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| Flexible Double-Ended Voltage-Mode PWM Controller |
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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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| ISL6740EVAL1 |
Active |
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Eval Board |
N/A |
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| ISL6740EVAL2 |
Active |
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Eval Board |
N/A |
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| ISL6740EVAL2Z |
Active |
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Eval Board |
N/A |
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| ISL6740EVAL3Z |
Active |
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Eval Board |
N/A |
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| ISL6740IB |
Active |
Ind |
16 Ld SOIC |
1 |
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| ISL6740IB-T |
Active |
Ind |
16 Ld SOIC T+R |
1 |
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| ISL6740IBZ |
Active |
Ind |
16 Ld SOIC |
3 |
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| ISL6740IBZ-T |
Active |
Ind |
16 Ld SOIC T+R |
3 |
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| ISL6740IV |
Active |
Ind |
16 Ld TSSOP |
1 |
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| ISL6740IV-T |
Active |
Ind |
16 Ld TSSOP T+R |
1 |
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| ISL6740IVZ |
Active |
Ind |
16 Ld TSSOP |
1 |
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| ISL6740IVZ-T |
Active |
Ind |
16 Ld TSSOP T+R |
1 |
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| ISL6740EVAL1Z |
Coming
Soon |
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Eval Board |
N/A |
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| ISL6740EVAL3 |
InActive |
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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 ISL6740, ISL6741 family of adjustable frequency, low power, pulse width modulating (PWM) voltage mode (ISL6740) and current mode (ISL6741) controllers is designed for a wide range of power conversion applications using half-bridge, full bridge, and push-pull configurations. These controllers provide an extremely flexible oscillator that allows precise control of frequency, duty cycle, and deadtime.
This advanced BiCMOS design features low operating current, adjustable switching frequency up to 1MHz, adjustable soft start, internal and external over temperature protection, fault annunciation, and a bidirectional SYNC signal that allows the oscillator to be locked to paralleled units or to an external clock for noise sensitive applications. |
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 Key Features |
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Precision Duty Cycle and Deadtime Control
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95ľA Startup Current
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Adjustable Delayed Over Current Shutdown and Re-Start (ISL6740)
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Adjustable Short Circuit Shutdown and Re-Start
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Adjustable Oscillator Frequency Up to 2MHz
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Bidirectional Synchronization
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Inhibit Signal
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Internal Over Temperature Protection
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System Over Temperature Protection Using a Thermistor or Sensor
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Adjustable Soft Start
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Adjustable input Under Voltage Lockout
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Fault Signal
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Tight Tolerance Voltage Reference Over Line, Load, and Temperature
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Pb-free available
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| Related Documentation |
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 Datasheet(s): |
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 Evaluation Board(s): |
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 i-Sim: |
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 Parametric Data |
| | Control Mode | | Voltage Mode | | | UVLO Rising (V) | | 7.25 | | | UVLO Falling (V) | | 6.75 | | | VBIAS (max) (V) | | 20 | | | No-Load Operating Current (mA) | | 5 | | | # of PWM Outputs | | 2 | | | FET Driver IOUT (max) (A) | | .5 | | | Max Duty Cycle (%) | | 100 | |
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 Application Block Diagrams |
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| Applications |
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- Telecom and Datacom Power
- Wireless Base Station Power
- File Server Power
- Industrial Power Systems
- DC Transformers and Buss Regulators
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| | ISL6740A | | Flexible Double-Ended Voltage-Mode PWM Controller with Voltage Feed Forward | | | | ISL6741 | | Flexible Double-Ended Peak-Current-Mode PWM Controller | | | | ISL6742 | | Advanced Double-Ended PWM Controller with Synchronous Rectifier Control and Average Current Limit | | | | 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 | |
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