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ROHM Semiconductor BD28C5xFJ-LB PWM Types DC-DC Converters

ROHM Semiconductor BD28C5xFJ-LB PWM Types DC-DC Converters for AC-DC provide an optimal system for products requiring an electrical outlet. These ICs support isolated and non-isolated devices and enable simpler designs of various low-power consumption electrical converters. These devices have a VDD Under-Voltage Lock-Out (UVLO) lineup supporting Si and SiC MOSFETs.

Power supplies can be designed flexibly by connecting a current detection resistor externally for the switching. The current is restricted in each cycle, and excellent performances are demonstrated in the bandwidth and transient response since a current-mode control is utilized. An external resistor and capacitor can set the switching frequency of the ROHM Semiconductor BD28C5xFJ-LB on the RTCT pin.

Features

  • PWM current mode method
  • Low power consumption
  • UVLO function on the VDD pin
  • Overcurrent protection function is available per cycle
  • Includes a switching frequency setting pin

Applications

  • Industrial equipment
  • PV inverters

Specifications

  • 6.90V to 28.00V input voltage range
  • 2.0mA (max.) circuit current
  • 60μA (typ.) startup current
  • -40°C to +125°C operating temperature range

Block Diagram

Block Diagram - ROHM Semiconductor BD28C5xFJ-LB PWM Types DC-DC Converters
Published: 2025-07-23 | Updated: 2025-08-06