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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
- Isolated power supply for SiC MOSFET and IGBT drivers, Isolated power supply for isolated interfaces (RS232, I2C, SPI, etc.), UPS
- Solar converters
- Motor drivers, Automation
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | 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 | Ingress Protection Code | f | Mount | Center Contact | Operating Temperature | W(mm) | H(mm) | Ti | Tl(mm) | Pins | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular, Rising Cage Clamp, PCB | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular | PCB/Cable/PanelPCB | ModularityYes | TypeHorizontal | Wire Section 26 to 16 (AWG) 0.5 to 1.5 (mm²) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | – | Operating Temperature -40 °C up to +105 °C | – | – | – | – | Pins2 | ||
 | WP-THRBU REDCUBE THR with internal through-hole thread, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWP-THRBU REDCUBE THR with internal through-hole thread | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHR | – | Operating Temperature -55 °C up to +150 °C | Width10 mm | Height3.5 mm | Inner ThreadM4 | Thread Length3 mm | Pins8 | |||
 | WR-SMA PCB THT/THR/SMT, –, PCB | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-SMA PCB THT/THR/SMT | PCB/Cable/PanelPCB | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Ingress Protection CodeNone | Frequency RangeDC~6 GHz | MountTHT | Center ContactØ 1.27 | Operating Temperature -65 °C up to +165 °C | – | – | – | – | – | |||
 | WE-AGDT Auxiliary Gate Drive Transformer, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-AGDT Auxiliary Gate Drive Transformer | – | – | – | – | Input Voltage 9 - 18 | Output Voltage 115 V | Output Voltage 2-4 V | Total Output Power3 W | Interwinding Capacitance7 pF | Inductance18 µH | Saturation Current1.6 A | Switching Frequency 350 | Turns Ratio2.25:3.5:1 | VersionFlyback | IC ReferenceLM5180 | – | – | MountSMT | – | Operating Temperature -40 °C up to +130 °C | Width10.95 mm | Height11.94 mm | – | – | – |