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ADPL74101 Datasheet(PDF) 1 Page - Analog Devices |
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ADPL74101 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 49 page  Data Sheet ADPL74101 100V Synchronous Step-Down Controller with Internal Bootstrap Switch Rev. 0 DOCUMENT FEEDBACK One Analog Wa y, Wilmington, MA 01887 - 2356, U.S.A. T el: 781.329.4700 TECHNICAL SUPPORT © 202 5 Analog Devices, Inc. All rights reserved. FEATURES Wide VIN Range: 4V to 100V Wide output voltage range: 0.8V ≤ VOUT ≤ 60V Internal Bootstrap Switch for the High-Side Gate Driver Stage Accurate Adjustable Driver Voltage with UVLO Protection Selectable Continuous, Pulse-Skipping, or Burst Mode Operation at Light Loads Programmable Output Voltage with VPRG Pin (5V or 12V) Current Limit Foldback during Short Fault Low Operating IQ: 5μA (48VIN to 5VOUT) Programmable Frequency (100kHz to 1MHz) Synchronizable Frequency (100kHz to 1MHz) Spread Spectrum Frequency Modulation 28-Lead (4mm × 5mm), QFN Package APPLICATIONS Industrial Power Systems Military Avionics and Medical Systems Telecommunications Power Systems GENERAL DESCRIPTION The ADPL®74101 is a high-performance step-down DC-to-DC controller that drives all N-channel synchronous metal-oxide-semiconductor field-effect transistor (MOSFET) power stages from input voltages up to 100V. The ADPL74101 features an adjustable gate-drive voltage from 4V to 5.5V, ideal for driving logic-level MOSFETs. The internal smart bootstrap switch avoids the need for an external diode. The very low no-load quiescent current extends operating runtime in battery-powered systems. The MODE pin selects among Burst Mode operation, pulse-skipping mode, or continuous inductor current mode at light loads. The ADPL74101 additionally features spread spectrum operation, which significantly reduces the peak radiated and conducted noise on both the input and output supplies, making it easier to comply with electromagnetic interference (EMI) standards. TYPICAL APPLICATION Figure 1. High Efficiency, 12V Output Buck Regulator Figure 2. Efficiency for Figure 1 MTOP MBOT 5.5µH 10µF ×2 47µF ×2 150µF ×1 4.7nF 100pF 4.7µF 0.1µF 22µF ×2 1nF 0.1µF 7.68kΩ 3mΩ 20Ω 124kΩ 0.1µF 100Ω 2Ω RUN VIN ADPL74101 TG BOOST SW BG SENSE+ SENSE– EXTVCC VFB GND DRVCC INTVCC DRVSET VPRG MODE DRVUV FREQ TRACK/SS ITH ILIM PGOOD PLLIN/SPREAD VIN 16V TO 72V VOUT 12V 15A BURST MODE VIN = 48V VOUT = 12V LOAD CURRENT (mA) 0.01 0.1 1 10 20 80 85 90 95 100 |
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