Renesas RTKA211820DE0000BU Manual
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Renesas RTKA211820DE0000BU Manual

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RTKA211820DE0000BU
The RTKA211820DE0000BU board demonstrates
and quickly evaluates the
a DC/DC synchronous step-down regulator with
programmable switching frequency.
The RAA211820 supports a wide input voltage range
(from 4.5V to 75V) and adjustable output voltage. It
delivers up to a continuous 2A output current with
premium load regulation and line regulation
performance.
V
IN
Up to 75V
R16UZ0045EU0100 Rev.1.00
Jul 1, 2022
RAA211820
(QFN version),
C
IN2
VIN
C
R
IN1
IN1
EN
R
IN2
RAA211820
PGND
VCC
FS
VCC
SS
PG
AGND
Figure 1. Block Diagram
Evaluation Board Manual
Features
▪ Simple and flexible design
▪ 4.5V to 75V V
▪ Convenient power conversion
Specifications
The following are the design specifications for the
RTKA211820DE0000BU:
▪ Input voltage (V
▪ Output voltage (V
▪ Maximum output current: 2A
BST
C
BOOT
SW
L
R
FB1
FB
R
FB2
EBIAS
VCC
C
VCC
range
IN
): 4.5V to 75V
IN
): 3.3V
OUT
V
OUT
C
C
OUT1
OUT2
22µF
22µF
© 2022 Renesas Electronics
Page 1

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Summary of Contents for Renesas RTKA211820DE0000BU

  • Page 1 Evaluation Board Manual RTKA211820DE0000BU Features The RTKA211820DE0000BU board demonstrates and quickly evaluates the RAA211820 (QFN version), ▪ Simple and flexible design a DC/DC synchronous step-down regulator with ▪ 4.5V to 75V V range programmable switching frequency. ▪ Convenient power conversion The RAA211820 supports a wide input voltage range (from 4.5V to 75V) and adjustable output voltage.

  • Page 2: Table Of Contents

    RTKA211820DE0000BU Evaluation Board Manual Contents Functional Description ..............3 Operational Characteristics .

  • Page 3: Functional Description

    The RAA211820 (QFN version) is an easy-to-use synchronous Buck switching regulator with an integrated 215mΩ/115mΩ high-side/low-side MOSFETs. The RTKA211820DE0000BU board demonstrates the operations of RAA211820 (QFN version). The board allows you to evaluate the performance of the part with different application circuits, and it provides you with a reference for a board layout.

  • Page 4: Board Design

    RTKA211820DE0000BU Evaluation Board Manual Board Design Figure 3. RTKA211820DE0000BU Evaluation Board (Top) Figure 4. RTKA211820DE0000BU Evaluation Board (Bottom) Layout Guidelines For detailed layout guidelines, reference the Layout Guidelines section in the RAA211820 Datasheet. R16UZ0045EU0100 Rev.1.00 Page 4 Jul 1, 2022...

  • Page 5: Schematic Diagram

    Schematic Diagram UNNAMED_1_SMRES_I10_B UNNAMED_1_RAA211820_I49_8 UNNAMED_1_CONN2_I41_IN1 UNNAMED_1_RAA211820_I49_4 VOUT 0.1UF UNNAMED_1_SMRES_I24_B 10UH RAA2118204GNP UNNAMED_1_RAA211820_I49_5 EBIAS VOUT PGND Figure 5. RTKA211820DE0000BU Schematic...

  • Page 6: Bill Of Materials

    RTKA211820DE0000BU Evaluation Board Manual Bill of Materials Manufacturer Reference Description Manufacturer Designator Part Number C9, C10 CAP, SMD, 1210, 22µF, 16V, 10%, X7R, RoHS Murata GRM32ER71C226KE18L CAP, SMD, 0603, 1.0µF, 16V, 10%, X7R, RoHS C1608X7R1C105K CAP, SMD, 0603, 0.1µF, 16V, 10%, X7R, RoHS...

  • Page 7: Board Layout

    RTKA211820DE0000BU Evaluation Board Manual Board Layout Figure 6. Top Layer Figure 7. Second Layer R16UZ0045EU0100 Rev.1.00 Page 7 Jul 1, 2022...
  • Page 8 RTKA211820DE0000BU Evaluation Board Manual Figure 8. Third Layer Figure 9. Bottom Layer R16UZ0045EU0100 Rev.1.00 Page 8 Jul 1, 2022...

  • Page 9: Typical Performance Graphs

    RTKA211820DE0000BU Evaluation Board Manual Typical Performance Graphs VIN = 4.5V VIN = 4.5V -0.1 VIN = 7V VIN = 7V -0.2 VIN = 12V VIN = 12V VIN = 24V VIN = 24V -0.3 VIN = 48V VIN = 48V -0.4...

  • Page 10: Ordering Information

    RTKA211820DE0000BU Evaluation Board Manual SW 20V/Div 2V/Div 0.1V/Div SW 35V/Div 2A/Div 2A/Div PG 5V/Div Load 2A/Div 40µs/Div 800µs/Div Figure 16. Overcurrent Protection Figure 17. Load Transient 1A to 2A to 1A Ordering Information Part Number Description RTKA211820DE0000BU RAA211820 (QFN version) evaluation board...
  • Page 11 Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products.

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