User Manual for STMicroelectronics models including: UM3441, UM3441 36 V - 1 A Synchronous Buck Converter, 36 V - 1 A Synchronous Buck Converter, Synchronous Buck Converter, Buck Converter, Converter
Evaluation board based on DCP3601 36 V - 1 A synchronous buck converter in SOT23-6L - User manual
19 dic 2024 — The STEVAL-3601CV1 evaluation board demonstrates a smart converter design able to deliver up to 1 A output current from a. 3.3 V to 36 V input, with a 5.0 V ...
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DocumentDocumentUM3441
User manual
Evaluation board based on DCP3601 36 V - 1 A synchronous buck converter in SOT23-6L
Introduction
The STEVAL-3601CV1 evaluation board demonstrates a smart converter design able to deliver up to 1 A output current from a 3.3 V to 36 V input, with a 5.0 V output voltage. The board features the DCP3601 miniaturized synchronous step-down converter, which implements enhanced peak current control and advanced design circuitry to minimize quiescent current, including also soft-start circuit, overcurrent protection circuit, overtemperature protection and output overvoltage protection. The board highlights key application benefits made possible by the DCP3601, including high efficiency and small PCB size, and is ideal for power conversion solutions in major appliances, smart metering, industrial 12/24 V bus conversion, and generalpurpose wide Vin power supplies. The device used on this board is supplied in the SOT23-6L package.
Figure 1. STEVAL-3601CV1 top view
Notice:
For dedicated assistance, submit a request through our online support portal at www.st.com/support.
UM3441 - Rev 2 - December 2024 For further information contact your local STMicroelectronics sales office.
www.st.com
UM3441
Electrical performance specification
1
Electrical performance specification
Table 1 provides a summary of the electrical performance of the STEVAL-3601CV1.
Symbol VIN
VOUT IOUT
Table 1. Electrical performance specification (Ta = 25°C)
Parameter Input supply voltage
Output voltage Output current
Min. -
Typ. 12 or 24
5 -
Max.
Unit
36
V
-
V
1
A
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Input/Output connector descriptions
2
Input/Output connector descriptions
This section provides the descriptions of the input/output connectors present on the STEVAL-3601CV1.
·
J1: Input power supply (Vin_EMC). Input voltage is filtered to decrease the EMI. Supply voltage should be
set with a current limitation compatible with the power board request.
·
J2: Main input power supply (Vin). Input voltage is not filtered to decrease the EMI. Supply voltage should
be set with a current limitation compatible with the power board request.
·
J3: Ground (Gnd)
·
J4: Ground (Gnd)
·
J5: Output voltage Connector (VOUT)
·
P1: Input voltage sense Connector
VIN_S: Input voltage sense
VIN_S: Input voltage sense
GND_S: Ground sense
GND_S: Ground sense
·
P3: Output voltage sense Connector
VOUT_S: Output voltage sense
VOUT_S: Output voltage sense
GND_S: Ground sense
GND_S: Ground sense
·
P3: ENABLE pin.
Place the jumper across EN and VIN to enable the buck converter
Place the jumper across EN and GND to disable the buck converter
Figure 2. Connector descriptions
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Input EMI filter
3
Input EMI filter
The STEVAL-3601CV1 is compliant with CISPR16-4-2. An input filter helps to reduce EMI. The filter consists of a ferrite bead (L2), an inductor (L3), and three ceramic capacitors (C3, C4 and C5). An electrolytic capacitor is used for bulk energy storage and input damping.
Figure 3. Input EMI filter
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How to use the board
4
How to use the board
The STEVAL-3601CV1 is set to deliver a 5 V output voltage. This board is best suited for applications where high efficiency at low current is preferred to output ripple.
Step 1. Connect the voltage supply between VIN and GND connectors or VIN_EMC and GND connectors.
Step 2. Connect the load (power resistor or active load) between VOUT and GND connectors.
Note:
For Step 1 and Step 2 short wires are recommended.
Step 3. Set the supply voltage VIN to 12 or 24 V.
Step 4. Note:
By default, VOUT is set to 5 V. Increase or decrease the output power resistor or active load to reach the suitable output current (max. 1 A).
Using DCP3601CMR, at light load the board works in PSK mode to guarantee high efficiency performance.
