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Overview
| Topology | Buck-Boost Converter |
| Input voltage | 5.5-15 V |
| Output 1 | 8 V / 0.07 A |
| Output 2 | 12 V / 0.05 A |
| Output 3 | 15 V / 0.04 A |
| Output 4 | 10 V / 0.06 A |
| IC revision | 1 |
Description
The STSPIN32G4 is an advanced controller for driving three-phase brushless motors that integrates a triple half-bridge gatedriver, one high performance STM32G431 microcontroller and a flexible power management circuitry. In particular, one Buckconverter is available to efficiently generate gate driver supply voltage, VCC, starting from motor supply VM.When VM voltage is reduced approaching target VCC voltage, the Buck converter is not able to properly regulate its outputvoltage that is consequently lower than input supply level. A reduction of system performance could arise during these lowsupply voltage operations since power MOSFETs of the motor inverter might be turned on with a not optimal gate voltageproviding increased channel resistance and power losses.This application note describes how to convert the Buck regulator integrated inside STSPIN32G4 into a Buck-Boost regulatorwith few external components.The presented solution can be beneficial for battery powered applications to achieve best system efficiency
Typical applications
- 3-phase brushless motor controller
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | V (V) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 74438323068 | SPEC | 9 files | WE-MAPI SMT Power Inductor | 6.8 | 1.05 | 2 | 563 | 30 | 80 | SMT |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 74438323068 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | L (µH) | IRP,40K (A) | ISAT,30% (A) | RDC typ. (mΩ) | fres (MHz) | V (V) | Mount | Samples |
|---|