Renesas HA16108P-E

Overview

HA16108P-E from Renesas Electronics is a voltage-mode PWM controller IC designed for primary-side control in AC/DC switching power supplies. It integrates a 6.45 V reference, triangle-wave oscillator (up to 600 kHz), error amplifier, under-voltage lockout (UVL1/UVL2), pulse-by-pulse current limiting, ON/OFF timer-based overcurrent protection, soft-start, and MOSFET gate driver output - enabling safe, self-protected flyback and forward converter designs.

For engineers reviewing the HA16108P-E datasheet, HA16108P-E pinout, HA16108P-E application, or HA16108P-E equivalent, this page delivers verified functional identity, confirmed 16-pin DIP package mapping, validated ON/OFF timer behavior, exact UVL thresholds (16.2 V/9.5 V), and two field-validated alternative controllers with documented functional distinctions.

Technical Context

The HA16108P-E implements voltage-mode PWM control using an internal triangle-wave oscillator whose frequency (270–330 kHz typ. at RT1=RT2=27 kΩ, CT=120 pF) is set by external RT1, RT2, and CT components. Its ON/OFF timer function on pin 16 responds to sustained overcurrent by cycling between temporary shutdown and recovery - distinct from the latched shutdown of HA16107 - with timing governed by external capacitor charge/discharge currents (16 µA source / 4 µA sink).

It features dual undervoltage lockout: UVL1 monitors VIN (16.2 V turn-on, 9.5 V turn-off hysteresis), while UVL2 monitors Vref (5.0 V turn-on, 4.0 V turn-off), ensuring PWM output only activates when both rails are stable. The built-in 34 V VIN-to-GND Zener diode and ±2 A peak output current support direct high-voltage primary-side operation without auxiliary bias winding dependency.

Key Specifications

Pinout & Package

HA16108P-E uses a 16-pin plastic DIP (DP-16) package with through-hole mounting and standard 0.3-inch row spacing. Thermal performance is optimized via GND-connected pins (4, 5, 12, 13) acting as heat-sinking paths.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PWM controller applications.

Compared with UC3842B and TL494, the HA16108P-E delivers higher integration (600 kHz oscillator, 2 A driver, dual UVL, ON/OFF timer), enabling simpler, more robust primary-side control in 30–100 W AC/DC supplies without external protection logic or driver stages.

Availability

HA16108P-E is available at Aetrix Electronics and suitable for industrial control power modules, medical auxiliary supplies, AC/DC adapters, and LED driver power stages requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for HA16108P-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.

The HA16108P-E belongs to Renesas' legacy PWM controller product line, engineered specifically for high-safety, primary-side regulated AC/DC converters in industrial and medical equipment where reliability and fault resilience are critical.

FAQ

What is the key functional difference between HA16108P-E and HA16107P-E?

The HA16108P-E implements an ON/OFF timer on pin 16 that enables automatic recovery from overcurrent events, cycling between temporary shutdown and normal operation. In contrast, the HA16107P-E uses a timer-latch function that permanently disables PWM output until VIN drops below ~6.5 V. This makes HA16108P-E preferable for applications requiring fault tolerance without manual reset, such as industrial adapters subject to intermittent overload.

Does HA16108P-E require an auxiliary winding for Vref biasing?

No, HA16108P-E does not require an auxiliary winding. Its 34 V internal VIN-to-GND Zener diode allows direct connection to rectified DC bus (e.g., 300 VDC after bridge), and the 6.45 V Vref output is internally regulated and stable across input voltage and temperature - enabling single-supply operation without auxiliary bias circuitry.

What are the exact UVL thresholds for HA16108P-E and how do they affect startup?

The HA16108P-E features two independent UVL circuits: UVL1 triggers at 16.2 V (turn-on) and 9.5 V (turn-off) on VIN, while UVL2 activates at 5.0 V (turn-on) and 4.0 V (turn-off) on Vref. Startup requires both thresholds to be exceeded simultaneously - ensuring the controller only begins switching when both main supply and internal reference are fully stabilized, preventing erratic operation during brownout conditions.

Can HA16108P-E drive a 600 V MOSFET directly?

Yes, HA16108P-E can directly drive medium-voltage MOSFETs such as the 600 V FQP4N60 or STP4NK60Z. Its ±2 A peak output current, 40 ns rise time, and 34 V VIN Zener provide sufficient gate drive strength and input protection for these devices in flyback configurations up to 100 W - eliminating the need for external driver transistors in most cases.

How is the maximum duty cycle programmed on HA16108P-E?

The maximum duty cycle (D_{u max}) of HA16108P-E is set by the ratio of external resistors RT1 and RT2: D_{u max} = RT2 / (2RT1 − RT2). For example, using RT1 = RT2 = 27 kΩ yields exactly 50% max duty - essential for avoiding transformer saturation in flyback topologies. Values exceeding 50% are possible but discouraged for primary-side flyback due to core saturation risk.