E-L8150 STMICROELECTRONICS [STMicroelectronics], E-L8150 Datasheet - Page 14

• Manufacturer Part Number: E-L8150
• Description: Brushless motor predriver
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

General description
4.5
4.6
4.7
4.8
4.9
4.10
14/37
Protection Functions
Lower voltage protection: all power TR OFF (all 6 outputs = GND), if VCC is lower than a
defined voltage threshold (All power Transistors OFF if VCC is between 0 to the defined
voltage threshold). Return to normal operation if VCC is recovered from lower voltage
condition. An hysteresis is present.
Thermal protection: all power transistors OFF by external thermal sense signal. If signal is
high (exceeds Vth), the power is OFF (all 6 output = GND).
Hall sensor fail protection: all power transistor OFF (all output = GND) if Hall signals are
HHH or LLL (Hall signals after digital filter are used).
Power ON reset (SD): internal logic reset when power ON or recovery from short time Power
OFF. All power transistor OFF (all 6 outputs = GND) during reset.
PWM
carrier frequency: 17-21kHz for Tj = 0 to 125 deg, 18kHz - 20.4kHz for Tj = 25 °C.
System Clock
Internal oscillator: Fsys =1/Tck= 9.8 MHz typical value.
One pin for external resistor sets the clock frequency (OSC pin).
External HVIC Bootstrap Capacitor Initialization
Lower arm ALL ON (3 outputs for low side are High, 3 outputs for High side are GND) when
VSP becoming ON (free run release), (while this initialization should not be done when VSP
becoming OFF) initializing time is 0.333 - 0.5 msec.
Package
28 pins SO28. It is suitable for both reflow and flow soldering.
Others
Upper and lower arm PWM during rectangular drive; it means both side (upper and lower)
chopping, not one side chopping, during rectangular drive).
–
–
Over-current protection: Low side current recirculation for both smooth and
rectangular drive in normal working condition.
Over-voltage protection: compare motor supply VDC (140V, 280V) and IC internal
reference. All power transistor OFF (all 6 outputs = GND) during over-voltage.
Return to normal operation if VDC is recovered from over-voltage condition. An
hysteresis is present.
L8150