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ZVS Full-Bridge PWM Controller

Package Information

CAD Model: View CAD Model
Pkg. Type: QSOP
Pkg. Code: MLK
Lead Count (#): 16
Pkg. Dimensions (mm): 4.93 x 3.94 x 1.47
Pitch (mm): 0.64

Environmental & Export Classifications

Moisture Sensitivity Level (MSL) 2
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090
RoHS (ISL6753AAZA) Download

Product Attributes

Pkg. Type QSOP
Lead Count (#) 16
Carrier Type Tube
Moisture Sensitivity Level (MSL) 2
Pb (Lead) Free Yes
Pb Free Category Pb-Free 100% Matte Tin Plate w/Anneal-e3
Temp. Range (°C) -40 to +105°C
Control Mode Voltage, Peak Current, or Average Current Mode
Duty Cycle (%) 99 - 99
FET Driver Output Current (Max) (A) 0.01
Length (mm) 4.9
MOQ 980
No-Load Operating Current 11 mA (typ), 15.5 mA (max)
PWMs (#) 4
Parametric Category Zero Voltage Switching (ZVS) Full Bridge Controllers
Pitch (mm) 0.6
Pkg. Dimensions (mm) 4.9 x 3.9 x 1.47
Qualification Level Standard
Simulation Model Available iSim
Switching Frequency (KHz) 2000 - 2000
Thickness (mm) 1.47
Topology Characteristic Full-Bridge ZVS
Topology [Rail 1] Zero-Voltage-Switching (ZVS)
UVLO Falling (V) 7
UVLO Rising (V) 8.75
VBIAS (Max) (V) 20
Width (mm) 3.9

Description

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.