The UCC27532 is a single-channel, high-speed, gate driver capable of effectively driving
MOSFET and IGBT power switches by up to 2.5-A source and 5-A sink (asymmetrical drive) peak
current. Strong sink capability in asymmetrical drive boosts immunity against parasitic Miller
turn-on effect. The UCC27532 device also features a split-output configuration where the gate-drive
current is sourced through OUTH pin and sunk through OUTL pin. This pin arrangement allows the user
to apply independent turn-on and turn-off resistors to the OUTH and OUTL pins respectively and
easily control the switching slew rates.
The driver has rail-to-rail drive capability and extremely small propagation delay
typically 17 ns.
The UCC27532DBV has CMOS input threshold centered 55% rise and 45% fall in regards of VDD
at VDD below or equal 18 V. When VDD is above 18 V, the input threshold remains fixed at its
The driver has EN pin with fixed TTL compatible threshold. EN is internally pulled up;
pulling EN low disables driver, while leaving it open provides normal operation. The EN pin can be
used as an additional input with the same performance as the IN pin.
Leaving the input pin of driver open holds the output low. The logic behavior of the
driver is shown in the application diagram, timing diagram and input and output logic truth
Internal circuitry on VDD pin provides an under voltage lockout function that holds
output low until VDD supply voltage is within operating range.
The UCC27532 driver is offered in a 6-pin standard SOT-23 (DBV) package. The device
operates over wide temperature range of 40°C to 140°C.
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