ncp1396 ON Semiconductor, ncp1396 Datasheet
ncp1396
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ncp1396 Summary of contents
Page 1
... High Performance Resonant Mode Controller featuring High-Voltage Drivers The NCP1396 A/B offers everything needed to build a reliable and rugged resonant mode power supply. Its unique architecture includes a 500 kHz Voltage Controlled Oscillator whose control mode brings flexibility when an ORing function is a necessity, e.g. in multiple feedback paths implementations ...
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... Slow Fault Slow fault detection 10 Gnd Analog ground 11 Mlower Low side output 12 Vcc Supplies the controller Half-bridge connection 15 Mupper High side output 16 Vboot Bootstrap pin NCP1396A, NCP1396B R8 R24 R20 U5 16 R10 15 C12 R21 11 10 R11 8 9 Slow Input D9 D3 C11 ...
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... If FAULT Itimer else 0 Timer + - + Vref Vdd ISS SS FB RFB + - + Vfb_fault IDT DT Vdd IBO + VBO + Slow - Fault + Vref Fault NCP1396A, NCP1396B Clk 50 Adj. SS Timeout Fault PON Reset Fault + > 0 only Vdd V = V(FB) - Vfb_min + Vfb_min Vref Deadtime Adjustment 20 ms Noise ...
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... This device series contains ESD protection and exceeds the following tests: Human Body Model 2000 V per Mil-Std-883, Method 3015 Machine Model Method 200 V ESD Capability, Machine Model for pin 11 is 180 V. 2. This device meets latch-up tests defined by JEDEC Standard JESD78. NCP1396A, NCP1396B dVBRIDGE/dt and HV) CC http://onsemi.com ...
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... Dead time with from pin 7 to GND DT Maximum dead-time with from pin 7 to GND DT Minimum dead-time from pin 7 to GND DT Leakage current on high voltage pins to GND NCP1396A, NCP1396B = -40°C to +125°C, Max T = 150° Pin Symbol 12 VCC ...
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... The A version does not activate soft-start (unless the feedback pin voltage is below 0.6 V) when the fast-fault is released, this is for skip cycle implementation. The B version does activate the soft-start upon release of the fast-fault input for any feedback conditions. 4. Guaranteed by design NCP1396A, NCP1396B = -40°C to +125°C, Max T = 150°C, V ...
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... TEMPERATURE (°C) Figure 5. Fsw min -40 -25 - TEMPERATURE (°C) Figure 7. Pulldown Resistor (RFB) NCP1396A, NCP1396B 9.60 9.58 9.56 9.54 9.52 9.50 9.48 9.46 9.44 9.42 9.40 9. 110 125 -40 -25 501 500 499 498 497 496 495 494 493 110 125 -40 -25 1 ...
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... TEMPERATURE (°C) Figure 11. T_dead_min 1.970 1.968 1.966 1.964 1.962 1.960 1.958 -40 -25 - TEMPERATURE (°C) Figure 13. T_dead_max NCP1396A, NCP1396B 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3 110 125 -40 -25 296 295 294 293 292 291 290 289 288 287 286 ...
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... TYPICAL CHARACTERISTICS - A VERSION 1.045 1.040 1.035 1.030 1.025 1.020 -40 -25 - TEMPERATURE (°C) Figure 15. Brown-Out Reference (VBO) NCP1396A, NCP1396B 26.8 26.6 26.4 26.2 26.0 25.8 25.6 25.4 25.2 25 110 125 -40 -25 Figure 16. Brown-Out Hysteresis Current (IBO) http://onsemi.com 9 - TEMPERATURE (°C) 110 125 ...
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... TEMPERATURE (°C) Figure 19. Fsw min -40 -25 - TEMPERATURE (°C) Figure 21. Pulldown Resistor (RFB) NCP1396A, NCP1396B 9.56 9.54 9.52 9.50 9.48 9.46 9.44 9.42 9.40 9.38 9. 110 125 -40 -25 502 501 500 499 498 497 496 495 80 95 110 125 -40 -25 1 ...
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... TEMPERATURE (°C) Figure 25. T_dead_min 1.970 1.968 1.966 1.964 1.962 1.960 1.958 -40 -25 - TEMPERATURE (°C) Figure 27. T_dead_max NCP1396A, NCP1396B 8.0 7.5 7.0 6.5 6.0 5.5 5.0 4.5 4.0 3 110 125 -40 -25 294 293 292 291 290 289 288 287 286 285 284 65 ...
