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MDC_ICH_360W_A04 Page 14 of 17

ICH 360-Watt Series

Wide Input Isolated Half Brick DC-DC

Characteristic Waveforms - ICH0513V1PC

Fig. 28: Turn-on by ON/OFF transient (with Vin applied) at full rated load

current (resistive) at Vin = 24V. Top trace (C1): ON/OFF signal (5 V/

div.). Bottom trace (C4): Output voltage (10 V/div.). Time: 5 ms/div.

Fig. 29: Turn-on by Vin transient (ON/OFF high) at full rated load current

(resistive) at Vin = 24V. Top trace (C2): Input voltage Vin (10 V/div.).

Bottom trace (C4): Output voltage (10 V/div.). Time: 100 ms/div.

Fig. 30: Output voltage response to load current step change 50% - 75%

- 50% (6.5A-9.75A-6.5A) with di/dt = 1A/µs at Vin = 24V. Top trace

(C4): Output voltage (200 mV/div.). Bottom trace (C3): Load current

(10A/div.). Co = 470µf/70m . Time: 1ms/div.

Fig. 31: Output voltage response to load current step change 50% -

100% - 50% (6.5A-13A-6.5A) with di/dt = 1A/µs at Vin = 24V. Top

trace (C4): Output voltage (500 mV/div.). Bottom trace (C3): Load

current (10A/div.). Co = 470µf/70m . Time: 1ms/div.

Fig. 32: Output voltage ripple (200mV/div.) at full rated load current into

a resistive load at Vin = 24V. Co= 470 µF/70m . Time: 2 µs/div.

Fig. 33: Input reflected ripple current, ic (500mA/mV), measured at input

terminals at full rated load current at Vin = 24V.

Refer to Fig. 2 for

test setup. Time: 2µs/div. RMS input ripple current is 0.935*500mA =

549mA.