ncp1582a ON Semiconductor, ncp1582a Datasheet
ncp1582a
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ncp1582a Summary of contents
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... V. This 8−pin device provides an optimal level of integration to reduce size and cost of the power supply. Features include a 0.7 A gate driver and an internally set 350 kHz (NCP1582, NCP1582A) and a 300 kHz (NCP1583) oscillator. The NCP158x also incorporates an externally compensated transconductance error amplifier and a programmable soft− ...
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... NCP1582, NCP1582A, NCP1583 Figure 2. Typical VGA Card Application Diagram 6 FB − REF COMP/DIS 3 BST FB COMP/DIS TG PHASE BG GND POR UVLO FAULT LATCH FAULT + R − PWM Q OUT S Clock Ramp OSC OSC FAULT Figure 3. Detailed Block Diagram http://onsemi.com 2 V OUT ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 1. 60−180 seconds minimum above 237°C. NCP1582, NCP1582A, NCP1583 Description range from 0 mF. Ensure that C BST ...
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... Lower Gate Sink PHASE Falling to BG Rising Delay BG Falling to TG Rising Delay Enable Threshold 2. Specifications to −40°C are guaranteed via correlation using standard quality control (SQC), not tested in production. NCP1582, NCP1582A, NCP1583 (0_C < T < 70_C, −40_C < T < 125_C (Note 2), 4.5 V < ...
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... NCP1582, NCP1582A, NCP1583 TYPICAL OPERATING CHARACTERISTICS 380 370 360 350 340 330 320 310 −50 − JUNCTION TEMPERATURE (°C) J Figure 4. Oscillator Frequency (F Temperature 812 808 804 800 796 792 788 784 −50 − JUNCTION TEMPERATURE (°C) J Figure 6 ...
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... In the event of an overcurrent during soft start, the overcurrent logic will override the soft start sequence and will shut down the PWM logic and both the high side and low side gates. NCP1582, NCP1582A, NCP1583 DETAILED OPERATING DESCRIPTION V comp ...
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... PWM OUT Careful selection and layout of external components is required, to realize the full benefit of the onboard drivers. The capacitors between V and GND and between BST CC and SWN must be placed as close as possible to the IC. The NCP1582, NCP1582A, NCP1583 UVLO FAULT + − − UVLO FAULT Figure 11 ...
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... DV 1 comp V out NCP1582, NCP1582A, NCP1583 APPLICATION SECTION The above calculation includes the delay from comp rising to when output voltage becomes valid. To calculate the time of output voltage rising to when it reaches regulation the difference between the comp voltage reaching regulation and 1.1 V. ...
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... The output voltage error of this bias current can be estimated using the following equation (neglecting resistor tolerance): 0 Error REF Once R1 has been determined, R2 can be calculated. NCP1582, NCP1582A, NCP1583 350 kHz Figure 12. Type II Transconductance Error Figure 12 shows a typical Type II transconductance error amplifier (EOTA) ...
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... BST pin voltage. BST The lower (synchronous) MOSFET gate driver losses are PHASE NCP1582 Figure 14. Components to be Considered for NCP1582, NCP1582A, NCP1583 Where total lower MOSFET gate charge The junction temperature of the control IC can then be calculated as: ...
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... 2.3 kHz * 1500 The compensation capacitor also acts as the soft start capacitor. By adjusting the value of this compensation capacitor, the soft start time can be adjusted. NCP1582, NCP1582A, NCP1583 Pole of the compensation network is calculated as follows; + The recommended compensation values are 1500 The NCP158x bode plot as measured from the network analyzer is shown below ...
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... NCP1582, NCP1582A, NCP1583 Demo Board PCB Layout http://onsemi.com 12 ...
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... NCP1582, NCP1582A, NCP1583 Item Number Part Reference C10 6 C11 7 C12 C13 C14 C15 8 C16 C17 C18 C19 9 C20 10 C21 11 CR1 Bill of Materials Value Quantity ...
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... NCP1582, NCP1582A, NCP1583 TYPICAL PERFORMANCE CHARACTERISTICS Figure 16. Start Up Figure 18. Transient Response (0−10 A Step Load) Figure 20. Over Current Protection ( Trip) Figure 17. Gate Waveforms 15 A Load Sustaining Figure 19. Transient Response LOAD CURRENT (A) Figure 21. Efficiency vs. Load Current http://onsemi.com ...
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... NCP1582, NCP1582A, NCP1583 −X− 0.25 (0.010 −Y− SEATING PLANE −Z− 0.25 (0.010 *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. ...
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... Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada Email: orderlit@onsemi.com NCP1582, NCP1582A, NCP1583 N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: ...