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Board Layout
5
Board Layout
This section shows the STEVAL-3601CV1 layout. All the dimensions are in millimetres (mm). Figure 4. STEVAL-3601CV1 top layer
Figure 5. STEVAL-3601CV1 L1 layer
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Figure 6. STEVAL-3601CV1 L2 layer
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Board Layout
Figure 7. STEVAL-3601CV1 bottom layer
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6
Schematic diagrams
Vin_EMC
L2
C3
GND
CE_TOP
ESD_Overlay_Small
BIN_TOP
Logo 2014_TOP
ORDER CODE
FOR EVALUATION ONLY
CH_ROHS_TOP Pb-Free_Small_Bottom
EU_ROHS_TOP IEC_HighVoltage_Small_Top C_HotSurface_Small_Top
Figure 8. STEVAL-360CV1 circuit schematic
L3 C4
2
1
C5
C1
U1
Vin
5
DCP3601CMR
Vin
SW
6
C6 C7
EN 4 EN
BOOT 1
FB 3
C2 R1
2 GND
GND
GND GND
GND GND
GND
L1 C10
Vout
R2
C8
C9
R3 R4 GND
GND
GND
1 2 3 4
1 2 3 4
4
3
2
1
1 2 3 4
1 2 3 4
P1
4
Vin
3
2
1
J1
J2
J3
J4
J5
Vin_EMC
Vin
Vout
GND
GND
Header, 4-Pin GND
P3
4
Vout
3
2
1
P2
3 2
Vin EN
1
GND
Vin R5
EN R6
Header, 4-Pin GND
GND
UM3441
Schematic diagrams
UM3441
Bill of materials
7
Bill of materials
Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
18
19
Q.ty 1 1 1 1 2 1 3 1 2 1 1 1 1 1 1 1 5
2
1
Table 2. STEVAL-3601CV1 bill of materials
Ref. R1 R2 R3 R4 R5, R6 C1 C2, C7, C9 C3 C4, C5 C6
C8 C10 L1 L2 L3 U1 J1, J2, J3, J4, J5
P1, P3
P2
Part/value 0 20 73.2 k 15 k NOT ASSEMBLY 10 uF 0.1 uF 100 nF 2.2 uF 2.2 uF
22 uF NOT ASSEMBLY 15 uH
1uH DCP3601CMR
-
-
-
Description Manufacturer
Order code
Thick film resistor
RS
732-5646
Thick film resistor
RS
678-9973
Thick film resistor
RS
708-8981
Thick film resistor
RS
228-4708
Thick film resistor
10uF/63V/20% WURTH Hybrid Polymer Electronics Inc
875 575 844 001
0.1uF / 50V / 0603 / X7R / 10%
TDK
C1608X7R1H104K080AA
100nF / 50V / 10%
WURTH Electronics Inc
885 012 208 087
2.2uF / 50V / 1812/ 10%
WURTH Electronics Inc
885 012 210 032
2.2uF / 50V / 0805 / X7R / 10%
TDK
C2012X7R1H225K125AC
22uF / 25V / 0805 / X5R / 20%
TDK
C2012X5R1E226M125A
Synchronous step-down converter
PC SCREW TERMINAL, 22-14AWG
Male SIL Vertical Throughboard Conn pitch 2.54mm
Male SIL Vertical Throughboard Conn pitch 2.54mm
WURTH Electronics Inc
WURTH Electronics Inc
WURTH Electronics Inc
744 393 305 150 742 792 651 744 383 130 10
ST
DCP3601CMR
KEYSTONE
KEYSTONE 7693
Wurth Electronics Inc
61300411121
Wurth Electronics Inc
61300311121
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Bill of materials
Item
Q.ty
Ref.
20
1
JP1
Part/value -
Description Manufacturer
Order code
Female Straight
Black Closed
Top 2 Way 1
RS
Row 2.54mm
Pitch
251-8503
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Board versions
8
Board versions
Table 3. STEVAL-3601CV1 versions
Finished good
Schematic diagrams
STEVAL$3601CV1A(1)
STEVAL$3601CV1A schematic diagrams
1. This code identifies the STEVAL-3601CV1 evaluation board first version.
Bill of materials STEVAL$3601CV1A bill of materials
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Regulatory compliance information
9
Regulatory compliance information
Notice for US Federal Communication Commission (FCC)
For evaluation only; not FCC approved for resale FCC NOTICE - This kit is designed to allow: (1) Product developers to evaluate electronic components, circuitry, or software associated with the kit to determine whether to incorporate such items in a finished product and (2) Software developers to write software applications for use with the end product. This kit is not a finished product and when assembled may not be resold or otherwise marketed unless all required FCC equipment authorizations are first obtained. Operation is subject to the condition that this product not cause harmful interference to licensed radio stations and that this product accept harmful interference. Unless the assembled kit is designed to operate under part 15, part 18 or part 95 of this chapter, the operator of the kit must operate under the authority of an FCC license holder or must secure an experimental authorization under part 5 of this chapter 3.1.2.
Notice for Innovation, Science and Economic Development Canada (ISED)
For evaluation purposes only. This kit generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of computing devices pursuant to Industry Canada (IC) rules. À des fins d'évaluation uniquement. Ce kit génère, utilise et peut émettre de l'énergie radiofréquence et n'a pas été testé pour sa conformité aux limites des appareils informatiques conformément aux règles d'Industrie Canada (IC).
Notice for the European Union
This device is in conformity with the essential requirements of the Directive 2014/30/EU (EMC) and of the Directive 2015/863/EU (RoHS).
Notice for the United Kingdom
This device is in compliance with the UK Electromagnetic Compatibility Regulations 2016 (UK S.I. 2016 No. 1091) and with the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012 (UK S.I. 2012 No. 3032).
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Revision history
Date 06-Nov-2024 19-Dec-2024
Table 4. Document revision history
Revision 1 2
Changes Initial release. Updated title in cover page and Section Introduction.
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Contents
Contents
1 Electrical performance specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Input/Output connector descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Input EMI filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 4 How to use the board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 5 Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 6 Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 7 Bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 8 Board versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 9 Regulatory compliance information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
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List of tables
List of tables
Table 1. Table 2. Table 3. Table 4.
Electrical performance specification (Ta = 25°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 STEVAL-3601CV1 bill of materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 STEVAL-3601CV1 versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
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List of figures
List of figures
Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8.
STEVAL-3601CV1 top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Connector descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Input EMI filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 STEVAL-3601CV1 top layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STEVAL-3601CV1 L1 layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 STEVAL-3601CV1 L2 layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STEVAL-3601CV1 bottom layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 STEVAL-360CV1 circuit schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
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IMPORTANT NOTICE READ CAREFULLY STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST's terms and conditions of sale in place at the time of order acknowledgment. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of purchasers' products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. For additional information about ST trademarks, refer to www.st.com/trademarks. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2024 STMicroelectronics All rights reserved
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