STEVAL-ISA108V1:4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package

Based on the ST1S41 step-down switching regulator, the STEVAL-ISA108V1 demonstration board is an internally-compensated 850 kHz fixed-frequency PWM synchronous step-down converter.

The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN(100% duty cycle).

The ST1S41 integrates a 95 mΩ high side switch and 69 mΩ low side synchronous rectifier, resulting in very high efficiency with very low output voltages.

The peak current mode control with internal compensation offers a compact solution with a minimum component count.

Key Features

  • 4 to 18 V input voltage
  • Output voltage adjustable from 0.8 V
  • 850 kHz switching frequency
  • Internal soft-start
  • Integrated 95 mΩ and 69 mΩ power MOSFETs
  • All ceramic capacitor
  • Enable function
  • Cycle-by-cycle current limiting
  • Current fold-back short-circuit protection
  • RoHS compliant
产品规格
DescriptionVersionSize
DB1883: 4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package1.0136 KB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-ISA108V1 gerber files1.0185 KB
Bill of Materials
DescriptionVersionSize
STEVAL-ISA108V1 BOM1.153 KB
Schematic Packs
DescriptionVersionSize
STEVAL-ISA108V1 schematics3.082 KB
许可协议
DescriptionVersionSize
Evaluation products license agreement1.0125 KB
样片和购买
型号Core ProductUnit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
STEVAL-ISA108V1ST1S41PUR37.981NECEAR99ITALY
质量和可靠性
型号PackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-ISA108V1CARDIndustrialEcopack2
4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package STEVAL-ISA108V1
4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package STEVAL-ISA108V1
4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package STEVAL-ISA108V1
4 A, 850 kHz fixed-frequency PWM synchronous step-down demostration board based on the ST1S41 in a VFQFPN package STEVAL-ISA108V1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2