1 Features
1• Programmable Output Turnon Delay
• Adaptive Delay Set
• Bidirectional Oscillator Synchronization
• Capability for Voltage-Mode or Current-Mode
Control
• Programmable Soft Start/Soft Stop and Chip
Disable Via a Single Pin
• 0% to 100% Duty-Cycle Control
• 7-MHz Error Amplifier
• Operation to 1 MHz
• Low-Active Current Consumption (5-mA Typ at
500 kHz)
• Very-Low-Current Consumption During
Undervoltage Lockout (150-μA Typ)

• Supports Defense, Aerospace, and Medical
Applications:
– Controlled Baseline
– One Assembly/Test Site
– One Fabrication Site
– Available in Military (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability

2 Description
The UCC2895-EP is a phase-shift pulse-width
modulation (PWM) controller that implements control
of a full-bridge power stage by phase shifting the
switching of one half bridge with respect to the other.
It allows constant frequency PWM in conjunction with
resonant zero-voltage switching to provide high
efficiency at high frequencies. The device can be
used either as a voltage-mode or current-mode
controller.
While the UCC2895-EP maintains the functionality of
the UC2875/6/7/8 family, it improves on that controller
family with additional features, such as enhanced
control logic, adaptive delay set, and shutdown
capability. Since the device is built in BCDMOS, it
operates with dramatically less supply current than its
bipolar counterparts. The UCC2895-EP can operate
with a maximum clock frequency of 1 MHz.
The M-temp UCC2895-EP device is offered in the 20-
pin SOIC (DW) package.