Renesas RTKA211835DE0010BU Manual
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Renesas RTKA211835DE0010BU Manual

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RTKA211835DE0010BU
The RTKA211835DE0010BU board demonstrates
and quickly evaluates the
version), a DC/DC asynchronous step-down regulator
with programmable switching frequency.
The RAA211835 supports a wide input voltage range
(from 4.5V to 75V) and adjustable output voltage. It
can deliver up to continuous 3A output current with
premium load regulation and line regulation
performance.
Features
▪ Simple and flexible design
▪ 4.5V to 75V V
range
IN
▪ Convenient power conversion
V
IN
Up to 75V
R16UZ0059EU0100 Rev.1.00
Nov 4, 2022
RAA211835
(HTSSOP
C
IN2
VIN
C
R
IN1
IN1
EN
R
IN2
RAA211835
PGND
VCC
FS
VCC
SS
PG
AGND
Figure 1. RAA211835 Typical Application
Evaluation Board Manual
Specifications
The design specifications of the
RTKA211835DE0010BU are shown below:
▪ Input voltage (V
▪ Output voltage (V
▪ Maximum output current: 3A
BST
C
BOOT
SW
L
R
FB1
FB
R
FB2
EBIAS
VCC
C
VCC
): 4.5V to 75V
IN
): 3.3V
OUT
V
3.3V
OUT
C
OUT
3×22µF
© 2022 Renesas Electronics
Page 1

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Summary of Contents for Renesas RTKA211835DE0010BU

  • Page 1 Evaluation Board Manual RTKA211835DE0010BU Specifications The RTKA211835DE0010BU board demonstrates and quickly evaluates the RAA211835 (HTSSOP The design specifications of the version), a DC/DC asynchronous step-down regulator RTKA211835DE0010BU are shown below: with programmable switching frequency. ▪ Input voltage (V ): 4.5V to 75V The RAA211835 supports a wide input voltage range ▪...

  • Page 2: Table Of Contents

    RTKA211835DE0010BU Evaluation Board Manual Contents Functional Description ..............3 Operational Characteristics .

  • Page 3: Functional Description

    The RAA211835 (HTSSOP version) is an easy-to-use asynchronous Buck switching regulator with an integrated 200mΩ high-side MOSFETs. The RTKA211835DE0010BU board demonstrates the operations of RAA211835 (HTSSOP version). It allows the user to evaluate the performance of the device with different application circuits and provides the user a reference for a board layout.

  • Page 4: Board Design

    RTKA211835DE0010BU Evaluation Board Manual Board Design Figure 3. RTKA211835DE0010BU Evaluation Board (Top) Layout Guidelines For detailed layout guidelines reference the Layout Guidelines section in the RAA211835 Datasheet. R16UZ0059EU0100 Rev.1.00 Page 4 Nov 4, 2022...

  • Page 5: Schematic Diagrams

    Schematic Diagrams TP12 TP13 UNNAMED_3_CONN2_I41_IN1 VOUT UNNAMED_3_SMRES_I24_B PGND 6.8UH PGND PGND UNNAMED_3_RAA211835_I47_13 UNNAMED_3_SMCAP_I22_A 0.1UF UNNAMED_3_RAA211835_I47_12 EBIAS VOUT UNNAMED_3_RAA211835_I47_11 UNNAMED_3_RAA211835_I47_7 AGND EPAD RAA211835GSP UNNAMED_3_SMRES_I10_B 100K Figure 4. RTKA211835DE0010BU Schematic...

  • Page 6: Bill Of Materials

    RTKA211835DE0010BU Evaluation Board Manual Bill of Materials Reference Description Manufacturer Manufacturer Part Number Designator C8, 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

    RTKA211835DE0010BU Evaluation Board Manual Board Layout Figure 5. Silkscreen Top Layer Figure 6. Top Layer R16UZ0059EU0100 Rev.1.00 Page 7 Nov 4, 2022...
  • Page 8 RTKA211835DE0010BU Evaluation Board Manual Figure 7. Second Layer Figure 8. Third Layer R16UZ0059EU0100 Rev.1.00 Page 8 Nov 4, 2022...

  • Page 9: Typical Performance Graphs

    RTKA211835DE0010BU Evaluation Board Manual Figure 9. Bottom Layer Typical Performance Graphs 3.50 3.45 3.40 3.35 3.30 3.25 3.20 5Vin 9Vin 5Vin 9Vin 3.15 12Vin 24Vin 12Vin 24Vin 3.10 36Vin 48Vin 36Vin 48Vin 3.05 60Vin 72Vin 60Vin 72Vin 3.00 Load Current (A) Load Current (A) Figure 10.
  • Page 10 RTKA211835DE0010BU Evaluation Board Manual Figure 12. Steady State at 0.2A Load Figure 13. Steady State at 2A Load Figure 14. Startup by EN at 1A Load Figure 15. Shutdown by EN at 1A Load Figure 16. Overcurrent Protection Figure 17. Load Transient 1A to 3A to 1A R16UZ0059EU0100 Rev.1.00...

  • Page 11: Ordering Information

    RTKA211835DE0010BU Evaluation Board Manual Ordering Information Part Number Description RTKA211835DE0010BU RAA211835 (HTSSOP version) evaluation board Revision History Revision Date Description 1.00 Nov 4, 2022 Initial release R16UZ0059EU0100 Rev.1.00 Page 11 Nov 4, 2022...
  • Page 12 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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