AN8016 Panasonic Semiconductor, AN8016 Datasheet
AN8016
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AN8016 Summary of contents
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... Voltage Regulators AN8016NSH Single-channel 1.8-volt step-up DC-DC converter control IC Overview The AN8016NSH is a single-channel PWM DC-DC converter control IC that supports low-voltage operation. This IC allows a stepped-up voltage output to be pro- vided with a minimal number of external components. It features a low minimum operating voltage of 1.8 V, and due to being provided in a 10-pin surface mount package with a 0 ...
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... AN8016NSH Block Diagram Active-high 4 On/off Off voltage supply control 10 FB Error amp 1. Low level detector comp. Low level 0.23 V S.C.P. 1.27 V comp. Pin Descriptions Pin No. Symbol 1 IN Error amplifier inverting input 2 S.C.P. Time constant capacitor connection for short-circuit protection 3 SS Soft-start time-constant capacitor connection ...
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... OFF I 40 (min.) SO(OUT (max.) SI(OUT 100 to 10 000 000 OUT C 1 000 (min.) SCP 10k B AN8016NSH Unit Unit kHz ...
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... AN8016NSH Electrical Characteristics at V Parameter U.V.L.O. block Circuit operation start voltage Error amplifier block Input threshold voltage Line regulation with input fluctuation Input bias current High-level output voltage Low-level output voltage PWM comparator block Output source current Output block Oscillator frequency Maximum duty ...
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... Conditions THdT 0.5 V SO(FB 0.5 V SI(FB 390 1 THL I V 1.5 V OFF OFF AN8016NSH Min Typ Max Unit 0.8 V 0.5 0 1. ...
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... AN8016NSH Terminal Equivalent Circuits Pin No. Equivalent Circuit 300 0. 1. 0.23 V Low level detection comp 0. Unlatch comp Error amplifier inverting input. 1.26 V S.C.P.: Connection for the capacitor that sets the ...
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... Use an oscillator frequency in the range 20 kHz to 1 MHz. FB: Error amplifier output. A source current is about 40 A and a sink PWM current is about 2 mA. C Correct the gain and the phase frequency characteristics by inserting a capacitor and a resistor between this pin and IN pin. 10 AN8016NSH Description ...
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... AN8016NSH Usage Notes Notes on IC power dissipation Since the power dissipation in this IC increases proportionally with the supply voltage, applications must be careful to operate so that the actual power dissipation does not exceed the power dissipation. Since the output current set by the application circuit flows in the IC during the period corresponding to the output on duty factor (Du, where ...
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... Ambient temperature 6 000 Oscillator frequency temperature characteristics 192 190 188 186 184 182 180 AN8016NSH Maximum duty Oscillator frequency 6 100 Oscillator frequency (kHz ...
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... AN8016NSH Application Notes (continued) [3] Timing charts (internal waveforms) Off pin voltage Supply voltage (V Power on Triangular wave (CT) Out pin waveform Short-circuit protection comparator threshold level Dead time voltage ( Error amplifier output (FB) Triangular wave (CT) Out pin waveform S.C.P. pin voltage Short-circuit protection comparator output ...
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... The output voltage V tor-dividing the output as shown in figure 2. Rapid charge 1 0.75 [Hz OUT R1 R2 can be set by resis- OUT Figure 2. Connection method of error amplifier AN8016NSH V OSCH V OSCL Discharge T Figure 1. Triangular oscillator waveform 1.27 OUT ...
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... AN8016NSH Application Notes (continued) [4] Function descriptions (continued) 4. Timer latch short-circuit protection circuit This circuit protects the external main switching element, flywheel diode, choke coil, and other components against degradation or destruction if an excessive load or a short circuit of the power supply output continues for longer than a certain fixed period ...
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... PE2 C 0.23 S 0.06 0.817 Figure 3. S.C.P. pin charging waveform V CC U.V.L. Latch 0. High level detection comparator 1. Figure 4. Short-circuit protection circuit AN8016NSH . FB connected to the S [V] Short-circuit detection time [ PE1 PE2 Internal reference Output shutoff Q 13 ...
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... AN8016NSH Application Notes (continued) [6] Setting the soft start time A soft start function, which gradually increases the width of the output pulses at power on, will be applied if a capacitor is connected to the SS pin. This can prevent rush currents and overshoot when the power supply is turned on. ...
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... IC will continue to operate at the maximum duty drive. OSC AN8016NSH Master AN8016NSH Slave S.C.P. SS S.C.P. Figure 6. Slave operation circuit example 2) Note that it is not possible to operate this IC (the AN8016NSH) with the two-channel AN8017SA/AN8018SA together in parallel synchronous mode. OSC AN8016NSH Master SS S.C.P. Figure 7. Slave operation circuit example AN8016NSH AN8016NSH Slave ...
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... The figure shows a step-up circuit that converts input output. The AN8016NSH output stage has a totem pole circuit configuration, and can directly drive an n-channel MOSFET while minimizes switching loss and increasing efficiency. In this case, replace the npn transistor with an n-channel MOSFET in above circuit ...
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... Use a relatively long line for the low-impedance side of the output voltage detection resistor R2. AN8016NSH [3] Evaluation board Off V IN (4) C3 (3) SBD AN8016NSH R2 DC-DC CONVERTER BOARD AN8016NSH and ground pins, and assure that there CC (2) SBD V OUT Q1 GND (1) (5) V OUT C6 GND ...