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... TYPICAL CHARACTERISTICS - B VERSION 1.050 1.045 1.040 1.035 1.030 1.025 -40 -25 - TEMPERATURE (°C) Figure 29. Brown-Out Reference (VBO) NCP1396A, NCP1396B 107 106 105 104 103 102 101 100 110 125 -40 -25 Figure 30. Brown-Out Hysteresis Current (IBO) http://onsemi.com 12 -10 ...
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... Skip cycle possibility: The absence of soft-start on the NCP1396A fast fault input offers an easy way to implement skip cycle when power saving features are necessary. A simple resistive connection from the feedback pin to the fast fault input, and skip can be implemented. • ...
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... It can happen during the startup sequence, a strong output transient loading short-circuit condition. By installing a resistor from pin 4 to GND, the minimum frequency is set. Using the same philosophy, NCP1396A, NCP1396B Voltage-Controlled Oscillator The VCO section features a high-speed circuitry allowing operation from 100 kHz MHz. However, ...
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... F Mu&Lu No variations Fmax Fmin Fault DVFB = 4.1 V 5.3 V 1.2 V area 0.6 V Figure 33. Maximal Default Excursion pin 4 and Rfmax = 1 pin 2 NCP1396A, NCP1396B F Mu&Lu Fmax + - + Vref Fmin 0.5 V Fmax Rfmax Fault area 0.6 V Figure 34. Here a different minimum frequency was ...
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... Rdt (kW) Figure 38. Dead-Time Resistor Selection NCP1396A, NCP1396B ORing Capability If for any particular reason, there is a need for a Vcc = 12 V frequency variation linked to an event appearance (instead abruptly stopping pulses), then the FB pin lends itself DT = 300 ns very well to the addition of other sweeping loops. Several ...
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... NCP1396A, NCP1396B Vdd Icharge: Fsw min + Fsw max + - Idis V-1 V Vref DT RDT Figure 40. Dead-time Generation http://onsemi.com Clk ...
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... The fast fault input undergoes a special treatment. Since we want to implement skip cycle through the fast fault input on the NCP1396A, we cannot activate the soft-start every time the feedback pin stops the operations in low power mode. Therefore, when the fast fault pin is released, ...
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... Figure 44, offers a way to observe the high-voltage (HV) rail. A resistive divider made of Rupper and Rlower, brings a portion of the HV rail on pin 5. Below the turn-on level, the 26.5 mA current source IBO is off. Therefore, the turn-on level solely depends on the division ratio brought by the resistive divider. NCP1396A, NCP1396B Ct Voltage 65 ...
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... VBO R lower IBO (V bulk1 Vout Figure 46. Adding a comparator on the BO pin offers a way to latch-off the controller NCP1396A, NCP1396B 351 Volts Vin 100 m 140 m time in seconds If we decide to turn-on our converter for Vbulk1 equals 350 V and turn it off for Vbulk2 equals 250 V, then for A version (IBO_A = 26 ...
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... Figure 47. This circuit combines a slow and fast input for improved protection features Slow Input On this circuit, the slow input goes to a comparator. When this input exceeds 1 V typical, the current source NCP1396A, NCP1396B pulses are immediately stopped. When the input is released, the controller performs a clean startup sequence including a soft-start period. ...
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... Thanks to the low activation level this pin can observe the feedback pin via a resistive divided and thus implement skip cycle operation. The resonant converter NCP1396A, NCP1396B / Itimer otherwise the voltage on Ctimer will not reach the turn-off voltage both cases, when the fault is validated, both outputs Mlower and Mupper are internally pulled down to ground ...
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... Timer Figure 51. When the Vcc is too low, all pulses are stopped until Vcc goes back to the startup voltage NCP1396A, NCP1396B Vcc from an auxiliary supply T Fault! SS Slopes are similar say, when V V pin still receives its bias current from the startup ...
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... Pulse Trigger Fault Delay A Figure 52. The Internal High-voltage Section of the NCP1396 The device incorporates an upper UVLO circuitry that makes sure enough Vgs is available for the upper side MOSFET. The B and A outputs are delivered by the internal logic, as Figure 47 testifies. A delay is inserted in the lower rail to ensure good matching between these propagating signals ...
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... SEATING C PLANE Note: The product described herein (NCP1396A/B), is covered by U.S. patent: 6,097, 075; 7176723; 6,362, 067. There may be some other patent pending. ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “ ...