DPA425R Datasheet, PDF (22/34 Pages) Power Integrations, Inc. – Highly Integrated DC-DC Converter ICs for Power over Ethernet & Telecom Applications

DPA422-426
Parameter
Symbol
Control Functions (cont.)
Softstart Time
t_SOFT
PWM Gain
DC_REG
PWM Gain
Temperature Drift
Conditions
SOURCE = 0 V; T_J = -40 to 125 °C
See Figure 33
(Unless Otherwise Specified)
T_J = 25 °C; DC_MIN to DC_MAX
T_J = 25 °C; I_C = I_C(SKIP) + I_B)/2
See Note A
Dynamic Impedance
Z_C
T_J = 25 °C; I_C = I_C(SKIP) + I_B)/2
Dynamic Impedance
Temperature Drift
CONTROL Pin Internal
Filter Pole
Shutdown/Auto-Restart
CONTROL Pin
Charging Current
Charging Current
Temperature Drift
During Startup and Auto-Restart:
V_C = 5.0 V; V_D = 16 V & 40 V; T_J = 25 °C
I_C(CH))
Average Current at the Beginning of
Softstart: V_C = 5.0 V; V_D = 16 V & 40 V;
T_J = 25 °C
See Note A
Auto-Restart Upper
Threshold Voltage
V_C(AR)U
Auto-Restart Lower
Threshold Voltage
V_C(AR)L
Auto-Restart
Hysteresis Voltage
V_C(AR)Hyst
Auto-Restart
Duty Cycle
DC_(AR)
C_CONTROL = 22 mF; f_OSC = 400 kHz;
V_X = 0 V
Auto-Restart
Frequency
f_(AR)
C_CONTROL = 22 mF; f_OSC = 400 kHz;
V_X = 0 V
Line-Sense (L) and External Current Limit (X) Inputs
Line Undervoltage
Threshold Current and
I_UV
Hysteresis (L Pin)
T_J = 25 °C
Threshold from Off to On
Threshold from On to Off
Hysteresis
Line Overvoltage or
Remote ON/OFF
Threshold Current and
I_OV
Hysteresis (L Pin)
T_J = 25 °C
Threshold from On to Off
Threshold from Off to On
Hysteresis
Remote ON/OFF
Negative Threshold
Current and
Hysteresis (X Pin)
Threshold from On to Off
I_REM
T_J = 25 °C Threshold from Off to On
Hysteresis
Min
-28
10
-5.2
4.5
0.8
48
44.5
2
117
-27
Typ
5
-22
-0.01
15
0.18
30
-4
-19
-0.6
5.8
4.8
1
3.8
50
47
3
135
131
4
-21.5
-25.5
4.5
Max Units
7.2
ms
-18
%/mA
%/mA/°C
22
W
%/°C
kHz
-3
mA
%/ °C
V
5.1
V
V
10
%
Hz
52
49.5
mA
149
mA
-16
mA
22
Rev. T 12/12
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