DDR12 Datasheet, PDF (6/11 Pages) Artesyn Technologies – Tracking Dual Output DC-DC Converters

Electrical Charact. - Vtt O/P
Characteristic
Tracking accuracy
Symbol
Ripple and noise
Load transient response -
peak deviation
Load transient response -
recovery
External load capacitance
Cext (Vtt)
Output current - continuous
Output current - short circuit
Itt
Isc-tt
Min
1000
0
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DC-DC Converters
Typ
12
3
200
1680
0
Max
25
30
3000
8
Units
Notes and Conditions
mV
Measured at converter pins
(=Vddq/2 - Vtt)
mV pk-pk With recommended external
load capacitance and
5 Hz to 20 MHz bandwidth
%
Peak deviation for 75% to 100%
step load, di/dt = 8 A/µs
µs
Settling time to within 1% of
output setpoint voltage for
75% to 100% step load
µF
Recommended 3 x 560 µF with
total ESR of 5 mΩ and additional
high-quality ceramic capacitors.
Consult factory for other capacitance
Adc
A rms
Latching short circuit protection
power or enable needs to be
cycled
Protection and Control Features
Characteristic
Symbol
Min
Typ
Max
Units
Notes and Conditions
Overcurrent limit inception
Iddq
Itt
36
Adc
14
Adc
Efficiency
Characteristic
Efficiency
Symbol
Min
Typ
Max
Units
Notes and Conditions
η
84
%
Full load
6
File Name: lf_ddr12.pdf Rev: 29 Nov 2005