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| ZVS Full-Bridge PWM Controller |
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| Ordering Information |
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 iBuy direct from Intersil
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 iBuy direct - out of stock
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 Request samples
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 Check distributor inventory
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Available in RoHS/Pb-Free
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Part No. |
Design-In
Status |
Temp. |
Package |
MSL |
Price
US $ |
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| ISL6753AAZA |
Active |
Automotive |
16 Ld QSOP |
2 |
3.19 |
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| ISL6753AAZA-T |
Active |
Automotive |
16 Ld QSOP T+R |
2 |
3.19 |
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| ISL6753EVAL1 |
Coming
Soon |
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Eval Board |
N/A |
Contact Us |
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| ISL6753EVAL2Z |
Coming
Soon |
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Eval Board |
N/A |
Contact Us |
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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 ISL6753 is a high-performance, low-pin-count alternative, zero-voltage switching (ZVS) full-bridge PWM controller. Like the ISL6551, it achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETS are trailing-edge modulated with adjustable resonant switching delays. Compared to the more familiar phase-shifted control method, this algorithm offers equivalent efficiency and improved overcurrent and lightload performance with less complexity in a lower pin count package.
This advanced BiCMOS design features low operating current, adjustable oscillator frequency up to 2MHz, adjustable soft-start, internal over temperature protection, precision deadtime and resonant delay 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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Adjustable Resonant Delay for ZVS Operation
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Voltage- or Current-Mode Operation
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3% Current Limit Threshold
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175μA Startup Current
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Supply UVLO
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Adjustable Deadtime Control
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Adjustable Soft-Start
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Adjustable Oscillator Frequency Up to 2MHz
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Tight Tolerance Error Amplifier Reference Over Line, Load, and Temperature
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5MHz GBWP Error Amplifier
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Adjustable Cycle-by-Cycle Peak Current Limit
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Fast Current Sense to Output Delay
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70ns Leading Edge Blanking
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Multi-Pulse Suppression
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Buffered Oscillator Sawtooth Output
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Internal Over Temperature Protection
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Pb-Free Plus Anneal Available and ELV, WEEE, RoHS Compliant
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| Related Documentation |
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 Application Note(s): |
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 Datasheet(s): |
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 Technical Homepage: |
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 i-Sim: |
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 Parametric Data |
| | Control Mode | | Peak Current Mode or Voltage 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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- ZVS Full-Bridge Converters
- Telecom and Datacom Power
- Wireless Base Station Power
- File Server Power
- Industrial Power Systems
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| | ISL6551 | | ZVS Full Bridge PWM Controller | | | ISL6551IREC | | ZVS Full Bridge PWM Controller | | | ISL6742 | | Advanced Double-Ended PWM Controller with Synchronous Rectifier Control and Average Current Limit | | | 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 | | | ISL6754 | | ZVS Full-Bridge PWM Controller with Adjustable Synchronous Rectifier Control | | | ISL6755 | | ZVS Full-Bridge PWM Controller with Average Current Limit | |
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