Automotive-grade non-synchronous boost controller touts wide input range
8/23/2011 5:02 PM EDT
ON Semiconductor introduced a new adjustable output non-synchronous boost controller for automotive systems.
The NCV8871 is a wide input voltage device, with a range of 3.2 V to 44 V, which can be used to drive an external N−channel MOSFET. The device incorporates an internal regulator that supplies charge to the gate driver. This new boost controller has a 3.0 µA quiescent current when in sleep mode, allowing power consumption to be minimized. It features a synchronizable switching frequency, with two available versions that can be set at 170 kHz typical, or 1 MHz typical.
Peak current mode control with internal slope compensation ensures device stability over the wide automotive battery range. This also ensures the device is protected during a current fault condition by turning off the power switch for the remainder of the cycle if the current limit is exceeded. Further protection is provided by a thermal shutdown mechanism (with a 170 ⁰C threshold) and a 3.1 V undervoltage lockout.
- 3.0 µA quiescent current
- Synchronizable switching frequency can be set at 170 kHz typical, or 1 MHz typical.
- 1.2 V 2% Reference voltage
- Wide input voltage range of 3.2 volts (V) to 44 V
- Output power ranges from a few watts (W) up to 200 W in a boost topology.
- Operating junction temperature of −40 ⁰C to 150 ⁰C
- Pb-free, RoHS compliant SOIC-8 package
Pricing: $0.83 per unit in quantities of 2,500 units.
Datasheet: Click here.