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, V
out
=19V, I
out
=4.7A, T
A
=25°C, unless otherwise noted.
Oscillator Frequency vs.
Frequency-Set Resistance
1.2
1000
220pF
CT VOLTAGE (V)
4.0
3.5
330pF
470pF
680pF
3.0
2.5
2.0
1.5
1.0
0.5
Valley value
Peak value
1.1
100
1
Fsw (kHz)
10
0.9
0.8
-50
2.2nF
1nF
0
50
100
150
1
1
10
100
0
-50
0
50
100
150
Current Mirror Ratio vs. T
J
CURRENT MIRROR RATIO (V)
Reference Voltage vs. T
J
2.3
REFERENCE VOLTAGE (V)
STANDBY THRESHOLD (V)
Standby Threshold vs. T
J
1.45
1.40
1.35
1.30
1.25
1.20
1.15
-50
Disable
Restart
1.04
1.03
1.02
1.01
1.00
0.99
0.98
-50
0
50
100
150
2.2
2.1
2.0
1.9
1.8
1.7
-50
0
50
100
150
0
50
100
150
DELAY SHUTDOWN THRESHOLD (V)
180
160
140
120
100
Delay Shutdown Charge
Current vs. T
J
OCP Delay Threshold vs. T
J
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-50
0
50
100
150
TEMPERATURE ( C)
Restart
Shut down
Force to Max Fsw
80
-50
0
50
100
TEMPERATURE ( C)
150
HR1000A Rev. 1.01
www.MonolithicPower.com
8/30/2012
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2012 MPS. All Rights Reserved.
7
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