1. LM5140EVM Default Setting
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2. SW Waveform fsw=2.2MHz Vout1 3.3Vout 3A Vout2 5Vout 3A Big Jitter
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3. LM5140EVM 440kHz Operation
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4. LM5140EVM Set up for 440kHz Operation
Vin=12V
R35=0ohm was moved to R36
(changing the oscillator frequency to 440kHz)
<Vout1=3.3V>
L2=4.7uH
FB1 is tied to VDDA(3.3Vout)
R16=5.6k
C14=22nF
<Vout2=8V>
L3=22uH
FB2 is tied to GND(8Vout)
R18=22k
C26=15nF
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5. SW Vout1=3.3V Ch2: Vout, Ch3: SW, Ch4: Output current
Stable
Stable
2A Diode Emulation Mode
5A Diode Emulation Mode
Stable
Stable
2A FPWM Mode
5A FPWM Mode
© 2016 MARUBUN CORPORATION

6. Load Transient Vout1=3.3V Ch2: Vout, Ch3: SW, Ch4: Output current
Stable
Stable
1A<->5A Diode Emulation Mode
1A<->5A FPWM Mode
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7. SW Vout2=8V Ch2: Vout, Ch3: SW, Ch4: Output current
Big Jitter
Unstable
1A Diode Emulation Mode
3A Diode Emulation Mode
Big Jitter
Big Jitter
1A FPWM Mode
3A FPWM Mode
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8. SW Vout2=8V w/ Sync Ch1: Sync, Ch2: Vout, Ch3: SW, Ch4: Output current
Big Jitter
3A FPWM Mode
© 2016 MARUBUN CORPORATION

9. Load Transient Vout2=8V Ch2: Vout, Ch3: SW, Ch4: Output current
Stable
Stable
500mA<->3A Diode Emulation Mode
500mA<->3A FPWM Mode
© 2016 MARUBUN CORPORATION