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reference designBRD2469W | Demoboard RDR-975

Power Integrations BRD2469W | Demoboard RDR-975

RDR-975 - 750 W (~1 HP) 3-Phase Inverter Using BridgeSwitch-2

Overview

TopologyBuck Converter
Input voltage340 V
IC revisionA

Description

This document presents a 750 W, three-phase inverter designed for high-voltage brushless DC (BLDC) motor applications, utilizing three BridgeSwitch™-2 BRD2469WB devices, achieving 97.6% efficiency with a peak of 98.5%. It details both the device and system level performance, as well as the fault protection capabilities provided by the highly integrated BridgeSwitch-2 half-bridge motor driver IC. A high-voltage buck converter, implemented with minimal component count using the LinkSwitch™-TN2 LNK3205D device, supplies the required external bias for the BRD2469WB components. An optional current sense amplifier is also included to support applications requiring shunt resistor based current feedback.

Features

  • BridgeSwitch-2 high-voltage half-bridge motor driver
  • Integrated 600 V FREDFETs with ultra-soft, fast recovery diodes
  • No heat sink
  • High-side and low-side cycle-by-cycle current limit
  • Optional latching low-side current limit
  • Configurable latching or hysteretic over-temperature protection
  • High-voltage bus monitor for overvoltage protection (OVP)
  • Error flagging through the Error Flag (EF) pin or FAULT bus on the MCU interface
  • Supports any microcontroller (MCU) for sensorless field-oriented control (FOC) through the signal interface
  • Instantaneous phase current output through the IPH pin of each BridgeSwitch-2 device
  • +3.3 V supply available through the interface

Typical applications

  • High-Voltage Brushless DC (BLDC) Motor Drive

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IR(A)
ISAT(A)
RDC max.(Ω)
fres(MHz)
C
VR(V (DC))
Endurance(h)
IRIPPLE(mA)
ILeak(µA)
DF(%)
Pitch(mm)
Ø D(mm)
L(mm)
Packaging
Pins
Type
Mount
PCB/Cable/Panel
H(mm)
SamplesAvailability & Sample
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744776268
SPECWE-PD2 SMT Power Inductor, 680 µH, 0.36 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD2 SMT Power Inductor
Inductance680 µH
Rated Current0.36 A
Saturation Current0.43 A
DC Resistance2.25 Ω
Self Resonant Frequency2.7 MHz
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Length9 mm
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MountSMT 
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Height5.4 mm
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861221485017
SPECWCAP-AIE8 Aluminum Electrolytic Capacitors, –, –
Simu­lation
Availability
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Downloads8 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWCAP-AIE8 Aluminum Electrolytic Capacitors
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Capacitance330 µF
Rated Voltage450 V (DC)
Endurance 3000
Ripple Current2650 mA
Leakage Current1156.1 µA
Dissipation Factor20 %
Pitch10 mm
Diameter30 mm
Length40 mm
PackagingTray 
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MountSnap-In 
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620102131822
SPECWR-WTB 2.00 mm Male Pin Header, –, 2 A
Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-WTB 2.00 mm Male Pin Header
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Rated Current2 A
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Pitch2 mm
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Length8 mm
PackagingTape and Reel 
Pins2 
TypeHorizontal 
MountSMT 
PCB/Cable/PanelPCB 
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