ARD00777 Microchip

MIC45212-1/-2 26V, 14A DC-to-DC Power Module Features General Description No Compensation Required The MIC45212 is a synchronous, step-down regulator module, featuring a unique adaptive ON-time control Up to 14A Output Current architecture. The module incorporates a DC-to-DC con- >93% Peak Efficiency troller, power MOSFETs, bootstrap diode, bootstrap Output Voltage: 0.8V to 0.85*V with IN capacitor and an inductor in a single package, simplifying 1% Accuracy the design and layout process for the end user. Adjustable Switching Frequency from 200 kHz to 600 kHz This highly integrated solution expedites system design and improves product time-to-market. The inter- Enable Input and Open-Drain Power Good Output nal MOSFETs and inductor are optimized to achieve Hyper Speed Control (MIC45212-2) Architecture high efficiency at a low output voltage. The fully opti- enables Fast Transient Response mized design can deliver up to 14A current under a HyperLight Load (MIC45212-1) improves Light wide input voltage range of 4.5V to 26V, without requir- Load Efficiency ing additional cooling. Supports Safe Start-up into Pre-Biased Output The MIC45212-1 uses the HyperLight Load (HLL) while 40C to +125C Junction Temperature Range the MIC45212-2 uses the Hyper Speed Control (HSC) Thermal Shutdown Protection architecture, which enables ultra-fast load transient Short-Circuit Protection with Hiccup mode response, allowing for a reduction of output capaci- Adjustable Current Limit tance. The MIC45212 offers 1% output accuracy that Available in 64-Pin 12 mm x 12 mm x 4 mm QFN can be adjusted from 0.8V to 0.85*V with two external IN Package resistors. Additional features include thermal shutdown protection, input undervoltage lockout, adjustable cur- Applications rent limit and short-circuit protection. The MIC45212 allows for safe start-up into a pre-biased output. High-Power Density Point-of-Load Conversion Servers, Routers, Networking, and Base Stations FPGAs, DSP and Low-Voltage ASIC Power Supplies Industrial and Medical Equipment Typical Application Schematic PV ANODE DD 5V BST DD V RIA V PG IN OUT 12V 0.8V to 0.85 * V /Up to 14A IN PV V IN OUT V MIC45212 IN R FB1 C C OUT FF FB C FREQ IN RIB R FB2 SW ON R LIM EN OFF I LIM PGND GND 2018 Microchip Technology Inc. DS20005607B-page 1MIC45212-1/-2 Package Types MIC45212-1/-2 64-Pin 12 mm x 12 mm x 4 mm QFN (Top View) 64 63 62 61 60 59 58 57 56 55 54 53 52 51 1 50 ANODE GND 49 ANODE 2 BST PV DD 48 RIB 3 PV DD PGND 47 4 RIA I LIM 46 RIA 5 PGND 45 6 KEEPOUT PGND 7 44 SW SW 8 43 SW SW SW 9 42 SW SW SW 10 41 SW 11 40 KEEPOUT SW 39 SW PV 12 IN 38 SW PV 13 IN PV ePAD 37 KEEPOUT 14 PV IN IN 36 15 V PV OUT IN V ePAD OUT 35 V 16 PV OUT IN 34 V PV 17 OUT IN 33 V 18 OUT PV IN 21 23 25 26 27 28 29 30 31 32 19 20 22 24 DS20005607B-page 2 2018 Microchip Technology Inc. PV GND IN PV 5V IN DD PV 5V DD IN PV FREQ IN V KEEPOUT IN EN V OUT PG V OUT FB V OUT GND V OUT NC V OUT BST V OUT BST V OUT V BST OUT KEEPOUT V OUT