Rohm BD9P2 6EFV-C Series User Manual

Primary Buck DC/DC Converter Series
Single 440 kHz Buck DC/DC Converter
For Automotive
BD9P2x6EFV-C Series Evaluation Board
BD9P2x6EFV-TSB-001 (3.5 V to 40 V Input, 2.0 A)
Introduction
This user's guide will provide the necessary steps to operate the Evaluation Board of ROHM's BD9P2x6EFV-C series Buck
DC/DC converter which includes BD9P206EFV-C, BD9P236EFV-C, and BD9P256EFV-C. This includes the external parts,
operating procedures and application data.
Description
This Evaluation Board was developed for ROHM's single 440 kHz buck DC/DC converter BD9P2x6EFV-C series.
BD9P2x6EFV-C series is a current mode synchronous buck DC/DC converter with integrated POWER MOSFETs.
BD9P2x6EFV-C series accepts a power supply input range of 3.5 V to 40 V and generates a maximum output current of 2 A.
BD9P206EFV-C generates an output voltage range of 0.8 V to 8.5 V using external resistors. BD9P236EFV-C generates a
fixed output voltage of 3.3 V, and BD9P256EFV-C generates a fixed output voltage of 5.0 V.
Application
Automotive Powered Supplies
Consumer Powered Supplies
Recommended Operating Conditions
Parameter
Input Voltage
Output Voltage for BD9P206EFV-C
Output Voltage for BD9P236EFV-C
Output Voltage for BD9P256EFV-C
Output Current Range
Switching Frequency
Maximum Efficiency(BD9P236EFV-C)
Maximum Efficiency(BD9P256EFV-C)
(Note1) Although the minimum output voltage is configurable up to 0.8 V, it may be limited by the SW min ON pulse width. For
the same reason, although the maximum output voltage is configurable up to 8.5 V, it may be limited by the SW minimum OFF
pulse width.
© 2024 ROHM Co., Ltd.
Table 1. Recommended Operating Conditions
Min Typ
3.5 -
(Note1)
0.8 -
- 3.3
- 5.0
- -
- 440
- 92.9
- 94.7
User's Guide
Max Units
40 V Initial startup is 4.0 V or more
8.5 V
- V
- V
OCP_SEL = H : 1.5 A (Max)
2.0 A
OCP_SEL = L : 2.0 A (Max)
- kHz
VIN = 12 V, Io = 0.53 A, Ta =
- %
25 °C
- % VIN = 12 V, Io = 0.7 A, Ta = 25 °C
The
Conditions
67UG076E Rev.001
Sep.2024