHz, connect the jumper switches
like below. (RT2=130KΩ)
(Default settings)
To set the switching frequency to
2067KHz , connect the jumper switches
like below. (RT1=22KΩ)
AN33013UA Evaluation board (front side)
3
The RC constant for phase
compensation is set for output
voltage 5.0V.
AN33013UA Evaluation board (back side)
This is a two layer circuit board. The back side is shown below. (The front side is shown on the previous page.)
4
OSC
13
SS
ERAMP
OCP
CSS
RT1
L1
CNT
Ext.CLK
EN
16
12
FB 11
COMP 10
SGND
5 RS
6 VCC_S
VREG
9
TL_CTRL 18
FLAG 19
SYNC 17
RT 14
SST
PWM PRIDRV
PVCC
VCC
7
22 BT
1 LX1
CBT 5.0 V
COUT1
RFLAG
CVCC1~3
TL 20
Vcc
15
CT
CTL
Pull-up
3 PVCC1
BTVCC
21
PLL
RRS
CVREG
4 PVCC2
N.C. 2
N.C. 8
24 LX2
OVP
SCP
VREG
VREF
(BGR)
TSD
UVLO
VINT OVP
(VCC)
23
PGND
Timer
Latch
CCT
RC1_5+RC1_6
RC1_3+RC1_4
Constant for phase compensation + Constant for setting output voltage
RC1_2
CC1_3 CC1_2
RC1_1 CC1_1
D1
The block diagram of the board is shown below.
AN33013UA Evaluation board (schematic)
RT3 RT2
NMOS
JP1
123
5
JIS3216_[EIA1206]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
3.8(L) x 2.4(W)
8.3(L) x 8.3(W)
JIS3225_[EIA1210]
JIS5750[EIA2220]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
JIS1608_[EIA0603]
Size
Compensation CapacitorMurata24pF GCM1882C1H240JA01JCC1_2
Compensation & Feedback ResistorPanasonicR=0 ERJ3GEY0R00VRC1_3
Compensation & Feedback ResistorPanasonicR=7.5K ERA3AEB752VRC1_6
VREG CapacitorMurata1µF GCM188R71C105KA49JCVREG
OCP Sense ResistorPanasonicR=30m ERJ8BWFR030VRRS
OSC Setting ResistorPanasonicR=130K ERA3AEB134VRT1
Pull-up ResistorPanasonicR=200K ERA3AEB204VRFLAG
Compensation & Feedback ResistorPanasonicR=0 ERJ3GEY0R00VRC1_5
Compensation & Feedback ResistorPanasonicR=30K ERA3AEB303VRC1_4
Compensation & Feedback ResistorPanasonicR=1.5K ERA3AEB152VRC1_2
Compensation & Feedback ResistorPanasonicR=7.5K ERA3AEB752VRC1_1
Schottky DiodePanasonic—DB24416D1
1ch DC-DC ConverterPanasonic—AN33013UALSI1
InductorSUMIDA10µH CDRH8D43-100NCL1
Output Capacitor
TAIYO
YUDEN
22µF TMK325C7226MM-TCOUT1
Input CapacitorTDK22µF CKG57NX7R1H226MT
CVCC1,CVCC2,
CVCC3
Compensation CapacitorMurata470pF GCM1882C1H471JA01JCC1_3
Compensation CapacitorMurata2.2nF GCM1882C1H222JA01JCC1_1
Setting CapacitorMurata0.1µF GCM188R11C104KA01JCBT,CCT,CSS,CTL
DescriptionMakerValuePart NameBoard Component Name
AN33013UA Evaluation board (components)
The BOM of this board is shown below.
Note: The specifications of the BOM are reference values. Other components might be mounted depending on target values of output voltage, frequency, etc.
Table 1 : compo nent on the evaluation board (reference)
Request for your special attention and precautions in using the technical information and
semiconductors described in this book
(1) If any of the products or technical information described in this book is to be exported or provided to non-residents, the laws and
regulations of the exporting country, especially, those with regard to security export control, must be observed.
(2) The technical information described in this book is intended only to show the main characteristics and application circuit examples
of the products. No license is granted in and to any intellectual property right or other right owned by Panasonic Corporation or any
other company. Therefore, no responsibility is assumed by our company as to the infringement upon any such right owned by any
other company which may arise as a result of the use of technical information described in this book.
(3) The products described in this book are intended to be used for general applications (such as office equipment, communications
equipment, measuring instruments and household appliances), or for specific applications as expressly stated in this book.
Consult our sales staff in advance for information on the following applications:
– Special applications (such as for airplanes, aerospace, automotive equipment, traffic signaling equipment, combustion equipment,
life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of
the products may directly jeopardize life or harm the human body.
It is to be understood that our company shall not be held responsible for any damage incurred as a result of or in connection with
your using the products described in this book for any special application, unless our company agrees to your using the products in
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(4) The products and product specifications described in this book are subject to change without notice for modification and/or im-
provement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product
Standards in advance to make sure that the latest specifications satisfy your requirements.
(5) When designing your equipment, comply with the range of absolute maximum rating and the guaranteed operating conditions
(operating power supply voltage and operating environment etc.). Especially, please be careful not to exceed the range of absolute
maximum rating on the transient state, such as power-on, power-off and mode-switching. Otherwise, we will not be liable for any
defect which may arise later in your equipment.
Even when the products are used within the guaranteed values, take into the consideration of incidence of break down and failure
mode, possible to occur to semiconductor products. Measures on the systems such as redundant design, arresting the spread of fire
or preventing glitch are recommended in order to prevent physical injury, fire, social damages, for example, by using the products.
(6) Comply with the instructions for use in order to prevent breakdown and characteristics change due to external factors (ESD, EOS,
thermal stress and mechanical stress) at the time of handling, mounting or at customer's process. When using products for which
damp-proof packing is required, satisfy the conditions, such as shelf life and the elapsed time since first opening the packages.
(7) This book may be not reprinted or reproduced whether wholly or partially, without the prior written permission of our company.
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