HR1000A – RESONANT HALF-BRIDGE CONTROLLER
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Performance waveforms are generated using the evaluation board built with design example on
page 20. VAC=230V, Vout=19V, Iout=4.7A, TA=25°C, unless otherwise noted.
Oscillator Frequency vs.
Frequency-Set Resistance
1000
100
10
1.2
1.1
1
4.0
220pF
3.5
3.0
Peak value
Valley value
330pF
2.5
2.0
1.5
1.0
0.5
0
470pF
680pF
1nF
2.2nF
0.9
0.8
1
-50
0
50
100
150
1
10
100
-50
0
50
100
150
Current Mirror Ratio vs. T
Reference Voltage vs. T
Standby Threshold vs. T
J
J
J
1.45
1.40
1.04
1.03
2.3
2.2
Restart
Disable
1.35
1.30
1.25
1.20
1.15
1.02
1.01
1.00
0.99
0.98
2.1
2.0
1.9
1.8
1.7
-50
0
50
100
150
-50
0
50
100
150
-50
0
50
100
150
Delay Shutdown Charge
Current vs. T
OCP Delay Threshold vs. T
J
J
180
160
140
120
100
80
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
Shut down
Force to Max Fsw
Restart
-50
0
50
100
150
-50
0
50
100
150
TEMPERATURE ( C)
TEMPERATURE ( C)
HR1000A Rev. 1.01
8/30/2012
www.MonolithicPower.com
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
7
MPS [ MONOLITHIC POWER SYSTEMS ]
