Datasheet LTC3777 (Analog Devices) - 37
| Manufacturer | Analog Devices |
| Description | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller + Switching Bias Supply |
| Pages / Page | 40 / 37 — APPLICATIONS INFORMATION. Output Switching Bias Supply |
| Revision | A |
| File Format / Size | PDF / 2.8 Mb |
| Document Language | English |
APPLICATIONS INFORMATION. Output Switching Bias Supply
Model Line for this Datasheet
Text Version of Document
LTC3777
APPLICATIONS INFORMATION
V OUT 12V 5A 270µF 25V 110k 3777 F18 8mΩ 22µF 3× 25V
Output Switching Bias Supply
TOPD BOTC M M R1 10mΩ 15µH A 12.1k TOP BOTB 100Ω 100Ω M ×2 M 100Ω 100Ω 4.7µF 220pF 100pF 0.22µF 33nF 3.32k 0.22µF 1k TG1 V FB I TH SW1 BG1 BG2 TG2 SGND PGND SW2 SENSEP SENSEN I AVGSNSN I AVGSNSP V OUTSNS BOOST1 BOOST2 D2 D1 LTC3777 CC IN V CC V IN DRV V INOV V INSNS BV BOV BRUN BSW BVFB BGND EXT RUN PGOOD V5 SS FREQ MODE PLLIN F 1µ 10µF 1.21k 56.2k 10k µF µF F 800k 0.1 1k 0.1 121k V OUT 1µ V IN 2.2µF 100k 150µH 2.5M 5Ω 22µF 6.3V F 1µ 3× 200V VSET , DR OUT SET 3.3V BV 85mA 10µF 125V
Figure 18. 97% Efficient 12V/5A Output Buck-Boost Converter with an Independent Always on 3.3V/ 85mA
: BFBO, BI : BSC360N15NS3 G : BSC190N15NS3 G : BSC050NE2LS : BSC050NE2LS A TOP BOTB TOPD BOTC V IN D1, D2: DFLS1200-7 M M M M PINS NOT USED IN THIS CIRCUIT 6V TO 100V Rev A For more information www.analog.com 37 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS – SWITCHING BIAS SUPPLY PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
APPLICATIONS INFORMATION
V OUT 12V 5A 270µF 25V 110k 3777 F18 8mΩ 22µF 3× 25V
Output Switching Bias Supply
TOPD BOTC M M R1 10mΩ 15µH A 12.1k TOP BOTB 100Ω 100Ω M ×2 M 100Ω 100Ω 4.7µF 220pF 100pF 0.22µF 33nF 3.32k 0.22µF 1k TG1 V FB I TH SW1 BG1 BG2 TG2 SGND PGND SW2 SENSEP SENSEN I AVGSNSN I AVGSNSP V OUTSNS BOOST1 BOOST2 D2 D1 LTC3777 CC IN V CC V IN DRV V INOV V INSNS BV BOV BRUN BSW BVFB BGND EXT RUN PGOOD V5 SS FREQ MODE PLLIN F 1µ 10µF 1.21k 56.2k 10k µF µF F 800k 0.1 1k 0.1 121k V OUT 1µ V IN 2.2µF 100k 150µH 2.5M 5Ω 22µF 6.3V F 1µ 3× 200V VSET , DR OUT SET 3.3V BV 85mA 10µF 125V
Figure 18. 97% Efficient 12V/5A Output Buck-Boost Converter with an Independent Always on 3.3V/ 85mA
: BFBO, BI : BSC360N15NS3 G : BSC190N15NS3 G : BSC050NE2LS : BSC050NE2LS A TOP BOTB TOPD BOTC V IN D1, D2: DFLS1200-7 M M M M PINS NOT USED IN THIS CIRCUIT 6V TO 100V Rev A For more information www.analog.com 37 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS – SWITCHING BIAS SUPPLY PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS