HV100DB1 Datasheet | Supertex Inc

features of the HV100 hotswap controller. Intended primarily as a negative hotswap controller, the HV100 controls the negative supply path. Included on board is a 100µF capacitor (C3) to provide a capacitive load for testing. Additional capacitance may be connected to the VOUT terminals. Or the 100µF may be removed altogether The board may be modified to meet custom requirements. Instructions are provided on the next page for modifications. Specifications Input Voltage Peak Inrush Limit Max Short Circuit Current1 Circuit Breaker Response Time1 Auto Retry On Resistance Undervoltage Trip 10V to 72V 1.4A typ 4A typ 1ms typ 2.5s typ 210m W_ max 37V on, 34V off During inrush limiting Board Layout and Connections VPP IN +OUT VPP OUT U1 DRAIN GATE Q1 + C3 -OUT VNN IN C2 C1 R2 VOUT Power Supply or Load Current Probe R1 Connect the supply voltage to these terminals. Supply voltage may range from 10 volts to 72 volts. A high source impedance may cause oscillations when the input voltage is near the undervoltage trip point. A high source impedance results in a large voltage drop when loaded, causing undervoltage lockout to kick in, disconnecting the load. With the load removed, input voltage rises, causing undervoltage to release and reconnecting the load. The cycle repeats, resulting in oscillations. Source impedance must be less than the following to avoid oscillations: alt Q1 VOUT Connect the power supply or other load to these terminals. VOUT+ is connected to VIN+, it is VOUT- that is switched. Application of a DC load during start-up and/or additional load capacitance extends the time inrush limiting is active. If this time exceeds 100ms, the HV100 shuts off, retrying 2.5s later. For this reason, DC load at start-up should be less than 900m A. Note that DC start-up load limitation decreases with added load capacitance. Note that the circuit breaker functions during inrush only. RSOURCE = 01/21/02 1.5V I LOAD Supertex Inc. does not remend the use...