LLC Resonant Converter Vo=50V Io=50A
ROHM PD SimG
LLC Resonant Converter Simulation Circuit
Input: Vin=300V ~ 500V
Output: Vo=50V Iout=10A ~ 50A
U1
PFM-LLC-CONVERTER
Vin=400V
Id_Q1
Vd=10
Vs=-5
DH1
PFM: fsw=50kHz ~ 100kHz
400
V1
R6047ENZ1
Q1
Rso1=5
Rsi1=2
100u
DH0
Gate Drive: Vd=10V / Vs=-5V
td1,td2=50ns
Rg source=5Ω
Rg sink=2Ω
td1=50n
td2=50n
L1
R6047ENZ1
Q2
DL1
TX1
P1
DRB238T150 M=2
D1
S1
If_D1
Rso2=5
Rsi2=2
Is_Q2
Vo=50V
Io=50A
TX1-30
DL0
Q1,2: R6047ENZ1 MOSFET (600V 47A)
D1,2: RB238T150 SBD (150V 40A)
f min=50k
f max=100k
Vref =500m
C1
100n
S2
C3
100u
{Vo/Io}
R4
FB
DRB238T150 M=2
D2
TX1: 500uH : 80uH + 80uH K=1
If_D2
L1: 100uH
{(Vo-0.5)*10k}
C1: 100nF
5k
R2
C4
100n
R1
Tj: -25℃ ~ 125℃
SIMetrix SPICE Simulation Data File
DC-DC LLC Resonant Converter Vo=50V Io=50A.sxsch
© 2015 ROHM Co.,Ltd.
P. 1
Simulation Waveform 1
ROHM PD SimG
Vin=400V
Vo=50V
Io=50A
Tj=100℃
Vo, If, Id, Is Waveform
Expansion (5.00ms ~ 5.05ms)
70
70
60
60
Vo (V)
Vo (V)
50
TX1-21 / V
TX1-21 / V
50
40
30
20
40
30
20
Expansion (5.00ms ~ 5.05ms)
10
10
-0
100
-0
100
80
80
Blue: If_D1 (A)
40
Olive: If_D2 (A)
60
A
Blue: If_D1 (A)
A
60
40
20
20
-0
-0
40
40
Red: Id_Q1 (A)
30
Red: Id_Q1 (A)
30
20
20
Green: Is_Q2 (A)
10
A
10
A
Olive: If_D2 (A)
0
0
-10
-10
-20
-20
-30
-30
-40
-40
0
Time/mSecs
© 2015 ROHM Co.,Ltd.
2
4
6
8
10
2mSecs/div
Green: Is_Q2 (A)
5.005
Time/mSecs
5.01
5.015
5.02
5.025
5.03
5.035
5.04
5.045
5.05
5uSecs/div
P. 2
Simulation Waveform 2
Vin=400V
Vo=50V
Io=50A
Tj=100℃
Q1: Loss, Pd, Vds, Id
D2: Loss, Pd, Vf, If
500
E_D2 (uJ)
400
300
Conduction Loss
200
100
-0
2
1
0
Vds_Q1 (V)
Pd_D2 (W)
60
40
20
0
0
400
-:TX1.31 / V
V@Q1-D - V@U1-DH0 / V
100
-40
20
-2
300
sw off->on
sw on->off
200
100
Vf_D2 (V)
-20
-40
-60
-80
-100
-0
-120
Id_Q1 (A)
If_D2 (A)
I(D2-anode) / A
I(Q1-D) / A
Conduction Loss
200
-20
-1
20
10
0
-10
80
60
40
20
-20
-30
300
80
3
30
400
-0
Pd_Q1 (kW)
Power(D2) / W
Power(Q1) / kW
4
ROHM PD SimG
500
Switching Loss
E_Q1 (uJ)
integ(:D2#pwr) / uJ
integ(:Q1#pwr) / uJ
600
Vin=400V
Vo=50V
Io=50A
Tj=100℃
5.016
5.018
Time/mSecs
© 2015 ROHM Co.,Ltd.
5.02
5.022
5.024
5.026
5.028
5.03
5.032
5.034
2uSecs/div
-0
5.016
5.018
Time/mSecs
5.02
5.022
5.024
5.026
5.028
5.03
5.032
5.034
2uSecs/div
P. 3
Efficiency, Power Dissipation 1
ROHM PD SimG
Vo=50V Io=50A
ITj=100℃
Vin: 300V ~ 500V
100
100
Eff (%)
Efficiency: Po/Pin*100
99
99
98
98
Efficiency / Percent
Efficiency / Percent
Eff (%)
97
96
Efficiency: Po/Pin*100
97
96
95
95
94
50
94
50
Pd (W/pc)
Pd (W/pc)
Power Dissipation
Power Dissipation
40
Power Dissipation / W
40
Power Dissipation / W
Vin=400V Vo=50V
Tj=100℃
Io: 10A ~ 50A
Q1,Q2
30
20
D1,D2
10
30
Q1,Q2
20
D1,D2
10
250
300
Input Voltage/V
© 2015 ROHM Co.,Ltd.
350
400
450
500
Vin (V)
550
50V/div
0
0
10
Output Current/A
20
30
40
50
Io (A)
60
10A/div
P. 4
Efficiency, Power Dissipation 2, fsw - Io
ROHM PD SimG
Vin=400V Vo=50V
Io=50A
Tj: -25℃ ~ 125℃
100
100
Eff (%)
Vin=400V Vo=50V
Tj=100℃
Io: 5A ~ 50A
Switching Frequency
fsw (kHz)
Efficiency: Po/Pin*100
98
90
97
96
Switching Frequency / kHz
Efficiency / Percent
99
95
94
50
Power Dissipation
Pd (W/pc)
80
70
Power Dissipation / W
40
Q1,Q2
30
60
20
D1,D2
10
-40
-20
0
Junction Temperature/degC
© 2015 ROHM Co.,Ltd.
20
40
60
80
100
Tj (℃)
120
140
20degC/div
50
0
10
Output Current/A
20
30
40
50
Io (A)
60
10A/div
P. 5