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SPM1006 Datasheet(PDF) 16 Page - Sumida Corporation |
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SPM1006 Datasheet(HTML) 16 Page - Sumida Corporation |
16 / 22 page SPM1006 Version 1.5 March 16, 2016 Page 16 of 22 Transient Response SPM1006 uses instant PWM control and achieves excellent transient performance. The following table summarizes the measured data when the load current undergoes a step change between 2A and 5A for output voltage setting of 5V and input voltage of 12V. The slew rate for the load current change is 1A/µs. VOUT setting Transient voltage (3A step) Recovery time 5V 40mV 150μs 0.6V 20mV 50μs The measured transient waveform for 5V output is given in Fig. 24, and for 0.6V output in Fig. 25. Fig. 24 Transient Response (VIN = 12V, VOUT = 5V) Fig. 25 Transient Response (VIN = 12V, VOUT = 0.6V) The above figures show the typical output voltage waveform when the load current undergoes a step change between 2A and 5A (3A step), showing that the SPM1006 can achieve excellent dynamic performance. Over Current Protection For protection against over-current faults, SPM1006 will shut down when the load current is higher than the over- current protection (OCP) level. During an over-current condition, SPM1006 will operate in hiccup mode and will try to re-start automatically. The hiccup operation will continue until the over-current condition is removed or input power is removed. Fig. 26 shows the output voltage and output current waveforms during over-current protection operation for SPM1006 set to 1.8V output. Performance at other output voltage settings is similar. When the over-current condition is removed, the output voltage recovers automatically to the nominal voltage, as shown in Fig. 27. |
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