BD83070GWL-EVK-001 User Guide Datasheet by Rohm Semiconductor

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ROHI'II User’s Guide Palameter Symbol Limit MIN MAX Unit Condifions SupplyVoltage VM 2.0 55
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© 2019 ROHM Co., Ltd.
No. 62UG012E Rev.00
1
JUN.2019
Users Guide
Switching Regulator Series
Synchronous Buck-Boost DC/DC Converter
BD83070GWL Evaluation Board
BD83070GWL-EVK-001
Introduction
This application note will provide the steps necessary to operate and evaluate ROHM’s synchronous buck-boost DC/DC converter using
BD83070GWL evaluation board. Component selection and operating procedures are included.
Description
The BD83070GWL converter is a power supply solution designed for battery powered devices. It can operate at pulse frequency modulation
(PFM) to suppress loss and current consumption during light load which has 2.8μA quiescent current at no load. Capable to support up to 1A
output on pulse width modulation (PWM) and provides high efficiency for heavy load. It is possible to disable auto-PFM/PWM mode by via MODE
pin. User can select from 2 preset output voltage via VSEL pin and it changes between buck and boost operations depending on the relation
between input voltage and output voltage.
Application
Single Cell Li-ion or 3 Cell NiMH Battery-Powered Portable
Products
Tablet Terminal Device
Smartphone
Features
Automation PFM/PWM Mode and Fixed PWM Mode
Input Voltage Range: 2.0 V to 5.5 V
Output Current: Up To 1 A (VIN > 2.7 V, VOUT = 3.3 V)
Selectable Output Voltage: 2.5 V or 3.3 V
Efficiency: Up To 95 %
UVLO Detection: 1.61 V(Max)
Built-in Thermal, Over Voltage, And Over Current Protection
Key Specifications
Input Voltage Range: 2.0 V to 5.5 V
Output Voltage: 3.3 V or 2.5V
Output Current: 1 A
Switching Frequency: 1.5 MHz(Typ)
Quiescent VIN Current: 2.8 μA(Typ)
UCSP50L1C package (1.20 mm × 1.60 mm × 0.57 mm)
Evaluation Board Operating Limits
Parameter Symbol Limit Unit Conditions
MIN TYP MAX
Supply Voltage V
IN
2.0 - 5.5 V
Output Current I
OUT
1 - - A VIN>2.7V, VOUT=3.3V
BD8307OGWL-EVK-OO1 anumm w :v r EDmmGwL 2 E 9‘ WW 3 g w 4 a] W LN m mm m 2 st :2 stL EN M M W as; mm a mg n z E E c] u m; 45mm vuun vuum czu my mm mm 5mm mm mm mm
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User
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Evaluation Board
Material of PCB: FR-4
Number of Layer 4
PCB thickness: 1.4mm
Figure 1. BD83070GWL Evaluation Board
Board Schematic
Figure 2. BD83070GWL Evaluation Board Schematic
μ
μ
μ
6
0mm
μ
μ
μ
45mm
μ
User’s Guide VSEL Pin vowr HIGH (2 VIN-0.3 V) 3.3V EN Pin BoaaomGWL Condition HIGH (2 1.2 vp Enab‘e MODE Pin MODE HIGH (2 1.2 vp Forced PWM
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Output Voltage Settings
Below is a table of output voltages selectable using VSEL pin.
VSEL Pin VOUT
HIGH ( VIN-0.3 V) 3.3V
LOW ( 0.3 V) 2.5V
Table 1. Output Voltage Settings
Operation State Settings
Below is a table of BD83070GWL Condition selectable using EN pin.
EN Pin BD83070GWL Condition
HIGH ( 1.2 V) Enable
LOW ( 0.4 V) Shutdown
Table 2. EN Pin Settings
Operation Mode Settings
Below is a table of operation modes selectable using MODE pin.
MODE Pin MODE
HIGH ( 1.2 V) Forced PWM
LOW ( 0.4 V) Automatic PFM-PWM
Table 3. MODE Pin Settings
User’s Guide Doscription Reforms. Part Numbcr Manufacturer [Unit inch (mm)] my. c1 GRM21BR61c106ME15 MumIa mm, 16% st, 0005 (2012) 1 c2 GRM188R60J226MEAOD MumIa 220E, 6.3V st 0603 (1608) 1 c3 CGB2A1x5R1c474M033IaO TDK 0470):, 16V, st. 0402 (1005) 1 c10, 020. CA Open 3 L1 1239ASVH71R5M MumIa 1.50H, 1A, 1000 (2520) 1 RFRA, R1. R2 Shun 3 SW1 , SW2, SW3 680007103HLF FCI CONN HEADER VERT, .100 3POS, 15AU 3 EN 15022 KeysIone EIecIronics TEST POINT PC MULTI PURPOSE 1 GNDO‘ ESTES GNDZ‘ 150272 KeysIone Electronics TEST POINT PC MULTI PURPOSE 4 PVINO, PVIN1 150272 KeysIone EIecImnics TEST POINT PC MULTI PURPOSE 2 VOUT0. VOUT1 150272 KeysIone EIecImnics TEST POINT PC MULTI PURPOSE 2
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Evaluation Board BOM
Below is a table showing the Bill of Materials. Part numbers and suppliers are included.
