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reference designRAA212832 | Demoboard RTKA212832DR0000BU

Renesas RAA212832 | Demoboard RTKA212832DR0000BU

72V 0.5A Step-Down Regulator with Fixed 6V or 12V Output, with Two 5V and 3.3V LDO Outputs and Standby Feature

Overview

TopologyBuck Converter
Input voltage4.5-72 V
Output 112 V / 0.5 A
IC revision1.00

Description

The RTKA212832DR0000BU provides a simpleplatform to demonstrate the performances of the RAA212832. The RAA212832 is an integrated 72V input voltage, 0.5A output load one synchronous buck regulator with a 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 a fixed output voltage of 12V. 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
  • Fixed output voltage 12V
  • 500mA output load capability
  • 0.6Ω high-side MOSEFT rDS(ON)
  • Fixed switching frequency 350kHz operation
  • 6V standby function by STBY pin setting
  • High-side OCP, UVP, UVLO, OTP faultprotection
  • 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

More information

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74404084121
SPECWE-LQS SMT Power Inductor, 120 µH, 1.15 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
Inductance120 µH
Rated Current1.15 A
Saturation Current1.45 A
DC Resistance347 mΩ
Self Resonant Frequency6 MHz
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