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Details, datasheet, quote on part number:NCP1216
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| Part: | NCP1216 |
| Category: | Power Management => PWM Controllers |
| Description: | PWM Current-mode Controller For High-power Universal Off-line Supplies <<<>>>Housed in a SO−8 or DIP7 Package, The NCP1216 Represents An<<<>>>enhanced Version of NCP1200−based Controllers. Due to Its High Drive<<<>>>capability, NCP1216 Drives Large Gate−charge MOSFETs, Which<<<>>>together With Internal RAMp Compensation And Built−in Frequency<<<>>>jittering, Ease The Design of Modern Ac/dc Adapters.<<<>>>with an Internal Structure Operating at Different Fixed Frequencies,<<<>>>the Controller Supplies Itself From The High−voltage Rail, Avoiding The<<<>>>need of an Auxiliary Winding. This Feature Naturally Eases The Designer<<<>>>task in Some Particular Applications, E.g. Battery Chargers or TV Sets.<<<>>>Current−mode Control Also Provides an Excellent Input<<<>>>audio−susceptibility And Inherent Pulse−by−pulse Control. Internal<<<>>>ramp Compensation Easily Prevents Sub−harmonic Oscillations From<<<>>>taking Place in Continuous Conduction Mode Designs. |
| Company: | ON Semiconductor |
| Datasheet: | Download NCP1216 datasheet File size : 155 kB |
| Request For quote: | Find where to buy NCP1216
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Datasheet text preview:
NCP1216 PWM Current-Mode Controller for High-Power Universal Off-line Supplies
Housed in a SO-8 or DIP7 package, the NCP1216 represents an enhanced version of NCP1200-based controllers. Due to its high drive capability, NCP1216 drives large gate-charge MOSFETs, which together with internal ramp compensation and built-in frequency jittering, ease the design of modern AC/DC adapters. With an internal structure operating at different fixed frequencies, the controller supplies itself from the high-voltage rail, avoiding the need of an auxiliary winding. This feature naturally eases the designer task in some particular applications, e.g. battery chargers or TV sets. C u r r e n t -m o d e control also provides an excellent input audio-susceptibility and inherent pulse-by-pulse control. Internal ramp compensation easily prevents sub-harmonic oscillations from taking place in continuous conduction mode designs. When the current setpoint falls below a given value, e.g. the output power demand diminishes, the IC automatically enters the so-called skip cycle mode and provides excellent efficiency at light loads. Because this occurs at a user adjustable low peak current, no acoustic noise takes place. The NCP1216 features an efficient protective circuitry, which in presence of an over current condition disables the output pulses while the device enters a safe burst mode, trying to re-start. Once the default has gone, the device auto-recovers.
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MINIATURE PWM CONTROLLER FOR HIGH POWER AC/DC WALL ADAPTERS AND OFFLINE BATTERY CHARGERS
MARKING DIAGRAMS
8 SO-8 D SUFFIX CASE 751 1 16Dyy ALYW
PDIP-7 P SUFFIX CASE 626B 1
P1216Pxxx AWL YYWW
ท ท ท ท ท ท ท ท ท ท ท ท ท ท ท ท
No Auxiliary Winding Operation Current-Mode Control with Adjustable Skip-Cycle Capability Internal Ramp Compensation Built-In Frequency Jittering for Better EMI Signature Auto-Recovery Internal Output Short-Circuit Protection Extremely Low No-Load Stand-By Power 500 mA Peak Current Capability Fixed Frequency Versions at 65 kHz, 100 kHz, 133 kHz Internal Temperature Shutdown Direct Optocoupler Connection SPICE Models Available for TRANsient and AC Analysis Pin-to-Pin Compatible with NCP1200 Series
xxx yy
= Specific Device Code: 065, 100 or 133 = Specific Device Code (06 for 65, 10 for 100, 13 for 133) A = Assembly Location WL, L = Wafer Lot YY, Y = Year WW, W = Work Week
PIN CONNECTIONS
Adj 1 FB 2 CS 3 Gnd 4 8 HV 7 NC 6 VCC 5 Drv
Typical Applications
High Power AC/DC Converters for TVs, Set-Top Boxes, etc. Offline Adapters for Notebooks Telecom DC-DC Converters All Power Supplies
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 15 of this data sheet.
ฉ Semiconductor Components Industries, LLC, 2004
1
February, 2004 - Rev. 5
Publication Order Number: NCP1216/D
NCP1216
+ *See Application Section NCP1216 + EMI Filter
= 35kHz 1 Fosc Adj HV 8 2 FB 7
3 4
CS Vcc 6 GNDDrv 5 Rc o m p
Universal Input + Rs e n s e
Figure 1. Typical Application Example
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PIN FUNCTION DESCRIPTION
Pin No. 1 Pin Name Adj Function Pin Description Adjust the Skipping Peak Current This pin lets you adjust the level at which the cycle skipping process takes place. Shorting this pin to ground, permanently disables the skip cycle feature. 2 3 FB CS Sets the Peak Current Setpoint Current Sense Input By connecting an Optocoupler to this pin, the peak current setpoint is adjusted accordingly to the output power demand. This pin senses the primary current and routes it to the internal comparator via an L.E.B. By inserting a resistor in series with the pin, you control the amount of ramp compensation you need. - The driver's output to an external MOSFET. This pin is connected to an external bulk capacitor of typically 22 mF. This un-connected pin ensures adequate creepage distance. Connected to the high-voltage rail, this pin injects a constant current into the VCC bulk capacitor. 4 5 6 7 8 GND Drv VCC NC HV IC Ground Driving Pulses Supplies the IC - Generates the VCC from the Line
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NCP1216
Adj
1
HV Current Source 96 k 1.1 V Skip Cycle Comparator Internal VCC + - Clock Jittering
8 HV
FB
2
UVLO High and Low Internal Regulator
7 NC
25 k
Current 3 Sense
220 ns L.E.B 19 k 20 k Ramp Compensation
65 kHz 100 kHz 133kHz + - 1V
Set Q Flip-Flop Q DCmax = 75% Reset $500 mA
6 VCC
GND
4
5 Drv
Pull-up Resistor 57 k + Vref 25 k - 5V
Overload? Fault Duration
. .
Figure 2. Internal Circuit Architecture
MAXIMUM RATINGS
Rating Power Supply Voltage, VCC Pin Maximum Voltage on Low Power Pins (except Pin 8 and Pin 6) Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Decoupled to Ground with 10 mF Maximum Voltage on Pin 8 (HV), Pin 6 (VCC) Grounded Minimum Operating Voltage on Pin 8 (HV) Maximum Current into all Pins except VCC (Pin 6) and HV (Pin 8) when 10 V ESD Diodes are Activated Thermal Resistance Junction-to-Air, PDIP7 Version Thermal Resistance Junction-to-Air, SO-8 Version Maximum Junction Temperature Temperature Shutdown Hysteresis in Shutdown Storage Temperature Range ESD Capability, HBM Model (All Pins except VCC and HV) ESD Capability, Machine Model RqJ-A RqJ-A TJMAX TSD Symbol VCC Value 16 -0.3 to 10 500 450 30 5.0 100 178 150 155 30 -60 to +150 2.0 200 Unit V V V V V mA ฐC/W ฐC ฐC ฐC ฐC kV V
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