概览

描述

The RAA210030 power module is a compact, single-channel, synchronous step-down, non-isolated complete power supply, capable of delivering up to 3A of continuous current. By operating from a single 2.7V to 5.5V input power rail and integrating the controller, gate driver, power inductor, and MOSFETs, the RAA210030 is optimized for space-constrained applications.

Based on a peak current mode control scheme, the RAA210030 provides a fast transient response and excellent loop stability. The output voltage can be set as low as 0.6V, with setpoint accuracy better than ±1.5% over line, load, and temperature. The operating frequency has a 2MHz default setting, however it can also be set from 500kHz to 4MHz by an external resistor. The external synchronization is also supported with an external clock signal up to 4MHz. The RAA210030 supports 100% duty cycle operation to minimize switching losses with typically 300mV dropout voltage. A dedicated enable pin and power-good flag allow for easy system power rails sequencing.

The RAA210030 can be configured for pulsed frequency modulation (PFM) or forced pulse width modulation (FPWM) at light load. FPWM reduces noise and RF interference, while PFM provides higher efficiency by reducing switching losses at light loads.

特性

  • 3A complete power supply
    • Integrates controller, gate driver, MOSFETs, and inductor
  • 2.7V to 5.5V input voltage range
  • Adjustable output voltage
    • As low as 0.6V with ±1.5% accuracy over line, load, and temperature
    • Up to 95% efficiency
  • Default 2MHz current mode control operation
    • 500kHz to 4MHz resistor adjustable
    • External synchronization up to 4MHz
    • 100% duty cycle
  • Dedicated enable pin and power-good flag
  • Internal 1ms soft-start time
  • Selectable PFM or FPWM mode
  • Soft-stop output discharge
  • UVLO, OCP, negative OCP, OVP, and OTP
    • OCP/Short-Circuit Protection (SCP) hiccup mode
  • Compact RoHS compliant 3mm×3mm×1.08mm (1.15mm Max) dual flat no-lead (DFN) embedded laminate package

Comparison

RAA210030 RAA210040
Input Voltage (Max) (V) 5.5 5.5
Input Voltage (Min) (V) 2.7 2.7
Output Current (Max) [Rail 1] (A) 3 4
Output Voltage (Max) (V) 5 5
Output Voltage (Min) (V) 0.6 0.6
Peak Efficiency (%) 95 95
Qualification Level Standard Standard
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应用

应用

  • Telecom, Industrial, optical, and medical equipment
  • Point-of-load conversions
  • MCU, MPU, DSP, and FPGA

文档

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