Datasheet

UCC27200 , UCC27201
SLUS746B – DECEMBER 2006 – REVISED NOVEMBER 2008 ....................................................................................................................................... www.ti.com
TERMINAL FUNCTIONS
TERMINAL
I/O DESCRIPTION
NAME NO.
Positive supply to the lower gate driver. De-couple this pin to VSS (GND). Typical decoupling
VDD 1 I
capacitor range is 0.22 µ F to 1.0 µ F.
High-side bootstrap supply. The bootstrap diode is on-chip but the external bootstrap
capacitor is required. Connect positive side of the bootstrap capacitor to this pin. Typical
HB 2 I
range of HB bypass capacitor is 0.022 µ F to 0.1 µ F, the value is dependant on the gate
charge of the high-side MOSFET however.
HO 3 O High-side output. Connect to the gate of the high-side power MOSFET.
High-side source connection. Connect to source of high-side power MOSFET. Connect
HS 4 I
negative side of bootstrap capacitor to this pin.
HI 5 I High-side input.
LI 6 I Low-side input.
VSS 7 O Negative supply terminal for the device which is generally grounded.
LO 8 O Low-side output. Connect to the gate of the low-side power MOSFET.
Utilized on the DDA and DRM packages only. Electrically referenced to VSS (GND). Connect
PowerPAD™ PAD -
to a large thermal mass trace or GND plane to dramatically improve thermal performance.
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