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| Improved Bridge Controller with Precision Dead Time Control |
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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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| ISL6745AAUZ |
Active |
Automotive |
10 Ld MSOP |
2 |
1.87 |
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| ISL6745AAUZ-T |
Active |
Automotive |
10 Ld MSOP T+R |
2 |
1.91 |
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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 ISL6745A is a low-cost double-ended voltage-mode PWM controller designed for half-bridge and full-bridge power supplies and line-regulated bus converters. It provides precise control of switching frequency, adjustable soft-start, and overcurrent shutdown. In addition, the ISL6745A allows for accurate adjustment of MOSFET non-overlap time (“deadtime”) with deadtimes as low as 35ns, allowing power engineers to optimize the efficiency of open-loop bus converters. The ISL6745A also includes a control voltage input for closed-loop PWM and line voltage feed-forward functions. The ISL6745A is identical to the ISL6745, but is optimized for higher noise environments.
Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745A is available in a space-saving MSOP-10 package and is guaranteed to meet rated specifications over a wide -40°C to +105°C temperature range. |
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 Key Features |
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Precision Duty Cycle and Deadtime Control
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100μA Start-up Current
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Adjustable Delayed Overcurrent Shutdown and Re-Start
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Adjustable Oscillator Frequency Up to 2MHz
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1A MOSFET Gate Drivers
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Adjustable Soft-Start
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Internal Over-Temperature Protection
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35ns Control to Output Propagation Delay
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Small Size and Minimal External Component Count
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Input Undervoltage 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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 Evaluation Board(s): |
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 Parametric Data |
| | Control Mode | | Voltage Mode | | | UVLO Rising (V) | | 6.3 | | | UVLO Falling (V) | | 5.7 | | | VBIAS (max) (V) | | 20 | | | No-Load Operating Current (mA) | | 3 | | | # of PWM Outputs | | 2 | | | FET Driver IOUT (max) (A) | | 1 | | | Max Duty Cycle (%) | | 100 | |
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| Applications |
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- Half-bridge Converters
- Full-bridge Converters
- Line-regulated Bus Converters
- AC/DC Power Supplies
- Telecom, Datacom, and File Server Power
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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 | | | | 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 | | | | ISL6752 | | ZVS Full-Bridge Current-Mode PWM with Adjustable Synchronous Rectifier Control | | | | ISL6753 | | ZVS Full-Bridge PWM Controller | |
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