IC-Hersteller Analog Devices
IC-Hersteller (103)
- Alle Hersteller
Analog Devices
Infineon Technologies
Microchip
Onsemi
Renesas
ROHM
STMicroelectronics
Texas Instruments
- 3peak incorporated (28)
- Ablic (23)
- Acco Semiconductor (1)
- Advanced Power (4)
- Allegro Microsystems (100)
- Alpha & Omega Semiconductor (37)
- AnalogySemi (3)
- AnDAPT Inc (204)
- Anpec (13)
- AXElite (2)
- Backward (6)
- Bright Power Semiconductor (1)
- Broadcom (46)
- Cambridge GaN Devices (18)
- Chipanalog Micro (10)
- Cologne Chips (1)
- Convenient Power (1)
- Dialog Semiconductor (12)
- Diodes Incorporated (259)
- Divimath (8)
- Elmos AG (1)
- EPC (136)
- e-Peas Semiconductors (1)
- Eta Solutions Co. Ltd. (9)
- GaN Systems (8)
- GaNPower (3)
- Giantec (1)
- Gstek Wuxi (1)
- Helix Semiconductor (7)
- IKON (1)
- Indie Semiconductor (8)
- Innovision Semiconductor Inc (2)
- Intel (68)
- Inventchip Technology (3)
- ISSI (51)
- JoulWatt (20)
- KDPOF (3)
- Kinetic Technology (8)
- Lattice semiconductor Corporation (38)
- Littelfuse (1)
- Lumissil Microsystems (8)
- M3 Technology (M3Tek) (7)
- Macnica (22)
- Marvell Semiconductor (1)
- MaxLinear (181)
- Menlo Micro (1)
- MikroE (25)
- MindCet (2)
- Monolithic Power Systems (980)
- Navitas Semiconductor Inc (6)
- NewEdge Technologies, Inc. (1)
- Nexperia (266)
- Nisshinbo Micro Device Inc. (10)
- Novosense Micro (1)
- NXP (333)
- O2 Micro International Ltd (10)
- On Bright (7)
- Panasonic (2)
- PN Junction Semiconductor (2)
- Power Integrations (117)
- Powermat (1)
- Pulsiv (19)
- Qorvo (96)
- Realsil SuRealsil(tek) Microelectronics (1)
- Richtek (297)
- Sanken Electric Co., Ltd. (16)
- Sckipio (6)
- Semtech (86)
- SG-Micro (54)
- SiFive (2)
- Silanna Semiconductor (9)
- Silergy Corporation (33)
- Silicon Laboratory Inc. (108)
- Silicontent Technology (59)
- Silvertel (59)
- Skycore Semiconductors (1)
- Skyworks (33)
- Southchip (14)
- Summit Wireless (1)
- Tagore Tech (7)
- Taiwan Semiconductor (1)
- TDK Corporation (1)
- Tempo Semiconductor (1)
- Torex (37)
- Toshiba (25)
- Transphorm (21)
- TransSIP (2)
- Union (21)
- uPI Semiconductor (2)
- Valens Semiconductor (31)
- Wise Integration (3)
- Wolfspeed (23)
- Xilinx (22)
- XL Semiconductor (3)
- XYSemi (62)
Analog Devices LTC7890 | Demoboard DC2938A
High Frequency, Dual Output, Synchronous Buck Converter Using GaN FETs
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 30-72 V |
| Schaltfrequenz | 100-3000 kHz |
| Ausgang 1 | 12 V / 20 A |
| Ausgang 2 | 5 V / 20 A |
Beschreibung
Demonstration circuit 2938A is a dual output nonisolated synchronous step-down converter that drives all N-channel gallium nitride (GaN) FET power stages. DC2938A features the LTC®7890, a low quiescent current high frequency (programmable fixed frequency from 100kHz up to 3MHz) dual step-down DC/DC synchronous controller, with dedicated driver feature for GaN FET housed in a small 6mm × 6mm QFN package.The DC2938A operates over an input voltage range from 30V to 72V, while the LTC7890 can operate up to 100V. The DC2938A demo board produces two outputs: 5V and 12V with up to 20A output, respectively. DC2938A is configured with a sense resistor for current sensing. A mode selector allows the DC2938A to operate in forced continuous operation, pulse-skipping or Burst Mode® operation during light loads. DTCA and DTCB selector provides easy adjustment of the dead time to improve efficiency or to tailor the application. DRVSET and DRVUV selector offers option to choose drive voltage from 4V to 5.5V to optimize performance.
Eigenschaften
- GaN drive technology fully optimized for GaN FETs
- Wide VIN range: 4 V to 100 V
- Wide output voltage range: 0.8 V ≤ VOUT ≤ 60 V
- No catch, clamp, or bootstrap diodes needed
- Internal smart bootstrap switches prevent overcharging of high-side driver supplies
- Internally optimized, smart near zero dead times or resistor adjustable dead times
- Split output gate drivers for adjustable turn on and turn off driver strengths
- Accurate adjustable driver voltage and UVLO
- Low IQ: 5 μA (48 VIN to 5 VOUT, Ch 1 On)
- Programmable frequency (100 kHz to 3 MHz)
- Synchronizable frequency (100 kHz to 3 MHz)
- Spread spectrum frequency modulation
- 40-lead (6 mm × 6 mm), side wettable, QFN package
Typische Anwendungen
- Military avionics
- medical systems
- Industrial power systems
- Telecommunications power systems
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | Tol. C | VR(V (DC)) | Bauform | DF(%) | RISO | Keramiktyp | B(mm) | Fl(mm) | Verpackung | Pins | Typ | Montageart | L(mm) | H(mm) | IR(A) | Arbeitsspannung(V (AC)) | Betriebstemperatur | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 3.3 nF, ±10% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | Kapazität3.3 nF | Kapazität±10% | Nennspannung50 V (DC) | Bauform0603 | Verlustfaktor2.5 % | Isolationswiderstand10 GΩ | KeramiktypX7R Klasse II | Breite0.8 mm | Pad Dimension0.4 mm | Verpackung7" Tape & Reel | – | – | – | Länge1.6 mm | Höhe0.8 mm | – | – | Betriebstemperatur -55 °C up to +125 °C | |||||
 | WR-PHD Kurzschlussbrücken, –, – | Simulation– | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Kurzschlussbrücken | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins2 | – | – | – | – | Nennstrom3 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -25 °C up to +105 °C | |||
 | WR-PHD Stiftleisten, –, – | Simulation– | Downloads7 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins6 | TypGerade | MontageartTHT | Länge6 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C | ||
 | WR-PHD Stiftleisten, –, – | Simulation– | Downloads7 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWR-PHD Stiftleisten | – | – | – | – | – | Isolationswiderstand1000 MΩ | – | – | – | VerpackungBeutel | Pins8 | TypGerade | MontageartTHT | Länge8 mm | – | Nennstrom2 A | Arbeitsspannung200 V (AC) | Betriebstemperatur -40 °C up to +105 °C |