eBikes, drones, and consumer appliances are scaling battery architecture to use more Li-Ion cells in series, which is driving system power to higher voltages. In computing, migration to distributed 48 V server backplane architectures has begun, as rack power increases to meet the demands of cloud computing workloads.
Industrial, robotic, and telecom applications commonly use 48 V for system power. These high-power applications require efficient DC/DC conversion in order to supply the low voltage electronics, and there are specific challenges to this wide voltage conversion from high voltage (48 V/60 V) to low voltage (3.3 V/5 V/12 V).
In this 1-hour webinar, we will review the operation of DC/DC buck converters and compare benefits of common feedback control methods. The challenges of high step-down voltage conversion will also be presented, along with the DC/DC buck converter features that are required in order to maintain efficiency under these conditions.
The session will conclude with a case study of the L3751 device, a synchronous DC/DC buck controller that accepts a wide input from 6 V to 75 V and is well suited for this high step-down voltage conversion use-case.
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Time
Content
8:00 - 9:00
Registration and system check for pre-installed tools
Morning session: Stepper motors with STSPIN820 / POWERSTEP01
9:00 - 10:00
Stepper motor fundaments
Theory: What makes a stepper turn?
Voltage and current mode drive
Limitations,speed/torque,ect
9:00 - 10:00
Stepper motor fundaments
Theory: What makes a stepper turn?
Voltage and current mode drive
Limitations,speed/torque,ect
11:30 - 12:30
Lunch
11:30 - 12:30
Lunch
11:30 - 12:30
Lunch
11:30 - 12:30
Lunch
10:00 - 11:30
STSPIN820 or POWERSTEP01
Using the GUI to evaluate motor operation
Configuring motor control parameters with the GUI
Implementing a drive based on the firmware pack
10:00 - 11:30
STSPIN820 or POWERSTEP01
Using the GUI to evaluate motor operation
Configuring motor control parameters with the GUI
Implementing a drive based on the firmware pack
9:00 - 10:00
Stepper motor fundaments
Theory: What makes a stepper turn?
Voltage and current mode drive
Limitations,speed/torque,ect
11:30 - 12:30
Lunch
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
1:30 - 3:00
Implementing a 6-step drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Afternoon session: BLDC motors with STSPIN32F0
12:30 - 1:30
BLDC theory and fundamentals
# pole pairs
What makes FOC work (donkey and carrot example)
Sensoriess vs. Sensored feedback control
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
3:00 - 4:30
Implementing a FOC drive
Jeff Halio is a Product Marketing Engineer at STMicroelectronics, supporting the general purpose analog portfolio. Based in the Burlington, MA office, he joined ST in 2018 and has supported a wide variety of products at ST customers in the eastern US and Canada. Jeff graduated from Tufts University in 1994 with a BSEE.
The 6 V to 75 V wide input voltage range L3751 synchronous buck controller features extreme voltage conversion ratio over switching frequency range (100 kHz - 1 MHz) thanks to 40 nsec minimum conduction time. The diode emulation (DEM) implements pulse skipping mode that maximizes the efficiency at light-load while providing controlled output voltage ripple. The forced PWM (FPWM) over the load range makes the switching frequency constant and minimizes the output voltage ripple. The L3751 supports a Power Good open collector output, embedded gate driver, output overcurrent protection, input voltage UVLO, internal voltage monitoring, and thermal shutdown.
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