Current-Mode PWM Controller for Off-line Power Supplies NCP12510 The NCP12510 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a www.onsemi.com tiny TSOP6 package. With a voltage supply range up to 35 V, the controller hosts a jittered 65kHz or 100 kHz switching circuitry operated in peak current mode control. When the power on the MARKING DIAGRAM secondary side starts decreasing, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz. As TSOP6 the power further goes down, the part enters skip cycle while limiting (SOT236) 5DxAYW the peak current. SN SUFFIX Over Power Protection (OPP) is a difficult exercise especially when CASE 318G 1 1 STYLE 13 noload standby requirements drive the converter specifications. The ON Semiconductor proprietary integrated OPP allows harness the 5Dx = Specific Device Code maximum delivered power without affecting the standby performance x = A, 2, C, D, J, or K A = Assembly Location simply via two external resistors. An Over Voltage Protection (OVP) Y = Year input is also combined on the same pin and protects the whole circuitry W = Work Week in case of optocoupler destruction or adverse open loop operation. = PbFree Package Finally, a timerbased shortcircuit protection offers the best (Note: Microdot may be in either location) protection scheme, allowing precisely select the protection trip point without caring of a loose coupling between the auxiliary and the power windings. PIN CONNECTIONS NCP12510 is improved and pin compatible controller based on very popular flyback controller NCP1250. 1 GND 6 DRV Features 2 5 FB V CC FixedFrequency 65 kHz or 100 kHz CurrentMode Control Operation OPP/Latch 3 4 CS Frequency Foldback Down to 26 kHz and SkipCycle in Light Load (Top View) Conditions Frequency Jittering in Normal and Frequency Foldback Modes Internal and Adjustable Over Power Protection (OPP) Circuit ORDERING INFORMATION AutoRecovery Over Voltage Protection (OVP) on the VCC Pin See detailed ordering, marking and shipping information on page 2 of this data sheet. Internal and Adjustable Slope Compensation Internal Fixed 4 ms SoftStart AutoRecovery or Latched ShortCircuit Protection EPS 2.0 Compliant PreShort Ready for Latched OCP Version This is a PbFree Device OVP/OTP Latch Input for Improved Robustness Typical Applications +300 mA/ 500 mA Source/Sink Drive Capability Acdc Converters for TVs, Settop Boxes and DVD Improved Consumption Players Improved Reset Time in Latch State Offline Adapters for Notebooks and Netbooks High Robustness and High ESD Capabilities Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: February, 2021 Rev. 6 NCP12510/DNCP12510 Figure 1. Typical Application Example Table 1. PIN DESCRIPTION Pin No Pin Name Function Pin Description 1 GND The controller ground. 2 FB Feedback pin Hooking an optocoupler collector to this pin will allow regulation. 3 OPP/Latch Adjust the Over Power A resistive divider from the auxiliary winding to this pin sets the OPP Protection Latches off the part compensation level during the ontime. When the voltage exceeds a certain level at turn off, the part is fully latched off. 4 CS Current sense + slope This pin monitors the primary peak current but also offers a means to compensation introduce slope compensation. 5 V Supplies the controller This pin is connected to an external auxiliary voltage. When the V exceeds a CC CC protects the IC certain level, the part enters an autorecovery hiccup. 6 DRV Driver output The driver output to an external MOSFET gate. Table 2. DEVICE OPTIONS AND ORDERING INFORMATION Package OVP/OTP Switching Marking protection Frequency Controller (Note 1) OCP protection V Package Shipping OVP NCP12510ASN65T1G 5DA Latched Latched 65 kHz 25.5 V w/o Preshort NCP12510BSN65T1G 5D2 Autorecovery Latched 65 kHz 25.5 V 3000 / NCP12510CSN65T1G 5DC Autorecovery Autorecovery 65 kHz 25.5 V TSOP6 Tape & (PbFree) NCP12510DSN65T1G 5DD Autorecovery Latched 65 kHz 32 V Reel NCP12510ASN100T1G 5DJ Latched Latched 100 kHz 25.5 V w/o Preshort NCP12510BSN100T1G 5DK Autorecovery Latched 100 kHz 25.5 V For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. 1. Other options available upon customer request. www.onsemi.com 2