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Tiny Charge Pump Provides Highly Reliable Low Cost Solution to Negative Reference
Voltage: Maxim Application Note #348 (app note added 7/03) |
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Trading Performance for Cost in Portable Power Supplies: Maxim Application
Note #269 (app note added 7/03) |
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Transformer Design Consideration for off-line Flyback Converters Using Fairchild Power
Switch (FPStm) / AN-4140: Fairchild Application Notes / (app note added
6/06) |
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Triple Capacitive Voltage Inverter with the Max871: Maxim Application Note
#1875 (app note added 7/03) |
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Tripler Converts 5 to 15V: 08/17/00 EDN-Design Ideas / (added 1/06)
By configuring a charge-pump voltage doubler as a tripler, you can readily derive 15V
from 5V (Figure 1). A 15V rail is useful for powering op amps, LCD-bias circuits and
other low-current applications. The connections shown configure the IC1 voltage
doubler as a tripler. The no-load output voltage of the circuit is approximately
3VIN–2VD, where VD is the voltage drop across one diode. Use Schottky diodes as shown
to minimize VD and its effect on output voltage. Because the circuit's finite output
impedance causes the output voltage to drop with load current (Figure 2), a practical
limit for load current is approximately 30 mA. (DI #2570)... |
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Tripler Converts 5 Volt to 15V: Maxim Application Note #297 (app note added
7/03) By configuring a charge-pump voltage doubler as a tripler, you can readily
derive 15V from 5V (Figure 1). A 15V rail is useful for powering op amps, LCD-bias
circuits, and other low-current applications. The connections shown configure the IC1
voltage doubler as a tripler. The no-load output voltage of the circuit is
approximately 3VIN -2VD, where VD is the voltage drop across one diode. Use Schottky
diodes as shown to minimize VD and its effect on output voltage. Because the circuit's
finite output impedance causes the output voltage to drop with load current (Figure
2), a practical limit for load current is approximately 30mA. |
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Two Channel Gate Driver for Large IGBT Modules: The BG2A is a fully isolated
two channel gate drive circuit designed for use with dual IGBT modules. The BG2A
utilizes Powerex VLA500-01 or VLA502-01 hybrid gate drivers to provide efficient
switching of modules rated up to 1400A. The hybrid gate driver features a built-in
high speed opto-coupler, short circuit protection and an isolated DC to DC converter
with 2500VRMS isolation. (added 3/05) |
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Two Watt Switching Power Supply: from 6V to14V (added 4/02) |
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UCC3809 Evaluation Module: The UCC3809EVM evaluation module is an isolated
10-W, 3.3-V converter designed for telecom input voltages, nominally -48 Vdc, but
ranging from -32 Vdc to -75 Vdc. The UCC3809 economy primary-side controller is used
as the pulse-width modulator (PWM), combined with a TLV431 low-voltage
adjustable-precision shunt regulator on the secondary side. The nominal switching
frequency for this converter is approximately 400 kHz. The UCC3809 is configured with
a 50% duty-cycle clamp. (added 3/05) |
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Universal High Resistance Voltmeter: (electronic Circuit / Schematic added
10/04) |
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Use a 555 Timer as a Switch Mode Power Supply: 11/14/02 EDN Design Ideas
/ (added 1/05) Most switch-mode power supplies rely on a PWM
(pulse-width-modulated) output that is controlled via voltage feedback. A 555-timer IC
can inexpensively perform PWM. The circuit in Figure 1 shows how to turn a 555 PWM
circuit into an switch-mode power supply with only one simple equation. The design
uses two 555s.... |
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Various Switching Power Supplies: (electronic circuit added 4/05) |
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Voltage Converter: (electronic circuit added 4/05) |
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Voltage doubler (recconsworld): (electronic circuit added 4/05) |
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Voltage Doubler Design and Analysis: National Semiconductor Application Note
(app note added 2/06) |
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Voltage Inverter : simple low power design based on555 (added 4/02) |
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Voltage Inverter IC Forms High Efficiency Rail Splitter: Maxim Application
Note #218 (app note added 7/03) |
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Voltage Level Translator-23001.0 : Circuit Ideas for Designers Application
Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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Voltage Level Translator-23002.0 : Circuit Ideas for Designers Application
Notes Advanced Linear Devices, Inc. (app note added 6/06) |
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Wide-range regulator delivers 12V, 3A output from 16 to 100V source: 6/23/05
EDN Design Ideas / (added 10/06) Buck regulator tackles high input
voltages. |
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Wide-range voltage regulator automatically selects operating mode: 6/9/05
EDN Design Ideas / (added 10/06) Regulator seamlessly adapts to wide
output range. |
