June/July 2021

34 APEC 2021 www.apec-conf.org Issue 3 2021 Power Electronics Europe www.power-mag.com cycle current sharing. The average current sharing ensures even thermal distribution, while the fast current sharing in each switching cycle prevents inductor saturation due to high peak current during load transients. The current in each power stage and inductor is not only balanced evenly in steady state but also in dynamic load transient conditions at different load frequencies. Figure 2(a) and (b) show IMON current waveforms of the three phases with 300 A load step at load frequencies of 10 kHz and 200 kHz respectively. This wide load-frequency range emulates fast and constant load variations in the CPUs, GPUs, FPGAs, and ASICs. Current waveforms of the three phases demonstrate less than 3 A current mismatch between the two paralleled phases during dynamic load changes in wide frequency range. Literature A 32-phase 1200-Ampere DC/DC Converter for Data Center and Artificial Intelligence Systems, APEC 2021 Procedings, pages 2017-2023 Figure 1: Evaluation board of 32-phase synchronous buck converter Figure 2: I MON , load current, and PWM waveform of 32-phase converter with 300 A load steps at different load frequencies (a) 10 kHz and (b) 200 kHz Name: Company Name: Address: Post Code: Tel: Total Number of Copies @ £ p+p Total £ Drives S & S Hyd H/B Pne H/B Ind Mot Comp H/B H/B Air DFA MEDIA LTD, QUANTITY QUANTITY Hydraulics & Pneumatics There are now 6 of these handy reference books from the publishers of the Drives & Controls and Hydraulics & Pneumatics magazines. Published in an easily readable style and designed to help answer basic questions and everyday problems without the need to refer to weighty textbooks. We believe you’ll find them invaluable items to have within arms reach. From the publishers of QUANTITY QUANTITY QUANTITY If you would like to obtain additional copies of the handbooks, please complete the form below and either fax it on 01732 360034 or post your order to: Cheques should be made payable to DFA MEDIA LTD and crossed A/C Payee. Copies of the handbooks are available at £4.99 per copy. Discounts are available for multiple copies. 2-5 copies £4.30, 6-20 copies £4.10, 20+ copies £3.75. QUANTITY PRACTICAL ENGINEER’S HANDBOOKS HYDRAULICS INDUSTRIAL MOTORS SERVOS AND STEPPERS PNEUMATICS COMPRESSED AIR INDUSTRIAL ELECTRIC DRIVES PLEASE ALLOW UPTO 28 DAYS FOR DELIVERY 192 The High Street, Tonbridge, Kent TN9 1BE Engineers Handbook, DFA MEDIA LTD, 192 The High Street, Tonbridge, Kent TN9 1BE Postage and Packaging: 1-3 copies: £2.99 4-6 copies: £4.99 7 or more copies: £6.99