SMP402 Power Integrations Inc., SMP402 Datasheet
SMP402
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SMP402 Summary of contents
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... Protection features include undervoltage lockout, thermal shutdown, and input polarity and level sensing. The SMP402 is available in a 16-pin plastic SOIC package VDC - Figure 1. Typical Application. ...
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... SMP402 ENABLE V BIAS HV REG REF A GND BANDGAP R EXT REF D GND C EXT OSC EA OUT + ERROR AMPLIFIER SENSE SENSE- Figure 3. Functional Block Diagram 1/96 UV LOCKOUT THERMAL SHUTDOWN PWM COMPARATOR - ...
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... External bypass capacitors connected to V and V are LS S required for filtering and reducing noise. SMP402 Pin 11: EA OUT is the error amplifier output pin for connection to the external compensation network. Pin 12 the error amplifier negative input for connection to the feedback and compensation networks ...
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... V OUT LEVEL POLARITY 0 V Figure 4. Turn-on and Turn-off Waveforms of the SMP402 1/96 Pulse Width Modulator The pulse width modulator implements a voltage-mode control loop, and generates the digital driver signal which controls the power switch. The duty cycle of the driver signal will change as a function of input voltage and load ...
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... Figure 6. Also shown are the level and polarity outputs. The input voltage must rise above 32 V before the SMP402 will turn on. At this input voltage the current through R1 into the SENSE+ input exceeds the threshold current (typically 23 A), the LEVEL ...
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... R2 1 3.3 M 3.3 M Figure 6. Schematic Diagram of a Non-isolated ISDN Regulator Circuit Utilizing the SMP402. General Circuit Operation The Buck DC-to-DC converter shown in Figure 6 produces a single non-isolated power supply. The high- voltage P-channel MOSFET transistor in the SMP402 is turned on and off at the switching frequency ...
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... Load Power (W) the power output capability for a 470 H output filter inductor (L1). The output power versus frequency curve was generated by characterization of the SMP402 at various frequencies. The LOAD REGULATION 105 104 103 102 101 VDC 100 0 100 200 300 ...
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... SMP402 V Voltage .................................................................. Drain-Source Voltage (V to OUT) ........................... Voltage .............................................................. 5.5 V BIAS SENSE Current .................................................... 200 A OUT Voltage ........................................ V OUT Current .......................................................... 250 mA Logic Input Voltage ........................... -0 Storage Temperature ..................................... –65 to 125 C (2) Operating Junction Temperature . ................... 0 to 150 C Parameter Symbol OSCILLATOR Output f Frequency OSC Initial f Accuracy ...
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... -100 mA OUT T = 100 See Note 100 C j SMP402 Min Typ Max Units 120 140 -500 -100 A 3.0 V 1.0 V 3.5 V 0.4 V 1.7 2 ...
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... At low output currents (< 20 mA), the part may operate in blocking oscillation mode, resulting in large output ripple. 2. Applying >3 the EA IN pin activates an internal test circuit that turns on the output switch continuously. Destruction of the part can occur if the output of the SMP402 is connected to a high voltage power source when the test circuit is activated. ...
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... Drain Voltage (V) DRAIN CAPACITANCE ENERGY PWM vs. EXTERNAL CAPACITANCE 500 400 300 200 100 0 0 DRAIN CHARGE vs. DRAIN VOLTAGE 3.0 2.5 2.0 1.5 1.0 0 Drain Voltage (V) SMP402 100 200 300 400 500 External Capacitance (pF Drain Voltage (V) D 1/96 11 ...
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... SMP402 PACKAGE POWER DERATING Case Temperature ( C) S16A DIM inches mm A .398-.413 10.10-10.50 B .050 BSC 1.27 BSC C .014-.018 0.36-0.46 E .093-.104 2.35-2.65 F .004-.012 0.10-0.30 J .394-.418 10.01-10.62 L .009-.012 0.23-0.32 M .020-.040 0.51-1.02 N .291-.299 7.40-7.60 Notes: 1. Package dimensions conform to JEDEC specification MS-013-AA for standard small outline (SO) package, 16 leads, 7 ...
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... NOTES SMP402 D 13 1/96 ...
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... SMP402 14 D 1/96 NOTES ...
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... NOTES SMP402 D 15 1/96 ...
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... SMP402 Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein, nor does it convey any license under its patent rights or the rights of others. ...