BM2P121X-Z - Documentation

The PWM type DC/DC converter for AC/DC provides an optimum system for all products that include an electrical outlet. It enables simpler design of a high effective converter specializing in non-isolation. By a built-in startup circuit that tolerates 650V, this IC contributes to low power consumption. A current detection resistor as internal device realizes the small power supply designs. Since a current mode control is utilized, the current can be restricted in each cycle and an excellent performance is demonstrated in the bandwidth and transient response. The switching frequency is fixed to 65kHz. A frequency hopping function is also on chip, and it contributes to low EMI. In addition, a built-in super junction MOSFET which tolerates 650V makes the design easy.

* This is a standard-grade product.
For Automotive usage, please contact Sales.

User's Guide

Reference Board BM2P121X-EVK-001
AC/DC Converter Non-Isolation Buck Converter PWM method 9W 12V BM2P121X Reference Board

Application Note

Importance of Probe Calibration When Measuring Power: Deskew
Even when devices used for measurement are calibrated regularly, they will give incorrect results if calibration is not perfo rmed for the measurement environment. This application note explains the importance of probe calibration in power measurement environments.
Thermal Resistance
The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.
Impedance Characteristics of Bypass Capacitor
This application note focuses on the impedance characteristics of capacitors, and explains cautions for selecting bypass capacitors.
Package Ordering Unit
For ICs