The TL1454 is a dual-channel pulse-width-modu- GND 7 OUT1 8 10 VCC 9 OUT2 lation (PWM) control circuit, primarily intended for low-power, dc/dc converters. Applications include LCD displays, backlight inverters, notebook com- puters, and other products requiring small, high-frequency, dc/dc converters. Each PWM channel has its own error amplifier, PWM.
short-circuit protection are common to both channels. Channel 1 is configured to drive n-channel MOSFETs in step-up or flyback converters, and channel 2 is configured to drive p-channel MOSFETs in step-down or inverting converters. The operating frequency is set with an external resistor and an external capacitor, and dead time is continuously adjustable from 0 to 100% duty cycle with a resistive divider network. Soft start can be implemented by adding a capacitor to the dead-time control (DTC) network. The error-amplifier common-mode input range includes ground, which allows the TL1454 to b.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TL1454 |
Texas Instruments |
Dual-Channel PWM Controller | |
2 | TL145406 |
Texas Instruments |
Triple RS-232 Drivers/Receivers | |
3 | TL1454A |
Texas Instruments |
Dual-Channel PWM Controller | |
4 | TL1454AY |
Texas Instruments |
Dual-Channel PWM Controller | |
5 | TL1451 |
Unisonic Technologies |
DUAL PULSE-WIDTH-MODULATION CONTROLLER | |
6 | TL1451A |
Texas Instruments |
Dual PWM Controller | |
7 | TL1451A-EP |
Texas Instruments |
Dual PWM Controller | |
8 | TL1451A-Q1 |
Texas Instruments |
Dual PWM Controller | |
9 | TL1453C |
Texas Instruments |
Dual PWM Controller | |
10 | TL142 |
INCHANGE |
NPN Transistor | |
11 | TL1431 |
Texas Instruments |
Precision Programmable Reference | |
12 | TL1431 |
STMicroelectronics |
Adjustable voltage reference |