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SPM1006 Datasheet(PDF) 16 Page - Sumida Corporation

Part No. SPM1006
Description  4-28V Input 8A Output Power Supply in Inductor (PSI2) Module
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Maker  SUMIDA [Sumida Corporation]
Homepage  http://www.sumida.com
Logo SUMIDA - Sumida Corporation

SPM1006 Datasheet(HTML) 16 Page - Sumida Corporation

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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
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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