This NCL30051 PFC/Half-Bridge Combo Controller is designed to provide a constant voltage to a step-down DC-DC converter/LED driver (ON Semiconductor’s NCL30160). (View the NCL30160 Constant-Current Buck Regulator) ON Semiconductor’s NCL30051 PFC/Half-Bridge Combo Controller contains a critical conduction mode (CrM) power factor correction (PFC) boost controller and a half-bridge resonant controller with a built-in 600 V driver. The half-bridge stage of the NCL30051 PFC/Half-Bridge Combo Controller operates at a fixed frequency, greatly simplifying the control implementations.
Features Voltage Mode CrM Power Factor Correction Controller
PFC Open Feedback Loop Protection
PFC Undervoltage Detector
PFC Overvoltage Detector
Half−Bridge Stage with 600 V High Side Gate Drive
State Machine Ensures Proper Turn−on and Turn−off of Half−Bridge Stage
Controllers are Properly Sequenced for Fault Free Operation
Non−Latching Fault Management
Internal 600 V Startup Circuit
Wide Temperature Range of −40°C to +125°C
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