L8150 Datasheet, PDF (1/37 Pages) STMicroelectronics – Brushless motor predriver

L8150
Brushless motor predriver
Feature
■ Integrated Predriver IC for 3 phase BL motor.
■ Integrated Smooth driving concept with
sinusoidal driving waveforms.
■ BCD5 technology 0.6mm.
■ Package: SO28.
■ Three Hall effects, differential input
comparators.
■ Integrated Undervoltage lockout (VCC).
■ PWM output duty (voltage) control / Torque
optimizer / protection functions
■ PWM carrier 17kHz min / integrated dead time
Functions
■ C-MOS level predriver output (high active)
■ Free Run function
■ Dead time (3 values selectable)
■ Sinusoidal waveform PWM logic
■ Detected rotation speed (FG) output terminal
■ PWM duty control by analog input (KVAL
control)
■ Forward/backward rotation input terminal (FR)
/ rotation direction detection output terminal
(DM)
■ Thermistor connection terminal (thermal
protection)
■ Torque optimizer terminal controlled by analog
voltage input
■ V regulator output terminalExternal HVIC
bootstrap capacitor pre-charge function
Order codes
Part number
E-L8150
E-L8150TR
Temp range, °C
-20 to 95
-20 to 95
SO28
■ External HVIC bootstrap capacitor refresh
function during 120 degree drive (rectangular
drive).
■ This means both upper and lower chopping
and low side current recirculation for
rectangular drive.
■ Current limiter circuit
■ VCC lower voltage protection / VDC over
voltage protection circuit / Hall sensor fail
protection
■ FAULT signal output
Description
The L8150 device is a motor predriver intended to
drive brushless fan motors with Hall effect
sensors. The device, realized in BCD5 0.6mm
mixed technology, is characterized by a mostly
digital architecture assuring high integration
density and high test coverage.
The L8150 with few external components forms a
complete control circuit, since the smooth driver
logic is fully integrated: its peculiar driving solution
(smooth driving) allows a very low current ripple
and speed control even at low rotation speeds.
Package
SO28
SO28
Packing
TUBE
Tape & Reel
March 2006
Rev 1
1/37
www.st.com
1