IC manufacturers Renesas

IC manufacturers (104)

Renesas RAA212831 | Demoboard RTKA212831DR0000BU

72V 0.5A Step-Down Regulator with Two 5V and 3.3V LDO Outputs

Overview

TopologyBuck Converter
Input voltage4.5-72 V
Output 124 V / 0.5 A
IC revision1.00

Description

The RTKA212831DR0000BU provides a simple platform to demonstrate the performances of the RAA212831. The RAA212831 is an integrated 72V input voltage, 0.5A output load one synchronous buck regulator with fixed switching frequency from 350kHz and two 100mA, and 50mA output load linear regulators LDOs. The buck can support a wide input voltage range of 14V to 72V and adjusted output voltage from 1.25V to 24V. The LDO_3V3 can support a wide input voltage range of 6V to 12V, and the output voltage is fixed at 3.3V. The LDO_5 can support a wide input voltage range of 6V to 12V, and the output voltage is fixed at 5V. It is designed for small size and high integration electric-bike control board power management. Integrated buck and LDOs minimize the system components.

Features

  • Buck Converter:
  • 4.5V to 72V input voltage
  • Adjustable output voltage from 1.25V to 24V
  • 500mA output load capability
  • 0.6Ω high-side MOSEFT rDS(ON)
  • Fixed switching frequency 350kHz operation
  • High side OCP, UVP, UVLO, OTP fault protection
  • 5V LDO Regulator:
  • 6V to 12V input voltage
  • Fixed output voltage 5V
  • 100mA output load capability
  • Current limit foldback function
  • 3.3V LDO Regulator:
  • 6V to 12V input voltage
  • Fixed output voltage 3.3V
  • 50mA output load capability
  • Current limit foldback function

Typical applications

  • Motor driver control board power supply, Electric-bike power management

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L(µH)
IR(A)
ISAT(A)
RDC(mΩ)
fres(MHz)
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SPECWE-LQS SMT Power Inductor, 120 µH, 1.15 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Inductance120 µH
Rated Current1.15 A
Saturation Current1.45 A
DC Resistance347 mΩ
Self Resonant Frequency6 MHz
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