Reference Part Number Manufacturer
Description
[Unit: inch (mm)] Qty.
C1 GRM21BR61C106ME15 Murata 10μF, 16V, X5R, 0805 (2012) 1
C2 GRM188R60J226MEA0D Murata 22μF, 6.3V, X5R, 0603 (1608) 1
C3 CGB2A1X5R1C474M033BC
TDK 0.47μF, 16V, X5R, 0402 (1005) 1
C10, C20, C4 Open 3
L1 1239AS-H-1R5M Murata 1.5μH, 1A, 1008 (2520) 1
RFRA, R1, R2 Short 3
SW1, SW2, SW3 68000-103HLF FCI CONN HEADER VERT, .100, 3POS, 15AU
3
EN 1502-2 Keystone Electronics
TEST POINT PC MULTI PURPOSE 1
GND0, GND1, GND2,
GND3
1502-2 Keystone Electronics
TEST POINT PC MULTI PURPOSE 4
PVIN0, PVIN1 1502-2 Keystone Electronics
TEST POINT PC MULTI PURPOSE 2
VOUT0, VOUT1 1502-2 Keystone Electronics
TEST POINT PC MULTI PURPOSE 2
U1 BD83070GWL ROHM 3.3V 2A Buck-Boost DC/DC 1
Table 4: Bill of Materials
Board Operating Procedure
1. Set the output voltage using the switch settings at SW3. (refer to Table 1)
2. Set the operation mode using the switch settings at SW2. (refer to Table 3)
3. Disable the IC by setting the SW1 jumper to the upper position (EN → GND).
4. Connect the power supply’s GND terminal to one of each of the GND0,GND1,GND2,GND3 test point on the evaluation
board.
5. Connect the power supply’s VCC terminal to the PVIN0 test point on the evaluation board. This will provide VIN to the IC.
Please note that VIN should be in the range of 2.0V to 5.5V.
6. Connect the electronic load to one of each of GND0-3 and VOUT0. Connect the voltmeter to one of each of GND0-3 and
VOUT1.
7. Turn on the power supply and enable the IC by setting the jumper at SW1 to the lower position (EN → VSYS). The output
voltage can be measured at test point VOUT. Now turn on the load. The load can be increased up to 1.0A.
User’s Guide
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Board Layout
The following are layers of the Evaluation Board of BD83070GWL
Figure 3. Top Layer
Figure 4. Middle 1 Layer
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Figure 5. Middle 2 Layer
Figure 6. Bottom Layer
User's Guide
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Reference Application Data
The following are graphs of efficiency, switching frequency, load response, output voltage, ripple, startup and shutdown.
