Product Description
The PI3740-00 is a high-efficiency, wide input and output
range DC-DC ZVS Buck-Boost Regulator. This high-density
System‑in‑Package (SiP) integrates controller, power switches,
and support components. The integration of a high-performance
Zero‑Voltage Switching (ZVS) topology within the PI3740-00
increases point-of-load performance, providing best-in-class
power efficiency.
The PI3740-00 requires an external inductor, resistive divider and
minimal capacitors to form a complete DC-DC switching mode
buck-boost regulator.
The ZVS architecture also enables high-frequency operation while
minimizing switching losses and maximizing efficiency. The high
switching frequency operation reduces the size of the external
filtering components, improves power density and enables fast
dynamic response to line and load transients.

Features & Benefits
• Up to 96% efficiency
• 50 – 140W continuous output power
• Parallel-capable with single-wire current sharing
• External frequency synchronization / interleaving
• High-side current sense amplifier
• General-purpose amplifier
• Lighting / constant current mode (LGH)
• Input over / undervoltage lockout (OVLO / UVLO)
• Output overvoltage protection (OVP)
• Overtemperature protection (OTP)
• Fast and slow current limits
• –40 to 115°C operating range (TJ), -LGIZ
• –55 to 115°C operating range (TJ), -LGMZ
• Excellent light-load efficiency
Applications
• Battery Charging and Conditioning, Telecom,
Networking, Lighting
• Computing, Communications, Industrial,
Automotive Accessories
• 12, 24, 48 and 60V DC–DC Applications