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Switching Regulator Series
Integrated MOSFET Single Synchronous
Buck DC/DC Converter
BD9E202FP4-Z Evaluation Board
BD9E202FP4-EVK-001 (4.5V to 28V Input, 2A)
Introduction
This user's guide will provide the necessary steps to operate the Evaluation Board of ROHM's BD9E202FP4-Z Single
Synchronous Buck DC/DC converter. This includes the external parts and operating procedures. For the reference application
data please refer to the datasheet.
Description
This Evaluation Board was developed for ROHM's single Synchronous buck DC/DC converter BD9E202FP4-Z. BD9E202FP4-
Z is a synchronous buck DC/DC converter with built-in low On Resistance power MOSFETs. The Light Load Mode control
provides excellent efficiency characteristics in light-load conditions, which makes the product ideal for equipment and devices
that demand minimal standby power consumption. BD9E202FP4-Z has Frequency spread spectrum. BD9E202FP4-Z
includes internal phase compensation. It achieves the high power density and offers a small footprint on the PCB by employing
small package.
Application
Home Appliance Products
Secondary Power Supply and Adapter Equipment
Telecommunication Devices
Recommended Operating Conditions
Parameter
Input Voltage
Output Voltage
Output Current Range
Switching Frequency
Maximum Efficiency
(Note 1) Tj must be 150 °C or less under the actual operating environment. Lifetime is derated at junction temperature greater
than 125 °C.
(Note 2) Please use within the range of VOUT ≥ VIN × 0.1 V.
© 2023 ROHM Co., Ltd.
Table 1. Recommended Operating Conditions
Min
Typ
4.5
-
0.7
-
0
-
-
500
-
95.5
User's Guide
Max
Units
28
V
V
x 0.8
V
(Note 2)
IN
2.0
A
-
kHz
VIN = 12.0 V, Vo = 5.0 V, Io =
-
%
0.45 A, Ta = 25 °C
Conditions
66UG056E Rev.001
Aug.2023
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Summary of Contents for Rohm BD9E202FP4-Z
- Page 1 BD9E202FP4-EVK-001 (4.5V to 28V Input, 2A) Introduction This user’s guide will provide the necessary steps to operate the Evaluation Board of ROHM’s BD9E202FP4-Z Single Synchronous Buck DC/DC converter. This includes the external parts and operating procedures. For the reference application data please refer to the datasheet.
- Page 2 (Caution) This Evaluation Board does not support hot plug. Do not perform hot plug test. (Note 1) EN voltage is divided by R4 and R5 from VIN, the IC’s power can only be controlled by VIN. © 2023 ROHM Co., Ltd. 66UG056E Rev.001...
- Page 3 ROHM Chip Resistor R4 (Note5) 1005 510 kΩ (1 %, 1/16 W) MCR01MZPF5103 ROHM Chip Resistor R5 (Note5) 1005 82 kΩ (1 %, 1/16 W) MCR01MZPF8202 ROHM Chip Resistor R0 (Note6) Short © 2023 ROHM Co., Ltd. 66UG056E Rev.001 Aug.2023...
- Page 4 (Note 7) If the recommended parts on tables 2, 3 and 4 are not available anymore due to end of production, different parts will be used on the test board because the end of production parts are deprecated. © 2023 ROHM Co., Ltd. 66UG056E Rev.001...
- Page 5 114.3mm x 76.2mm x 2oz(70μm) / 1oz (35μm) / 1oz (35μm) / 2oz(70μm) FR-4 1.6mm The layout of BD9E202FP4-Z is shown below: Figure 4. Top PCB Image Figure 5. Bottom PCB Image Figure 6. Top Layer Layout Figure 7. Middle1 Layer Layout ©...
- Page 6 BD9E202FP4-Z User’s Guide Figure 8. Middle2 Layer Layout Figure 9. Bottom Layer Layout © 2023 ROHM Co., Ltd. 66UG056E Rev.001 Aug.2023...
- Page 7 BD9E202FP4-Z User’s Guide Revision History Revision Date Description Number 24. Aug. 2023 New release © 2023 ROHM Co., Ltd. 66UG056E Rev.001 Aug.2023...
- Page 8 Specific Applications). Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses, or losses incurred by you or third parties arising from the use of ROHM Products for Specific Applications.
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