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STMicroelectronics L6986ITR | Demoboard STDES-SICGP4

38 V, 5 W synchronous iso-buck converter for isolated applications

Details

TopologieGegentaktwandler (Halbbrücken)
Eingangsspannung4-38 V
Ausgang 120 A
IC-Revision1

Beschreibung

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.

Eigenschaften

  • 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

Typische Anwendungen

  • 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

Weiterführende Informationen

Artikeldaten

Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieAnwendungPCB/Kabel/PanelModularityTypWire SectionVin
(V)
VOut1
(V)
VOut2
(V)
PO
(W)
CWW 1
(pF)
L
(µH)
ISAT
(A)
fswitch
(kHz)
nVersionIC-ReferenzfMontageartMittelkontaktBetriebstemperaturW
(mm)
H
(mm)
TiTl
(mm)
Pins Muster
691213710002SPEC
6 Dateien WR-TBL Series 213 - 5.00 mm Horiz.l Entry Modular Rising Cage Clamp PCB Ja Horizontal 26 to 16 (AWG) 0.5 to 1.5 (mm²) THT -40 °C up to +105 °C 2
74650094RSPEC
6 Dateien WP-THRBU REDCUBE THR with internal through-hole thread THR -55 °C up to +150 °C 10 3.5 M4 3 8
60311002111526SPEC
6 Dateien WR-SMA PCB THT/THR/SMT PCB DC~6 GHz THT Ø 1.27 -65 °C up to +165 °C
750317894SPEC
8 Dateien 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
Artikel Nr. Daten­blatt Simu­lation
691213710002SPEC
74650094RSPEC
60311002111526SPEC
750317894SPEC
Muster
Artikel Nr. Daten­blatt Simu­lation Downloads ProduktserieAnwendungPCB/Kabel/PanelModularityTypWire SectionVin
(V)
VOut1
(V)
VOut2
(V)
PO
(W)
CWW 1
(pF)
L
(µH)
ISAT
(A)
fswitch
(kHz)
nVersionIC-ReferenzfMontageartMittelkontaktBetriebstemperaturW
(mm)
H
(mm)
TiTl
(mm)
Pins Muster