BD9611MUV-EVK-001 ROHM

ROHM Switching Regulator Solutions Synchronous Buck Converter Controller BD9611MUV-EVK-001 Description Using a synchronous rectified step-down DC/DC converter IC BD9611MUV BD 9611MUV-EVK-001 evaluation board 15.0 V ~ output a 24 V input voltage 12.0 V. Provides 10.0A output current. Output current is possible with current settings by selecting high rated current FET and coil. You can adjust the loop characteristics by phase compensation components, can set the output voltage to change the IC external parts. Evaluation Board Operating Limits and Absolute Maximum Ratings This is not typical and the characteristics Unless otherwise specified V = 24V, V = 12.0V, Iout=6A IN OUT Parameter Min Typ Max Units Conditions Supply Voltage 15 36 V RU1=120k, RU2=20k, Output Voltage 12.0 V RD1=10k Output Voltage range 1 V 0.8 V IN Output Current 0 10 A Closed Loop Band Width 30.19 kHz Phase margin 130 27 degrees Iout=8A Soft Start Time 8 ms Operating frequency 250 kHz Maximum Efficiency 95.1 % I = 4A O www.rohm.co.jp 2015 ROHM Co., Ltd. All rights reserved. 1/10 2015.12 - Rev.003 BD9611MUV-EVK-001 Evaluation Board Operation Procedures 1. Connect power supplys GND terminal to GND on the evaluation board. 2. Connect power supplys VCC terminal to Vcc test point on the evaluation board. This will provide VCC to the IC U1. Please note that the VCC should be in range of 10V to 56V. 3. The output voltage can be measured at the test point VOUT. Now turn on the load. The load can be increased up to 10A MAX. + V DC voltmeter 2 - + V DC voltmeter 1 - + + DC power Load current supply - - Figure 1. Evaluation board setup Enable You can switch between normal operation and standby mode to minimize power consumption by controlling the CTL of the IC (19 pin). Open to short and SW1 R9, as VIN pin resistance partial pressure using R5, R6, R7, R8, switch SW1 on the off side and in standby mode. Short between the middle and ON-side. You can also by CTL pin and GND terminals of voltage to control and eliminate the R9 standby mode or normal behavior. CTL Terminal voltage is 2.6 V or less in standby mode: 2.6 V or more usually works. If CTL terminals directly controlling voltage hysteresis voltage at low current internal and external resistance is set so the hysteresis voltage voltage supplying CTL terminal by the impedance of the power supply and internal constant current. www.rohm.co.jp 2015 ROHM Co., Ltd. All rights reserved. 2/10 2015.12 - Rev.003 www.rohm.co.jp