125V/3A, High-Speed, Half-Bridge MOSFET Drivers

 

Part Number	Replacement	Explanation

Description

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The MAX15018A/MAX15018B/MAX15019A/MAX15019B high-frequency, 125V half-bridge, n-channel MOSFET drivers drive high- and low-side MOSFETs in high-voltage applications. These drivers are independently controlled, and their 35ns (typ) propagation delay, from input to output, are matched to within 2ns (typ). The high-voltage operation with very low and matched propagation delay between drivers, and high source-/sink-current capabilities in a thermally enhanced package make these devices suitable for high-power, high-frequency telecom power converters. The 125V maximum input voltage provides plenty of margin over the 100V input transient requirement of telecom standards. A reliable on-chip bootstrap diode connected between V_DD and BST eliminates the need for an external discrete diode.

The MAX15018A/MAX15019A both offer noninverting drivers. The MAX15018B/MAX15019B offer a noninverting high-side driver and an inverting low-side driver (see the Selector Guide in the full data sheet). The MAX15018_ feature CMOS (V_DD/2) logic inputs. The MAX15019_ feature TTL-logic inputs. The drivers are available in the industry standard 8-pin SO footprint and pin configuration with a thermally enhanced 8-pin SO package. All devices operate over the -40°C to +125°C automotive temperature range.

MAX15018, MAX15019: Typical Operating Circuit Enlarge+

Key Features

• HIP2100IB/HIP2101IB Pin Compatible (MAX15018A/MAX15019A)
• Up to 125V V_IN Operation
• 8V to 12.6V V_DD Input Supply Range
• 3A Peak Source and Sink Current
• 35ns Propagation Delay
• Guaranteed 8ns or Less Propagation Delay Matching Between High- and Low-Side Drivers
• Both Noninverting/Noninverting and Noninverting/Inverting Logic-Input Versions Available
• Up to 15V Logic Inputs, Independent of V_DD Supply Voltage
• Low 8pF Input Capacitance
• Available in CMOS (V_DD/2) or TTL Logic-Level Inputs with Hysteresis
• Available in a Space-Saving, Thermally Enhanced 8-Pin SO-EP Package

Applications/Uses

• Half-Bridge, Full-Bridge, and Two-Switch Forward Converters
• Motor Control
• Power-Supply Modules
• Synchronous Buck DC-to-DC Converters
• Telecom Power Supplies