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High-power LED drivers require no external switches - 19-Jul-07
Issue of EDN Suiting a variety of applications, these circuits
transform a switching regulator into a current source for driving power
LEDs..... [Design Idea by Alfredo H Saab and Steve Logan, Maxim Integrated
Products, Sunnyvale, CA]
High-side driver feeds IGBTs and MOSFETs - 11/23/00 EDN-Design Ideas The
low- to moderate-power system in Figure 1 provides the interface between a pulse-width
modulator and a high-side IGBT (insulated-gatebipolar-transistor) or MOSFET switch.
You can use it to interface TTL or CMOS circuitry to an H-bridge..... [Design idea by
Carlisle Dolland, Honeywell Engines and Systems, Torrance, CA]
High-side driver has fault protection - 5-Sep-02 Issue of EDN
High-side drivers find common use in driving grounded solenoid coils and other loads.
Short-circuit protection for such drivers is essential for avoiding damage from wiring
faults and other causes. Polymer fuses are generally too slow, and discrete
current-limiting circuits are large and cumbersome. The circuit in Figure 1 uses a
small, low-dropout linear regulator as a high-side switch and p..... [Design Idea by
Carl Spearow, Tokyo Electron, Gilbert, AZ]
High-Voltage amplifier drives piezo tubes - 7-Dec-04 Issue of EDN
Piezoelectric tubular positioners that drive manipulators in scanning tunneling
microscopes require high-voltage, low-current drive circuits. The circuit in Figure 1
can drive high-resistance, low-capacitance piezoelectric loads at a -3-dB bandwidth of
6 kHz. It offers a low-cost alternative to commercial drivers..... [Design Idea by
Bipin Duggal, Netaji Subhas Institute of Technology, New Delhi, India]
