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2,000 W Modular Power Supplies Offer Full MoPPs Isolation

TDK has announced the introduction of the TDK-Lambda
brand QM8B modular power supplies rated at up to 2,000 W. This further extends
the QM series which can provide 550 W to 2,000 W output power. The QM8B models
are available with up to 18 outputs, have full MoPPs (Means of Patient
Protection) isolation and low acoustic noise. With medical and industrial
safety certifications, the power supplies are suitable for use in medical, test
and measurement, communications and broadcast equipment. This avoids the need
for multiple power supplies in systems requiring a large number of independent

Accepting a wide range 90 to 264 Vac, 47-63Hz input (440 Hz
with reduced PFC), the QM8B can deliver 1200 W at low line and 2000 W with a
high line 180-264 Vac input. With its modular construction, the series can be
configured using a simple on-line configurator to provide 1 to 18 independently
regulated outputs and include individual output good signal and remote on/off
functions. The QM series module output voltages range from 2.8 V to 105.6 V and
have output power levels from 300 W to 1200 W. A further subset of option
modules provides an AC Fail signal, standby voltages (up to 12 V, up to 2 A),
global remote on/off and PMBus communications. Overall case dimensions for the
QM8B are 200 x 63.3 x 268 mm (W x H x D).

The QM8B will operate in ambient temperatures of -20 to
+70°C (-40°C start-up), with output power and output current linearly derating
above 50°C to 50% at 70°C. With efficiencies of up to 91%, less internal heat
is generated allowing the use of low speed cooling fans to reduce audible
noise. A lower airflow speed also significantly reduces the ingress of dirt and
other contaminants, improving product reliability. All models in the QM series
have a seven-year warranty as standard.

The power supply has 4,000 Vac (2 x MoPPs) input to
output, 1,500 Vac (1 x MoPP) input to ground and 1,500 Vac (1 x MoPP) output to
ground isolation. All models are certified to the IEC/EN/UL/CSA 60601-1,
ANSI/AAMI ES 60601-1 and IEC/EN/UL/CSA 60950-1 safety standards. The QM series
is also designed to meet IEC/EN 61010-1 with CE marking for the Low Voltage,
EMC and RoHS Directives. Earth leakage current is less than 300 µA, and
complies with the EN 61000-6-3:2007 and EN 60601-1-2:2015 (curve B conducted
and radiated) emission standards. The units also meet the EN 60601-1-2 4th
edition and EN 61000-6-2 immunity standards and are designed and manufactured
under the control of ISO9001 and ISO13485 (including risk management).

TDK-Lambda |

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2,000 W Modular Power Supplies Offer Full MoPPs Isolation

by Circuit Cellar Staff time to read: 2 min