Newmar DC to DC Converters ISP Series

As well as voltage conversion, this series provides input/output isolation, allowing use of negative ground electronics on off-highway vehicles which typically employ positive ground battery systems. May also be used as a Voltage Stabilizer for sensitive equipment. Offers protection against line transients and voltage spikes typically caused by large DC motors and switching transients often encountered on fork lifts, locomotives and light rail. A special circuit clamps input spikes to a safe level, protecting both the converter and the powered equipment. This product series is further enhanced with extra rugged construction of case and internal components for severe vibration applications.

Performance Specifications: Isolated and ISP Series

Output: 13.6 VDC (internally adjustable 12.6-14.5) or 24.5 VDC (or specify)
Ripple: 150 mV P-P Regulation: +/- 2% Line/Load Duty Cycle Ratings*: Intermittent - 20 minutes,
max on time,20% duty, Continuous - 24 hours, 100% duty *Current limit set at approximately 105% of intermittent rating
Idle Current: (including power "on" indicator light) approx. 50 mA
Operating Temp: ISP Series: see temperature rating curves (below)
Switching Frequency: 70Khz
Efficiency: 85% - typical.
DC Isolation: 1,400 VDC

ISP Surge Protection

Transient Energy Capability:
36 VDC Input: 140 joules (Watt-Seconds) Peak Current, 2,000 Amps
72 & 110 VDC Input: 100 Joules (Watt-Seconds) Peak Current, 12,000 Amps

Temperature Specifications - ISP Series:
Operating Temperature -40° C to +80°C Thermal shutdown @ 85° C Case Temperature