STEVAL-ISA084V1：4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40
The STEVAL-ISA084V1, based on the ST1S40, is an internally compensated 800 kHz fixed-frequency PWM synchronous step-down converter demonstration board.
The ST1S40 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 ST1S40 integrates 95 mΩ high side switch and 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.
The device is protected through cycle-by-cycle current limiting in case of overload and is also protected by current foldback function with frequency reduction in case of short-circuit
The device is available with an enable on/off function.
Key Features
- Vin : 4 V to 18 V
- Vout: 3.3 V
- Maximum output current: 4 A
- Switching frequency: 800 kHz
- Short-circuit: protected
- RoHS compliant
Product Specifications
| Description | Version | Size |
|---|---|---|
| DB1494: 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 | 1.1 | 102 KB |
Board Manufacturing Specifications
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA084V1 gerber files | 4.1 | 143 KB |
Bill of Materials
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA084V1 BOM | 1.0 | 37 KB |
Schematic Packs
| Description | Version | Size |
|---|---|---|
| STEVAL-ISA084V1 schematics | 1.0 | 49 KB |
License Agreement
| Description | Version | Size |
|---|---|---|
| Evaluation products license agreement | 1.0 | 125 KB |
Sample & Buy
| Part Number | Core Product | Unit Price (US$) * | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|---|---|---|---|---|---|
| STEVAL-ISA084V1 | ST1S40IDR | 30.63 | 1 | NEC | EAR99 | ITALY |
Quality & Reliability
| Part Number | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|
| STEVAL-ISA084V1 | CARD | Industrial | Ecopack2 |
- 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 STEVAL-ISA084V1
- 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 STEVAL-ISA084V1
- 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 STEVAL-ISA084V1
- 4 A peak, 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40 STEVAL-ISA084V1
- ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2