Typical Performance Curves
Figure 7. Efficiency vs Output Current
(VSEL=High, MODE=Low: Auto-PFM/PWM)
Figure 8. Efficiency vs Output Current
(VSEL=High, MODE=High: Forced-PWM)
Figure 9. Efficiency vs Output Current
(VSEL=Low, MODE=Low: Auto-PFM/PWM)
Figure 10. Efficiency vs Output Current
(VSEL=Low, MODE=High: Forced-PWM)
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
Efficiency [%]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.8 V
VIN=3.6 V
VIN=3.0 V
VIN=2.4 V
VIN=1.8 V
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000
Efficiency [%]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.8 V
VIN=3.6 V
VIN=3.0 V
VIN=2.4 V
VIN=1.8 V
50
55
60
65
70
75
80
85
90
95
100
0.01 0.1 1 10 100 1000
Efficiency [%]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.8 V
VIN=3.6 V
VIN=3.0 V
VIN=2.4 V
VIN=1.8 V
0
10
20
30
40
50
60
70
80
90
100
0.01 0.1 1 10 100 1000
Efficiency [%]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.8 V
VIN=3.6 V
VIN=3.0 V
VIN=2.4 V
VIN=1.8 V
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Typical Performance Curves - continued
Figure 11. Output Voltage 2 vs Output Current
(“Load Regulation”, VSEL=Low, MODE=High: Forced-PWM)
Figure 12. Output Voltage 1 vs Output Current
(“Load Regulation”, VSEL=High, MODE=High: Forced-PWM)
Figure 13. Output Voltage 2 vs Output Current
(“Load Regulation”, VSEL=Low, MODE=Low: Auto-PFM/PWM)
Figure 14. Output Voltage 1 vs Output Current
(“Load Regulation”, VSEL=High, MODE=Low: Auto-PFM/PWM)
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
0 500 1000 1500 2000
Output Voltage 2:V
OUT2
[V]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.6 V
VIN=2.4 V
VIN=1.8 V
2.90
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
0 500 1000 1500 2000
Output Voltage 1:V
OUT1
[V]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.6 V
VIN=2.4 V
VIN=1.8 V
2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
2.50
2.55
2.60
0 500 1000 1500 2000
Output Voltage 2:V
OUT2
[V]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.6 V
VIN=2.4 V
VIN=1.8 V
2.90
2.95
3.00
3.05
3.10
3.15
3.20
3.25
3.30
3.35
3.40
0 500 1000 1500 2000
Output Voltage 1:V
OUT1
[V]
Output Current:I
OUT
[mA]
VIN=4.2 V
VIN=3.6 V
VIN=2.4 V
VIN=1.8 V
BD8307OGWL-EVK-001 cm |w1[200 mA/div] '— cm .VOUT [zoo mVIdiv, oifset=3.31\lj ”F"— ch3PVlN(1V/dlv, olfset=2 3V] ‘ ch4:|OUT [200 mA/div] OUT [200 mV/d' "set 1V] ch3:PVIN[1V/div, offs et=2 3 V] 1 " TIme[50us/div] TIme[50ps/div] mm. mm... ...... mm... ..._....... ...... M. w M 1w m. m... M... m... I chMum [300 mA/dw] ch1:VOUT[300 mV/dw. offsei: 31V] cm W [300 mA/dw] N 7 u; WF-f ch3:PVlN[1V/d|v, offsel=3.6 VJ ch1 VOUT[300m\/Idiv, ofiseFS 31V] cthPVI N [1 View, olfset=3.6 VJ A. 177‘ Time[50us/dw} T Time-[Sous/dw] mT/m \ x... um. um. 55.. m... . .y. man» u... ....« .w
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Typical Performance Curves - continued
Figure 15. Transient Response
(VIN=2.3 V, VSEL=High, MODE=Low: Auto-PFM/PWM,
Output current 20 mA->600 mA)
Figure 16. Transient Response
(VIN=2.3 V, VSEL=High, MODE=Low: Auto-PFM/PWM,
Output current 600 mA->20 mA)
Figure 17. Transient Response
(VIN=3.6 V, VSEL=High, MODE=Low: Auto-PFM/PWM,
Output current 50 mA->1000 mA)
Figure 18. Transient Response
(VIN=3.6 V, VSEL=High, MODE=Low: Auto-PFM/PWM,
Output current 1000 mA->50 mA)
BD8307OGWL-EVK-001 Teksion Hi—b—l l'ekstnn A 14an fl 4‘ 12an @: ioamv ‘ mi Zdflmv cn1:EN[3 V/divlr A_ 30st i ch12EN[3 V/div] A ”st *@ 3|]st i *m 472m; ‘1 . , K i r , 1 ch2:VOUT [1 V/le] ‘ -"! ch2:VOUT [1 Vidiv] 1 ch: ngh chz High 3 328v 3sz 1 cm Klse Ch! Rise 3|B.3|ls : min: B" V 3 c :ln ”+in [500 mNdiv] 31m“ Ch32lp§4N+IMN [500 nip/div] Th”? 3 i v 3 7 3 Tirne[1 mS/dIV] TIme[2rns/dlv] CM anav IMV ~Mi.unms A cm 1 2.52v chi 3.00V I». LWV wiwums um I LSZV cm snnmmw ch3 snumm aux illfliDV'i Teksmp H——| 0 . 3 fichhchzn» A * Chlachnh 3,277ms ,1 mm: ch1.EN [2 V/div] chi ngh ~ cm ngh s.iav snov chz High chz High 253v 3‘st chZ VOUT[1 V/div] chZ VOUT [1 WW] DI Timepms/diwg Tlme[2 ms/div] 1.an NMzJiiims A chi \ LWV 0M chi ziunv Ii- iuiiv nMiziDnms Ai chi \ Liinv Imam
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Typical Performance Curves - continued
Figure 19. Startup Waveform
(VIN=2.4 V, VSEL=High, MODE=High: Forced-PWM,
5.5 Ω resistive load)
Figure 20. Startup Waveform
(VIN=3.6 V, VSEL=High, MODE=High: Forced-PWM,
3.3 Ω resistive load)
Figure 21. Shutdown Waveform
(VIN=3.6 V, VSEL=Low, MODE=Low: Auto-PFM/PWM, No
load)
Figure 22. Shutdown Waveform
(VIN=3.6 V, VSEL=High, MODE=Low: Auto-PFM/PWM, No
load)
BD830 7OGWL-EVK-001 5' E. u 63 g § 2 n. .9 K 2.0 7 ——Ta=»50 'c ——Ta=+25 ‘c 6 ——Ta=+85 ‘c Quiescent VIN Curmmzlvm [HA] m w s a- 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Pwer Supply Voltagefvn [V] in Shutdown VIN Currenclaw [pA] z: _. in o 0.0 // A 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 Power Supply Voltagezvm [V]
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Typical Performance Curves - continued
Figure 23. Switching Frequency vs Power Supply Voltage
(MODE=High: Forced-PWM, No load)
Figure 24. Ripple Voltage vs Output Current
(VIN=3.6 V, VSEL=High)
Figure 25. Quiescent VIN Current vs Power Supply Voltage
(MODE=Low: Auto-PFM/PWM, FB=3.5V,No load)
Figure 26. Shutdown VIN current vs Power Supply Voltage
(EN=MODE=Low, No load)
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Switching Frequency:f
SW
[MHz]
Power Supply Voltage:V
IN
[V]
VSEL=Low
VSEL=High
0
20
40
60
80
100
120
140
160
180
200
0.01 0.1 1 10 100 1000
Ripple Voltage [mV]
Output Current:I
OUT
[mA]
MODE=L: Auto PFM/PWM
MODE=H: Forced PWM
0.0
0.5
1.0
1.5
2.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
Shutdown VIN Current:I
SHD
[μA]
Power Supply Voltage:V
IN
[V]
Ta=-50 ˚C
Ta=+25 ˚C
Ta=+85 ˚C
Da‘e Reviswon Changes
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BD83070GWL
Revision History
Date Revision Changes
10.Jun.2019 001 New Release
ROHm SEMICONDUCTOR
R1102
B
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More detail product informations and catalogs are available, please contact us.
Notes
The information contained herein is subject to change without notice.
Before you use our Products, please contact our sales representative
and verify the latest specifica-
tions :
Although ROHM is continuously working to improve product reliability and quality, semicon-
ductors can break down and malfunction due to various factors.
Therefore, in order to prevent personal injury or fire arising from failure, please take safety
measures such as complying with the derating characteristics, implementing redundant and
fire prevention designs, and utilizing backups and fail-safe procedures. ROHM shall have no
responsibility for any damages arising out of the use of our Poducts beyond the rating specified by
ROHM.
Examples of application circuits, circuit constants and any other information contained herein are
provided only to illustrate the standard usage and operations of the Products. The peripheral
conditions must be taken into account when designing circuits for mass production.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly,
any license to use or exercise intellectual property or other rights held by ROHM or any other
parties. ROHM shall have no responsibility whatsoever for any dispute arising out of the use of
such technical information.
The Products specified in this document are not designed to be radiation tolerant.
For use of our Products in applications requiring a high degree of reliability (as exemplified
below), please contact and consult with a ROHM representative : transportation equipment (i.e.
cars, ships, trains), primary communication equipment, traffic lights, fire/crime prevention, safety
equipment, medical systems, servers, solar cells, and power transmission systems.
Do not use our Products in applications requiring extremely high reliability, such as aerospace
equipment, nuclear power control systems, and submarine repeaters.
ROHM shall have no responsibility for any damages or injury arising from non-compliance with
the recommended usage conditions and specifications contained herein.
ROHM has used reasonable care to ensure the accuracy of the information contained in this
document. However, ROHM does not warrants that such information is error-free, and ROHM
shall have no responsibility for any damages arising from any inaccuracy or misprint of such
information.
Please use the Products in accordance with any applicable environmental laws and regulations,
such as the RoHS Directive. For more details, including RoHS compatibility, please contact a
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non-compliance with any applicable laws or regulations.
When providing our Products and technologies contained in this document to other countries,
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regulations, including without limitation the US Export Administration Regulations and the Foreign
Exchange and Foreign Trade Act.
This document, in part or in whole, may not be reprinted or reproduced without prior consent of
ROHM.
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