Renesas RTKA211250DE0000BU Manual
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Renesas RTKA211250DE0000BU Manual

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RTKA211250DE0000BU
The RTKA211250DE0000BU board evaluates the
RAA211250
(QFN version), a DC/DC synchronous
step-down regulator with programmable switching
frequency.
The RAA211250 supports a wide input voltage range
(from 4.5V to 30V) and adjustable output voltage. It
delivers up to continuous 3A output current with
premium load regulation and line regulation
performance.
V
Up to 30V
C
IN
R16UZ0039EU0101 Rev.1.01
Oct 7, 2022
IN
VIN
R
IN1
EN
R
IN2
RAA211250
PGND
FS
R
FS
AGND
Figure 1. Simplified Circuit
Features
▪ Simple and flexible design
▪ 4.5V to 30V V
▪ Convenient power conversion
Specifications
The following are the design specifications for the
RTKA211250DE0000BU:
▪ Input voltage (V
▪ Output voltage (V
▪ Maximum output current: 5A
BST
C
BOOT
SW
L
R
FB1
FB
R
FB2
EBIAS
VCC
Evaluation Board Manual
range
IN
): 4.5V to 30V
IN
): 3.3V
OUT
V
OUT
3.3V
C
OUT
3×47µF
© 2022 Renesas Electronics
Page 1

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Summary of Contents for Renesas RTKA211250DE0000BU

  • Page 1 Evaluation Board Manual RTKA211250DE0000BU Features The RTKA211250DE0000BU board evaluates the RAA211250 (QFN version), a DC/DC synchronous ▪ Simple and flexible design step-down regulator with programmable switching ▪ 4.5V to 30V V range frequency. ▪ Convenient power conversion The RAA211250 supports a wide input voltage range (from 4.5V to 30V) and adjustable output voltage.

  • Page 2: Table Of Contents

    RTKA211250DE0000BU Evaluation Board Manual Contents Functional Description ..............3 Operational Characteristics .

  • Page 3: Functional Description

    The RAA211250 (QFN version) is an easy-to-use synchronous Buck switching regulator with integrated 70mΩ (high-side) and mΩ (low-side) MOSFETs. The RTKA211250DE0000BU board demonstrates the operations of RAA211250 (QFN version). The board allows you to evaluate the performance of the part with different application circuits, and it also provides you a reference for board layout.

  • Page 4: Board Design

    RTKA211250DE0000BU Evaluation Board Manual Board Design Figure 3. RTKA211250DE0000BU Evaluation Board (Top) Layout Guidelines For detailed layout guidelines reference the Layout Guidelines section in the RAA211250 Datasheet. R16UZ0039EU0101 Rev.1.01 Page 4 Oct 7, 2022...

  • Page 5: Schematic Diagram

    RTKA211250DE0000BU Evaluation Board Manual Schematic Diagram UNNAMED_1_SMCAP_I23_A UNNAMED_1_RAA211450_I49_9 Figure 4. RTKA211250DE0000BU Schematic R16UZ0039EU0101 Rev.1.01 Page 5 Oct 7, 2022...

  • Page 6: Bill Of Materials

    RTKA211250DE0000BU Evaluation Board Manual Bill of Materials Ref Des Description Manufacturer Part Number C8, C9, CAP, SMD, 1210, 47µF, 10V, 10%, X7R, ROHS Murata GRM32ER71A476KE15L CAP, SMD, 0603, 1.0µF, 16V, 10%, X7R, ROHS C1608X7R1C105K CAP, SMD, 0603, 0.1µF, 16V, 10%, X7R, ROHS...

  • Page 7: Board Layout

    RTKA211250DE0000BU Evaluation Board Manual Board Layout Figure 5. Top Layer Figure 6. Second Layer R16UZ0039EU0101 Rev.1.01 Page 7 Oct 7, 2022...
  • Page 8 RTKA211250DE0000BU Evaluation Board Manual Figure 7. Third Layer Figure 8. Bottom Layer R16UZ0039EU0101 Rev.1.01 Page 8 Oct 7, 2022...

  • Page 9: Typical Performance Graphs

    RTKA211250DE0000BU Evaluation Board Manual Typical Performance Graphs = 24V, V = 3.3V, T = +25°C, unless otherwise noted. 3.288 5Vin 3.287 12Vin 24Vin 3.286 3.285 5Vin 12Vin 3.284 24Vin 3.283 Output Current (A) Output Current (A) Figure 10. Load Regulation Figure 9.

  • Page 10: Ordering Information

    RTKA211250DE0000BU Evaluation Board Manual = 24V, V = 3.3V, T = +25°C, unless otherwise noted. (Cont.) 50mV/Div SW 5V/Div 1V/Div Load 1A/Div 2A/Div 1V/Div 1A/Div SW 20V/Div 200µs/Div 200µs/Div Figure 16. OCP by Short V Figure 15. Load Ramp from 50mA to 2.5A...
  • 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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