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| Advanced Double-Ended PWM Controller with Synchronous Rectifier Control and Average Current Limit |
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Available in RoHS/Pb-Free
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 Buy direct from Intersil
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 Check distributor inventory
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 Request samples
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL6742AAZA |
Active |
Ind |
16 Ld QSOP |
2 |
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| ISL6742AAZA-T |
Active |
Ind |
16 Ld QSOP T+R |
2 |
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| ISL6742EVAL2Z |
Coming
Soon |
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Eval Board |
N/A |
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| The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice. |
| MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020 |
| SMD = Standard Microcircuit Drawing |
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 Description |
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The ISL6742 is a high-performance double-ended PWM controller with advanced synchronous rectifier control and current limit features. It is suitable for both current- and voltage-mode control methods.
The ISL6742 includes complemented PWM outputs for synchronous rectifier (SR) control. The complemented outputs may be dynamically advanced or delayed relative to the main outputs using an external control voltage.
Its advanced current sensing circuitry employs sample and hold methods to provide a precise average current signal. Suitable for average current limiting, a technique which virtually eliminates the current tail-out common to peak current limiting methods, it is also applicable to current sharing circuits and average current mode control.
This advanced BiCMOS design features an adjustable oscillator frequency up to 2MHz, internal over-temperature protection, precision deadtime control, and short propagation delays. Additionally, Multi-Pulse Suppression ensures alternating output pulses at low duty cycles where pulse skipping may occur. |
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 Key Features |
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Synchronous Rectifier Control Outputs with Adjustable Delay/Advance
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Adjustable Average Current Signal
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3% Tolerance Cycle-by-Cycle Peak Current Limit
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Fast Current Sense to Output Delay
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Adjustable Oscillator Frequency Up to 2MHz
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Adjustable Deadtime Control
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Voltage- or Current-Mode Operation
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Separate RAMP and CS Inputs for Voltage Feed-Forward or Current-Mode Applications
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Tight Tolerance Error Amplifier Reference Over Line, Load, and Temperature
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175μA Start-up Current
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Supply UVLO
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Adjustable Soft-Start
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70ns Leading Edge Blanking
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Multi-Pulse Suppression
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Internal Over-Temperature Protection
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Pb-Free (RoHS Compliant)
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| Related Documentation |
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 Datasheet(s): |
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 i-Sim: |
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 Parametric Data |
| | Control Mode | | Voltage, Peak Current, or Average Current Mode | | | UVLO Rising (V) | | 8.75 | | | UVLO Falling (V) | | 7 | | | VBIAS (max) (V) | | 20 | | | No-Load Operating Current (mA) | | 5 | | | # of PWM Outputs | | 4 | | | FET Driver IOUT (max) (A) | | .1 | | | Max Duty Cycle (%) | | 100 | |
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 Application Block Diagrams |
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| Applications |
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- Half-Bridge, Full-Bridge, Interleaved Forward, and Push-Pull Converters
- Telecom and Datacom Power
- Wireless Base Station Power
- File Server Power
- Industrial Power Systems
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| | ISL6740 | | Flexible Double-Ended Voltage-Mode PWM Controller | | | | ISL6740A | | Flexible Double-Ended Voltage-Mode PWM Controller with Voltage Feed Forward | | | | ISL6741 | | Flexible Double-Ended Peak-Current-Mode PWM Controller | | | | ISL6744 | | Intermediate Bus Double-Ended PWM Controller with Precision Dead-Time Adjustment | | | | ISL6744A | | Intermediate Bus PWM Controller | | | | ISL6745 | | Voltage-Mode Double-Ended PWM Controller with Precision Dead-Time Adjustment | | | | ISL6745A | | Improved Bridge Controller with Precision Dead Time Control | | | | ISL6752 | | ZVS Full-Bridge Current-Mode PWM with Adjustable Synchronous Rectifier Control | | | | ISL6753 | | ZVS Full-Bridge PWM Controller | |
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