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STMicroelectronics L6986ITR | Demoboard STDES-SICGP4
38 V, 5 W synchronous iso-buck converter for isolated applications
Overview
| Topology | Half-Bridge Converter symmetrical isolated |
| Input voltage | 4-38 V |
| Output 1 | 20 A |
| IC revision | 1 |
Description
The STDES-SICGP4 reference design is based on SiC MOSFETs.The platform contains a half-bridge structure that supports HiP247-4 (TO247-4) packages. Gate driver and isolated auxiliary supply are also assembled. The external connection of a digital signal to the gate drivers inputs allows controlling MOSFETs by switching to a half-bridge structure. For instance, this kit allows testing the switching performance of the MOSFETs, using the double-pulse test method (DPT).This document shows an example of a switching energies test, using DPT, as well as measured waveforms and results calculated from them.The main board specification and the input/output connection are detailed in UM3044. Read this user manual before testing the platform.
Features
- Designed for iso-buck topology
- 4 V to 38 V operating input voltage
- Primary output voltage regulation / no optocoupler required
- 1.9 A typical sink peak primary current capability
- Peak current mode architecture in forced PWM operation
- 300 ns blanking time
- 8 µA IQ-SHTDWN
- Adjustable fSW and synchronization
- Embedded primary output voltage supervisor - Adjustable soft-start time
- Internal primary current limiting
- Overvoltage protection
- RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
- Thermal shutdown
Typical applications
- Solar converters
- Motor drivers, Automation
- Isolated power supply for SiC MOSFET and IGBT drivers, Isolated power supply for isolated interfaces (RS232, I2C, SPI, etc.), UPS
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Type | Wire Section | VIN (V) | VOut1 (V) | VOut2 (V) | PO (W) | CWW 1 (pF) | L (µH) | ISAT (A) | fswitch (kHz) | n | Version | IC Reference | f | Mount | Center Contact | Operating Temperature | W (mm) | H (mm) | Ti | Tl (mm) | Pins | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691213710002 | SPEC | – | 6 files | WR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular | Rising Cage Clamp | PCB | Yes | Horizontal | 26 to 16 (AWG) 0.5 to 1.5 (mm²) | – | – | – | – | – | – | – | – | – | – | – | – | THT | – | -40 °C up to +105 °C | – | – | – | – | 2 | |
 | 74650094R | SPEC | – | 6 files | WP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | THR | – | -55 °C up to +150 °C | 10 | 3.5 | M4 | 3 | 8 | |
 | 60311002111526 | SPEC | – | 6 files | WR-SMA PCB THT/THR/SMT | – | PCB | – | – | – | – | – | – | – | – | – | – | – | – | – | – | DC~6 GHz | THT | Ø 1.27 | -65 °C up to +165 °C | – | – | – | – | – | |
 | 750317894 | SPEC | 8 files | WE-AGDT Auxiliary Gate Drive Transformer | – | – | – | – | – | 9 - 18 | 15 | -4 | 3 | 7 | 18 | 1.6 | 350 | 2.25:3.5:1 | Flyback | LM5180 | – | SMT | – | -40 °C up to +130 °C | 10.95 | 11.94 | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 691213710002 | SPEC | – |
| 74650094R | SPEC | – |
| 60311002111526 | SPEC | – |
| 750317894 | SPEC |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Type | Wire Section | VIN (V) | VOut1 (V) | VOut2 (V) | PO (W) | CWW 1 (pF) | L (µH) | ISAT (A) | fswitch (kHz) | n | Version | IC Reference | f | Mount | Center Contact | Operating Temperature | W (mm) | H (mm) | Ti | Tl (mm) | Pins | Samples |
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