Datasheet LT8580 (Analog Devices) - 27
| Hersteller | Analog Devices |
| Beschreibung | Boost/SEPIC/Inverting DC/DC Converter with 1A, 65V Switch, Soft-Start and Synchronization |
| Seiten / Seite | 32 / 27 — TYPICAL APPLICATIONS. VFD (Vacuum Fluorescent Display) Power Supply … |
| Revision | B |
| Dateiformat / Größe | PDF / 1.4 Mb |
| Dokumentensprache | Englisch |
TYPICAL APPLICATIONS. VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz
Modelllinie für dieses Datenblatt
Textversion des Dokuments
LT8580
TYPICAL APPLICATIONS VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz Danger High Voltage! Operation by High Voltage Trained Personnel Only
D5 VOUT3 180V C5 D4 20mA* 22Ω 1µF C4 D3 1µF VOUT2 120V C3 D2 30mA* 22Ω 1µF L1 C2 68µH 1µF D1 VOUT1 VIN 60V 9V TO 16V 60mA* 487k VIN SW 698k SHDN FBX CIN C1 LT8580 1µF 1µF SYNC VC 22.1k RT GND SS 330pF 84.5k 0.47µF 4.7nF 8580 TA05a *MAX TOTAL OUTPUT POWER 3.5W L1: WÜRTH 68µH WE-LQS 74404084680 D1-D5: DIODES, INC. DFLS1100 CIN: 1µF, 100V, 1206, X7R C1-C5: 1µF, 100V, 1206, X7S
Efficiency and Power Loss (VIN = 12V with Load on VOUT3)
90 960
Start-Up Waveforms
80 880 VOUT3 50V/DIV POWER LOSS (mW) 70 800 VOUT2 50V/DIV V 60 720 OUT1 50V/DIV 50 640 EFFICIENCY (%) I 40 560 L1 200mA/DIV 30 EFFICIENCY 480 POWER LOSS 2ms/DIV 8580 TA05c 20 400 0 0.5 1 1.5 2 2.5 3 3.5 OUTPUT POWER (W) 8580 TA05b Rev. B For more information www.analog.com 27 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL APPLICATIONS VFD (Vacuum Fluorescent Display) Power Supply Switches at 1MHz Danger High Voltage! Operation by High Voltage Trained Personnel Only
D5 VOUT3 180V C5 D4 20mA* 22Ω 1µF C4 D3 1µF VOUT2 120V C3 D2 30mA* 22Ω 1µF L1 C2 68µH 1µF D1 VOUT1 VIN 60V 9V TO 16V 60mA* 487k VIN SW 698k SHDN FBX CIN C1 LT8580 1µF 1µF SYNC VC 22.1k RT GND SS 330pF 84.5k 0.47µF 4.7nF 8580 TA05a *MAX TOTAL OUTPUT POWER 3.5W L1: WÜRTH 68µH WE-LQS 74404084680 D1-D5: DIODES, INC. DFLS1100 CIN: 1µF, 100V, 1206, X7R C1-C5: 1µF, 100V, 1206, X7S
Efficiency and Power Loss (VIN = 12V with Load on VOUT3)
90 960
Start-Up Waveforms
80 880 VOUT3 50V/DIV POWER LOSS (mW) 70 800 VOUT2 50V/DIV V 60 720 OUT1 50V/DIV 50 640 EFFICIENCY (%) I 40 560 L1 200mA/DIV 30 EFFICIENCY 480 POWER LOSS 2ms/DIV 8580 TA05c 20 400 0 0.5 1 1.5 2 2.5 3 3.5 OUTPUT POWER (W) 8580 TA05b Rev. B For more information www.analog.com 27 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts