HIGH VOLTAGE MONOLITHIC IC
ECN30105
Brushless DC (BLDC) Single-Chip Motor Drive IC
The ECN30105 is a fully integrated, single-chip BLDC motor driver that facilitates a rapid
design process and low part count solution. The chip integrates BLDC Logic with a 3-Phase
Inverter containing six (6) 250V rated IGBTs and a Charge Pump TOP Arm bias. To reduce
motor current losses, a BLDC motor can now be driven directly from rectified 110VAC (up to
185VDC) power lines, or from any DC power bus down to 20VDC. On-Chip Brushless
(electronic) commutation logic is fully integrated with analog OSC/PWM functions that permit
an analog (VSP) voltage to control motor speed.
Description
• Integrated, Single-Chip Direct BLDC Motor Driver IC
• Operates 3-Phase BLDC motors from a 185VDC (down to 20VDC) voltage bus
• Integrated Charge Pump - Creates constant TOP Arm bias independent of motor speed
• Integrated 3-Phase Brushless (Electronic) commutation via external Hall ICs
• Integrated 3-Phase 6-IGBT Motor Bridge with on-chip free-wheeling diodes
• Pinout and Board Layout are compatible with the existing Hitachi ECN3018
• Breakdown, Max rated 250VDC/1.8A
• Latch-Up Free monolithic IC - Built with a high voltage Dielectric Isolation (DI) process
• Available in 3 package types with a built-in heat sink (Tab)
Functions and Features
• Simple Variable Speed Control via a single (VSP) analog input
• PWM Speed Control without requiring a MicroController
• PWM duty cycle generator provides a 0% to 100% speed control range
• Tachometer - Generates a (RPM/60)x(P/2)x3 Hertz speed signal (FG)
• BOTTOM Arms switch at up to 20kHz via an on-chip OSC/PWM
• On-Chip 7.5VDC regulator (CB) with a guaranteed Min load (25mA)
• Over-Current protection is set by an external Sense Resistor (RS)
• Under-Voltage protection for TOP and BOTTOM IGBT Arms
• Low Stand-By power
• An all output IGBT Shut-OFF function
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