NCP1397A/B, NCV1397A/B High Performance Resonant Mode Controller with Integrated High-Voltage Drivers www.onsemi.com The NCP1397 is a high performance controller that can be utilized in half bridge resonant topologies such as series resonant, parallel resonant and LLC resonant converters. It integrates 600 V gate 16 drivers, simplifying layout and reducing external component count. With its unique architecture, including a 500 kHz Voltage Controlled 1 Oscillator whose control mode permits flexibility when an ORing SO16, LESS PIN 13 function is required, the NCP1397 delivers everything needed to build D SUFFIX CASE 751AM a reliable and rugged resonant mode power supply. The NCP1397 provides a suite of protection features with MARKING DIAGRAMS configurable settings to optimize any application. These include: autorecovery or fault latchoff, brownout, open optocoupler, 16 softstart and shortcircuit protection. Deadtime is also adjustable to NCx1397yG overcome shoot through current. AWLYWW Features 1 HighFrequency Operation from 50 kHz up to 500 kHz x = P (standard) or V (automotive) 600 V HighVoltage Floating Driver y = A or B Adjustable Minimum Switching Frequency with 3% Accuracy A = Assembly Location WL = Wafer Lot Adjustable Deadtime from 100 ns to 2 s. Y = Year Startup Sequence Via an Externally Adjustable SoftStart WW = Work Week BrownOut Protection for a Simpler PFC Association G = PbFree Package Latched Input for Severe Fault Conditions, e.g. Over Temperature or OVP PIN CONNECTIONS TimerBased Input with AutoRecovery Operation for Delayed Event Reaction CSS(dis) 1 Vboot 16 Latched Overcurrent Protection Fmax 15 Mupper 2 Disable Input for Immediate Event Reaction or Simple ON/OFF Ctimer HB 3 14 Control Rt 4 V Operation up to 20 V CC BO 5 12 V CC Low Startup Current of 300 A FB 6 11 Mlower 1 A/0.5 A Peak Current Sink/Source Drive Capability DT GND 7 10 Common Collector Optocoupler Connection for Easier ORing Skip/Disable Fault 8 9 Optional Common Emitter Optocoupler Connection (Top View) Internal Temperature Shutdown NCV Prefix for Automotive and Other Applications Requiring ORDERING INFORMATION Unique Site and Control Change Requirements AECQ100 See detailed ordering and shipping information in the package Qualified and PPAP Capable dimensions section on page 26 of this data sheet. These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant Typical Applications Flat Panel Display Power Converters Industrial and Medical Power Sources High Power acdc Adapters for Notebooks Offline Battery Chargers Computing Power Supplies Semiconductor Components Industries, LLC, 2015 1 Publication Order Number: October, 2015 Rev. 6 NCP1397/DNCP1397A/B, NCV1397A/B R18 Figure 1. Typical Application Example PIN FUNCTION DESCRIPTION Pin Pin Name Function Pin Description 1 CSS(dis) SoftStart Discharge Softstart capacitor discharge pin. Connect to the softstart capacitor to reset it before startup or during overload conditions. 2 Fmax Maximum frequency clamp A resistor sets the maximum frequency excursion 3 Ctimer Timer duration Sets the timer duration in presence of a fault 4 Rt Minimum frequency clamp Connecting a resistor to this pin, sets the minimum oscillator frequency reached for V = 1 V. FB 5 BO BrownOut Detects low input voltage conditions. When brought above V (4 V typically), it latch fully latches off the controller. 6 FB Feedback Injecting current into this pin increases the oscillation frequency up to Fmax. 7 DT Deadtime A simple resistor adjusts the deadtime width 8 Skip/Disable Skip or Disable input Upon release, a clean startup sequence occurs if V < 0.3 V. During the skip FB mode, when FB doesnt drop below 0.3 V, the IC restarts without softstart sequence. 9 Fault Fault detection input When asserted, the external timer starts to countdown and shuts down the controller at the end of its time duration. Simultaneously the SoftStart discharge switch is activated so the converter operating frequency goes up to protect application power stage. This input features also second fault comparator with higher threshold (1.5 V typically) that: A) Speeds up the timer capacitor charging current 8 times NCP1397A B) latches off the IC permanently NCP1397B In both versions the second fault comparator helps to protect application in case of short circuit on the output or transformer secondary winding. 10 GND Analog ground 11 Mlower Low side output Drives the lower side MOSFET 12 V Supplies the controller The controller accepts up to 20 V CC 13 NC Not connected Increases the creepage distance 14 HB Halfbridge connection Connects to the halfbridge output 15 Mupper High side output Drives the higher side MOSFET 16 Vboot Bootstrap pin The floating V supply for the upper stage CC www.onsemi.com 2